High-temperature zirconia casting mold structure

Abstract

The utility model discloses a high temperature zirconium oxide casting mould structure, including lower bottom plate, the upper portion of lower bottom plate is provided with mould material taking mechanism, and the outside of mould material taking mechanism is provided with installation mould mechanism, and mould material taking mechanism includes rotating motor, and the bottom surface of rotating motor is fixedly connected with the upper surface of lower bottom plate, and the output of rotating motor is provided with the joint groove, and the inside joint of joint groove is limited to the limit block, and the upper surface fixed connection of limit block has screw rod. The utility model discloses through setting up the cooperation of casting processing mould, forming inner layer, heat -shock resistance transition layer, reinforcing support layer and heat -proof outer layer, reduces material adhesion, alleviates the temperature difference stress of inside and outside layer, promotes the impact strength and the bending performance of casting processing mould, reduces mould heat loss, maintains the internal thermal field stability between two casting processing moulds, prolongs the service life of this casting mould structure.

Description

Technical Field

[0001] This utility model belongs to the field of casting mold technology, specifically relating to a high-temperature zirconia casting mold structure. Background Technology

[0002] The casting method involves melting gold and silver into a liquid state and casting it into a mold to make objects. It is one of the earliest gold and silver processing methods. Casting involves pouring a mixed slurry into a mold, and after solidification, it forms a workpiece that meets the design requirements. Thus, the casting mold is used to process materials by casting and shaping.

[0003] According to the utility model patent application CN220880491U, a low-pressure casting mold structure is disclosed, including a casting mechanism. A liquid lifting mechanism is fixedly connected to the bottom of the casting mechanism. The casting mechanism includes a support plate. Four limiting blocks are fixedly installed on the top of the support plate. A first circular hole is opened at the center of the top of the support plate. A bottom plate is fixedly installed on the top of the support plate. A bottom mold is fixedly installed on the top of the bottom plate. A second circular hole is opened at the center of the top of the bottom mold.

[0004] While this equipment effectively prevents mold tilting under the action of the casting mechanism, supporting the mold and ensuring its stable operation during casting, thus facilitating casting formation, improving surface finish, enhancing the device's convenience, and increasing work efficiency, the casting molds are made of metal or ordinary ceramic. The physical properties of these materials result in insufficient high-temperature resistance, poor thermal shock stability, and difficulty in demolding castings. This leads to short mold life, low casting yield, and difficulty in meeting the demands of high-precision and high-stability casting production, reducing the practicality of the casting mold structure. Therefore, we provide a high-temperature zirconia casting mold structure to solve these problems. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a high-temperature zirconia casting mold structure.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A high-temperature zirconia casting mold structure includes a lower base plate. A mold material handling mechanism is arranged above the lower base plate, and a mold mounting mechanism is arranged outside the mold material handling mechanism. The mold material handling mechanism includes a rotating motor. The bottom surface of the rotating motor is fixedly connected to the upper surface of the lower base plate. A snap-fit ​​groove is opened at the output end of the rotating motor. A limit block is snapped into the inside of the snap-fit ​​groove. A threaded rod is fixedly connected to the upper surface of the limit block. A push rotating plate is fixedly connected to the top end of the threaded rod. Two casting molds are arranged above the rotating motor. The two casting molds are in contact with each other on their adjacent sides. The push rotating plate is slidably connected to the inside of one of the casting molds. The threaded rod is rotatably connected to the inside of one of the casting molds. A threaded cylinder is fixedly connected to the bottom surface of one of the casting molds, and the threaded rod is threadedly connected to the inside of the threaded cylinder.

[0007] Preferably, each of the casting molds has a molding inner layer on top, a thermal shock resistant transition layer on the bottom, and a reinforcing support layer on top of each molding inner layer.

[0008] Preferably, a heat-insulating outer layer is provided below each of the heat-shock-resistant transition layers, and a fixing plate and a connecting ring are fixedly connected to the outer surfaces of the two casting molds respectively, with the bottom surface of the connecting ring contacting the upper surface of the fixing plate.

[0009] Preferably, a reinforcing ring is fixedly connected to the outer surface of the rotating motor, and the bottom surface of the reinforcing ring is fixedly connected to the upper surface of the lower base plate.

