A rapid casting equipment for stainless steel castings

Abstract

The application provides a stainless steel casting investment rapid casting equipment, which comprises a base, a pouring assembly is arranged on the base, a protection structure is arranged on a rotating frame of the pouring assembly, the protection structure comprises two connecting seats fixedly connected to the rotating frame and protection assemblies arranged on the two connecting seats, a fixing assembly for fixing the protection assemblies is arranged on the protection assemblies, a limiting assembly for limiting the fixing assemblies is arranged on the protection assemblies, and the protection assemblies are driven to rotate through a driving structure. The protection structure and the driving structure are used in cooperation, the protection cloth can be unfolded and folded by one key, the high-temperature molten liquid is effectively blocked from splashing, the heat loss of the molten liquid is reduced, manual laying of the protection cloth is not needed, the pouring preparation time is shortened, the operation safety and the process continuity are improved, the automatic and rapid clamping mode greatly shortens the time consumption for positioning the refractory shell, the equipment is suitable for different specifications of the investment refractory shell, and the rapid casting is achieved.

Description

Technical Field

[0001] This invention belongs to the technical field of stainless steel casting equipment, specifically relating to a rapid investment casting equipment for stainless steel castings. Background Technology

[0002] Investment casting molds, also known as lost-wax molds, are the core intermediate carriers for forming stainless steel castings in the lost-wax casting process. They are made primarily of fusible materials such as paraffin wax, beeswax, and resin, mixed with fillers to create a model with the same shape and dimensions as the casting. After being coated with a refractory coating and dewaxing to form a shell, molten stainless steel is poured in, and the shell cools and breaks open to obtain the casting. These molds are widely used in high-precision fields such as precision machinery and aerospace. Rapid investment casting equipment for stainless steel castings is key to the large-scale, efficient production of investment casting. It integrates functions such as refractory shell support, molten metal pouring, and solidification assistance. Through automated process optimization, it shortens the production cycle and enables mass production.

[0003] However, in the industrial application of casting equipment, there are significant shortcomings in the safety protection of pouring operations. The protective cloth needs to be laid and dismantled manually, which is not only time-consuming and slows down the production cycle, but also exposes operators to high-temperature environments for a long time, making them susceptible to burns from splashing molten liquid. In addition, manual laying makes it difficult to completely cover the pouring area, which can easily lead to heat loss and molten liquid splashing, contaminating the equipment site and affecting efficiency and safety. At the same time, the molten stainless steel does not flow smoothly in the cavity, and air bubbles cannot be quickly discharged. After cooling, they form pores, reducing the density and mechanical properties of the casting. Furthermore, the refractory shell lacks a reliable fixed limiting structure. Impact loads during pouring and improper operation of the robot can easily cause the refractory shell to shift, resulting in pouring misalignment. This not only produces unqualified castings, but also causes safety hazards such as molten liquid splashing. Summary of the Invention

[0004] To address the problems in the prior art, this invention provides a rapid investment casting equipment for stainless steel castings.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows: A rapid investment casting equipment for stainless steel castings includes a base, on which a casting assembly is provided, and a protective structure is provided on the rotating frame of the casting assembly. The protective structure includes two connecting seats fixedly connected to the rotating frame and a protective component disposed on the two connecting seats. The protective component is provided with a fixing component for fixing the protective component and a limiting component for limiting the fixing component. The protective component is driven to rotate by a driving structure. The casting assembly includes a casting robot and a rotating frame. The casting robot is mounted on the base, and the rotating frame is rotatably connected to the casting robot. A control box is mounted on the base. The protective assembly includes a rotating frame, a protective cloth, and a rotating shaft. The rotating shaft is rotatably connected between the two connecting seats. The rotating frame is fixedly connected to the rotating shaft, and the protective cloth is detachably connected to the rotating frame.

