A grinding ball casting device and method

Abstract

The present invention relates to the field of casting molding technology, and discloses a grinding ball casting device and method. The grinding ball casting device comprises: a workpiece processing platform with a rotating groove on its top; a support frame fixed to one side of the workpiece processing platform, with its top flush with the workpiece processing platform; and a rotary drive unit located below the workpiece processing platform, the drive end of which is detachably connected to the bottom of the casting mold via a hexagonal docking interface. The present invention achieves precise coordination between the lifting and lowering of the protective cover and the loading and unloading of the mold through a phased lifting control and real-time feedback mechanism. The servo drive combined with sensor feedback optimizes the motion trajectory and positioning accuracy, significantly reducing mechanical impact and operational risks. The intelligent anomaly detection module can quickly respond to faults to ensure safe operation of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of casting and molding, and more particularly to a grinding ball casting device and method. Background Art

[0002] Grinding balls are widely used as an essential grinding medium in numerous fields, including mining, cement, and chemicals. They are typically constructed from high-hardness materials such as alloy steel, ceramics, and high-chromium cast iron, and are spherical or nearly spherical in shape. During operation, the grinding balls achieve material crushing, refinement, and mixing through collision and rolling friction with the material. Grinding balls are typically produced using a casting process, with centrifugal casting, due to its unique advantages, becoming a highly efficient method for producing wear-resistant grinding balls.

[0003] Conventional grinding ball casting systems typically rely on manual intervention or simple lifting mechanisms for mold assembly and disassembly, resulting in cumbersome procedures, insufficient positioning accuracy, and significant safety hazards. Furthermore, the mold is manually disassembled after lifting the protective cover directly using a single power source, lacking automated push and coordinated control mechanisms. This results in low production efficiency and makes it difficult to address abnormal operating conditions such as mold displacement or overload jamming. Summary of the Invention

[0004] The purpose of the present invention is to provide a grinding ball casting device and method to solve the above-mentioned technical problems.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0006] The present invention provides a grinding ball casting device, comprising:

[0007] A workpiece processing platform with a rotating trough on top;

[0008] The support frame is fixed to one side of the workpiece processing platform, and the top is flush with the workpiece processing platform;

[0009] The rotary drive unit is located below the workpiece processing platform, and its drive end is detachably connected to the bottom of the casting mold through a hexagonal docking interface;

[0010] A protective cover covering the top of the workpiece processing platform;

[0011] At least two servo-controlled linear actuators are symmetrically located on either side of the workpiece handling platform, with their telescopic ends connected to protective covers and built-in displacement sensors providing real-time feedback on the lifting height;

[0012] The mold disassembly part includes two lifting mechanisms symmetrically slidably arranged on the inner side of the protective cover, a limiting clamp seat arranged at the bottom of the lifting mechanism, and a cooperative transmission mechanism connecting the limiting clamp seat and the protective cover;

[0013] The servo-controlled linear actuator controls the raising and lowering of the protective cover in three stages:

[0014] The first stage: the protective cover is lifted at a first speed to a safe height away from the casting mold, triggering the lifting mechanism to push the casting mold out of the rotating tank;

[0015] The second stage: switch to the second speed and continue to lift to the preset linkage height. The coordinated transmission mechanism drives the limit clamp to rotate at a preset inclination angle, pushing the casting mold horizontally to the support frame.

[0016] Phase 3: When the protective cover descends, the closed-loop feedback of the servo-controlled linear actuator is used to synchronously adjust the reset angle of the limit clamp to ensure the precise return of the casting mold.

[0017] Preferably, the lifting mechanism includes a pushing body and a vertically fixed stabilizing plate, movable slots are provided on both sides of the stabilizing plate, the inner side of the protective outer cover is slidably connected to the movable slots through the movable body, and an arc-shaped limiting abutment body is provided on the top of the pushing body.

