Grinding wheel mold with uniform distribution structure

Abstract

The application belongs to the technical field of grinding wheel manufacturing, and particularly discloses a grinding wheel mold with a uniform distribution structure, which comprises a workbench, the upper end of the workbench is provided in a hollow shape, a rotating disc is rotationally connected to the upper end of the workbench, a lower mold body is connected to the upper end of the rotating disc, a boss is connected to the lower end of the inner wall of the lower mold body, the outer wall of the boss and the inner wall of the lower mold body form a forming chamber, a moving mechanism is connected to one side of the workbench, and a uniform distribution mechanism is connected below the moving mechanism. Through the cooperative action of the pre-leveling plug rod, the dynamic upward movement of the scraper, the airflow auxiliary mechanism and the side scraping mechanism, the uniform distribution of the abrasive layer is realized, and the density uniformity and production efficiency of the grinding wheel forming are significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of grinding wheel manufacturing, and specifically discloses a grinding wheel mold with a smoothing structure. Background Technology

[0002] Grinding wheels are typically ring-shaped hollow structures. Their forming process involves mixing abrasive materials (such as brown fused alumina, silicon carbide, diamond, etc.) with a binder, filling the mold cavity, and then pressing and curing to create the finished product. Grinding wheel molds generally include a lower mold, a mold sleeve, and a central boss. A ring-shaped cavity is formed between the lower mold and the central boss, and the shape of this ring-shaped cavity matches the shape of the working layer of the grinding wheel. During feeding, the operator pours the mixed abrasive into the mold, and then presses it to compact the abrasive within the cavity. Because grinding wheels have extremely high requirements for dynamic balance and grinding uniformity, the abrasive in the mold must be distributed as evenly as possible before pressing; otherwise, it will lead to uneven density and hardness deviations in the grinding wheel, thus affecting its performance and even causing cracking.

[0003] In current production, the abrasive is often manually poured directly into the lower mold, naturally accumulating into a hill-like shape with a higher center and lower edges. At the same time, dead zones easily form at the junction of the boss root and the bottom of the cavity, as well as at the outer edge of the mold. To improve the uniformity of material distribution, some grinding wheel molds are equipped with a leveling mechanism (such as a rotating scraper) to spread the abrasive. However, most existing leveling mechanisms only use a single flat scraper, which roughly levels the abrasive through the relative rotation of the scraper and the mold. In actual use, this simple scraper has obvious defects: first, abrasive continuously accumulates on the front side of the scraper, creating a pushing phenomenon, making it difficult to completely level the material layer in a short time; second, dead zones such as the boss root and the outer edge are often not effectively reached due to the shape of the scraper, resulting in residual material in some areas. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a grinding wheel mold with a smoothing structure.

[0005] To achieve the above objectives, the present invention provides a grinding wheel mold with a smoothing structure, including a worktable, the upper end of which is hollow, a turntable rotatably connected to the upper end of the worktable, a lower mold body connected to the upper end of the turntable, a boss connected to the lower end of the inner wall of the lower mold body, the outer wall of the boss and the inner wall of the lower mold body forming a molding cavity, a moving mechanism connected to one side of the worktable, and a smoothing mechanism connected below the moving mechanism;

[0006] The leveling mechanism includes a crossbar, a pretreatment mechanism connected to the middle of the upper end of the crossbar, a smoothing mechanism connected to one side of the upper end of the crossbar, a scraper including a scraper, side scraping mechanisms connected to both sides of the scraper, the lower part of one side of the scraper being inclined, a cavity being opened inside the scraper, and an airflow assist mechanism connected to the middle of the upper end of the scraper.

[0007] The airflow assist mechanism includes an air distribution pipe, the lower end of which extends into the cavity. The lower end of the air distribution pipe is connected to air supply pipes on both sides. There are three air supply pipes. The lower ends of the three air supply pipes are connected to nozzles. The lower part of the outer wall of the three air supply pipes is connected to an air supply valve. Two of the nozzles are connected to a first jet head on one side, and the other nozzle is connected to a second jet head on both sides. A photoelectric sensor is connected to one side of the scraper corresponding to the three nozzles.