[0006] As a preferred embodiment of the present invention, the fixing component includes a fixing plate, a sliding plate and a first spring. The sliding plate is slidably connected to the rotating frame, the fixing plate is fixedly connected to the sliding plate, the first spring is fixedly connected between the sliding plate and the rotating frame, and a protective cloth abuts between the fixing plate and the rotating frame.

[0007] In a preferred embodiment of the present invention, the limiting component includes an adjusting rod and a limiting rod. The adjusting rod is slidably connected to the slide plate, and the limiting rod is fixedly connected to the adjusting rod. The limiting rod is slidably connected to the rotating frame, and a transmission gear is fixedly connected to the rotating shaft.

[0008] As a preferred embodiment of the present invention, the driving structure includes a rack meshing with the transmission gear and a connecting rod fixedly connected to the rack, a sliding rod fixedly connected to the connecting rod, and the sliding rod slidably connected to the rotating frame.

[0009] As a preferred embodiment of the present invention, a pressing block is slidably connected to the slide rod, a limiting shaft is fixedly connected to the pressing block, and two limiting holes are provided on the rotating frame, with the limiting shaft engaging with one of the limiting holes.

[0010] In a preferred embodiment of the present invention, a second spring is fixedly connected between the pressing block and the sliding rod, a guide rail is fixedly connected to the rotating frame, and the rack is slidably connected to the guide rail.

[0011] In a preferred embodiment of the present invention, the rotating frame is driven to rotate by a transmission structure. The transmission structure includes a worm gear fixedly connected to the rotating frame and a worm meshing with the worm gear. A mounting box is fixedly connected to the rotating frame. The worm is rotatably connected to the mounting box. A first bevel gear is fixedly connected to the worm. A second bevel gear meshes with the first bevel gear. A transmission shaft is fixedly connected to the second bevel gear. The transmission shaft is rotatably connected to the mounting box. A crank handle is fixedly connected to the transmission shaft.

[0012] In a preferred embodiment of the present invention, a slide table is slidably connected to the base, and a vibration structure is provided on the slide table. The vibration structure includes a slide column fixedly connected to the slide table and a threaded ring threadedly connected to the slide column. A third spring abuts against the threaded ring and the base. A vibration motor is installed on the slide table. A connecting shaft is rotatably connected to the base. Two cams are fixedly connected to the connecting shaft. A limit block is slidably connected to the connecting shaft. The limit block engages with the base. A pull block is fixedly connected to the limit block. The pull block is slidably connected to the connecting shaft.

[0013] As a preferred embodiment of the present invention, the slide is provided with a fixing structure, the fixing structure including a guide frame fixedly connected to the slide and three sets of connecting plates slidably connected to the guide frame. The slide is also fixedly connected with three sets of mounting seats, and a lead screw is rotatably connected between the two mounting seats in each set. The two connecting plates in each set are respectively threadedly connected to the lead screw on each set of mounting seats.

[0014] In a preferred embodiment of the present invention, two fixed seats are fixedly connected to the slide, and an installation shaft is fixedly connected between the two fixed seats. Three synchronous pulleys are fixedly connected to the installation shaft, and a synchronous pulley is fixedly connected to the lead screw. Each pair of synchronous pulleys is driven by a synchronous belt. A driving component is installed on the fixed seat, and the installation shaft is driven to rotate by the driving component.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: (1) The stainless steel casting rapid casting equipment described in this invention has a protective structure on the rotating frame of the casting component. The protective component is driven to rotate by the driving structure. The protective structure and the driving structure work together to unfold and retract the protective cloth with one click, effectively blocking the splashing of high temperature molten liquid and reducing the heat loss of molten liquid. There is no need to manually lay the protective cloth separately, shortening the casting preparation time and improving the safety and continuity of the operation.

[0016] (2) The stainless steel casting investment casting equipment of the present invention has a vibration structure on the slide table. The vibration structure can generate a small amplitude high frequency vibration in the vertical direction to ensure that the vibration energy is uniformly transmitted to the interior of the refractory shell, and accelerate the flow, filling and solidification of the molten liquid.

