Centerless grinding machine feeding and discharging linkage control system and centerless grinding machine

Abstract

The application discloses a feeding and discharging linkage control system of a centerless grinding machine, which comprises a feeding mechanism, a discharging mechanism, a fault monitoring mechanism and a control mechanism. The feeding mechanism comprises a pushing cylinder and a pushing sensor. The pushing cylinder reciprocates between a first position and an initial position and pushes the material at the initial position to the first position. The pushing sensor detects the stroke position of the pushing cylinder and outputs a stroke detection signal. The fault monitoring mechanism outputs a fault signal when the grinding machine fails. The control mechanism receives the fault signal and judges whether the pushing cylinder is at the initial position according to the stroke detection signal. If yes, the pushing cylinder is controlled to stop. If not, the pushing cylinder is controlled to continue reciprocating until the pushing cylinder is reset to the initial position, and then the pushing cylinder is controlled to stop. The application also discloses a centerless grinding machine. Compared with the prior art, the application prevents the fault from occurring and prevents the feeding mechanism from being blocked after repair, and ensures the continuity of feeding and discharging of the centerless grinding machine.

Description

Technical Field

[0001] This invention relates to a loading and unloading system for grinding processes, and more particularly to a loading and unloading linkage control system for a centerless grinder and the centerless grinder itself. Background Technology

[0002] Currently, centerless grinders are grinding machines that do not require workpiece axis positioning for grinding. They are suitable for grinding slender cylindrical workpieces, and are especially suitable for fine grinding of the outer diameter of the shank of PCB miniature drill bits. The unloading mechanism of centerless fine grinding equipment adopts a V-shaped sliding groove mechanism. When the product is discharged from the centerless grinder, it slides into the receiving tray by the grinding thrust of the centerless grinder guide wheel and its own weight inertia. In the early stage, manual material receiving was required. Later, automatic feeding mechanism, unloading mechanism and tray insertion mechanism were gradually developed. However, there has always been a linkage difference between feeding and unloading. When the unloading is blocked or jammed, the feeding action is still in progress, causing more product scrap and failure damage.

[0003] For example, referring to Chinese Patent CN109940468A, a centerless grinding machine system is disclosed, including a feeding unit and a grinding machine. The feeding unit includes a hopper, an auxiliary pushing cylinder disposed on one side of the hopper, an auxiliary ejector pin disposed on the power output end of the auxiliary pushing cylinder, an auxiliary guide tube disposed on the other side of the hopper, and a receiving groove disposed directly below the outlet of the hopper; the receiving groove, the auxiliary ejector pin, and the auxiliary guide tube are on the same straight line; the auxiliary guide tube is connected to the grinding machine. In this solution, the pusher cylinder needs to push the material from the receiving trough below the hopper into the auxiliary guide tube outside the hopper, and gradually enter the grinding machine as the pusher cylinder pushes. However, when the grinding machine malfunctions, the existing wireless grinding machine system often directly controls the feeding unit to stop working. If the pusher cylinder is in the pushing state, stopping it directly will cause material to still fall into the hopper. When the malfunction is resolved and work resumes, for example, if there is a blockage of material in the receiving trough directly below the hopper, in the existing technology, personnel often need to remove the hopper from the receiving trough for cleaning, which will cause more product scrap and malfunction damage.

[0004] Therefore, how to achieve material input and output linkage to reduce scrap rate and improve production efficiency is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a centerless grinding machine loading and unloading linkage control system and a centerless grinding machine, to prevent material jamming at the loading mechanism after a malfunction occurs and is repaired, and to ensure the continuity of loading and unloading of the centerless grinding machine.