[0008] Preferably, the moving mechanism includes two L-shaped plates. One side of each L-shaped plate is connected to one side of the worktable. A top plate is connected to the upper end of each L-shaped plate. Telescopic cylinders are connected to both sides of the upper end of the top plate. The lower ends of the two telescopic cylinders extend through to below the top plate. An electrically controlled slide rail is connected to the output end of each telescopic cylinder. A slider is slidably connected below the two electrically controlled slide rails. The lower ends of the two sliders are respectively connected to the upper sides of the crossbar.

[0009] Preferably, the pretreatment mechanism includes a first electric telescopic rod, the output end of which is connected to a movable plate. The movable plate has an inverted U-shaped structure, and connecting rods are connected to both sides of the movable plate. Insert rods are evenly connected to the lower ends of the two connecting rods, and multiple insert rods are used to pre-extend into the molding cavity to agitate it.

[0010] Preferably, the upper end of the crossbar is connected to a second electric telescopic rod above the scraper, and the output ends of the two second electric telescopic rods extend through to the lower part of the crossbar and are connected to the upper sides of the scraper. The lower end of the crossbar is connected to a support platform, and the lower end of the support platform contacts the upper end of the protrusion. The lower end of the support platform is embedded with ball bearings.

[0011] The second electric telescopic rod can independently adjust the descent height of the scraper to adapt to grinding wheel molds of different thicknesses, improving the versatility of the equipment; the support platform and the boss roll in contact, providing auxiliary support for the crossbar without affecting the rotation of the mold, thus ensuring the stability of the scraper's operation.

[0012] Preferably, the upper end of the air distribution pipe is connected to an air intake pipe, the upper end of the air intake pipe extends through to the upper end of the crossbar, and the crossbar has an installation hole corresponding to the air intake pipe, and the upper end of the air intake pipe is installed into the installation hole.

[0013] Preferably, the two first jet heads are symmetrically arranged, with the nozzle of the first jet head near the boss corresponding to the inner wall of the lower mold body, and the nozzle of the first jet head near the inner wall of the lower mold body corresponding to the boss. The two second jet heads are both inclined, and the two first jet heads and the two second jet heads extend through to one side of the scraper.

[0014] The first jet nozzles are directed towards the root of the boss and the outer edge, respectively, which can specifically clean these two most difficult-to-scrape dead corner areas; the second jet nozzle is set at an angle and sprays a dispersed airflow in front of the scraper to blow away the accumulated material in front of the scraper in advance, so as to achieve efficient and uniform material distribution in conjunction with the scraper.

[0015] Preferably, there are two sets of side scraping mechanisms, which are distributed on both sides of the scraper. Each side scraping mechanism includes a frame, which is L-shaped. One side of the frame is connected to one side of the scraper. A rotating block is connected to one side of the inner wall of the frame. A rotating rod is rotatably connected to the lower end of the rotating block. The lower end of the rotating rod extends through to the bottom of the frame. A side plate is connected to the lower end of the rotating rod. One side of the side plate of each of the two side scraping mechanisms contacts one side of the outer wall of the boss and one side of the inner wall of the lower mold body, respectively. One side of the side plate is made of a flexible material.

[0016] The side plates fit the side wall of the boss and the inner wall of the lower mold respectively, and clean up the corner residues simultaneously when the scraper moves, making up for the blind spots that the main scraper cannot reach; the flexible material can reduce scratches on the mold side wall while maintaining good fit.