[0018] Preferably, the limiting clamp seat includes an arc-shaped rotating bracket and at least two rolling wheels, the rotating axis of the rolling wheel body is inclined at an angle of 15-30° to the radial direction of the casting mold, and the surface is provided with anti-slip grooves.

[0019] Preferably, the cooperative transmission mechanism includes a limiting rod body fixed to the workpiece processing platform, a mating gear, and two bevel gears meshing with each other, one of the bevel gears is connected to the rotating bracket, and the other bevel gear is connected to the mating gear through a transmission shaft, the protective outer cover is provided with an avoidance groove body, and the upper end of the limiting rod body is provided with a meshing groove body section meshing with the mating gear.

[0020] Preferably, the rotary drive unit includes a driving motor, a rotating rod and a transmission wheel set, and the top end of the rotating rod is adapted to the hexagonal docking interface at the bottom of the casting mold.

[0021] Preferably, at least one of the rolling wheel bodies is located at the central axis of the casting mold, and the others are located on the semicircular side of the casting mold away from the supporting frame.

[0022] Preferably, the servo-controlled linear actuator is communicatively connected to a PLC controller, and dynamically adjusts the lifting speed according to feedback data from a displacement sensor.

[0023] Preferably, a torque sensor is provided between the bevel gear and the transmission shaft of the cooperative transmission mechanism. When it is detected that the pushing resistance exceeds a threshold value, the PLC controller is triggered to suspend the lifting action and issue an alarm.

[0024] The beneficial effects of the present invention are:

[0025] The present invention achieves precise coordination between the lifting of the protective cover and the loading and unloading of the mold through phased lifting control and real-time feedback mechanism. The servo drive combined with sensor feedback optimizes the motion trajectory and positioning accuracy, significantly reducing mechanical shock and operational risks. The intelligent anomaly detection module can respond quickly when a fault occurs to ensure the safe operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of a grinding ball casting device provided by the present invention;

[0027] Figure 2 This is an exploded view of a grinding ball casting device provided by the present invention;

[0028] Figure 3 This is a structural schematic diagram of a mold disassembly portion in a grinding ball casting device provided by the present invention;

[0029] Figure 4 It is a structural schematic diagram of a mold disassembly part, a protective cover and a servo-controlled linear actuator in a grinding ball casting device provided by the present invention;

[0030] Figure 5 This is a schematic structural diagram of a limiting clamp seat in a grinding ball casting device provided by the present invention;

[0031] Figure 6 This is a side view of a grinding ball casting device provided by the present invention;

[0032] Figure 7 It is a structural schematic diagram of a centrifugal drive in a grinding ball casting device provided by the present invention.

[0033] In the figure: 1. workpiece processing platform; 11. rotating trough; 2. supporting frame; 3. rotating drive unit; 31. driving motor; 32. rotating rod; 33. transmission wheel group; 4. protective cover; 5. servo-controlled linear actuator; 6. mold disassembly unit; 61. lifting mechanism; 611. pushing body; 612. stabilizing plate; 613. movable notch; 614. movable body; 615. limiting abutment body; 62. limiting clamp seat; 621. rotating bracket; 622. rolling wheel body; 63. cooperative transmission mechanism; 631. limiting rod body; 632. matching gear; 633. bevel gear; 634. transmission shaft body; 635. meshing trough body section; 636. avoidance trough body; 7. casting mold; 8. drainage funnel. DETAILED DESCRIPTION

[0034] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed solely to enable those skilled in the art to better understand and implement the subject matter described herein, and that the functions and arrangements of the elements discussed may be varied without departing from the scope of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0035] Example 1