[0010] Preferably, a feeding pipe is fixedly connected to the upper surface of another casting mold, and an exhaust pipe is fixedly connected to the outer surface of the other casting mold.

[0011] Preferably, the bottom surface of the connecting ring is provided with an installation groove, and a heat-resistant sealing ring is snapped into the inside of the installation groove, with the bottom surface of the heat-resistant sealing ring in contact with the upper surface of the fixing plate.

[0012] Preferably, the mold mounting mechanism includes two sets of support rods. The bottom end of each set of support rods is fixedly connected to the upper surface of the lower base plate, and the outer surface of each set of support rods is fixedly connected to the inner wall of the fixing plate. The top ends of the two sets of support rods are fixedly connected to an upper top plate. A lifting telescopic rod is fixedly connected to the inner wall of the upper top plate, and the telescopic end of the lifting telescopic rod is fixedly connected to the upper surface of another casting mold.

[0013] Preferably, the upper surface of the lower base plate is provided with two sets of threaded holes, and each set of threaded holes is threaded with a mounting bolt. The bottom ends of the two sets of mounting bolts pass through the two sets of threaded holes and extend to the bottom of the lower base plate.

[0014] Preferably, each set of mounting bolts has a mounting ring fixedly connected to its outer surface, a compression spring fixedly connected to its bottom surface, and a sliding ring fixedly connected to its bottom end.

[0015] Preferably, the inner walls of the two sets of compression springs and the inner walls of the two sets of sliding rings are in contact with the outer surfaces of the two sets of mounting bolts, and the bottom surface of each set of sliding rings is in contact with the upper surface of the lower base plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) By setting up a casting mold, a forming inner layer, a thermal shock resistant transition layer, a reinforcing support layer and a heat insulation outer layer, this utility model can utilize the forming inner layer of high-purity zirconia dense layer to process the complex shape of the casting. The surface is plasma polished to reduce material adhesion. The thermal shock resistant transition layer of zirconia-hafnium oxide composite layer is used to control the coefficient of thermal expansion through nano-doping technology to alleviate the temperature difference stress between the inner and outer layers. The reinforcing support layer of zirconia-silicon carbide-carbon fiber composite layer is used to adopt a three-dimensional weaving molding process to improve the impact strength and bending performance of the casting mold. The heat insulation outer layer of zirconia-zirconia fiber composite layer reduces heat loss from the mold, maintains the internal thermal field stability between the two casting molds, and extends the service life of the casting mold structure.

[0017] (2) This utility model controls the output power of the rotating motor to enable the limiting block to be engaged in the locking groove, and enables the threaded rod to rotate in the threaded cylinder. Due to the threaded engagement between the threaded cylinder and the threaded rod, the limiting block can slide in the locking groove, so that the pushing plate can slide in the casting mold below, and slowly push the casting in the casting mold, thereby facilitating the removal of the casting in the casting mold structure, improving the casting yield, and meeting the casting production requirements of high precision and high stability, thus further improving the practicality of the casting mold structure. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the fixing plate of this utility model; Figure 2 This is a cross-sectional three-dimensional structural diagram of the casting mold of this utility model; Figure 3 This is a bottom-view three-dimensional structural diagram of the limiting block of this utility model; Figure 4 This is a cross-sectional view of the casting mold of this utility model.

[0019] The diagram shows: 1. Lower base plate; 2. Mold material handling mechanism; 201. Rotating motor; 202. Reinforcing ring; 203. Snap-fit ​​groove; 204. Limiting block; 205. Threaded rod; 206. Pushing rotating plate; 207. Threaded cylinder; 208. Casting mold; 209. Fixing plate; 210. Mounting groove; 211. Heat-resistant sealing ring; 212. Feeding pipe; 213. Exhaust pipe; 214. Connecting ring; 215. Molding inner layer; 216. Thermal shock resistant transition layer; 217. Reinforcing support layer; 218. Heat insulation outer layer; 3. Mold mounting mechanism; 301. Support rod; 302. Upper top plate; 303. Lifting telescopic rod; 304. Threaded hole; 305. Mounting bolt; 306. Mounting ring; 307. Compression spring; 308. Sliding ring. Detailed Implementation

