A centerless grinder cycle feed system

Abstract

This invention belongs to the technical field of grinding machine equipment and discloses a circulating feeding system for a centerless grinding machine. The system includes a grinding machine and a frame. Two parallel material hoppers are arranged on the frame. A climbing conveyor line is connected to the outlet of the grinding machine. A feeding conveyor line is connected to the end of the climbing conveyor line away from the grinding machine. The end of the feeding conveyor line away from the climbing conveyor line is connected to the material hoppers. An alignment table is provided on the surface of the feeding conveyor line. An inlet conveyor line is connected to the feed inlet of the grinding machine. An unloading conveyor line is connected to the end of the inlet conveyor line away from the grinding machine. The end of the unloading conveyor line away from the inlet conveyor line is connected to the material hoppers. In use, this system offers strong adaptability; its modular structure can accommodate various bearing specifications, and its automated closed-loop design meets the needs of high-volume production lines.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, specifically a circulating feeding system for a centerless grinding machine. Background Technology

[0002] Currently, centerless grinding of bearings mostly adopts a single-feed, single-grind operation mode. Conventional equipment mainly consists of an independent feeding conveyor line, a centerless grinder, and an unloading conveyor line. After the workpiece is fed into the grinder via the feeding conveyor line and completes a single grinding pass, it is directly output by the unloading conveyor line. If the process requires multiple grinding passes, the unloaded bearing workpiece must be manually transferred back to the feeding end, and the feeding and grinding process must be repeated, which is a complex process.

[0003] Some simple circulating processing equipment is only equipped with a basic conveying mechanism, lacking a dedicated workpiece storage bin and a column-aligning structure. Workpieces are randomly stacked during multiple transfers, making them prone to collisions and damage, and the conveying direction and posture cannot be standardized. The various mechanisms are simply connected, without a closed-loop circulation link, and the entire process relies on manual assistance to complete multiple grinding processes. Summary of the Invention

[0004] The purpose of this invention is to provide a circulating feeding system for a centerless grinding machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A circulating feeding system for a centerless grinding machine includes a grinding machine and a frame. Two parallel material hoppers are mounted on the frame. A climbing conveyor line is connected to the outlet of the grinding machine. A feeding conveyor line is connected to the end of the climbing conveyor line away from the grinding machine. The end of the feeding conveyor line away from the climbing conveyor line is connected to the material hoppers. An alignment table is mounted on the surface of the feeding conveyor line. An inlet conveyor line is connected to the feed inlet of the grinding machine. An outlet conveyor line is connected to the end of the inlet conveyor line away from the grinding machine. The end of the outlet conveyor line away from the inlet conveyor line is connected to the material hoppers. Two sets of pushing mechanisms are mounted on the lower layer of the frame. Two sets of discharging mechanisms are mounted on the upper layer of the frame. A blocking mechanism is mounted on the rear side of the frame. A lifting mechanism is mounted on the top of the frame. A control cabinet is mounted at the bottom inside the frame. A touch screen is mounted on the left side of the frame.

[0007] As a further aspect of the present invention: the silo includes two sets of silo connecting plates that are distributed opposite to each other. Multiple changing baffles are respectively provided on the opposite side walls of the two sets of silo connecting plates. A multi-layer silo frame is provided between the two sets of silo connecting plates. A silo upright plate is provided at the top of the silo connecting plate. A first connecting block is provided at the top of the outer side wall of the silo connecting plate. A first swivel bolt is provided on the surface of the first connecting block.

[0008] As a further aspect of the present invention: the pushing mechanism includes a pushing base plate fixedly mounted on the surface of the frame, a pushing cylinder fixedly mounted on the surface of the pushing base plate, a limit block fixedly mounted above the pushing base plate, a lower pushing plate fixedly mounted on the piston plate surface of the pushing cylinder, a conveying blocking cylinder fixedly mounted on the side of the frame, a conveying baffle fixedly mounted below the conveying blocking cylinder, a cylinder fixing plate fixedly mounted on the surface of the frame, an inbound blocking cylinder fixedly mounted on the rear side of the cylinder fixing plate, an inbound baffle fixedly mounted above the piston plate of the inbound blocking cylinder, guide shafts respectively provided on both sides of the inbound blocking cylinder, and second sensors respectively provided on both sides of the lower pushing plate.