[0036] Please refer to Figures 1 to 3 A grinding ball casting device is specifically constructed as follows: it includes a workpiece processing platform 1, a support frame 2, a rotary drive unit 3, a protective cover 4, at least two servo-controlled linear actuators 5, and a mold removal unit 6. A rotary groove 11 is provided on the upper portion of the workpiece processing platform 1. During the pouring operation of the casting mold 7, the mold is located within this rotary groove 11. The support frame 2 is securely mounted on one side of the workpiece processing platform 1, with its top surface aligned with the top surface of the workpiece processing platform 1. It primarily serves as an area for loading and unloading the casting mold 7. The rotary drive unit 3 is mounted below the workpiece processing platform 1, with one end capable of removably mounting at the center of the bottom of the casting mold 7. During centrifugal pouring, the rotary drive unit 3 drives the casting mold 7 to rotate. The bottom of the protective cover 4 is tightly fitted to the top surface of the workpiece processing platform 1, thereby preventing molten metal from splashing out of the casting mold 7. Two servo-controlled linear actuators 5 are symmetrically fixed to either side of the workpiece processing platform 1. Their telescopic ends are connected to the protective cover 4. The synchronized telescopic movement of the two servo-controlled linear actuators 5 collectively drives the protective cover 4 to automatically raise and lower the workpiece processing platform 1, thereby leaving the top of the workpiece processing platform 1 open and unobstructed, facilitating the loading and unloading of the casting mold 7. The servo-controlled linear actuators 5 utilize electric push rods composed of a servo motor and a ball screw. Displacement sensors are built into the servo-controlled linear actuators 5 and communicate with an external PLC controller. The displacement sensors provide real-time feedback on the lift height, and the servo-controlled linear actuators 5 dynamically adjust the lift speed based on this feedback. The displacement sensors utilize either optical or magnetic scales and can be embedded within the servo-controlled linear actuators 5 or externally mounted on the lift rails.

[0037] The mold disassembly part 6 is arranged on the workpiece processing platform 1, and the mechanism includes two lifting mechanisms 61, two limiting clamps 62 and two cooperative transmission mechanisms 63. Among them, the two lifting mechanisms 61 are symmetrically arranged on the inner side of the protective outer cover 4 in a sliding manner, and the two limiting clamps 62 are respectively and correspondingly rotatably installed at the bottom of the two lifting mechanisms 61. When the casting mold 7 is in a rotating state, the two symmetrically arranged limiting clamps 62 form rolling contact with the outer peripheral side of the casting mold 7, which can play a role in limiting and fixing the casting mold 7. The two cooperative transmission mechanisms 63 respectively establish a transmission connection relationship between the limiting clamps 62 and the protective outer cover 4, which is used to realize the coordinated linkage action between the protective outer cover 4 and the limiting clamps 62.

[0038] The servo-controlled linear actuator 5 controls the lifting and lowering of the protective cover 4 in three stages:

[0039] The first stage: the protective cover 4 is lifted at a first speed to a safe height to separate from the casting mold 7, triggering the lifting mechanism 61 to push the casting mold 7 out of the rotating tank 11;

[0040] The second stage: switching to the second speed and continuing to lift to the preset linkage height, the coordinated transmission mechanism 63 drives the limit clamp seat 62 to rotate at a preset inclination angle, and pushes the casting mold 7 horizontally to the support frame 2;

[0041] The third stage: when the protective cover 4 is lowered, the closed-loop feedback of the servo-controlled linear actuator 5 is used to synchronously adjust the reset angle of the limit clamp seat 62 to ensure that the casting mold 7 is accurately returned to its original position.