[0017] Preferably, a swing block is connected to the middle of the outer wall of the rotating rod, and a sliding rod is connected to one side of the inner wall of the frame. The sliding rod has an arc-shaped structure. A sliding hole is opened on the swing block corresponding to the sliding rod. The sliding rod slides inside the sliding hole. The swing block is sleeved on the sliding rod and can slide along the sliding rod. One end of the sliding rod is T-shaped. A buffer spring is sleeved on the outer wall of the sliding rod. One end of the buffer spring contacts the T-shaped structure at one end of the sliding rod, and the other end of the buffer spring contacts one side of the swing block. A connecting magnetic block is connected to one side of the swing block, and a conductive magnetic block is connected to one side of the inner wall of the frame corresponding to the connecting magnetic block.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] Through the coordinated action of the inclined surface of the scraper and the airflow auxiliary mechanism, the efficient and uniform spreading of the abrasive layer is achieved. During the scraping process, the second electric telescopic rod slowly drives the scraper to move upward according to a preset program, so that the gap between the bottom surface of the scraper and the bottom surface of the mold dynamically matches the change of the abrasive layer from thick to thin, avoiding scraper jamming or excessive compaction of the material layer. At the same time, the airflow auxiliary mechanism adopts a continuous pressure-maintaining air supply method, and the air supply valve maintains a very small opening during the non-scraping stage, so that a small amount of gas always escapes from the jet head to form a micro-positive pressure air curtain, avoiding the problem of abrasive dust backflow clogging the nozzle. Three photoelectric sensors detect the abrasive accumulation status in each area in front of the scraper in real time. The control system automatically fine-tunes the opening of the corresponding air supply valve according to the detection signal, so that the first jet head sprays a gentle airflow towards the root of the boss and the outer edge corner, and the second jet head sprays a gentle airflow towards the front of the scraper movement, thereby gently blowing away the accumulated material in front of the scraper, achieving uniform material distribution and significantly improving the density uniformity of the grinding wheel forming.

[0020] The side scraping mechanism enables reliable cleaning of the mold sidewalls and root corners. When the electromagnetic block is de-energized, the side plate in the side scraping mechanism automatically opens outwards by the elastic force of the buffer spring, closely fitting the outer wall of the boss and the inner wall of the lower mold body. During the scraping process, the accumulated material attached to the corner is simultaneously scraped out and pushed into the working area of ​​the main scraper. Before the scraper extends, the electromagnetic block is energized to make the side plate retract inwards, effectively avoiding interference and collision during the descent process. The side plate is made of flexible material and can swing elastically with the rotating rod to prevent rigid jamming or scratching of the mold, thus improving the corner cleaning effect and extending the service life of the mold. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention;

[0022] Figure 2 This is a schematic diagram of the installation structure of the pretreatment mechanism of the present invention;

[0023] Figure 3 This is an overall cross-sectional view of the device of the present invention;

[0024] Figure 4 This is a schematic diagram of the connection structure between the pretreatment and equalization mechanism on the crossbar of the present invention;

[0025] Figure 5 This is a schematic diagram of the installation structure of the three nozzles, the first jet head, and the second jet head of the present invention;

[0026] Figure 6 This is a schematic diagram of the overall structure of the side scraping mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the mounting structure of the two side plates of the present invention;

[0028] Figure 8 This is a schematic diagram of the internal structure of the frame of the present invention;

[0029] Figure 9 For the present invention Figure 8 A magnified structural diagram of A in the diagram.

[0030] In the diagram: 1. Workbench; 2. Turntable; 3. Lower mold body; 4. Boss; 5. L-shaped plate; 6. Top plate; 7. Telescopic cylinder; 8. Electrically controlled slide rail; 9. Slider; 10. Crossbar; 11. First electric telescopic rod; 12. Moving plate; 13. Connecting rod; 14. Insert rod; 15. Support platform; 16. Second electric telescopic rod; 17. Scraper; 18. Air distribution pipe; 19. Air inlet pipe; 20. Air delivery pipe; 21. Nozzle; 22. Air delivery valve; 23. First jet nozzle; 24. Second jet nozzle; 25. Photoelectric sensor; 26. Frame; 27. Rotating block; 28. Rotating rod; 29. ​​Side plate; 30. Swing block; 31. Slide rod; 32. Buffer spring; 33. Connecting magnet; 34. Electromagnetic block. Detailed Implementation

[0031] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the invention is not limited to the specific embodiments disclosed below.

[0033] like Figures 1-9 The grinding wheel mold with a smoothing structure shown includes a worktable 1. The upper end of the worktable 1 is hollow. A turntable 2 is rotatably connected to the upper end of the worktable 1. A lower mold body 3 is connected to the upper end of the turntable 2. A boss 4 is connected to the lower end of the inner wall of the lower mold body 3. The outer wall of the boss 4 and the inner wall of the lower mold body 3 form a molding cavity. A moving mechanism is connected to one side of the worktable 1. A smoothing mechanism is connected below the moving mechanism.