[0006] To achieve the above objectives, this invention discloses a centerless grinding machine loading and unloading linkage control system, including a loading mechanism, an unloading mechanism, a fault monitoring mechanism, and a control mechanism. The loading mechanism includes a pushing cylinder and a pushing sensor. The pushing cylinder reciprocates between a first position and an initial position, pushing the material from the initial position to the first position, thereby conveying the material to the grinding position. The pushing sensor detects the stroke position of the pushing cylinder and outputs a stroke detection signal. The unloading mechanism conveys the ground material from the grinding position. The fault monitoring mechanism controls the loading and unloading of the material in the centerless grinding machine. When the grinding machine malfunctions, it outputs a fault signal, including an emergency stop signal for abnormal material discharge when the unloading mechanism malfunctions. The control mechanism receives the fault signal and the stroke detection signal in real time. When it receives the fault signal, it determines the stroke position of the pusher cylinder based on the stroke detection signal. When the pusher cylinder returns to its initial position, it controls the pusher cylinder to stop moving. When the pusher cylinder does not return to its initial position, it controls the pusher cylinder to continue reciprocating until the pusher cylinder returns to its initial position and then controls the pusher cylinder to stop moving.

[0007] Compared with existing technologies, this invention links the fault signal of the unloading mechanism with the loading action of the loading mechanism. When an abnormality occurs during unloading, the loading mechanism is controlled to reset and stop, ensuring the linkage between unloading and loading of the system. Furthermore, when the centerless grinder malfunctions and requires an emergency stop, this invention does not immediately control the pusher cylinder to stop or issue a reset stop command to the pusher cylinder. Instead, it waits for the pusher cylinder to push the material into place and return to its original position before controlling the pusher cylinder to stop. This prevents the entire system from stopping abruptly when a fault occurs, thus avoiding the problem of material getting stuck at the inlet. It also ensures the continuity of unloading and loading of the entire system after the equipment is repaired.

[0008] Preferably, after receiving the fault signal, the control mechanism determines the stroke position of the pusher cylinder based on the stroke detection signal, and determines whether the pusher cylinder is in the push stroke from the initial position to the first position or has pushed the material to the desired position. If not, it waits for the pusher cylinder to reset to the desired position and then controls the pusher cylinder to stop moving. If yes, it waits for the pusher cylinder to move to the first position and then controls the pusher cylinder to reset. Finally, it waits for the pusher cylinder to reset to the desired position and then controls the pusher cylinder to reset and stop.

[0009] Specifically, the stroke detection signal includes a push-in signal and a reset signal. The push sensor outputs a push-in signal when the push cylinder pushes the material into place, and the push sensor outputs a reset signal when the push cylinder resets into place. When the control mechanism receives the fault signal, it waits while the push cylinder is in the reset stroke from the first position to the initial position and controls the push cylinder to stop working when it receives the reset signal; it controls the push cylinder to stop working when it is in the reset position; it waits for the push-in signal while the push cylinder is in the push stroke from the initial position to the first position and controls the push cylinder to reset when it receives the push-in signal and controls the push cylinder to stop working when it receives the reset signal; it controls the push cylinder to reset when it is in the push-in position and controls the push cylinder to stop working when it receives the reset signal.

[0010] Specifically, the stroke detection signal includes a push-in signal, the push-in sensor includes a first push-in sensor, the first push-in sensor outputs a push-in signal when the push-in cylinder pushes the material into place, and the control mechanism determines the stroke position of the push-in cylinder based on the time interval between the acquisition time of the push-in signal and the current time.

[0011] Specifically, the stroke detection signal includes a reset position signal, the pusher sensor includes a second pusher sensor, the second pusher sensor outputs a reset position signal when the pusher cylinder is reset to the position, and the control mechanism determines the stroke position of the pusher cylinder based on the time interval between the acquisition time of the reset position signal and the current time.

[0012] Specifically, the pusher sensor includes a first pusher sensor and a second pusher sensor. The first pusher sensor outputs a pusher position signal when the pusher cylinder pushes the material into position, and the second pusher sensor outputs a reset position signal when the pusher cylinder resets into position. The control mechanism receives the pusher position signal and the reset position signal in real time, and determines the stroke position of the pusher cylinder based on the order in which the pusher position signal and the reset position signal arrive.

[0013] Preferably, the fault signal further includes one or more of the following: a feeding abnormality emergency stop signal output when the feeding mechanism malfunctions and a grinding abnormality emergency stop signal output when a grinding emergency malfunction occurs.