[0017] (3) The stainless steel casting investment casting equipment of the present invention has a fixed structure on the slide table. The fixed structure can clamp and fix the refractory shell, avoid displacement during the pouring process, and the automated quick clamping method greatly shortens the positioning time of the refractory shell. It can be adapted to different specifications of investment casting refractory shells and help to achieve rapid casting. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 The diagram shown is an enlarged view of the structure of part A. Figure 3 This is a schematic diagram of the connection structure between the slide and the base of the present invention; Figure 4 for Figure 3 The diagram shown is an enlarged view of the structure of section B. Figure 5 for Figure 3 The diagram shown is an enlarged view of the C-section structure. Figure 6 for Figure 3 The diagram shown is an enlarged view of the structure of part D. Figure 7 This is a schematic diagram of the connection structure between the connecting plate and the guide frame of the present invention; Figure 8 for Figure 7 The diagram shown is an enlarged view of the E-section structure. Figure 9 This is a schematic diagram of the connection structure between the connecting seat and the rotating frame of the present invention; Figure 10 for Figure 9 The diagram shows an enlarged view of the F-section structure. Figure 11 This is a schematic diagram of the connection structure between the rotating shaft and the connecting seat of the present invention.

[0020] The diagram shows: 1. Base; 2. Protective structure; 201. Connecting seat; 202. Rotating frame; 203. Fixing plate; 204. Protective cloth; 205. Rotating shaft; 206. Transmission gear; 207. First spring; 208. Slide plate; 209. Adjusting rod; 210. Limiting rod; 3. Drive structure; 301. Rack; 302. Connecting rod; 303. Slide rod; 304. Pressing block; 305. Limiting shaft; 306. Limiting hole; 307. Second spring; 308. Guide rail; 4. Vibration structure; 401. Sliding column; 402. Threaded ring; 403. Third spring; 404. Vibration... 405. Motor; 406. Connecting shaft; 407. Cam; 408. Limit block; 409. Pull block; 5. Fixing structure; 501. Guide frame; 502. Connecting plate; 503. Mounting base; 504. Lead screw; 505. Fixed base; 506. Mounting shaft; 507. Synchronous pulley; 508. Synchronous belt; 509. Driving component; 6. Transmission structure; 601. Worm gear; 602. Worm; 603. First bevel gear; 604. Second bevel gear; 605. Drive shaft; 606. Handle; 7. Slide table; 8. Casting robot; 9. Control box; 10. Rotating frame; 11. Mounting box. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] Please see Figure 1 , Figure 3 , Figure 6 , Figure 9 and Figure 11 As shown in the figure, this embodiment of the invention provides a rapid investment casting equipment for stainless steel castings, specifically including a base 1, a casting assembly on the base 1, and a protective structure 2 on the rotating frame 10 of the casting assembly. The protective structure 2 includes two connecting seats 201 fixedly connected to the rotating frame 10 and a protective component on the two connecting seats 201. The protective component has a fixing component for fixing the protective component and a limiting component for limiting the fixing component. The protective component is driven to rotate by a driving structure 3. Specifically, in this embodiment, the protective structure 2 is provided on the rotating frame of the casting assembly, and the protective component is driven to rotate by the driving structure 3. The protective structure 2 and the driving structure 3 work together to unfold and retract the protective cloth with one click, effectively blocking the splashing of high-temperature molten liquid, reducing the heat loss of the molten liquid, eliminating the need for manual laying of the protective cloth, shortening the casting preparation time, and improving the safety and continuity of the operation.