[0034] The upper end of the worktable 1 is circumferentially embedded with four rollers. One side of each roller contacts one side of the outer wall of the turntable 2. The worktable 1 is circumferentially connected to the outer wall of the lower mold body 3. One end of each of the multiple limit rods is rotatably connected to a pressing wheel. One side of each pressing wheel contacts the outer wall of the lower mold body 3. The lower end of the turntable 2 is connected to a drive motor. The drive motor drives the turntable 2 and the lower mold body 3 to rotate. The rollers and pressing wheels improve the stability of the turntable 2 and the lower mold body 3 when they rotate.

[0035] The leveling mechanism includes a crossbar 10, a pretreatment mechanism is connected to the middle of the upper end of the crossbar 10, a smoothing mechanism is connected to one side of the upper end of the crossbar 10, the smoothing mechanism includes a scraper 17, a side scraping mechanism is connected to both sides of the scraper 17, the lower part of one side of the scraper 17 is inclined, a cavity is opened inside the scraper 17, and an airflow auxiliary mechanism is connected to the middle of the upper end of the scraper 17.

[0036] The airflow assist mechanism includes an air distribution pipe 18, the lower end of which extends into the cavity. The lower end of the air distribution pipe 18 is connected to two sides of the air supply pipe 20. There are three air supply pipes 20. The lower ends of the three air supply pipes 20 are connected to nozzles 21. The lower part of the outer wall of the three air supply pipes 20 is connected to an air supply valve 22. Two nozzles 21 are connected to a first jet head 23 on one side, and the other nozzle 21 is connected to a second jet head 24 on both sides. The two second jet heads 24 spray a gentle airflow to both sides of the scraper 17 in the direction of movement, so as to evenly disperse the abrasive material accumulated in front to the left and right sides, further improving the leveling efficiency. A photoelectric sensor 25 is connected to one side of the scraper 17 corresponding to the three nozzles 21. Along the rotation direction of the lower mold body 3, the photoelectric sensor 25 is located in front of the jet head.

[0037] The turntable 2 at the top of the worktable 1 drives the lower mold body 3 and the boss 4 to rotate. The moving mechanism moves the leveling mechanism to the top of the molding chamber. The pre-treatment mechanism first pre-disperses the accumulated abrasive, and then the smoothing mechanism descends. The scraper 17 uses its lower inclined surface to spread the abrasive. At the same time, the side scraping mechanism cleans the root of the boss 4 and the inner corner of the lower mold body 3. The airflow auxiliary mechanism distributes compressed air to three air supply pipes 20 through the air distribution pipe 18. The air supply valve 22 controls the opening and closing. The two first jet nozzles 23 spray air towards the root of the boss 4 and the outer edge of the ring, respectively. The second jet nozzle 24 sprays air towards the front of the scraper 17 to disperse the accumulated material. The photoelectric sensor 25 detects the thickness of the abrasive in front of the scraper 17 in real time. When the accumulated material exceeds the set threshold, the control system automatically increases the opening of the air supply valve 22 to enhance the spray.

[0038] like Figure 1 As shown: The moving mechanism includes two L-shaped plates 5. One side of each L-shaped plate 5 is connected to one side of the worktable 1. The upper ends of the two L-shaped plates 5 are connected to a top plate 6. Both sides of the upper end of the top plate 6 are connected to telescopic cylinders 7. The lower ends of the two telescopic cylinders 7 extend through to the bottom of the top plate 6. The output ends of the two telescopic cylinders 7 are connected to electrically controlled slide rails 8. The lower ends of the two electrically controlled slide rails 8 are slidably connected to sliders 9. The lower ends of the two sliders 9 are respectively connected to the upper ends of the crossbar 10 on both sides.

[0039] like Figures 2-4As shown: The pretreatment mechanism includes a first electric telescopic rod 11, and a movable plate 12 is connected to the output end of the first electric telescopic rod 11. The movable plate 12 is in the shape of an inverted U-shape. Connecting rods 13 are connected to both sides of the movable plate 12. Insert rods 14 are evenly connected to the lower ends of the two connecting rods 13. Multiple insert rods 14 are used to pre-extend into the molding cavity to disturb it.

[0040] After the material is fed, the output end of the first electric telescopic rod 11 pushes the moving plate 12 to move downward, and the connecting rods 13 on both sides drive multiple insert rods 14 to descend synchronously. The insert rods 14 extend into the abrasive pile in the molding cavity. At this time, the lower mold body 3 rotates, and the insert rods 14 make a circular motion relative to the abrasive, which disperses the abrasive piled up on the top of the central boss 4 into a hill shape and pushes it to the surroundings to achieve pre-leveling.

