A foam ceramic sand core gripper

Abstract

The application discloses a kind of foam ceramic sand core gripper, it is related to mechanical hand technical field, including base, force arm, cantilever, wrist connecting block and gripper unit, the gripper unit is fixed in wrist connecting block bottom, for grabbing brake disc sand core and carrying out grinding to its surface;Gripper unit includes fixed cover, grinding assembly one and grabbing assembly;Fixed cover is fixed in wrist connecting block bottom;Fixed cover inside sequentially fixed with grinding assembly one and grabbing assembly from top to bottom, grinding assembly one is used to carry out grinding treatment to sand core upper surface, the grabbing assembly is used to grab sand core;It can realize flexible self-adapting grabbing to expand the applicable scope of irregular sand core, all-around fine grinding ensures that sand core surface is free from burr residue, polishing pressure is adjustable to further improve grinding accuracy and consistency, grabbing and grinding collaborative work improve overall production efficiency technical effect.

Description

Technical Field

[0001] This invention relates to the field of robotic arm technology, and more particularly to a foam ceramic sand core gripper. Background Technology

[0002] Brake discs are the core component of automotive braking systems. Their manufacturing involves key aspects such as material selection, casting, machining, heat treatment, and quality inspection. Among these, the quality of brake discs (such as heat dissipation efficiency, strength, and wear resistance) directly depends on the design and processing quality of the foam ceramic sand core.

[0003] The brake disc manufacturing process is a closed-loop process of sand core preparation, processing, and casting. The coordination between the sand core and the gripper is a key link. The foam ceramic material is made into a sand core that meets the design requirements by a core shooting machine (such as an automatic sand processing line). Then, the gripper picks up and transports the sand core, and grinds and cleans it to ensure the accuracy of the sand core. Finally, the processed sand core is placed into a sand mold, the mold is closed, molten iron is poured in, and after cooling, a brake disc blank is formed. After rough turning, fine turning, drilling and other processing, the finished brake disc is finally obtained.

[0004] While existing methods for gripping and grinding brake disc sand cores improve operational efficiency to some extent, the diverse structures and fragile materials of the sand cores present several drawbacks in actual use. Firstly, insufficient gripping adaptability leads to sand core damage risks: rigid gripping mechanisms cannot flexibly adapt to irregularly shaped sand cores, resulting in poor gripping stability and a tendency for sand core deformation or breakage. If sand core deformation causes deviations in the internal air duct dimensions, it can lead to poor heat dissipation of the brake disc (such as heat accumulation during braking), thereby reducing braking safety. Secondly, incomplete or excessive grinding affects casting quality: if burrs on the sand core surface are not thoroughly cleaned or grinding coverage is incomplete, defects such as sand holes and sand inclusions are easily generated during casting, directly affecting the service life and reliability of the brake disc. Conversely, excessive grinding damages the surface integrity of the sand core, making it difficult to meet the requirements of high-precision casting scenarios and ultimately reducing the overall manufacturing quality of the brake disc. Summary of the Invention

[0005] This application provides a foam ceramic sand core gripper, which solves the technical problems of existing technologies, such as excessively rigid gripping which cannot adapt to irregular sand core structures, leading to easy deformation or breakage; limited grinding function which cannot fully cover the burrs on the upper surface and sides of the sand core; uncontrollable grinding force which easily leads to over-grinding or incomplete grinding; and low overall work efficiency and poor adaptability. The application achieves the technical effects of flexible adaptive gripping to expand the applicability to irregular sand cores, all-round fine grinding to ensure no burr residue on the sand core surface, adjustable grinding pressure to further improve grinding accuracy and consistency, and coordinated gripping and grinding to improve overall production efficiency.