[0014] Preferably, the control mechanism starts to determine whether the time interval between the acquisition time of the material push signal and the current time is greater than the warning duration based on the fault signal, and controls the feeding mechanism to stop operating when the time interval is greater than the warning duration.

[0015] Preferably, the feeding mechanism further includes a material distribution hopper and a material guide trough. The material guide trough is provided with a conveying channel for guiding and conveying materials. The outlet of the material distribution hopper is located on the material guide trough, and it separates and sequentially conveys the materials to the material guide trough. The pushing cylinder is located at the front end of the material guide trough. The push rod of the pushing cylinder can extend into the conveying channel and push the materials in the conveying channel from front to back along the conveying channel for a preset stroke, so that the materials are sequentially conveyed to the grinding position. The control mechanism immediately controls the material distribution hopper to stop operating upon receiving the fault signal.

[0016] Specifically, the feeding hopper includes a feeding hopper capable of loading several processing materials, a side cylinder, and a side material-pushing block. The side material-pushing block is rotatably mounted on the side of the feeding hopper around a first rotating shaft and extends into the feeding hopper. The side cylinder drives the side material-pushing block to rotate around the first rotating shaft to agitate the materials in the feeding hopper, so that the materials are sequentially output from the outlet of the feeding hopper along the feeding hopper.

[0017] Preferably, the fault monitoring mechanism and the control mechanism are integrated into the unloading mechanism, and the control mechanism further controls the unloading mechanism to stop operating based on the output fault signal. By controlling the pusher cylinders of both the unloading and loading mechanisms to stop operating through the same mechanism, the continuity between the unloading and loading mechanisms is further ensured.

[0018] The present invention also discloses a centerless grinding machine with linked loading and unloading, including a loading and unloading linkage control system and a grinding wheel mechanism. The grinding wheel mechanism grinds the material at the grinding position, and the loading and unloading linkage control system is the centerless grinding machine loading and unloading linkage control system as described above. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the centerless grinder of the present invention.

[0020] Figure 2 This is a structural diagram of the feeding mechanism of the present invention from one angle.

[0021] Figure 3 This is a structural diagram of the feeding mechanism of the present invention from another angle. Detailed Implementation

[0022] To illustrate the technical content, structural features, objectives, and effects of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0023] refer to Figure 1This invention discloses a centerless grinding machine 100 with linked loading and unloading, including a loading mechanism 10, an unloading mechanism 20, a fault monitoring mechanism 30, a control mechanism 40, and a grinding wheel mechanism 50. The loading mechanism 10 conveys material 200 to the grinding wheel mechanism 50, which grinds the material 200 at the grinding position. The unloading mechanism 20 conveys the ground material 200 out of the grinding wheel mechanism 50. The fault monitoring mechanism 30 monitors the operation of the loading mechanism 10, the unloading mechanism 20, and the grinding wheel mechanism 50 and outputs a fault signal when any of these components malfunctions. The control mechanism 40 controls the operation of the loading mechanism 10 and the unloading mechanism 20 respectively, and stops their operation when a fault occurs.

[0024] The fault monitoring mechanism 30 includes a sensing part and a judgment part. The sensing part consists of sensors or detection mechanisms respectively disposed in the feeding mechanism 10, the unloading mechanism 20, and the grinding wheel mechanism 50. The judgment part can be set independently, loaded into the control mechanism 40, or directly set in the controller of one or more of the feeding mechanism 10, the unloading mechanism 20, and the grinding wheel mechanism 50. In this embodiment, the fault monitoring mechanism 30 monitors the operation of the feeding mechanism 10, the unloading mechanism 20, and the grinding wheel mechanism 50. Of course, the fault monitoring mechanism 30 can also only monitor the operation of the unloading mechanism 20 to generate an emergency stop signal for abnormal material discharge when the unloading mechanism 20 malfunctions.