[0041] like Figures 3-4 As shown: The upper end of the crossbar 10 is connected to the scraper 17 above the scraper 17. The output ends of the two second electric telescopic rods 16 extend through to the lower part of the crossbar 10 and are connected to the upper sides of the scraper 17. The lower end of the crossbar 10 is connected to the support platform 15. The lower end of the support platform 15 contacts the upper end of the boss 4. The lower end of the support platform 15 is embedded with ball bearings.

[0042] Two second electric telescopic rods 16 can adjust the descent height of the scraper 17, thereby changing the gap between the bottom surface of the scraper 17 and the bottom surface of the forming chamber. When it is necessary to scrape the abrasive layer of different thicknesses, the extension length of the telescopic rod can be set by the controller. At the same time, when the equalization mechanism descends, the ball bearings at the bottom of the support platform 15 fixed at the lower end of the crossbar 10 roll into contact with the upper end surface of the boss 4, providing auxiliary support for the crossbar 10 and preventing the crossbar 10 from bending and deforming due to excessive cantilever length, thus ensuring the stability of the scraper 17 during operation.

[0043] like Figure 5 As shown: The upper end of the air distribution pipe 18 is connected to the air inlet pipe 19. The lower part of the air inlet pipe 19 is a flexible hose. The upper end of the air inlet pipe 19 extends through to the upper end of the crossbar 10. The crossbar 10 has an installation hole corresponding to the air inlet pipe 19. The upper end of the air inlet pipe 19 is installed into the installation hole.

[0044] The upper end of the intake pipe 19 is connected to an external compressed air source through a connector to introduce clean and dry compressed air. The compressed air enters the air distribution pipe 18 through the intake pipe 19 and is then distributed to the three air delivery pipes 20. The intake pipe 19 is arranged inside the crossbar 10 to avoid the exposed pipes from getting tangled or pulled when the equalizing mechanism is raised, lowered or moved.

[0045] like Figure 5As shown: Two first jet heads 23 are symmetrically arranged. The nozzle of the first jet head 23 near the boss 4 corresponds to the inner wall of the lower mold body 3. The nozzle of the first jet head 23 near the inner wall of the lower mold body 3 corresponds to the boss 4. Two second jet heads 24 are both inclined. Both the two first jet heads 23 and the two second jet heads 24 extend through to one side of the scraper 17.

[0046] Both second jet nozzles 24 are inclined in the direction of movement of the scraper 17, and the nozzles are designed as flat fan shapes to output a wide and gentle airflow. This airflow auxiliary mechanism maintains air supply during the power-on operation of the equipment, that is, it adopts a pressure-maintaining continuous air supply mode. External clean compressed air enters the air inlet pipe 19 and is then distributed to the three air delivery pipes 20 through the air distribution pipe 18. The air delivery valve 22 also maintains a very small opening during standby or non-scraping stages to ensure that a small amount of gas always escapes from the first jet nozzle 23 and the second jet nozzle 24, forming a micro-positive pressure air curtain to prevent abrasive dust from entering the nozzle and causing blockage due to negative pressure or diffusion. When the scraper 17 descends and performs material distribution, the control system appropriately increases the opening of the air delivery valve 22 to produce a gentle airflow.

[0047] The airflow from the second jet nozzle 24 gently disperses the accumulated abrasive material in front of the scraper 17, spreading it evenly and preventing the formation of rolling material piles in front of the scraper 17. The airflow from the first jet nozzle 23 continuously blows towards the root of the boss 4 and the inner corner of the lower mold body 3, working in conjunction with the side scraping mechanism to remove residual material. Since the airflow is always present and the speed is slow, it will not cause dust to fly.

[0048] like Figures 6-9 As shown: There are two sets of side scraping mechanisms, which are distributed on both sides of the scraper 17. The side scraping mechanism includes a frame 26, which is L-shaped. One side of the frame 26 is connected to one side of the scraper 17. A rotating block 27 is connected to one side of the inner wall of the frame 26. A rotating rod 28 is rotatably connected to the lower end of the rotating block 27. The lower end of the rotating rod 28 extends through to the bottom of the frame 26. The lower end of the rotating rod 28 is connected to a side plate 29. One side of the side plate 29 of the two side scraping mechanisms is in contact with one side of the outer wall of the boss 4 and one side of the inner wall of the lower mold body 3, respectively. One side of the side plate 29 is made of flexible material.