[0023] Please see Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 9 , Figure 10 and Figure 11 As shown, the casting assembly specifically includes a casting robot 8 and a rotating frame 10. The casting robot 8 is mounted on a base 1, and the rotating frame 10 is rotatably connected to the casting robot 8. A control box 9 is mounted on the base 1. The protective assembly includes a rotating frame 202, a protective cloth 204, and a rotating shaft 205. The rotating shaft 205 is rotatably connected between two connecting seats 201. The rotating frame 202 is fixedly connected to the rotating shaft 205. The protective cloth 204 is detachably connected to the rotating frame 202. A sliding plate 208 is slidably connected to the rotating frame 202. A fixing plate 203 is fixedly connected to the sliding plate 208. A first spring 207 is fixedly connected between the sliding plate 208 and the rotating frame 202. The protective cloth 204 abuts against the fixing plate 203 and the rotating frame 202. An adjusting rod 209 is slidably connected to the sliding plate 208. A limit rod 210 is fixedly connected to the adjusting rod 209, and the limit rod 210 is slidably connected to the rotating frame 202. A transmission gear 206 is fixedly connected to the rotating shaft 205.

[0024] Please see Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 9 , Figure 10 and Figure 11As shown, the drive structure 3 includes a rack 301 meshing with the transmission gear 206 and a connecting rod 302 fixedly connected to the rack 301. A slide rod 303 is fixedly connected to the connecting rod 302 and is slidably connected to the rotating frame 10. A pressing block 304 is slidably connected to the slide rod 303. A limiting shaft 305 is fixedly connected to the pressing block 304. The rotating frame 10 is provided with two limiting holes 306. Pressing the pressing block 304 on the slide rod 303 compresses the second spring 307, causing the limiting shaft 305 to disengage from the first limiting hole 306 on the rotating frame 10, thus releasing the limiting constraint on the slide rod 303. Subsequently, the slide rod 303 is pulled horizontally to slide along the rotating frame 10. The slide rod 303 drives the rack 301 to move along the guide rail 308 through the connecting rod 302. The rack 301 meshes with the transmission gear 206 on the transmission shaft 205, causing the transmission gear 206 to drive the shaft 205 and the rotating frame 202 to rotate 90°. The protective cloth 204 on the rotating frame 202 completely covers the pouring barrel, effectively blocking the splashing of high-temperature stainless steel molten liquid during the pouring process, preventing operators from being burned, and preventing molten liquid from splashing onto surrounding equipment and the ground, causing corrosion and pollution. Moreover, there is no need for manual handling, laying, and fixing of the protective cloth 204, which greatly shortens the preparation time before pouring, improves the continuity of the operation process, and helps to accelerate casting. The protective cloth 204 can also reduce the heat loss of the molten liquid in the pouring barrel, maintain the good fluidity of the molten liquid, promote its rapid filling in the refractory shell cavity, and further accelerate the casting pace. At the same time, it can prevent external dust and debris from falling into the molten liquid, ensuring the forming quality of stainless steel castings. The limiting shaft 305 engages with one of the limiting holes 306. A second spring 307 is fixedly connected between the pressing block 304 and the slide rod 303. A guide rail 308 is fixedly connected to the rotating frame 202, and the rack 301 is slidably connected to the guide rail 308.

[0025] Please see Figure 10As shown, the rotating frame 10 is driven to rotate by the transmission structure 6. The transmission structure 6 includes a worm gear 601 fixedly connected to the rotating frame 10 and a worm 602 meshing with the worm gear 601. A mounting box 11 is fixedly connected to the rotating frame 10, and the worm 602 is rotatably connected to the mounting box 11. A first bevel gear 603 is fixedly connected to the worm 602. When the operator holds the crank handle 606 and rotates it clockwise, the crank handle 606 drives the transmission shaft 605 to rotate synchronously within the mounting box 11. The second bevel gear 604 at the end of the transmission shaft 605 rotates accordingly and meshes with the first bevel gear 603. The first bevel gear 603 drives the worm 602 to rotate around its own axis. The worm 602 then meshes with the worm gear 601 fixed to the rotating frame 10, thereby driving the entire rotating frame 10 to slowly rotate around the casting robot 8. The casting bucket on the rotating frame 10 rotates synchronously. The operator can then adjust the casting according to the casting pattern. The height and angle of the refractory shell pouring port control the number of rotations and speed of the crank handle 606, aligning the outlet of the pouring bucket with the refractory shell pouring port. The worm gear 601 and worm 602 transmission have a self-locking characteristic. After releasing the crank handle 606, the rotating frame 10 can automatically lock at the current angle and will not reverse due to the gravity of the molten liquid in the pouring bucket. No additional locking mechanism is required. The first bevel gear 603 is meshed with the second bevel gear 604, and the second bevel gear 604 is fixedly connected to the drive shaft 605. The drive shaft 605 is rotatably connected to the mounting box 11, and the crank handle 606 is fixedly connected to the drive shaft 605.