[0042] After the casting process of the casting mold 7 is completed, the servo-controlled linear actuator 5 is first activated to extend, thereby driving the protective cover 4 upward and separating it from the top of the workpiece processing platform 1. At this point, the limit clamp 62 and the lifting mechanism 61 have not yet established a linkage relationship with the protective cover 4. After the protective cover 4 moves upward to a predetermined height, the protective cover 4 and the mold removal unit 6 are linked together under the connection of the coordinated transmission mechanism 63. The servo-controlled linear actuator 5 is further extended, driving the protective cover 4 further upward. Driven by the coordinated transmission mechanism 63, the mold removal unit 6 begins to move upward along with the protective cover 4. The upward movement of the lifting mechanism 61 brings its bottom into contact with the bottom of the casting mold 7, thereby driving the casting mold 7 upward. When the bottom of the casting mold 7 moves to the top surface of the workpiece processing platform 1, the servo-controlled linear actuator 5 continues to extend, and the coordinated transmission mechanism 63 begins to synchronously drive the limit clamp 62 to rotate toward the side of the support frame 2, thereby generating an outward thrust on the casting mold 7. When the servo-controlled linear actuator 5 is extended to the preset length, the limit clamp seat 62 just pushes the casting mold 7 onto the support frame 2. Afterwards, the staff will carry the casting mold 7 that has been cast to the cooling area and place another casting mold 7 on the support frame 2. By controlling the servo-controlled linear actuator 5 to contract, the mold disassembly part 6 begins to perform the reset operation, the lifting mechanism 61 moves downward, and the limit clamp seat 62 rotates and resets. When the entire mold disassembly part 6 is completely reset, there is still a certain amount of space between the protective cover 4 and the workpiece processing platform 1. The staff can push another casting mold 7 onto the mold disassembly part 6, and then continue the casting operation. At this point, the entire loading and unloading process of the casting mold 7 is completed. The loading and unloading action is completed synchronously during the lifting process of the protective cover 4, realizing the synchronous switching of the protective cover 4 and the loading and unloading mold usage status. On the one hand, the loading and unloading process is simplified, making it smoother and more efficient, thereby achieving the purpose of speeding up the loading and unloading speed of the casting mold 7 and meeting the production needs of large-scale casting; on the other hand, there is no need to set up an additional drive source to complete the unloading action of the casting mold 7 alone, which reduces energy consumption and reduces the cost of use.

[0043] Please refer to Figures 1 to 3The lifting mechanism 61 includes a pushing body 611 and a stabilizing plate 612 vertically fixed to the top of the base plate. A movable notch 613 is provided on both sides of the stabilizing plate 612. The inner side of the protective cover 4 is slidably connected to the movable notch 613 through a movable body 614 that cooperates with the movable notch 613. The length of the movable notch 613 is greater than the height of the casting mold 7. The sliding stroke of the movable body 614 is divided into a static phase of the lifting mechanism 61 and a linked rising phase. A limiting abutment 615 is fixedly installed on the top of the pushing body 611. The top of the limiting abutment 615 has an arc-shaped structure. When the casting mold 7 is lifted, its top contacts the bottom of the casting mold 7, providing support for the casting mold 7. After the casting mold 7 and the centrifugal mechanism are installed, the pushing body 611 and the limiting abutment 615 will not contact the bottom of the casting mold 7, thereby reducing friction on the casting mold 7 in a rotating state.

[0044] As the protective cover 4 moves upward to a preset height, the movable body 614 moves upward along with the protective cover 4 and slides along the movable notch 613, temporarily unaffected by the upward movement of the protective cover 4 and remaining stationary. When the movable body 614 slides to the upper end of the movable notch 613, the protective cover 4 continues to move upward. At this point, the stabilizing plate 612, driven by the movable body 614, begins to follow the upward movement, causing the pushing body 611 and the limiting abutment 615 to move upward together. The top of the limiting abutment 615 first contacts the bottom of the casting mold 7, subsequently driving the casting mold 7 upward. This design allows the protective cover 4 to first move upward to a preset height, which must be greater than the height of the casting mold 7, thereby providing sufficient space for the subsequent installation of the casting mold 7.