[0009] As a further embodiment of the present invention: the dust removal mechanism includes a first servo motor, an electric cylinder is fixedly installed on the surface of the frame, two sets of linear guide rails located outside the electric cylinder are fixedly installed on the surface of the frame, a discharge push plate is fixedly installed on the front side of the piston rod of the electric cylinder, and the linear guide rails are slidably connected to the discharge push plate.

[0010] As a further aspect of the present invention: the blocking mechanism includes a blocking mounting plate fixedly installed above the crossbeam of the frame, a blocking cylinder fixedly installed above the blocking mounting plate, and a blocking baffle fixedly installed in front of the piston plate of the blocking cylinder.

[0011] As a further embodiment of the present invention: the lifting mechanism includes a reducer fixedly mounted on the top surface of the frame, a second servo motor fixedly mounted in front of the reducer, a drive shaft connected to the surface of the reducer, a drive sprocket fixedly mounted on the surface of the drive shaft, a driven shaft rotatably mounted on the bottom of the frame, a driven sprocket fixedly mounted on the surface of the driven shaft, a chain connecting the drive sprocket and the driven sprocket, a second connecting block fixedly mounted on the side wall of the hopper, a second swivel bolt fixedly mounted above the second connecting block, a guide wheel rotatably mounted on the top of the frame that cooperates with the chain, a counterweight fixedly mounted below the second swivel bolt, and a guide rail fixedly mounted at the rear of the frame.

[0012] As a further aspect of the present invention: the aligning table includes an aligning table frame, the bottom of the aligning table frame is provided with a foot, a discharge connecting plate and a lane changing fixing plate are fixedly installed behind the feeding conveyor line, a discharge cylinder is fixedly installed on the side of the discharge connecting plate, a discharge baffle is fixedly installed below the piston plate of the discharge cylinder, a lane changing cylinder is fixedly installed above the lane changing fixing plate, the lane changing cylinder is connected to the lane changing baffle, a lane changing channel and a push plate cylinder are also provided on the surface of the aligning table frame, the push plate cylinder is connected to a push plate, an aligning table body is provided on the front side of the push plate, a first sensor is provided on the surface of the aligning table body, and a discharge sensor is provided on the outside of the lane changing channel.

[0013] As a further aspect of the present invention, a safety door is provided on the outside of the frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] I. Cost Reduction and Efficiency Improvement: The system achieves fully automated cycling of the multi-pass grinding process, eliminating manual transfer steps and reducing the number of operators by two per unit, thus improving overall production efficiency. The fast and efficient conveying speed meets the grinding machine's production cycle time without damaging the equipment, while the A / B material bins allow for large-scale material storage.

[0016] II. Improve processing quality: Unified workpiece posture during material feeding, precise positioning during cyclic feeding, significantly reduced defects, and improved yield rate.

[0017] 3. More stable operation: The storage bin has batch caching capability, which effectively balances the operation rhythm of each process, solves the problems of material blockage and material interruption, and significantly increases the continuous running time of the equipment.

[0018] IV. High adaptability: The modular structure can be adapted to various bearing specifications, and the automated closed-loop design meets the needs of mass production lines. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a circulating feed system for a centerless grinder provided in an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the frame and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of a material hopper and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the hopper frame and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention. Figure 1 .

[0023] Figure 5 This is a schematic diagram of the hopper frame and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention. Figure 2 .

[0024] Figure 6 This is a schematic diagram of the push cylinder and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of a guide shaft and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the inlet blocking cylinder and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0027] Figure 9 This is a schematic diagram of an electric cylinder and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0028] Figure 10 This is a schematic diagram of a blocking cylinder and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0029] Figure 11 This is a schematic diagram of a reducer and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0030] Figure 12 This is a schematic diagram of a chain and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0031] Figure 13 This is a schematic diagram of the feeding cylinder and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0032] Figure 14 This is a schematic diagram of a reversing cylinder and its connection structure in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0033] Figure 15 This is a schematic diagram of the structure of a row of machine frames in a circulating feeding system for a centerless grinder provided in an embodiment of the present invention.