[0026] Please see Figure 2 , Figure 4 and Figure 9As shown, a slide table 7 is slidably connected to the base 1. A vibration structure 4 is provided on the slide table 7. The vibration structure 4 includes a slide column 401 fixedly connected to the slide table 7 and a threaded ring 402 threadedly connected to the slide column 401. A third spring 403 abuts against the threaded ring 402 and the base 1. A vibration motor 404 is installed on the slide table 7. The vibration motor 404 generates a periodic excitation force in the vertical direction, driving the slide table 7 to reciprocate in the vertical direction. The slide column 401 is vertically fixed to the bottom of the slide table 7 and can slide up and down within the corresponding guide hole in the base 1. The third spring 403 is sleeved on the outside of the slide column 401, with its lower end abutting against the upper surface of the base 1 and its upper end abutting against the lower surface of the threaded ring 402 threadedly connected to the slide column 401. When the vibration motor... When the motor 404 drives the slide table 7 to move downward, the slide table 7 drives the slide column 401 and the threaded ring 402 to move downward synchronously, thereby compressing the third spring 403 to cause elastic deformation and store elastic potential energy. When the excitation force of the vibration motor 404 turns upward, the third spring 403 releases elastic potential energy, pushing the threaded ring 402 and the slide column 401 to slide upward and reset. This cycle repeats, realizing continuous micro-amplitude high-frequency vibration of the slide table 7 and the refractory shell. A connecting shaft 405 is rotatably connected to the base 1. Two cams 406 are fixedly connected to the connecting shaft 405. A limit block 407 is slidably connected to the connecting shaft 405. The limit block 407 is engaged with the base 1. A pull block 408 is fixedly connected to the limit block 407. The pull block 408 is slidably connected to the connecting shaft 405.

[0027] Please see Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8As shown, the slide table 7 is equipped with a fixed structure 5, which specifically includes a guide frame 501 fixedly connected to the slide table 7 and three sets of connecting plates 502 slidably connected to the guide frame 501. Three sets of mounting seats 503 are also fixedly connected to the slide table 7. A lead screw 504 is rotatably connected between the two mounting seats 503 in each set. The two connecting plates 502 in each set are threadedly connected to the lead screw 504 on each mounting seat 503. The driving component 509 is electrically connected to the control box 9 via a wire, and its forward rotation is controlled by a preset program in the control box 9. When the driving component 509 operates, it drives the mounting shaft 506 to rotate, and the three synchronous pulleys 507 on the mounting shaft 506 rotate synchronously, connected by a synchronous belt 50. 8 drives three lead screws 504 to rotate synchronously. When the lead screws 504 rotate, they drive the two connecting plates 502 of each group to move synchronously towards each other, thereby clamping and fixing the refractory shell of the investment mold to prevent displacement during the casting process. At the same time, the quick clamping method can shorten the positioning time of the refractory shell. Two fixed seats 505 are fixedly connected on the slide table 7. A mounting shaft 506 is fixedly connected between the two fixed seats 505. Three synchronous pulleys 507 are fixedly connected on the mounting shaft 506. The lead screw 504 is fixedly connected to the synchronous pulleys 507. Each pair of synchronous pulleys 507 is driven by a synchronous belt 508. A driving component 509 is installed on the fixed seat 505. The mounting shaft 506 is driven to rotate by the driving component 509.