[0025] refer to Figure 2 and Figure 3 The feeding mechanism 10 includes a pushing cylinder 11 and a pushing sensor. The pushing cylinder 11 moves back and forth along a preset path between a first position and an initial position, and pushes the material at the initial position forward to the first position so that the material is transported to the grinding position. The pushing sensor detects the stroke position of the pushing cylinder 11 and outputs a stroke detection signal.

[0026] The feeding mechanism 20 conveys the ground material 200 from the grinding position. The feeding mechanism 20 is a receiving tray machine and includes a translation mechanism, an XY mechanical axis, and a rear pushing mechanism.

[0027] The fault monitoring mechanism 30 detects grinding machine faults and outputs a fault signal when the centerless grinding machine malfunctions. The fault signal includes an emergency stop signal for abnormal material discharge when the unloading mechanism 20 malfunctions.

[0028] The control mechanism 40 is connected to the feeding mechanism 10, the unloading mechanism, and the fault monitoring mechanism 30 respectively. It receives the fault signal and the stroke detection signal in real time. When the fault signal is received, it determines whether the pusher cylinder 11 has been reset to the initial position based on the stroke detection signal. If so, it controls the pusher cylinder 11 to stop moving. Otherwise, it controls the pusher cylinder 11 to continue to move back and forth until the pusher cylinder 11 is reset to the initial position and then controls the pusher cylinder 11 to stop moving.

[0029] Specifically, after receiving the fault signal, the control mechanism 40 determines the stroke position of the pusher cylinder 11 based on the stroke detection signal. It determines whether the pusher cylinder 11 is in the push stroke from the initial position to the first position or has reached the push position. If not, it waits for the pusher cylinder 11 to reset before controlling it to stop. If it is, it waits for the pusher cylinder 11 to move to the first position before controlling it to reset, and then waits for it to reset before stopping. If the pusher cylinder 11 is exactly in the initial position when the fault signal arrives, it only needs to wait 0 seconds (instantly) to stop. If the pusher cylinder 11 is in the push stroke, although the control mechanism 40 generates a corresponding emergency stop signal, it still independently controls the pusher cylinder 11 to continue pushing and then controls it to reset after reaching the push position, stopping operation after resetting.

[0030] Specifically, when the control mechanism 40 receives the fault signal, it waits while the pusher cylinder 11 is in the reset stroke from the first position to the initial position and controls the pusher cylinder 11 to stop working when it receives the reset signal; it controls the pusher cylinder 11 to stop working when it is in the reset position; it waits for the push signal when the pusher cylinder 11 is in the push stroke from the initial position to the first position and controls the pusher cylinder 11 to reset when it receives the push signal and controls the pusher cylinder 11 to stop working when it receives the reset signal; it controls the pusher cylinder 11 to reset when it is in the push position and controls the pusher cylinder 11 to stop working when it receives the reset signal.

[0031] In the first embodiment of the present invention, the stroke detection signal includes a push-in signal, and the push sensor includes a first push sensor 121. The first push sensor 121 outputs a push-in signal when the push cylinder 11 pushes the material into place. When the control mechanism 40 receives the fault signal, it calculates the time interval between the acquisition time of the push-in signal and the current time, and determines the stroke position of the push cylinder 11 based on the time interval. When the time interval is less than or equal to a first preset time, it determines whether the push cylinder 11 is in the reset stroke after pushing the material into place and returning to the initial position. The first preset time is the reset time of the push cylinder 11 from pushing the material into place to returning to the initial position.

[0032] Of course, unlike the above embodiments, in the second embodiment of the present invention, the stroke detection signal includes a reset position signal, the pusher sensor includes a second pusher sensor 122, the second pusher sensor 122 detects the stroke position of the pusher cylinder 11 and outputs a reset position signal when the pusher cylinder 11 is reset to the position, the control mechanism 40 receives the reset position signal in real time, and when the control mechanism 40 receives the fault signal, it determines the time interval between the acquisition time of the reset position signal and the current time, and determines the stroke position of the pusher cylinder 11 based on the time interval.