[0006] This application provides a foam ceramic sand core gripper, including a base, a lever arm, a cantilever, a wrist connecting block and a gripper unit. The gripper unit is fixed to the bottom of the wrist connecting block and is used to grip the brake disc sand core and grind its surface. The gripper unit includes a fixing cover, a grinding component 1, and a gripping component; the fixing cover is fixed to the bottom of the wrist connecting block; the grinding component 1 and the gripping component are fixed inside the fixing cover from top to bottom, the grinding component 1 is used to grind the upper surface of the sand core, and the gripping component is used to grip the sand core.

[0007] Furthermore, the lever arm is a pneumatic telescopic structure fixed on the base; the cantilever is slidably connected to the top of the lever arm via an electrically controlled slider; the wrist connecting block is fixed to the end of the lever arm, and the gripper unit moves in the horizontal and vertical directions through the lever arm and cantilever to complete the gripping of the brake disc sand core.

[0008] Furthermore, the grinding assembly includes a motor, a rotating plate, a grinding block, and a grinding plate; The motor is fixed to the bottom of the wrist connecting block and located inside the fixing cover; the rotating plate is fixed to the bottom of the motor output shaft; the grinding block is fixed to the middle of the rotating plate and grinds the center position of the upper surface of the sand core; multiple sets of grinding plates are provided, evenly arranged along the circumference of the rotating plate, and slidably connected inside the rotating plate.

[0009] Furthermore, the grinding plate includes a single plate, an auxiliary plate, a brush, and an air jet. The single-piece plate is arranged at an angle and slidably connected to the inside of the rotating plate by an electric slider, with a pointed end; the auxiliary plate is arranged at an angle and fixed in the middle of the single-piece plate, forming a triangular space between the two; multiple brushes and air nozzles are provided, arranged alternately and evenly along the length of the auxiliary plate; the air nozzles are connected to an external air pump through air passages, used to blow away the loose sand generated after grinding and to clean it.

[0010] Furthermore, the gripping assembly includes a fixed block, an electrically telescopic rod, and a ring belt; The fixed block and the electric telescopic rod are a set, and multiple sets are evenly arranged along the circumference of the fixed cover. The telescopic ends of the multiple electric telescopic rods are fixed with a ring belt. By adjusting the electric telescopic rods at different positions, different degrees of telescopic extension and contraction are achieved, thereby pulling the ring belt to generate deformation to adapt to the gripping of sand cores of different shapes.

[0011] Furthermore, the ring band is an elastic ring structure and its interior is filled with hydrogel, which enables the gripping of the sand core through circumferential flexible clamping.

[0012] Furthermore, the gripper unit also includes a second grinding component, which corresponds one-to-one with the ring belt and is disposed inside the corresponding ring belt, including a drive rotating ring and a grinding body; The drive ring is rotatably connected to the inside of the fixed cover via an electric slider; the grinding body is provided in two sets, arranged vertically and alternately, and fixed on the inner side of the ring belt.

[0013] Furthermore, the electric telescopic rod is fixed to the inner side of the drive ring by a fixing block; the rotation of the drive ring drives the electric telescopic rod and the ring belt to rotate, thus polishing the circumferential side of the sand core.

[0014] Furthermore, the grinding body has a capsule structure and is filled with magnetic powder; an electromagnet is fixed inside the ring and on the opposite side of the grinding body. By controlling the magnetic field strength and direction of the electromagnet, the contact pressure of the grinding body on the side of the sand core is controlled, thereby controlling the grinding force.

[0015] Furthermore, the gripping components are provided in two sets, arranged vertically and rotatably connected inside the fixed cover. By controlling the two sets of gripping components in sequence, one set fixes the sand core through an electric telescopic rod and a ring belt, while the other set performs circumferential grinding on the sand core through a ring belt and a grinding body. The two sets of gripping components move alternately to perform circumferential rotation and comprehensive grinding on the sand core.