[0045] Please refer to Figure 1 、 Figure 3 and Figure 5 The limiting clamp 62 includes an arc-shaped rotating bracket 621 and several rolling wheels 622 uniformly and rotatably mounted on the rotating bracket 621. There are at least two rolling wheels 622. One rolling wheel 622 must be located at the central axis of the casting mold 7, while the remaining rolling wheels 622 must be located on the side of the semicircular portion of the casting mold 7 away from the support frame 2. The surface of the rolling wheels 622 is provided with anti-slip grooves, and their rotation axis is inclined at an angle of 15-30° to the radial direction of the casting mold 7. This inclination angle can increase the lateral thrust of the rolling wheels 622.

[0046] After the casting mold 7 is assembled with the rotary drive unit 3, two symmetrically arranged position-limiting clamps 62 clamp and position the two sides of the casting mold 7, respectively, maintaining a standard posture. Furthermore, during the rotation of the casting mold 7, the rolling contact between the rolling wheel 622 and the casting mold 7 effectively limits the rotating casting mold 7, ensuring stable rotation. When removing the casting mold 7, the rotation of the position-limiting clamps 62 pushes the casting mold 7 onto the support frame 2. Therefore, the position-limiting clamps 62 not only assist in positioning the casting mold 7 but, when used in conjunction with the cooperative transmission mechanism 63, also enable automatic removal of the casting mold 7.

[0047] Please refer to Figures 1 to 2 The cooperative transmission mechanism 63 includes a limiting rod 631, a mating gear 632, and two intermeshing bevel gears 633. The limiting rod 631 is fixedly mounted on one side of the workpiece processing platform 1, and its outer side forms a sliding connection with the protective cover 4. One of the bevel gears 633 is fixedly connected to the rotating end of the rotating bracket 621, and the other bevel gear 633 is rotatably mounted on the stabilizing plate 612. The mating gear 632 is connected to the bevel gear 633 located on the stabilizing plate 612 via a transmission shaft 634. The protective cover 4 is provided with an avoidance groove 636 that slidably engages with the transmission shaft 634. The upper end of the limiting rod 631 is provided with a meshing groove section 635 that is compatible with the mating gear 632. In addition, a torque sensor is provided between the bevel gear 633 and the transmission shaft 634 of the cooperative transmission mechanism 63. When the pushing resistance is detected to exceed the threshold, the PLC controller is triggered to pause the lifting action and issue an alarm.

[0048] During the process of the servo-controlled linear actuator 5 driving the protective cover 4 to move upward to the preset height, the protective cover 4 gradually moves upward along the outer side of the limit rod 631. Due to the avoidance groove 636 on the protective cover 4, the transmission shaft 634 will not be affected by the upward movement of the protective cover 4 temporarily and will not move upward with the protective cover 4. When the transmission shaft 634 contacts the bottom end of the avoidance groove 636, the protective cover 4 just moves up to the preset position of the first stage. Then the protective cover 4 continues to move upward, the transmission shaft 634 begins to move upward with the protective cover 4, and the mold disassembly part 6 also begins to move upward. After the protective cover 4 moves up to the preset position of the second stage, the mating gear 632 begins to engage with the meshing groove section 635. As the protective cover 4 continues to move upward, the mating gear 632 begins to rotate along the meshing groove section 635, and the transmission shaft 634 rotates along with the mating gear 632, driving the two bevel gears 633 to rotate synchronously, thereby causing the limit clamp seat 62 to start rotating and gradually push the casting mold 7 onto the support frame 2. When the protective cover 4 moves up to the third stage preset height, the limit clamp seat 62 just pushes the casting mold 7 onto the support frame 2. Afterwards, the servo-controlled linear actuator 5 contracts, driving the protective cover 4 to move downward to the first stage preset position. The limit clamp seat 62 first rotates and resets, and then the entire mold removal part 6 is reset to the inside of the workpiece processing platform 1. At this time, there is still enough space between the protective cover 4 and the workpiece processing platform 1, and the staff can then install another casting mold 7 into the workpiece processing platform 1 and connect it to the rotation drive unit 3. In this way, the cooperative transmission mechanism 63 realizes the linkage and coordinated action between the protective outer cover 4 and the mold disassembly part 6, and can automatically complete the removal operation of the casting mold 7. At the same time, the setting of the limiting rod body 631 can also play a sliding limit role for the lifting and lowering protective outer cover 4, ensuring that the protective outer cover 4 is lifted and lowered stably.