[0034] Among them: 1-Grinding machine, 11-Climbing conveyor line, 12-Feeding conveyor line, 13-Unloading conveyor line, 14-Inlet conveyor line, 2-Material silo, 21-Silo frame, 22-Silo connecting plate, 23-Silo upright plate, 24-First connecting block, 25-First union bolt, 26-Type changing baffle, 3-Arching table, 31-Arching table frame, 32-Foot, 33-Channel changing fixing plate, 34-Unloading connecting plate, 35-Unloading cylinder, 36-Unloading baffle, 37-Channel changing cylinder, 38-Channel changing baffle, 39-Channel changing channel, 310-Unloading sensor, 311-Push plate cylinder, 312-Push plate, 313-Arching table body, 314-First sensor, 4-Frame, 5-Pushing mechanism, 51-Conveying baffle, 52-Pushing cylinder, 53-Pushing base plate, 5 4-Limit block, 55-Lower push plate, 56-Second sensor, 57-Conveying blocking cylinder, 58-Inbound blocking cylinder, 59-Guide shaft, 510-Cylinder fixing plate, 511-Inbound baffle, 6-Discharge mechanism, 61-Electric cylinder, 62-Linear guide rail, 63-Discharge push plate, 64-First servo motor, 7-Lifting mechanism, 71-Reducer, 72-Second servo motor, 73-Drive shaft, 74-Drive sprocket, 75-Chain, 76-Driven shaft, 77-Driven sprocket, 78-Second union bolt, 79-Second connecting block, 710-Guide wheel, 711-Counterweight block, 712-Guide rail, 8-Blocking mechanism, 81-Blocking mounting plate, 82-Blocking cylinder, 83-Blocking baffle, 9-Safety door, 10-Control cabinet, 101-Touch screen. Detailed Implementation

[0035] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0036] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0037] like Figure 1 , Figure 2 , Figure 3The diagram shown illustrates the structure of a circulating feeding system for a centerless grinding machine according to an embodiment of the present invention. The system includes a grinding machine 1 and a frame 4. Two parallel material hoppers 2 are mounted on the frame 4. A climbing conveyor line 11 is connected to the outlet of the grinding machine 1. A feeding conveyor line 12 is connected to the end of the climbing conveyor line 11 furthest from the grinding machine 1. The end of the feeding conveyor line 12 furthest from the climbing conveyor line 11 is connected to the material hoppers 2. An alignment table 3 is provided on the surface of the feeding conveyor line 12. The feed inlet of the grinding machine 1 is connected to... There is an inlet conveyor line 14, and the end of the inlet conveyor line 14 away from the grinding machine 1 is connected to the unloading conveyor line 13. The end of the unloading conveyor line 13 away from the inlet conveyor line 14 is connected to the material hopper 2. The lower layer of the frame 4 is provided with two sets of pushing mechanisms 5, the upper layer of the frame 4 is provided with two sets of discharging mechanisms 6, the rear side of the frame 4 is provided with a blocking mechanism 8, the top of the frame 4 is provided with a lifting mechanism 7, the bottom of the frame 4 is provided with a control cabinet 10, and the left side of the frame 4 is provided with a touch screen 101.