[0016] One or more technical solutions provided in this application have at least the following technical effects or advantages: By setting up an electric telescopic rod and ring belt for the gripping component, adaptive deformation action can be performed to achieve circumferential enveloping gripping; through the rotating plate and grinding plate of the first grinding component, the upper surface can be fully ground; through the electromagnet and grinding body of the second grinding component, the grinding contact pressure can be adjusted, and the electromagnet controls the distribution of magnetic powder, so that the grinding body contacts the side of the sand core with controllable pressure, achieving precise grinding; through the alternating action of the two sets of gripping components, a comprehensive circumferential grinding effect is achieved, improving efficiency and avoiding stress concentration. This effectively solves the technical problems of existing technologies, such as excessive gripping rigidity that cannot adapt to irregular sand core structures, leading to easy deformation or breakage; single grinding function that cannot fully cover the burrs on the upper surface and side of the sand core; uncontrollable grinding force that easily leads to over-grinding or incomplete grinding; and low overall operating efficiency and poor adaptability. It achieves the technical effects of flexible adaptive gripping to expand the applicability to irregular sand cores, comprehensive fine grinding to ensure no burr residue on the sand core surface, adjustable grinding pressure to further improve grinding accuracy and consistency, and coordinated operation of gripping and grinding to improve overall production efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a foam ceramic sand core gripper according to the present invention.

[0018] Figure 2This is a schematic diagram of the gripper unit of a foam ceramic sand core gripper according to the present invention.

[0019] Figure 3 This is a partial structural cross-sectional view of the gripper unit of a foam ceramic core gripper according to the present invention.

[0020] Figure 4 This is a three-dimensional structural schematic diagram of a grinding component for a foam ceramic core gripper according to the present invention.

[0021] Figure 5 This is a partial structural diagram of the grinding plate of a foam ceramic core gripper according to the present invention.

[0022] Figure 6 This is a three-dimensional structural diagram of the gripping component and the grinding component two of the foam ceramic sand core gripper of the present invention.

[0023] Figure 7 This is a longitudinal full-section schematic diagram of the two gripping components of a foam ceramic sand core gripper according to the present invention.

[0024] Figure 8 This invention relates to a foam ceramic core gripper. Figure 7 A magnified view of a portion of point A in the middle.

[0025] In the diagram: 100, base; 110, lever arm; 120, cantilever; 130, wrist connecting block; 200, gripper unit; 210, fixing cover; 220, grinding assembly one; 221, motor; 222, rotating plate; 223, grinding block; 230, gripping assembly; 231, fixing block; 232, electric telescopic rod; 240, grinding plate; 241, single plate; 242, auxiliary plate; 243, brush; 244, air nozzle; 250, ring belt; 251, hydrogel; 260, drive ring; 270, grinding body; 271, magnetic powder; 272, electromagnet. Detailed Implementation

[0026] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0027] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Example 1: As Figures 1 to 3 As shown, this application discloses a foam ceramic sand core gripper, including a base 100, a lever arm 110, a cantilever 120, a wrist connecting block 130, and a gripper unit 200. The gripper unit 200 is fixed to the bottom of the wrist connecting block 130 and is used to grip the brake disc sand core and grind its surface. The gripper unit 200 includes a fixing cover 210, a grinding component 220, and a gripping component 230. The fixing cover 210 is fixed to the bottom of the wrist connecting block 130. The grinding component 220 and the gripping component 230 are fixed inside the fixing cover 210 from top to bottom. The grinding component 220 is used to grind the upper surface of the sand core, and the gripping component 230 is used to grip the sand core.

[0030] The lever arm 110 is a pneumatic telescopic structure and is fixed on the base 100; the cantilever 120 is slidably connected to the top of the lever arm 110 via an electrically controlled slider; the wrist connecting block 130 is fixed to the end of the lever arm 110. The gripper unit 200 moves in the horizontal and vertical directions through the lever arm 110 and the cantilever 120 to complete the gripping of the brake disc sand core.