[0028] In use, the present invention first pushes the slide table 7 along the base 1 to the pouring position, pulls the pull block 408 inward to disengage the limiting block 407 from the slot of the base 1, and then rotates the connecting shaft 405 on the base 1, causing the connecting shaft 405 to drive the two cams 406 to rotate 180 degrees. After the cams 406 rotate, they can limit and fix the slide table 7. After the rotation is completed, the limiting block 407 re-engages with the base 1, which can ensure the stability of the slide table 7. Then, the stainless steel refractory mold shell to be poured is placed between the connecting plates 502 of the slide table 7, and then the drive on the fixing seat 505 is activated. The actuator 509 (preferably a servo motor) is electrically connected to the control box 9 via wires. The control box 9 controls its forward rotation by a preset program. When the actuator 509 is running, it drives the mounting shaft 506 to rotate. The three synchronous pulleys 507 on the mounting shaft 506 rotate synchronously and drive the three lead screws 504 to rotate synchronously via the synchronous belt 508. When the lead screws 504 rotate, they drive the two connecting plates 502 of each group to move synchronously towards each other, thereby clamping and fixing the refractory shell of the investment mold to prevent displacement during the casting process. At the same time, the quick clamping method can shorten the positioning time of the refractory shell. Next, the operator manipulates the casting robot 8 to move to the casting position. The casting robot 8 is adjusted in posture using manual-assisted point-to-point control. A casting barrel is installed on the rotating frame 10. The operator holds the crank 606 and rotates it clockwise. The crank 606 drives the transmission shaft 605 to rotate synchronously in the mounting box 11. The second bevel gear 604 at the end of the transmission shaft 605 rotates accordingly and meshes with the first bevel gear 603. The first bevel gear 603 drives the worm gear 602 to rotate around its own axis. The worm gear 602 then meshes with the worm wheel 601 fixed on the rotating frame 10, thereby driving the entire rotating frame 10 to slowly rotate around the casting robot 8. The casting barrel on the rotating frame 10 rotates synchronously. The operator can control the number of rotations and speed of the crank 606 according to the height and angle of the casting port of the refractory mold, aligning the discharge port of the casting barrel with the casting port of the refractory mold. The 601 worm gear and 602 transmission have a self-locking characteristic. After releasing the crank handle 606, the rotating frame 10 can automatically lock at the current angle and will not reverse due to the gravity of the molten metal in the pouring tank. No additional locking mechanism is required, making operation convenient, safe, and reliable. At the same time, the manual fine-tuning method can adapt to the pouring angle of different specifications of refractory shells, ensuring that the molten metal is injected into the cavity. Before pouring begins, press the pressing block 304 on the slide rod 303 to compress the second spring 307, causing the limiting shaft 305 to disengage from the first limiting hole 306 on the rotating frame 10, releasing the limiting constraint on the slide rod 303. Then, pull the slide rod 303 horizontally to slide along the rotating frame 10. The slide rod 303 drives the rack 301 to move along the guide rail 308 through the connecting rod 302. The rack 301 meshes with the transmission gear 206 on the transmission shaft 205, causing the transmission gear 206 to drive the rotating shaft 205 and the rotating frame 202 to rotate 90°. The protective cloth 204 (made of high-temperature resistant aluminum foil fiberglass cloth) on the rotating frame 202 completely covers the pouring tank, effectively blocking the splashing of high-temperature molten stainless steel during pouring, preventing operators from being burned, and preventing molten metal from splashing onto surrounding equipment and the ground, causing corrosion and pollution. Furthermore, the protective cloth 204 does not require manual handling, laying, or securing, significantly shortening preparation time before pouring, improving the continuity of the work process, and facilitating rapid casting. The protective cloth 204 also reduces heat loss from the molten metal in the pouring tank, maintaining good fluidity and promoting rapid filling within the refractory