[0049] Please refer to Figures 6 and 7 The rotary drive unit 3 includes a drive motor 31 and a rotating rod 32 rotatably mounted on the workpiece processing platform 1. A hexagonal docking port is located at the center of the bottom of the casting mold 7, mates with the top of the rotating rod 32, enabling quick docking between the two. The drive motor 31 and the rotating rod 32 are connected by a transmission pulley assembly 33, which consists of two pulleys of different diameters connected by a transmission belt.

[0050] When driving the casting mold 7 to rotate, the driving motor 31 is started to rotate, thereby causing the transmission wheel set 33 to rotate synchronously, and finally causing the rotating rod 32 to drive the casting mold 7 to rotate together.

[0051] Example 2

[0052] As another embodiment of the present invention, a grinding ball casting method applicable to the above-mentioned centrifugal casting device is also provided, and the specific steps are as follows:

[0053] S1. Initialize control parameters: Set the lifting speed parameters of the protective cover 4, including the first speed V15-10mm / s, the second speed V2 2-5mm / s, the safety height H1200-300mm, and the linkage height H2400-500mm;

[0054] S2. Lift the protective cover 4 in stages:

[0055] Phase 1: The protective cover 4 is lifted at a constant speed of V1 by the servo-controlled linear actuator 5. The height feedback from the displacement sensor is monitored in real time. When the height reaches H1, the lifting mechanism 61 is triggered to lift the casting mold 7 out of the rotating tank 11.

[0056] The setting basis of H1 is the minimum safety distance required for the mold to leave the rotating tank 11. For example, a distance 200 mm lower may cause a collision risk.

[0057] Phase 2: Switch to V2 and continue to lift the protective cover 4. When the height reaches H2, the bevel gear 633 engages with the meshing groove segment 635, driving the limit clamp seat 62 to rotate at an angle of 15-30 degrees. At the same time, a 0.5-2 second delay is introduced to ensure that the trajectory of the casting mold 7 being pushed horizontally to the support frame 2 is synchronized with the rotation of the limit clamp seat 62.

[0058] When the protective cover 4 descends and resets, the PLC controller adjusts the descent speed in real time based on the displacement sensor data, switching to V1 speed within a range of 10-20 mm from the initial position to avoid mechanical impact. Before the limit clamp 62 rotates to push the casting mold 7, the PLC controller performs a secondary check on the lifting height of the casting mold 7. If the height deviation exceeds ±0.1 mm, the automatic compensation program is triggered.

[0059] S3. Abnormal detection and processing: In step S2, if the torque sensor detects that the pushing resistance exceeds the threshold of 50-100 N / m, the PLC controller is triggered to suspend the lifting action and alarm;

[0060] S4. Mold replacement and reset: After replacing the new casting mold 7, the servo-controlled linear actuator 5 is controlled to lower the protective cover 4 at a speed of V2, and the reset path is dynamically calibrated through closed-loop feedback to control the return angle error of the limit clamp seat 62 within ±0.5°. Among them, the implementation method of closed-loop feedback can be described as a PID control algorithm.

[0061] The above describes the embodiments of the present invention, but the present invention is not limited to the above specific implementation methods. The above specific implementation methods are merely illustrative and not restrictive. Ordinary technicians in this field can also make many forms under the guidance of the present invention, all of which are protected by the present invention.