[0031] like Figures 2 to 5 As shown, the grinding assembly 220 includes a motor 221, a rotating plate 222, a grinding block 223, and a grinding plate 240; The motor 221 is fixed to the bottom of the wrist connecting block 130 and located inside the fixing cover 210; the rotating plate 222 is fixed to the bottom of the output shaft of the motor 221; the grinding block 223 is fixed to the middle of the rotating plate 222 and grinds the center position of the upper surface of the sand core; multiple sets of grinding plates 240 are provided, evenly arranged along the circumference of the rotating plate 222, and slidably connected inside the rotating plate 222.

[0032] like Figure 4 and Figure 5 As shown, the grinding plate 240 includes a single plate 241, an auxiliary plate 242, a brush 243, and an air jet 244; The single-piece plate 241 is arranged at an angle and slidably connected to the rotating plate 222 via an electric slider, with a pointed end. The auxiliary plate 242 is arranged at an angle and fixed in the middle of the single-piece plate 241, forming a triangular space with the single-piece plate 241. Multiple brushes 243 and air nozzles 244 are provided, arranged alternately and evenly along the length of the auxiliary plate 242. The air nozzles 244 are connected to an external air pump through air channels to blow away the loose sand generated after grinding and clean it. By having the brushes 243 and air nozzles 244 work alternately, real-time cleaning after grinding is achieved, preventing loose sand from affecting subsequent processes.

[0033] This application utilizes a motor 221 to drive a rotating plate 222 to rotate smoothly at a controllable speed, enabling the grinding block 223 to perform continuous and uniform rotary grinding on the center of the upper surface of the sand core. Simultaneously, multiple grinding plates 240 are circumferentially unfolded via an electric slider. The sharp-angled single plate 241 achieves scraping grinding on the edge of the upper surface of the sand core, and can also form a triangular space with the auxiliary plate 242. This allows the dust scraped off by the single plate 241 to fall into the triangular space and be quickly and directionally blown away by the air jet 244 along the triangular space. Then, the brush 243 further cleans the residual sand on the upper surface of the sand core, achieving comprehensive and fine grinding of the upper surface of the sand core from the center to the edge, and simultaneously cleaning grinding residue to avoid the floating sand affecting the grinding quality.

[0034] like Figures 2 to 8 As shown, the gripping component 230 includes a fixing block 231, an electric telescopic rod 232, and a ring belt 250; The fixed block 231 and the electric telescopic rod 232 are a set, and multiple sets are provided and evenly arranged around the fixed cover 210. The telescopic ends of multiple electric telescopic rods 232 are fixed with a ring belt 250. By adjusting the electric telescopic rods 232 at different positions, different degrees of telescopic extension and contraction are achieved, thereby pulling the ring belt 250 to generate deformation to adapt to the gripping of sand cores of different shapes.

[0035] The ring 250 is an elastic ring structure and its interior is filled with hydrogel 251, which enables the gripping of the sand core through circumferential flexible clamping.

[0036] This application achieves adaptive gripping by setting up a gripping component 230, which enhances its adaptability to irregularly shaped sand cores. Specifically, through the cooperation of multiple electrically operated telescopic rods 232 arranged in a ring array, a fixing block 231, and a ring belt 250 in the gripping component 230, the differential telescopic amounts of the electrically operated telescopic rods 232 at different positions can be individually controlled. This allows for precise telescopic movements based on the shape of the sand core, smoothly pulling and driving the ring belt 250 to produce controllable deformation, so that the ring belt 250 tightly fits the side of the sand core, achieving circumferential adaptive wrapping gripping; and during the wrapping of the sand core... After surrounding the core, the electric telescopic rod 232 is extended to grasp it. Under the action of the ring belt 250 filled with hydrogel 251, the ring belt 250 can perform flexible wrapping action in an elastic deformation manner. At the same time, the hydrogel 251 undergoes flow deformation under pressure to form a uniformly distributed buffer layer, absorbing local impacts and preventing the sand core from breaking due to hard contact. It also enhances the fit of the grasping contact surface, achieving gentle clamping of the sand core's sides, further making the grasping force evenly distributed, avoiding local stress concentration, and ensuring that the sand core maintains its shape integrity during the grasping process.