shell cavity, further accelerating the casting process. Simultaneously, it can prevent external dust and debris from falling into the molten metal, ensuring the forming quality of stainless steel castings. After releasing the pressing block 304, the second spring 307 resets and pushes the limiting shaft 305 into the second limiting hole 306 on the rotating frame 10, completing the fixation of the slide rod 303. The protective cloth 204 is clamped and fixed to the rotating frame 202 by the fixing assembly composed of the fixing plate 203, the sliding plate 208, and the first spring 207. The first spring 207 continuously pushes the sliding plate 208 and the fixing plate 203, keeping the protective cloth 204 in a taut state at all times. When disassembling, first press the sliding plate 208, and then move the adjusting rod 209 to drive the limiting rod 210 to slide.The limiting rod 210 hooks onto the edge of the rotating frame 202, thus limiting the sliding plate 208. This eliminates the need to continuously press down on the sliding plate 208 during assembly and disassembly, facilitating the quick removal and replacement of the protective cloth 204. After the pouring is completed, the connecting shaft 405 is rotated in the opposite direction to release the cam 406 from fixing the slide table 7. At this time, the vibration motor 404 on the slide table 7 is connected to the control box 9 through the wire and is started under control. The vibration motor 404 generates a periodic excitation force in the vertical direction, which drives the slide table 7 to reciprocate in the vertical direction. The slide column 401 is vertically fixed at the bottom of the slide table 7 and can slide up and down in the corresponding guide hole of the base 1. The third spring 403 is sleeved on the outside of the slide column 401, with its lower end abutting against the upper surface of the base 1 and its upper end abutting against the lower surface of the threaded ring 402 threaded to the slide column 401. When the vibration motor 404 drives the slide table 7 to move downward, the slide table 7 drives the slide column 401 and the threaded ring 402 to move downward synchronously. The third spring 403 is then compressed to cause elastic deformation and store elastic potential energy. When the excitation force of the vibration motor 404 turns upward, the third spring 403 releases its elastic potential energy, pushing the threaded ring 402 and the slide column 401 to slide upward and reset. This cycle repeats to achieve continuous micro-amplitude high-frequency vibration of the slide table 7 and the refractory shell. The combination of guiding sliding and elastic reset can ensure that the vibration direction is always perpendicular and avoid lateral movement. Rotating the threaded ring 402 can change its height on the slide column 401, thereby adjusting the initial compression and preload of the third spring 403 to adapt to the vibration requirements of refractory shells of different weights, so that the vibration energy is evenly transmitted to the interior of the refractory shell, accelerating the feeding process during the solidification of the molten liquid, and further improving the internal quality of the casting.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rapid investment casting device for stainless steel castings, comprising a base (1), wherein a casting assembly is provided on the base (1), characterized in that: The rotating frame (10) of the casting assembly is provided with a protective structure (2). The protective structure (2) includes two connecting seats (201) fixedly connected to the rotating frame (10) and a protective component provided on the two connecting seats (201). The protective component is provided with a fixing component for fixing the protective component and a limiting component for limiting the fixing component. The protective component is driven to rotate by the driving structure (3). The casting assembly includes a casting robot (8) and a rotating frame (10). The casting robot (8) is mounted on the base (1). The rotating frame (10) is rotatably connected to the casting robot (8). The control box (9) is mounted on the base (1). The protective assembly includes a rotating frame (202), a protective cloth (204), and a rotating shaft (205). The rotating shaft (205) is rotatably connected between the two connecting seats (201). The rotating frame (202) is fixedly connected to the rotating shaft (205). The protective cloth (204) is detachably connected to the rotating frame (202).