[0033] In the third embodiment of the present invention, the stroke detection signal includes a push-to-position signal and a reset-to-position signal. The push-to-position sensor includes a first push-to-position sensor 121 and a second push-to-position sensor 122. The first push-to-position sensor 121 outputs a push-to-position signal when the push-to-position cylinder 11 pushes the material to the desired position. The second push-to-position sensor 122 detects the stroke position of the push-to-position cylinder 11 and outputs a reset-to-position signal when the push-to-position cylinder 11 resets to the desired position. The control mechanism 40 receives the reset-to-position signal in real time. When the control mechanism 40 receives the fault signal, it compares the order of the last obtained reset-to-position signal and the push-to-position signal. If the reset-to-position signal is earlier than the push-to-position signal, it determines whether the push-to-position cylinder 11 is in the reset stroke after pushing the material to the desired position and returning to the initial position.

[0034] Preferably, the fault signal also includes one or more of the following: a feeding abnormality emergency stop signal output when the feeding mechanism 10 malfunctions and a grinding abnormality emergency stop signal output when a grinding emergency malfunction occurs.

[0035] Preferably, the control mechanism 40 starts to determine whether the time interval between the acquisition time of the material push signal and the current time is greater than the warning duration based on the fault signal, and controls the feeding mechanism 10 to stop operating when the time interval is greater than the warning duration.

[0036] Preferably, the feeding mechanism 10 further includes a material distribution hopper 14 and a material guide trough 13. The material guide trough 13 is provided with a conveying channel 131 for guiding and conveying the material 200. The outlet of the material distribution hopper 14 is located on the material guide trough 13, and it separates the material 200 and conveys it sequentially to the material guide trough 13. The pusher cylinder 11 is located at the front end of the material guide trough 13. The pusher rod of the pusher cylinder 11 can extend into the conveying channel 131 and push the material 200 in the conveying channel 131 from front to back along the conveying channel 131 for a preset stroke, so that the material 200 is sequentially conveyed to the grinding position. The control mechanism 40 immediately controls the material distribution hopper 14 to stop operating when it receives the fault signal.

[0037] Specifically, the feeding hopper 14 includes a feeding hopper 141 capable of loading a plurality of processed materials 200, a side cylinder, and a side material-pushing block 143. The side material-pushing block 143 is rotatably mounted on the side of the feeding hopper 141 around a first rotating shaft 144 and extends into the feeding hopper 141. The side cylinder drives the side material-pushing block 143 to rotate around the first rotating shaft 144 to agitate the materials 200 in the feeding hopper 141, so that the materials 200 are sequentially output from the outlet of the feeding hopper 141 along the feeding hopper 141.

[0038] Preferably, the fault monitoring mechanism 30 and the control mechanism 40 are integrated into the unloading mechanism 20, and the control mechanism 40 further controls the unloading mechanism 20 to stop operating based on the output fault signal. By controlling the unloading mechanism 20 and the feeding mechanism 10's pusher cylinder 11 to stop operating simultaneously through the same mechanism, the continuity between the loading and unloading mechanisms 20 is further ensured.

[0039] refer to Figures 1 to 3When the present invention is in operation, the operator confirms that there is material 200 in the feeding hopper 141 and that the pushing cylinder 11 is in the initial position. The operator presses the start button, and the feeding hopper 141 begins to vibrate. The grinding wheel mechanism 50 starts working, and the side material-pushing block 143 pushes the material to prevent blockage and to move the material within the feeding hopper 141. The material then falls from the outlet of the feeding hopper 141 to the initial position of the material guide trough 13. The timer starts, and the control mechanism 40 controls the pushing cylinder 11 to push the material: the pushing cylinder 11 pushes the material 200 along the conveying channel 131 of the material guide trough 13. The material 200 moves along the conveying channel 131 from the initial position... When the material is pushed to the first position, the first pushing sensor 121 generates a pushing signal after the pushing cylinder 11 pushes the material into place. As the feeding mechanism 10 continues to operate, the material 200 is pushed forward along the conveying channel 131 until the material contacts the guide wheel of the grinding wheel mechanism 50 and is pushed into the grinding wheel of the grinding wheel mechanism for grinding under the action of the guide wheel. After the time recorded by the timer reaches the preset time, the control mechanism 40 controls the pushing cylinder 11 to reset: the pushing cylinder 11 resets along the conveying channel 131 of the material guide groove 13 until the pushing cylinder 11 is reset to the initial position, and another material 200 falls into the initial position. After the pusher cylinder 11 resets to its position, the second pusher sensor generates a reset signal. Based on this signal, the control mechanism 40 controls the pusher cylinder 11 to push the material. The second material 200 is pushed to the first position, and together with the first material, they move forward end-to-end. After being ground in the grinding wheel mechanism 50, the material 200 continues to move forward under the guidance of the pusher cylinder 11 and the guide wheel into the unloading mechanism 20. The unloading mechanism 20 then conveys the ground material 200 out.