[0037] like Figure 2 , Figure 3 and Figures 6 to 8 As shown, the gripper unit 200 also includes a grinding component two, which corresponds one-to-one with the ring belt 250 and is disposed inside the corresponding ring belt 250, including a drive rotating ring 260 and a grinding body 270. The drive ring 260 is rotatably connected to the inside of the fixed cover 210 via an electric slider; the grinding body 270 is provided in two sets, arranged vertically and alternately, and fixed inside the ring belt 250.

[0038] The electric telescopic rod 232 is fixed to the inner side of the drive ring 260 by the fixing block 231; the rotation of the drive ring 260 drives the electric telescopic rod 232 and the ring belt 250 to rotate, and polishes the circumferential side of the sand core.

[0039] The grinding body 270 has a capsule structure and is filled with magnetic powder 271. An electromagnet 272 is fixed inside the ring 250 on the opposite side of the grinding body 270. By controlling the magnetic field strength and direction of the electromagnet 272, the contact pressure of the grinding body 270 on the side of the sand core is controlled, thereby controlling the grinding force.

[0040] Two sets of gripping components 230 are arranged vertically and rotatably connected inside the fixed cover 210. By controlling the two sets of gripping components 230 in sequence, one set fixes the sand core through the electric telescopic rod 232 and the ring belt 250, while the other set rotates through the ring belt 250 and the grinding body 270 to perform circumferential grinding on the sand core. The two sets of gripping components 230 alternately move to perform circumferential rotation and comprehensive grinding on the sand core.

[0041] This application achieves circumferential grinding of the sand core's circumferential side surface by setting up a drive ring 260 and a grinding body 270. Specifically, the drive ring 260 drives the electric telescopic rod 232 and the ring belt 250 to rotate synchronously in a stable manner, so that the alternating grinding body 270 performs a continuous sweeping grinding action along the circumferential side surface of the sand core. The grinding action can cover the entire side surface area, avoiding grinding dead corners and ensuring that burrs are removed evenly. Furthermore, through the coordination of the grinding body 270, magnetic powder 271, and electromagnet 272, precise control of the grinding force is achieved. Specifically, the electromagnet... The magnetism and magnetic force of 272 can be flexibly adjusted according to the material requirements of the sand core. Through the magnetic force, the magnetic powder 271 in the grinding body 270 is driven to change the distribution in a non-contact manner, thereby changing the contact pressure of the grinding body 270 on the side of the sand core. This allows for controllable grinding from light touch to deep grinding, and the grinding pressure can be adjusted in real time. This makes it suitable for different degrees of grinding at different positions on the side of the sand core, achieving circumferential fine grinding of the side of the sand core. This avoids over-grinding that damages the surface of the sand core or incomplete grinding, improving the grinding accuracy and further ensuring the quality of brake disc sand core manufacturing.

[0042] By setting up an alternating action mechanism of two sets of gripping components 230, efficient and comprehensive grinding is achieved. Specifically, the upper gripping component 230 first fixes the sand core, while the lower gripping component 230 and the second grinding component perform circumferential grinding. After completion, the action is switched, with the lower gripping component 230 fixing the core and the upper gripping component 230 and the second grinding component performing flexible circumferential grinding. This achieves continuous grinding of the sand core in the entire circumference, effectively avoiding stress concentration at single points, ensuring that each side of the sand core is uniformly treated, improving grinding efficiency and coverage, solving the problems of discontinuous grinding and low efficiency, and realizing fully automated processing of the sand core.

[0043] The magnetic powder 271 is used in conjunction with the electromagnet 272 to control the contact pressure of the grinding body 270 on the side of the sand core. It is preferably micro powder of permanent magnet materials such as neodymium iron boron and strontium ferrite. When used in conjunction with the electromagnet 272, the interaction force between the magnetic powder 271 particles can be adjusted by changing the magnetic field strength, thereby controlling the overall rigidity of the grinding body 270 and the pressure on the sand core.