[0020] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0021] Reference Figure 1 and Figure 2 As shown, this utility model embodiment provides a high-temperature zirconia casting mold structure, specifically including a lower base plate 1, a mold material handling mechanism 2 is provided above the lower base plate 1, and a mold mounting mechanism 3 is provided outside the mold material handling mechanism 2. The mold material handling mechanism 2 includes a rotating motor 201, the bottom surface of the rotating motor 201 is fixedly connected to the upper surface of the lower base plate 1, and a reinforcing ring 202 is fixedly connected to the outer surface of the rotating motor 201. The bottom surface of the reinforcing ring 202 is fixedly connected to the upper surface of the lower base plate 1. The reinforcing ring 202 is fixed at the connection between the rotating motor 201 and the lower base plate 1, thereby improving the connection stability between the rotating motor 201 and the lower base plate 1.

[0022] Reference Figure 1 , Figure 2 and Figure 3As shown, the output end of the rotating motor 201 has a locking groove 203. A limiting block 204 is locked inside the locking groove 203. A threaded rod 205 is fixedly connected to the upper surface of the limiting block 204. A push rotating plate 206 is fixedly connected to the top of the threaded rod 205. Two casting molds 208 are arranged above the rotating motor 201. The two casting molds 208 are in contact with each other on their adjacent sides. The push rotating plate 206 is slidably connected to the inside of one of the casting molds 208. The threaded rod 205 is rotatably connected to the inside of one of the casting molds 208. A feeding pipe 212 is fixedly connected to the upper surface of the other casting mold 208. An exhaust pipe 213 is fixedly connected to the outer surface of the other casting mold 208. The feeding pipe 212 is used to conveniently transport molten metal into the space between the two casting molds 208, while the exhaust pipe 213 is used to conveniently expel air from the space between the two casting molds 208.

[0023] Reference Figure 1 and Figure 2 As shown, a threaded cylinder 207 is fixedly connected to the bottom surface of one of the casting molds 208. A threaded rod 205 is threadedly connected to the inside of the threaded cylinder 207. Two sets of threaded holes 304 are provided on the upper surface of the lower base plate 1. Each set of threaded holes 304 is threadedly connected to a mounting bolt 305. The bottom ends of the two sets of mounting bolts 305 pass through the two sets of threaded holes 304 and extend to the bottom of the lower base plate 1. By drilling holes at the required positions, the mounting bolts 305 can be threaded through the threaded holes 304 and connected to the drilled holes, thereby enabling the structure to be stably installed on the processing table.

[0024] Reference Figure 1 and Figure 4As shown, each casting mold 208 has a forming inner layer 215 on top, which is made of high-purity zirconia dense layer material to process complex shapes of castings. The surface is plasma polished to reduce material adhesion. Each casting mold 208 has a thermal shock resistant transition layer 216 on the bottom, which is made of zirconia-hafnium oxide composite material to control the coefficient of thermal expansion through nano-doping technology and alleviate the thermal stress of the inner and outer layers. Each forming inner layer 215 has a reinforcing support layer 217 on top, which is made of zirconia-silicon carbide-carbon fiber composite material to improve the impact strength and bending performance of the casting mold 208 using a three-dimensional braiding molding process. Each thermal shock resistant transition layer 216 has a heat insulation outer layer 218 on the bottom, which is made of zirconia-hafnium oxide composite material. The zirconium fiber composite layer reduces heat loss from the mold and maintains a stable internal thermal field between the two casting molds 208. Each set of mounting bolts 305 has a mounting ring 306 fixedly connected to its outer surface, and a compression spring 307 fixedly connected to the bottom surface of each mounting ring 306. Each set of compression springs 307 has a sliding ring 308 fixedly connected to its bottom end. The inner walls of the two sets of compression springs 307 and the two sets of sliding rings 308 are in contact with the outer surfaces of the two sets of mounting bolts 305, respectively. The bottom surface of each set of sliding rings 308 is in contact with the upper surface of the lower base plate 1. By manually twisting the mounting bolts 305 through the compression springs 307 fixed by the mounting rings 306, the mounting rings 306 and sliding rings 308 can compress the compression springs 307, thereby using the elastic force within the compression springs 307 to buffer the impact force on the mounting bolts 305.