[0049] Two sets of side scraping mechanisms are fixed to one end of the scraper 17 facing the boss 4 and the other end facing the outer wall of the lower mold, respectively. The rotating rod 28 is connected to the frame 26 through the rotating block 27, so that the rotating rod 28 can swing around the vertical axis in a small range. The side plate 29 keeps in contact with the outer wall of the boss 4 or the inner wall of the lower mold body 3. The lower end of the side plate 29 is inclined, matching the shape of the lower part of one side of the scraper 17. When the lower mold body 3 rotates, the side plate 29 slides against the side wall of the lower mold body 3, scraping off the abrasive adhering to the side wall, and scraping out the accumulated material at the outer wall of the boss 4. Since the side plate 29 is flexible and can swing with the rotating rod 28, it avoids rigid jamming or scratching the mold. The side scraping mechanism can be responsible for cleaning the vertical surfaces and root corners that the scraper 17 cannot reach.

[0050] A swing block 30 is connected to the middle of the outer wall of the rotating rod 28, and a sliding rod 31 is connected to one side of the inner wall of the frame 26. The sliding rod 31 has an arc-shaped structure. A sliding hole is opened at the position of the swing block 30 corresponding to the sliding rod 31. The sliding rod 31 slides inside the sliding hole. The swing block 30 is sleeved on the sliding rod 31 and can extend along the sliding rod 31. One end of the sliding rod 31 is set with a T-shaped structure. A buffer spring 32 is sleeved on the outer wall of the sliding rod 31. One end of the buffer spring 32 contacts the T-shaped structure at one end of the sliding rod 31, and the other end of the buffer spring 32 contacts one side of the swing block 30. A connecting magnetic block 33 is connected to one side of the swing block 30, and a conductive magnetic block 34 is connected to one side of the inner wall of the frame 26 corresponding to the connecting magnetic block 33.

[0051] The elastic force of the buffer spring 32 provides the floating contact force of the side plate 29, so that it can both make close contact with the mold side wall and retract when encountering greater resistance to avoid damage. In addition, the connecting magnetic block 33 and the conductive electromagnetic block 34 constitute a positioning device. When the side plate 29 is not in the working state, the conductive electromagnetic block 34 is energized to generate electromagnetic force to attract the connecting magnetic block 33, thereby locking the swing block 30 and the rotating rod 28, so that the side plate 29 is in a rigid state.

[0052] It should be noted that the specific circuit connections and control methods of the drive motor, first electric telescopic rod 11, second electric telescopic rod 16, electrically controlled slide rail 8, photoelectric sensor 25, gas valve 22, and connecting magnetic block 33 and electromagnetic block 34 involved in the embodiments of the present invention, including valve opening adjustment, timing control, continuous pressure holding control, and electromagnetic block on / off control, are all conventional technical means in the field and belong to the scope of prior art. Those skilled in the art can select appropriate commercially available models and perform conventional circuit design or programming control according to actual needs; their specific working principles will not be elaborated here.

[0053] Working principle: The operator pours the mixed abrasive into the annular forming cavity formed between the lower mold body 3 and the boss 4. The abrasive first falls into the forming cavity and naturally accumulates into a hill shape with a high center and low edges, and forms a local dense accumulation at the root of the boss 4 and the outer edge.

[0054] The moving mechanism moves the leveling mechanism above the molding chamber. The first electric telescopic rod 11 drives the insertion rod 14 to descend and insert into the abrasive pile. The turntable 2 drives the lower mold body 3 to rotate. The insertion rod 14 makes a circular motion relative to the abrasive, breaking up the accumulated material on the top of the boss 4 and initially pushing it to the surrounding area to complete the pre-leveling. After the pre-treatment is completed, the insertion rod 14 rises and exits.

[0055] Before the scraper 17 descends, the control system energizes the guide solenoid block 34. The guide solenoid block 34 generates electromagnetic force to attract the connecting magnetic block 33, causing the side plates 29 on both sides to overcome the elastic force of the buffer spring 32 and retract inward, moving away from the mold side wall by a certain distance, thus avoiding interference when the scraper 17 descends.