[0044] In actual operation, the steps of this embodiment are as follows: S1: The gripper unit 200 is moved and positioned by the coordinated action of the base 100, lever arm 110 and cantilever 120. The lever arm 110 is a pneumatic telescopic structure. The cantilever 120 slides through an electrically controlled slider, driving the wrist connecting block 130 to move the gripper unit 200 horizontally or vertically above the brake disc sand core. S2: The two sets of gripping components 230 are started, and the electric telescopic rods 232 in the two sets of gripping components 230 are controlled to pull the corresponding ring belt 250 to generate deformation, and to fit the side of the sand core with a flexible wrapping action to achieve circumferential adaptive gripping. S3: Grinding component 220 is working. Motor 221 drives rotating plate 222 to rotate, which drives grinding block 223 to perform fixed-point grinding on the center of the upper surface of sand core. At the same time, multiple grinding plates 240 are slid out by electric sliders. Individual plates 241 scrape the edges with sharp corner structure, auxiliary plates 242 form triangular space, and brushes 243 and air nozzles 244 move alternately to clean the loose sand. S4: At the same time, the second grinding component is activated, driving the rotating ring 260 to rotate via the electric slider, which in turn drives the electric telescopic rod 232 and the ring belt 250 to rotate synchronously, so that the upper and lower interlaced grinding bodies 270 perform sweeping grinding along the circumferential side of the sand core. By controlling the magnetic field strength and direction of the electromagnet 272, the magnetic powder 271 inside the grinding body 270 changes its distribution under the control of the electromagnet 272, thus controlling the grinding pressure. The two sets of gripping components 230 alternately operate: one set fixes the sand core, and the other set performs grinding to ensure full coverage. S5: After grinding is completed, the gripper unit 200 uses the lever arm 110 and cantilever 120 to transport the sand core to the designated position, completing the conveying and waiting for the next process of the brake disc sand core.

[0045] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages: This application's foam ceramic sand core gripper, through the setting of the electric telescopic rod 232 and the ring belt 250 of the gripping component 230, can perform adaptive deformation action to achieve circumferential covering gripping; through the rotating plate 222 and grinding plate 240 of the first grinding component 220, the upper surface can be fully ground; through the electromagnet 272 and grinding body 270 of the second grinding component, the grinding contact pressure can be adjusted, and the electromagnet 272 controls the distribution of magnetic powder 271, so that the grinding body 270 contacts the side of the sand core with controllable pressure to achieve precise grinding; through the alternating action of the two sets of gripping components 230, the circumferential comprehensive grinding effect is achieved, improving efficiency and avoiding stress concentration; it achieves the technical effects of flexible adaptive gripping to expand the applicability to irregular sand cores, all-round fine grinding to ensure that the sand core surface is free of burr residue, adjustable grinding pressure to further improve grinding accuracy and consistency, and coordinated operation of gripping and grinding to improve overall production efficiency.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A foam ceramic core gripper, characterized in that, It includes a base (100), a lever arm (110), a cantilever (120), a wrist connecting block (130), and a gripper unit (200). The gripper unit (200) is fixed to the bottom of the wrist connecting block (130) and is used to grip the brake disc sand core and grind its surface. The gripper unit (200) includes a fixing cover (210), a grinding component (220), and a gripping component (230); the fixing cover (210) is fixed to the bottom of the wrist connecting block (130); the grinding component (220) and the gripping component (230) are fixed inside the fixing cover (210) from top to bottom, the grinding component (220) is used to grind the upper surface of the sand core, and the gripping component (230) is used to grip the sand core.

2. The foam ceramic core gripper as described in claim 1, characterized in that, The lever arm (110) is a pneumatic telescopic structure and is fixed on the base (100); the cantilever (120) is slidably connected to the top of the lever arm (110) through an electrically controlled slider; the wrist connecting block (130) is fixed to the end of the lever arm (110), and the gripper unit (200) can move in the horizontal and vertical directions through the lever arm (110) and the cantilever (120) to complete the gripping of the brake disc sand core.