[0038] The grinding machine 1, together with the climbing conveyor line 11, the loading conveyor line 12, the unloading conveyor line 13, the inlet conveyor line 14, the hopper 2, and the aligning table 3, forms a closed-loop circulation circuit to complete multiple automatic cyclic grinding cycles of bearing workpieces. Grinded workpieces can slide onto the climbing conveyor line 11, and then be conveyed from the climbing conveyor line 11 to the loading conveyor line 12. It can also temporarily store workpieces in case of emergencies. One end of the loading conveyor line 12 is connected to the climbing conveyor line 11, and the other end is connected to the hopper 2, allowing all workpieces to be smoothly fed into the hopper 2 for storage and preparation. Simultaneously, it is connected to the aligning table 3, ensuring all workpieces are smoothly and orderly unloaded, serving as a transfer unit. The hopper 2 acts as a workpiece buffer and cyclic transfer unit. Its inlet receives ground workpieces, and its outlet connects to the unloading conveyor line 13. It can temporarily store workpieces in batches, and according to the program, workpieces that have not completed multiple grinding cycles are returned to the inlet to continue the cycle. After all multiple grinding cycles are completed, the system controls the output of the workpiece as a finished product. The feed inlet of the grinding machine 1 is connected to the inlet conveyor line 14, which continuously feeds the bearings to be ground to the grinding machine 1. It is the main channel for circulating feeding, ensuring continuous feeding of workpieces. The aligning table 3 organizes the randomly discharged bearings into a uniform posture and regular arrangement before sending them into the hopper 2, avoiding workpiece stacking and ensuring a uniform posture. This allows for large-scale storage of workpieces at once, saving on frequent manual unloading. In use, the manual feeder 12 feeds the bearings to the hopper 2. The pushing mechanism 5 pushes the bearings into the hopper 2, starting from the bottom layer. Each time a layer is full, the lifting mechanism 7 raises it by one layer. Each hopper 2 has 15 layers. After all 15 layers of hopper 2 are full, the upper discharge mechanism 6 pushes the bearings out of the hopper 2 to the unloading conveyor line 13. The pushing starts from the top layer of hopper 2 until all 15 layers of hopper 2 are pushed out. Then, the hopper 2 returns to the bottom via the lifting mechanism 7. This cycle continues until the grinding machine 1 has completed multiple cycles of grinding.

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, in a preferred embodiment of the present invention, the silo 2 includes two sets of silo connecting plates 22 distributed opposite to each other. Multiple changing baffles 26 are respectively provided on the opposite side walls of the two sets of silo connecting plates 22. A multi-layer silo frame 21 is provided between the two sets of silo connecting plates 22. A silo upright plate 23 is provided at the top of the silo connecting plate 22. A first connecting block 24 is provided at the top of the outer side wall of the silo connecting plate 22. A first swivel bolt 25 is provided on the surface of the first connecting block 24.

[0040] like Figure 2 , Figure 6 , Figure 7 , Figure 8 As shown, in a preferred embodiment of the present invention, the pushing mechanism 5 includes a pushing base plate 53 fixedly mounted on the surface of the frame 4, a pushing cylinder 52 fixedly mounted on the surface of the pushing base plate 53, a limit block 54 fixedly mounted above the pushing base plate 53, a lower push plate 55 fixedly mounted on the piston plate surface of the pushing cylinder 52, a conveying blocking cylinder 57 fixedly mounted on the side of the frame 4, a conveying baffle 51 fixedly mounted below the conveying blocking cylinder 57, a cylinder fixing plate 510 fixedly mounted on the surface of the frame 4, an entry blocking cylinder 58 fixedly mounted on the rear side of the cylinder fixing plate 510, an entry baffle 511 fixedly mounted above the piston plate of the entry blocking cylinder 58, guide shafts 59 respectively provided on both sides of the entry blocking cylinder 58, and second sensors 56 respectively provided on both sides of the lower push plate 55.

[0041] During use, the lower push plate 55 moves back and forth with the piston plate of the push cylinder 52. When the push cylinder 52 retracts, it is limited by the limit block 54. The bearings conveyed from the feeding conveyor line 12 are blocked by the conveying baffle 51. The conveying baffle 51 is fixed below the conveyor line blocking cylinder 57 and moves up and down with the conveyor blocking cylinder 57. The storage baffle 511 is fixed above the piston plate of the storage blocking cylinder 58 and moves up and down with the storage blocking cylinder 58. The storage blocking cylinder 58 has guide shafts 59 on both sides to make its guidance more accurate. When the number of conveyed bearings reaches the position of the second sensor 56, the second sensors 56 on both sides are detected, the storage baffle 511 descends, and the push bottom plate 53 pushes the bearings into the material storage 2.