[0056] The second electric telescopic rod 16 drives the scraper 17 to descend to the working position. The bottom surface of the scraper 17 maintains a set gap with the bottom surface of the molding chamber. After the scraper 17 is in place, the electromagnetic block 34 is de-energized, the electromagnetic force disappears, and the buffer spring 32 pushes the side plate 29 to open outward until it tightly fits the outer wall of the boss 4 and the inner wall of the lower mold body 3 respectively, relying on the spring force to maintain flexible contact.

[0057] Turntable 2 drives the lower mold body 3 to rotate. The abrasive is gradually scraped flat as the mold rotates and passes under the stationary scraper 17. During this process, the inclined surface of the lower part of the scraper 17 scoops up the abrasive and guides it to spread to both sides. At the same time, the second electric telescopic rod 16 slowly drives the scraper 17 to move upward, so that the gap between the bottom surface of the scraper 17 and the bottom surface of the mold gradually increases to match the dynamic change of the abrasive layer from thick to thin, and to prevent the scraper 17 from getting stuck or the material layer from being over-compacted due to the initial gap being too small.

[0058] Three photoelectric sensors 25 correspond to the working areas of the three jet nozzles, respectively, to detect the accumulation state of the abrasive material in front in real time. When the thickness of the accumulated material in a local area exceeds a set threshold, the control system automatically fine-tunes the opening of the corresponding air supply valve 22 based on the signal from the photoelectric sensors 25, increasing the airflow intensity in that area. Specifically, the first jet nozzle 23 continuously sprays a gentle airflow towards the root of the boss 4 and the outer corner, while the second jet nozzle 24 sprays a gentle airflow towards the front of the scraper 17, assisting in dispersing the accumulated material and cleaning dead corners. During non-scraping stages, the air supply valve 22 maintains a very small opening, ensuring that a small amount of gas always escapes from the jet nozzle to form a micro-positive pressure air curtain, preventing abrasive dust from backflowing and clogging the nozzles.

[0059] The side plates 29 on both sides slide against the mold sidewall under the action of spring force, scraping out the accumulated material at the base of the boss 4 and the outer edge of the ring, and pushing it into the working area of ​​the main scraper 17.

[0060] After the fabric is laid, the second electric telescopic rod 16 quickly lifts the scraper 17, the electromagnetic block 34 is energized again, the side plate 29 retracts and resets, and the moving mechanism lifts and moves the equalizing mechanism as a whole, waiting for the next cycle.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A grinding wheel mold with a grinding structure, comprising a worktable (1), characterized in that, The upper end of the worktable (1) is hollow. A turntable (2) is rotatably connected to the upper end of the worktable (1). A lower mold body (3) is connected to the upper end of the turntable (2). A boss (4) is connected to the lower end of the inner wall of the lower mold body (3). The outer wall of the boss (4) and the inner wall of the lower mold body (3) form a molding cavity. A moving mechanism is connected to one side of the worktable (1). A leveling mechanism is connected below the moving mechanism. The leveling mechanism includes a crossbar (10), a pretreatment mechanism is connected to the middle of the upper end of the crossbar (10), a smoothing mechanism is connected to one side of the upper end of the crossbar (10), the smoothing mechanism includes a scraper (17), a side scraping mechanism is connected to both sides of the scraper (17), the lower part of one side of the scraper (17) is inclined, a cavity is opened inside the scraper (17), and an airflow auxiliary mechanism is connected to the middle of the upper end of the scraper (17). The airflow assist mechanism includes a gas distribution pipe (18), the lower end of which extends into the cavity. The lower end of the gas distribution pipe (18) is connected to two sides of the gas supply pipe (20). There are three gas supply pipes (20). The lower ends of the three gas supply pipes (20) are connected to nozzles (21). The lower part of the outer wall of the three gas supply pipes (20) is connected to a gas supply valve (22). Two nozzles (21) are connected to a first jet head (23) on one side, and the other nozzle (21) is connected to a second jet head (24) on both sides. A photoelectric sensor (25) is connected to one side of the scraper (17) corresponding to the three nozzles (21).