Claims

1. A grinding ball casting device, characterized in that: include: A workpiece processing platform (1) having a rotating trough (11) on its top; A support frame (2) is fixed to one side of the workpiece processing platform (1), and the top thereof is flush with the workpiece processing platform (1); A rotary drive unit (3) is provided below the workpiece processing platform (1), and its drive end is detachably connected to the bottom of the casting mold (7) via a hexagonal docking interface; A protective cover (4) covering the top of the workpiece processing platform (1); At least two servo-controlled linear actuators (5) are symmetrically arranged on both sides of the workpiece processing platform (1), the telescopic ends of which are connected to the protective cover (4), and the built-in displacement sensors provide real-time feedback of the lifting height; The mold disassembly portion (6) comprises two lifting mechanisms (61) symmetrically slidably arranged on the inner side of the protective outer cover (4), a limiting clamp seat (62) arranged at the bottom of the lifting mechanism (61), and a cooperative transmission mechanism (63) connecting the limiting clamp seat (62) and the protective outer cover (4); The servo-controlled linear actuator (5) controls the lifting and lowering of the protective cover (4) in three stages: The first stage: the protective cover (4) is lifted at a first speed V1 to a safe height H1 for separation from the casting mold (7), and the lifting mechanism (61) is triggered to push the casting mold (7) out of the rotating groove (11); The second stage: switching to the second speed V2 and continuing to lift to the preset linkage height H2, the coordinated transmission mechanism (63) drives the limit clamp seat (62) to rotate at a preset inclination angle, and pushes the casting mold (7) horizontally to the support frame (2); The third stage: when the protective cover (4) is lowered, the closed-loop feedback of the servo-controlled linear actuator (5) is used to synchronously adjust the reset angle of the limit clamp seat (62) to ensure that the casting mold (7) is accurately reset.

2. A grinding ball casting device according to claim 1, characterized in that: The lifting mechanism (61) includes a pushing body (611) and a vertically fixed stabilizing plate (612), movable notches (613) are provided on both sides of the stabilizing plate (612), the inner side of the protective outer cover (4) is slidably connected to the movable notches (613) via a movable body (614), and an arc-shaped limiting abutment body (615) is provided on the top of the pushing body (611).

3. A grinding ball casting device according to claim 2, characterized in that: The limiting clamp seat (62) comprises an arc-shaped rotating bracket (621) and at least two rolling wheels (622). The rotating axis of the rolling wheel (622) is inclined at an angle of 15-30° to the radial direction of the casting mold (7), and the surface is provided with anti-slip patterns.

4. A grinding ball casting device according to claim 3, characterized in that: The cooperative transmission mechanism (63) comprises a limiting rod (631) fixed to the workpiece processing platform (1), a matching gear (632), and two mutually meshing bevel gears (633), wherein one of the bevel gears (633) is connected to the rotating bracket (621), and the other bevel gear (633) is connected to the matching gear (632) via a transmission shaft (634); the protective cover (4) is provided with an avoidance groove (636); and the upper end of the limiting rod (631) is provided with a meshing groove section (635) meshing with the matching gear (632).

5. The grinding ball casting device according to claim 1, characterized in that: The rotary drive unit (3) comprises a driving motor (31), a rotating rod (32) and a transmission wheel set (33), and the top end of the rotating rod (32) is adapted to the hexagonal docking interface at the bottom of the casting mold (7).

6. A grinding ball casting device according to claim 3, characterized in that: At least one of the rolling wheel bodies (622) is located at the central axis of the casting mold (7), and the rest are located on the semicircular side of the casting mold (7) away from the support frame (2).

7. The grinding ball casting device according to claim 1, characterized in that: The servo-controlled linear actuator (5) is in communication with the PLC controller and dynamically adjusts the lifting speed according to the feedback data of the displacement sensor.

8. The grinding ball casting device according to claim 4, characterized in that: A torque sensor is provided between the bevel gear (633) and the transmission shaft (634) of the cooperative transmission mechanism (63). When it is detected that the pushing resistance exceeds a threshold value, the PLC controller is triggered to suspend the lifting action and issue an alarm.

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