[0042] like Figure 3 , Figure 9As shown, in a preferred embodiment of the present invention, the dust removal mechanism 6 includes a first servo motor 64, an electric cylinder 61 is fixedly mounted on the surface of the frame 4, two sets of linear guide rails 62 located outside the electric cylinder 61 are fixedly mounted on the surface of the frame 4, a discharge push plate 63 is fixedly mounted on the front side of the piston rod of the electric cylinder 61, and the linear guide rails 62 are slidably connected to the discharge push plate 63.

[0043] The discharge pusher plate 63 is fixed in front of the piston rod of the electric cylinder 61 and guided by the linear guide rails 62 on both sides; after the 15 layers of material in the material hopper 2 are full, they are pushed out by the discharge pusher plate 63 in each row.

[0044] like Figure 3 , Figure 10 As shown, in a preferred embodiment of the present invention, the blocking mechanism 8 includes a blocking mounting plate 81 fixedly installed above the crossbeam of the frame 4, a blocking cylinder 82 fixedly installed above the blocking mounting plate 81, and a blocking baffle 83 fixedly installed in front of the piston plate of the blocking cylinder 82.

[0045] In use, the blocking cylinder 82 pushes the blocking baffle 83 to move, and the blocking baffle 83 pushes the lower push plate 55 into the material hopper 2 so that each row of bearings is neatly arranged.

[0046] like Figure 3 , Figure 11 , Figure 12 As shown, in a preferred embodiment of the present invention, the lifting mechanism 7 includes a reducer 71 fixedly mounted on the top surface of the frame 4, a second servo motor 72 fixedly mounted in front of the reducer 71, a drive shaft 73 connected to the surface of the reducer 71, a drive sprocket 74 fixedly mounted on the surface of the drive shaft 73, a driven shaft 76 rotatably mounted on the bottom of the frame 4, a driven sprocket 77 fixedly mounted on the surface of the driven shaft 76, a chain 75 connecting the drive sprocket 74 and the driven sprocket 77, a second connecting block 79 fixedly mounted on the side wall of the hopper 2, a second swivel bolt 78 fixedly mounted above the second connecting block 79, a guide wheel 710 rotatably mounted on the top of the frame 4 that cooperates with the chain 75, a counterweight 711 fixedly mounted below the second swivel bolt 78, and a guide rail 712 fixedly mounted at the rear of the frame 4.

[0047] like Figure 1 , Figure 13 , Figure 14 , Figure 15As shown in the preferred embodiment of the present invention, the aligning table 3 includes an aligning table frame 31, a base 32 is provided at the bottom of the aligning table frame 31, a discharge connecting plate 34 and a lane changing fixing plate 33 are fixedly installed behind the feeding conveyor line 12, a discharge cylinder 35 is fixedly installed on the side of the discharge connecting plate 34, a discharge baffle 36 is fixedly installed below the piston plate of the discharge cylinder 35, a lane changing cylinder 37 is fixedly installed above the lane changing fixing plate 33, the lane changing cylinder 37 is connected to the lane changing baffle 38, a lane changing channel 39 and a push plate cylinder 311 are also provided on the surface of the aligning table frame 31, a push plate 312 is connected to the push plate cylinder 311, an aligning table body 313 is provided on the front side of the push plate 312, a first sensor 314 is provided on the surface of the aligning table body 313, and a discharge sensor 310 is provided on the outside of the lane changing channel 39.

[0048] When feeding, the reversing cylinder 37 retracts, and the unloading cylinder 35 descends, blocking the entrance of the unloading channel, and the bearing is conveyed to the material storage 2. After multiple grinding passes, the reversing cylinder 37 extends, the unloading cylinder 35 rises, the reversing baffle 38 blocks the passage to the material storage 2, the unloading channel entrance opens, and the bearing slides down through the unloading channel onto the main body 313 of the assembly table. The unloading channel is fixed in front of the feeding conveyor line 12. When the unloading sensor 310 detects the bearing, the pusher plate 312 pushes out the bearing row by row until the bearing row returns to the position of the first sensor 314, and the equipment reminds the operator to unload the bearing.

[0049] like Figure 2 , Figure 11 As shown, in a preferred embodiment of the present invention, a safety door 9 is provided on the outside of the frame 4.