2. The grinding wheel mold with a smoothing structure according to claim 1, characterized in that, The moving mechanism includes two L-shaped plates (5). One side of each L-shaped plate (5) is connected to one side of the workbench (1). The upper ends of the two L-shaped plates (5) are connected to a top plate (6). Both sides of the upper end of the top plate (6) are connected to telescopic cylinders (7). The lower ends of the two telescopic cylinders (7) extend through to the bottom of the top plate (6). The output ends of the two telescopic cylinders (7) are connected to electrically controlled slide rails (8). Slider blocks (9) are slidably connected below the two electrically controlled slide rails (8). The lower ends of the two sliders (9) are respectively connected to the upper sides of the crossbar (10).

3. A grinding wheel mold with a smoothing structure according to claim 1, characterized in that, The pretreatment mechanism includes a first electric telescopic rod (11), the output end of which is connected to a moving plate (12). The moving plate (12) is in the shape of an inverted U-shape. Both sides of the moving plate (12) are connected to connecting rods (13). The lower ends of the two connecting rods (13) are evenly connected to insert rods (14). The multiple insert rods (14) are used to pre-extend into the molding cavity to disturb it.

4. A grinding wheel mold with a smoothing structure according to claim 1, characterized in that, The upper end of the crossbar (10) is connected to a second electric telescopic rod (16) above the scraper (17). The output ends of the two second electric telescopic rods (16) extend through to the lower part of the crossbar (10) and are connected to the upper sides of the scraper (17). The lower end of the crossbar (10) is connected to a support platform (15). The lower end of the support platform (15) contacts the upper end of the boss (4). The lower end of the support platform (15) is embedded with ball bearings.

5. A grinding wheel mold with a smoothing structure according to claim 1, characterized in that, The upper end of the air distribution pipe (18) is connected to the air inlet pipe (19). The upper end of the air inlet pipe (19) extends through to the upper end of the crossbar (10). The crossbar (10) has an installation hole corresponding to the air inlet pipe (19). The upper end of the air inlet pipe (19) is installed inside the installation hole.

6. A grinding wheel mold with a smoothing structure according to claim 1, characterized in that, Two first jet heads (23) are symmetrically arranged. The nozzle of the first jet head (23) near the boss (4) corresponds to the inner wall of the lower mold body (3), and the nozzle of the first jet head (23) near the inner wall of the lower mold body (3) corresponds to the boss (4). Two second jet heads (24) are both inclined. Both the two first jet heads (23) and the two second jet heads (24) extend through to one side of the scraper (17).

7. A grinding wheel mold with a smoothing structure according to claim 1, characterized in that, The number of the side scraping mechanisms is two sets, and the two sets of side scraping mechanisms are distributed on both sides of the scraper (17). The side scraping mechanism includes a frame (26), which is L-shaped. One side of the frame (26) is connected to one side of the scraper (17). A rotating block (27) is connected to one side of the inner wall of the frame (26). A rotating rod (28) is rotatably connected to the lower end of the rotating block (27). The lower end of the rotating rod (28) extends through to the bottom of the frame (26). A side plate (29) is connected to the lower end of the rotating rod (28). One side of the side plate (29) of the two side scraping mechanisms is in contact with one side of the outer wall of the boss (4) and one side of the inner wall of the lower mold body (3), respectively. One side of the side plate (29) is made of flexible material.

8. A grinding wheel mold with a smoothing structure according to claim 7, characterized in that, A swing block (30) is connected to the middle of the outer wall of the rotating rod (28), and a sliding rod (31) is connected to one side of the inner wall of the frame (26). The sliding rod (31) has an arc-shaped structure. The swing block (30) has a sliding hole corresponding to the sliding rod (31). The sliding rod (31) slides inside the sliding hole. The swing block (30) is sleeved on the sliding rod (31) and can slide along the sliding rod (31). One end of the sliding rod (31) is set in a T-shape. A buffer spring (32) is sleeved on the outer wall of the sliding rod (31). One end of the buffer spring (32) contacts the T-shape at one end of the sliding rod (31). The other end of the buffer spring (32) contacts one side of the swing block (30). A connecting magnet (33) is connected to one side of the swing block (30). A conductive magnet (34) is connected to one side of the inner wall of the frame (26) corresponding to the connecting magnet (33).

Images