[0025] Reference Figure 1 and Figure 2 As shown, the outer surfaces of the two casting molds 208 are respectively fixedly connected to a fixing plate 209 and a connecting ring 214. The bottom surface of the connecting ring 214 is in contact with the upper surface of the fixing plate 209. The mold mounting mechanism 3 includes two sets of support rods 301. The bottom end of each set of support rods 301 is fixedly connected to the upper surface of the lower base plate 1, and the outer surface of each set of support rods 301 is fixedly connected to the inner wall of the fixing plate 209. The top ends of the two sets of support rods 301 are fixedly connected to an upper top plate 302. The inner wall of the upper top plate 302 is fixedly connected to a lifting telescopic rod 303. The telescopic end of the lifting telescopic rod 303 is fixedly connected to the upper surface of the other casting mold 208. The support rods 301 are used to improve the fixing stability of the fixing plate 209 and enable the upper top plate 302 to install the lifting telescopic rod 303, so as to facilitate the automatic control of the structure to process the casting.

[0026] Reference Figure 2As shown, the bottom surface of the connecting ring 214 is provided with an installation groove 210. A heat-resistant sealing ring 211 is snapped into the inside of the installation groove 210. The bottom surface of the heat-resistant sealing ring 211 is in contact with the upper surface of the fixing plate 209. By setting the heat-resistant sealing ring 211 between the two casting molds 208, the heat-resistant sealing ring 211 can be snapped into the installation groove 210, thereby sealing the gap between the two casting molds 208 and the outside.

[0027] In use, first connect the rotating motor 201 and the lifting telescopic rod 303 to the power supply. When the high-temperature zirconia casting mold structure is needed to cast the casting, first manually place the lower base plate 1 of the high-temperature zirconia casting mold structure at the required position on the processing table, and manually drill holes corresponding to the threaded holes 304 at the required position. The mounting bolts 305 can be threaded through the threaded holes 304 and connected to the drilled holes, so that the casting mold structure can be stably installed on the processing table. Continue to twist the mounting bolts 305, and the compression spring 307 and sliding ring 308 fixed under the mounting ring 306 can be used to compress the spring. Spring 307 is compressed until it reaches its maximum compression, thus utilizing the stored elasticity to buffer the impact force on mounting bolt 305. This further ensures the stable installation of the casting mold structure onto the processing table. Then, by manually positioning the heat-resistant sealing ring 211 on the corresponding position on the fixed plate 209 and controlling the power supply to the lifting telescopic rod 303, the upper casting mold 208 can cover the lower casting mold 208, and the connecting ring 214 can cover the fixed plate 209. Simultaneously, the heat-resistant sealing ring 211 can be engaged in the mounting groove 210, allowing the two casting molds to be properly positioned. The gaps between the molds 208 and the outside are sealed. High-temperature molten metal is manually fed into the space formed by the two casting molds 208 through the feeding pipe 212. Air is expelled from the space via the exhaust pipe 213, facilitating the casting of workpieces using this mold structure. After casting, the upper casting mold 208 is raised by controlling the power supply of the lifting telescopic rod 303 until the casting is completely separated from it. Simultaneously, the rotation motor 201 outputs rotational power by controlling its power supply. The limiting block 204 then secures the workpiece. The threaded rod 205 rotates within the locking groove 203, allowing the limiting block 204 to rotate. Since the threaded cylinder 207 is fixed to the bottom surface of the lower casting mold 208, the threaded rod 205 rotates within the threaded cylinder 207. The cooperation between the threaded rod 205 and the threaded cylinder 207 allows the limiting block 204 to slide within the locking groove 203. This allows the pushing plate 206 at the top of the threaded rod 205 to rotate within the lower casting mold 208 and push the casting inside the mold upwards. This facilitates the removal of the casting from the casting mold 208, improving the casting yield and meeting the requirements for high-precision and high-stability casting production.