[0050] The working principle of this invention is as follows: The grinding machine 1, together with the climbing conveyor line 11, the loading conveyor line 12, the unloading conveyor line 13, the inlet conveyor line 14, the hopper 2, and the aligning table 3, forms a closed-loop circulation circuit to complete multiple automatic cyclic grinding cycles of the bearing workpiece. The ground workpiece can slide down to the climbing conveyor line 11, and then be conveyed by the climbing conveyor line 11 to the loading conveyor line 12. If necessary, it can also temporarily store materials. One end of the loading conveyor line 12 is connected to the climbing conveyor line 11, and the other end is connected to the hopper 2, allowing all workpieces to be leveled and fed into the hopper 2 for storage and preparation. Simultaneously, it is connected to the aligning table 3, ensuring that all workpieces are leveled and unloaded in an orderly manner, serving as a transfer and transition unit. The hopper 2 acts as a workpiece buffer and cyclic transfer unit. The inlet end receives ground workpieces, and the outlet end connects to the unloading conveyor line 13. It can temporarily store workpieces in batches, and according to the program, workpieces that have not completed multiple grinding cycles are returned to the inlet end to continue the cycle. After all multiple grinding cycles are completed, the system controls the output of the workpiece as a finished product. The feed inlet of the grinding machine 1 is connected to the inlet conveyor line 14, which continuously feeds the bearings to be ground to the grinding machine 1. It is the main channel for circulating feeding, ensuring continuous feeding of workpieces. The aligning table 3 organizes the randomly discharged bearings into a uniform posture and regular arrangement before sending them into the hopper 2, avoiding workpiece stacking and ensuring a uniform posture. This allows for large-scale storage of workpieces at once, saving on frequent manual unloading. In use, the manual feeder 12 feeds the bearings to the hopper 2. The pushing mechanism 5 pushes the bearings into the hopper 2, starting from the bottom layer. Each time a layer is full, the lifting mechanism 7 raises it by one layer. Each hopper 2 has 15 layers. After all 15 layers of hopper 2 are full, the upper discharge mechanism 6 pushes the bearings out of the hopper 2 to the unloading conveyor line 13. The pushing starts from the top layer of hopper 2 until all 15 layers of hopper 2 are pushed out. Then, the hopper 2 returns to the bottom via the lifting mechanism 7. This cycle continues until the grinding machine 1 has completed multiple cycles of grinding.

[0051] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A circulating feeding system for a centerless grinding machine, comprising a grinding machine (1) and a frame (4), wherein two parallel material hoppers (2) are arranged on the frame (4), characterized in that, The outlet of the grinding machine (1) is connected to a climbing conveyor line (11). The end of the climbing conveyor line (11) away from the grinding machine (1) is connected to a feeding conveyor line (12). The end of the feeding conveyor line (12) away from the climbing conveyor line (11) is connected to a material hopper (2). A lining table (3) is provided on the surface of the feeding conveyor line (12). The feed inlet of the grinding machine (1) is connected to an inlet conveyor line (14). The end of the inlet conveyor line (14) away from the grinding machine (1) is connected to a discharge conveyor line. Line (13), the end of the feeding conveyor line (13) away from the inlet conveyor line (14) is connected to the material silo (2), the lower layer of the frame (4) is provided with two sets of pushing mechanisms (5), the upper layer of the frame (4) is provided with two sets of discharge mechanisms (6), the rear side of the frame (4) is provided with a blocking mechanism (8), the top of the frame (4) is provided with a lifting mechanism (7), the bottom of the frame (4) is provided with a control cabinet (10), and the left side of the frame (4) is provided with a touch screen (101).

2. The circulating feeding system for a centerless grinding machine according to claim 1, characterized in that, The silo (2) includes two sets of silo connecting plates (22) distributed opposite to each other. Multiple changing baffles (26) are provided on the opposite side walls of the two sets of silo connecting plates (22). A multi-layer silo frame (21) is provided between the two sets of silo connecting plates (22). A silo upright plate (23) is provided at the top of the silo connecting plate (22). A first connecting block (24) is provided at the top of the outer side wall of the silo connecting plate (22). A first live bolt (25) is provided on the surface of the first connecting block (24).