2. The stainless steel casting investment casting equipment according to claim 1, characterized in that: A sliding plate (208) is slidably connected to the rotating frame (202), a fixing plate (203) is fixedly connected to the sliding plate (208), a first spring (207) is fixedly connected between the sliding plate (208) and the rotating frame (202), and a protective cloth (204) abuts between the fixing plate (203) and the rotating frame (202).

3. The stainless steel casting investment casting equipment according to claim 2, characterized in that: An adjusting rod (209) is slidably connected to the sliding plate (208), a limiting rod (210) is fixedly connected to the adjusting rod (209), the limiting rod (210) is slidably connected to the rotating frame (202), and a transmission gear (206) is fixedly connected to the rotating shaft (205).

4. The stainless steel casting investment casting equipment according to claim 1, characterized in that: The drive structure (3) includes a rack (301) meshing with the transmission gear (206) and a connecting rod (302) fixedly connected to the rack (301). A slide rod (303) is fixedly connected to the connecting rod (302), and the slide rod (303) is slidably connected to the rotating frame (10).

5. The stainless steel casting investment casting equipment according to claim 4, characterized in that: A pressing block (304) is slidably connected to the slide rod (303), and a limiting shaft (305) is fixedly connected to the pressing block (304). The rotating frame (10) is provided with two limiting holes (306), and the limiting shaft (305) engages with one of the limiting holes (306).

6. The stainless steel casting investment casting equipment according to claim 5, characterized in that: A second spring (307) is fixedly connected between the pressing block (304) and the slide bar (303), a guide rail (308) is fixedly connected to the rotating frame (202), and the rack (301) is slidably connected to the guide rail (308).

7. The stainless steel casting investment casting equipment according to claim 1, characterized in that: The rotating frame (10) is driven to rotate by a transmission structure (6). The transmission structure (6) includes a worm gear (601) fixedly connected to the rotating frame (10) and a worm (602) meshing with the worm gear (601). A mounting box (11) is fixedly connected to the rotating frame (10). The worm (602) is rotatably connected to the mounting box (11). A first bevel gear (603) is fixedly connected to the worm (602). A second bevel gear (604) meshes with the first bevel gear (603). A transmission shaft (605) is fixedly connected to the second bevel gear (604). The transmission shaft (605) is rotatably connected to the mounting box (11). A crank handle (606) is fixedly connected to the transmission shaft (605).

8. The stainless steel casting investment casting equipment according to claim 1, characterized in that: A slide table (7) is slidably connected to the base (1). A vibration structure (4) is provided on the slide table (7). The vibration structure (4) includes a slide column (401) fixedly connected to the slide table (7) and a threaded ring (402) threadedly connected to the slide column (401). A third spring (403) abuts against the threaded ring (402) and the base (1). A vibration motor (404) is installed on the slide table (7). A connecting shaft (405) is rotatably connected to the base (1). Two cams (406) are fixedly connected to the connecting shaft (405). A limit block (407) is slidably connected to the connecting shaft (405). The limit block (407) engages with the base (1). A pull block (408) is fixedly connected to the limit block (407). The pull block (408) is slidably connected to the connecting shaft (405).

9. The stainless steel casting investment casting equipment according to claim 8, characterized in that: The slide (7) is provided with a fixed structure (5), which includes a guide frame (501) fixedly connected to the slide (7) and three sets of connecting plates (502) slidably connected to the guide frame (501). The slide (7) is also fixedly connected with three sets of mounting seats (503). A lead screw (504) is rotatably connected between the two mounting seats (503) in each set. The two connecting plates (502) in each set are threadedly connected to the lead screw (504) on each set of mounting seats (503).

10. The stainless steel casting investment casting equipment according to claim 9, characterized in that: Two fixed seats (505) are fixedly connected to the slide (7), and a mounting shaft (506) is fixedly connected between the two fixed seats (505). Three synchronous pulleys (507) are fixedly connected to the mounting shaft (506), and a synchronous pulley (507) is fixedly connected to the lead screw (504). Each pair of synchronous pulleys (507) is driven by a synchronous belt (508). A driving component (509) is installed on the fixed seat (505), and the mounting shaft (506) is driven to rotate by the driving component (509).

Images