[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-temperature zirconia casting mold structure, comprising a lower base plate (1), characterized in that: A mold feeding mechanism (2) is provided above the lower base plate (1), and a mold mounting mechanism (3) is provided outside the mold feeding mechanism (2). The mold feeding mechanism (2) includes a rotating motor (201). The bottom surface of the rotating motor (201) is fixedly connected to the upper surface of the lower base plate (1). A snap-fit ​​groove (203) is provided at the output end of the rotating motor (201). A limit block (204) is snapped into the inside of the snap-fit ​​groove (203). A threaded rod (205) is fixedly connected to the upper surface of the limit block (204). The top end of the threaded rod (205) is fixedly connected to... A pusher plate (206) is connected to the rotating motor (201), and two casting molds (208) are arranged above the rotating motor (201). The two casting molds (208) are in contact with each other on their closest sides. The pusher plate (206) is slidably connected to the inside of one of the casting molds (208). The threaded rod (205) is rotatably connected to the inside of one of the casting molds (208). The bottom surface of one of the casting molds (208) is fixedly connected to a threaded cylinder (207), and the threaded rod (205) is threadedly connected to the inside of the threaded cylinder (207).

2. The high-temperature zirconia casting mold structure according to claim 1, characterized in that: Each of the casting molds (208) is provided with a molding inner layer (215) above it, a thermal shock resistant transition layer (216) is provided below it, and a reinforcing support layer (217) is provided above each of the molding inner layers (215).

3. The high-temperature zirconia casting mold structure according to claim 2, characterized in that: Each of the thermal shock resistant transition layers (216) is provided with a heat insulation outer layer (218) below it. The outer surfaces of the two casting molds (208) are respectively fixedly connected with a fixing plate (209) and a connecting ring (214). The bottom surface of the connecting ring (214) is in contact with the upper surface of the fixing plate (209).

4. The high-temperature zirconia casting mold structure according to claim 1, characterized in that: A reinforcing ring (202) is fixedly connected to the outer surface of the rotating motor (201), and the bottom surface of the reinforcing ring (202) is fixedly connected to the upper surface of the lower base plate (1).

5. The high-temperature zirconia casting mold structure according to claim 1, characterized in that: Another casting mold (208) has a feeding pipe (212) fixedly connected to its upper surface, and an exhaust pipe (213) fixedly connected to its outer surface.

6. The high-temperature zirconia casting mold structure according to claim 3, characterized in that: The bottom surface of the connecting ring (214) is provided with an installation groove (210), and a heat-resistant sealing ring (211) is snapped into the inside of the installation groove (210). The bottom surface of the heat-resistant sealing ring (211) is in contact with the upper surface of the fixing plate (209).

7. The high-temperature zirconia casting mold structure according to claim 1, characterized in that: The installation mold mechanism (3) includes two sets of support rods (301). The bottom end of each set of support rods (301) is fixedly connected to the upper surface of the lower base plate (1). The outer surface of each set of support rods (301) is fixedly connected to the inner wall of the fixing plate (209). The top ends of the two sets of support rods (301) are fixedly connected to the upper top plate (302). The inner wall of the upper top plate (302) is fixedly connected to the lifting telescopic rod (303). The telescopic end of the lifting telescopic rod (303) is fixedly connected to the upper surface of another casting mold (208).

8. The high-temperature zirconia casting mold structure according to claim 7, characterized in that: The upper surface of the lower base plate (1) is provided with two sets of threaded holes (304). Each set of threaded holes (304) is threaded with mounting bolts (305). The bottom ends of the two sets of mounting bolts (305) pass through the two sets of threaded holes (304) and extend to the bottom of the lower base plate (1).

9. The high-temperature zirconia casting mold structure according to claim 8, characterized in that: Each set of mounting bolts (305) has a mounting ring (306) fixedly connected to its outer surface, and each set of mounting rings (306) has a compression spring (307) fixedly connected to its bottom surface, and each set of compression springs (307) has a sliding ring (308) fixedly connected to its bottom end.

10. The high-temperature zirconia casting mold structure according to claim 9, characterized in that: The inner walls of the two sets of compression springs (307) and the inner walls of the two sets of sliding rings (308) are in contact with the outer surfaces of the two sets of mounting bolts (305), and the bottom surface of each set of sliding rings (308) is in contact with the upper surface of the lower base plate (1).

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