3. The circulating feeding system for a centerless grinding machine according to claim 1, characterized in that, The pushing mechanism (5) includes a pushing base plate (53) fixedly installed on the surface of the frame (4), a pushing cylinder (52) fixedly installed on the surface of the pushing base plate (53), a limit block (54) fixedly installed above the pushing base plate (53), a lower push plate (55) fixedly installed on the piston plate surface of the pushing cylinder (52), a conveying blocking cylinder (57) fixedly installed on the side of the frame (4), a conveying baffle (51) fixedly installed below the conveying blocking cylinder (57), a cylinder fixing plate (510) fixedly installed on the surface of the frame (4), an inbound blocking cylinder (58) fixedly installed on the rear side of the cylinder fixing plate (510), an inbound baffle (511) fixedly installed above the piston plate of the inbound blocking cylinder (58), guide shafts (59) respectively provided on both sides of the inbound blocking cylinder (58), and second sensors (56) respectively provided on both sides of the lower push plate (55).

4. The circulating feeding system for a centerless grinding machine according to claim 1, characterized in that, The dust removal mechanism (6) includes a first servo motor (64), an electric cylinder (61) is fixedly installed on the surface of the frame (4), two sets of linear guide rails (62) located outside the electric cylinder (61) are fixedly installed on the surface of the frame (4), and a discharge push plate (63) is fixedly installed on the front side of the piston rod of the electric cylinder (61). The linear guide rails (62) and the discharge push plate (63) are slidably connected.

5. The circulating feeding system for a centerless grinding machine according to claim 1, characterized in that, The blocking mechanism (8) includes a blocking mounting plate (81) fixedly installed above the crossbeam of the frame (4), a blocking cylinder (82) fixedly installed above the blocking mounting plate (81), and a blocking baffle (83) fixedly installed in front of the piston plate of the blocking cylinder (82).

6. The circulating feeding system for a centerless grinding machine according to claim 1, characterized in that, The lifting mechanism (7) includes a reducer (71) fixedly installed on the top surface of the frame (4), a second servo motor (72) fixedly installed in front of the reducer (71), a drive shaft (73) connected to the surface of the reducer (71), a drive sprocket (74) fixedly installed on the surface of the drive shaft (73), a driven shaft (76) rotatably installed at the bottom of the frame (4), a driven sprocket (77) fixedly installed on the surface of the driven shaft (76), a chain (75) connected between the drive sprocket (74) and the driven sprocket (77), a second connecting block (79) fixedly installed on the side wall of the hopper (2), a second live bolt (78) fixedly installed above the second connecting block (79), a guide wheel (710) rotatably installed at the top of the frame (4) that cooperates with the chain (75), a counterweight (711) fixedly installed below the second live bolt (78), and a guide rail (712) fixedly installed at the rear of the frame (4).

7. A circulating feed system for a centerless grinding machine according to claim 1, characterized in that, The alignment table (3) includes an alignment table frame (31), and a foot (32) is provided at the bottom of the alignment table frame (31). A feeding connecting plate (34) and a lane changing fixing plate (33) are fixedly installed behind the feeding conveyor line (12). A feeding cylinder (35) is fixedly installed on the side of the feeding connecting plate (34). A feeding baffle (36) is fixedly installed below the piston plate of the feeding cylinder (35). A lane changing cylinder (36) is fixedly installed above the lane changing fixing plate (33). 7) The lane-changing cylinder (37) is connected to the lane-changing baffle (38). The surface of the aligning table frame (31) is also provided with a lane-changing material channel (39) and a push plate cylinder (311). The push plate cylinder (311) is connected to a push plate (312). The front side of the push plate (312) is provided with an aligning table body (313). The surface of the aligning table body (313) is provided with a first sensor (314). The outside of the lane-changing material channel (39) is provided with a feeding sensor (310).

8. A circulating feed system for a centerless grinding machine according to claim 1, characterized in that, A safety door (9) is provided on the outside of the frame (4).

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