3. The foam ceramic core gripper as described in claim 1, characterized in that, The first grinding assembly (220) includes a motor (221), a rotating plate (222), a grinding block (223), and a grinding plate (240). The motor (221) is fixed at the bottom of the wrist connecting block (130) and located inside the fixing cover (210); the rotating plate (222) is fixed at the bottom of the output shaft of the motor (221); the grinding block (223) is fixed in the middle of the rotating plate (222) and grinds the center position of the upper surface of the sand core; the grinding plate (240) is provided in multiple sets, evenly arranged along the circumference of the rotating plate (222) and slidably connected inside the rotating plate (222).

4. A foam ceramic core gripper as described in claim 3, characterized in that, The grinding plate (240) includes a single plate (241), an auxiliary plate (242), a brush (243) and an air jet (244). The single plate (241) is arranged at an angle and is slidably connected to the inside of the rotating plate (222) by an electric slider, and its end is a pointed structure; the auxiliary plate (242) is arranged at an angle and fixed in the middle of the single plate (241), forming a triangular space with the single plate (241); multiple brushes (243) and air nozzles (244) are provided, and they are arranged alternately and evenly along the length of the auxiliary plate (242); the air nozzles (244) are connected to an external air pump through an air passage, and are used to blow away the floating sand generated after grinding and clean it.

5. A foam ceramic core gripper as described in claim 1, characterized in that, The gripping assembly (230) includes a fixed block (231), an electrically telescopic rod (232), and a ring belt (250); The fixed block (231) and the electric telescopic rod (232) are a set, and multiple sets are provided and evenly arranged around the fixed cover (210). The telescopic ends of multiple electric telescopic rods (232) are fixed with a ring belt (250). By adjusting the electric telescopic rods (232) at different positions, different degrees of telescopic extension and contraction are performed, thereby pulling the ring belt (250) to generate deformation to adapt to the gripping of sand cores of different shapes.

6. A foam ceramic core gripper as described in claim 5, characterized in that, The ring (250) is an elastic ring structure and its interior is filled with hydrogel (251), which enables the gripping of the sand core through circumferential flexible clamping.

7. A foam ceramic core gripper as described in claim 1, characterized in that, The gripper unit (200) also includes a grinding component two, which corresponds one-to-one with the ring belt (250) and is disposed inside the corresponding ring belt (250), including a drive rotating ring (260) and a grinding body (270). The drive ring (260) is rotatably connected inside the fixed cover (210) via an electric slider; the grinding body (270) is provided in two sets, arranged vertically and alternately, and fixed inside the ring belt (250).

8. A foam ceramic core gripper as described in claim 5, characterized in that, The electric telescopic rod (232) is fixed to the inside of the drive ring (260) by the fixing block (231); the electric telescopic rod (232) and the ring belt (250) are rotated by the rotation of the drive ring (260) to grind the circumferential side of the sand core.

9. A foam ceramic core gripper as described in claim 7, characterized in that, The grinding body (270) is a capsule structure and is filled with magnetic powder (271); an electromagnet (272) is fixed inside the ring (250) on the opposite side of the grinding body (270). By controlling the magnetic field strength and direction of the electromagnet (272), the contact pressure of the grinding body (270) on the side of the sand core is controlled, thereby controlling the grinding force.

10. A foam ceramic core gripper as described in claim 9, characterized in that, The gripping components (230) are provided in two sets, arranged vertically, and both are rotatably connected inside the fixed cover (210). By controlling the two sets of gripping components (230) in sequence, one set fixes the sand core through the electric telescopic rod (232) and the ring belt (250), while the other set rotates through the ring belt (250) and the grinding body (270) to perform circumferential grinding on the sand core. The two sets of gripping components (230) alternately move to perform circumferential rotation and comprehensive grinding on the sand core.

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