[0040] When a grinding machine malfunction occurs (including a fault in the feeding mechanism, an emergency grinding malfunction, or a fault in the unloading mechanism), a fault signal is generated. The control mechanism 40 controls the material distribution hopper 14 to stop operating based on the fault signal, and determines the current stroke position of the pusher cylinder 11 (including the reset stroke from the first position to the initial position, the push stroke from the initial position to the first position, and the reset and push positions) based on the reset position signal and the push position signal. When the cylinder is in the reset stroke, it waits for the reset position signal. When the reset position signal is received, it immediately controls the pusher cylinder 11 to stop operating based on the reset position signal. When the cylinder is in the reset position (in the initial position), it directly controls the pusher cylinder 11 to stop working. When the cylinder is in the push position (in the first position), it controls the pusher cylinder 11 to reset and waits for the reset position signal. When the reset position signal is received, it immediately controls the pusher cylinder 11 to stop operating based on the reset position signal.

[0041] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A centerless grinding machine loading and unloading linkage control system, characterized in that: include: The feeding mechanism includes a pushing cylinder and a pushing sensor. The pushing cylinder reciprocates between a first position and an initial position and pushes the material at the initial position to the first position so that the material is conveyed to the grinding position. The pushing sensor detects the stroke position of the pushing cylinder and outputs a stroke detection signal. The feeding mechanism conveys the ground material from the grinding station. The fault monitoring mechanism outputs a fault signal when the centerless grinder malfunctions, including an emergency stop signal for abnormal material discharge when the unloading mechanism malfunctions. The control mechanism receives the fault signal and the stroke detection signal in real time. When the fault signal is received, the stroke detection signal determines the stroke position of the pusher cylinder. When the pusher cylinder returns to the initial position, the control mechanism stops the pusher cylinder. When the pusher cylinder does not return to the initial position, the control mechanism continues to move back and forth until the pusher cylinder returns to the initial position and the control mechanism stops the pusher cylinder. After receiving the fault signal, the control mechanism determines the stroke position of the pusher cylinder based on the stroke detection signal, and determines whether the pusher cylinder is in the push stroke from the initial position to the first position or has pushed the material to the correct position. If not, it waits for the pusher cylinder to reset to the correct position and then controls the pusher cylinder to stop. If yes, it waits for the pusher cylinder to move to the first position and then controls the pusher cylinder to reset, and waits for the pusher cylinder to reset to the correct position and then controls the pusher cylinder to stop.

2. The centerless grinding machine loading and unloading linkage control system as described in claim 1, characterized in that: The stroke detection signal includes a push-in signal and a reset signal. The push sensor outputs a push-in signal when the push cylinder pushes the material into place, and outputs a reset signal when the push cylinder resets to place. When the control mechanism receives the fault signal, it waits while the push cylinder is in the reset stroke from the first position to the initial position and controls the push cylinder to stop working when it receives the reset signal; it controls the push cylinder to stop working when it is in the reset position; it waits for the push-in signal while the push cylinder is in the push stroke from the initial position to the first position and controls the push cylinder to reset when it receives the push-in signal and controls the push cylinder to stop working when it receives the reset signal; it controls the push cylinder to reset when it is in the push-in position and controls the push cylinder to stop working when it receives the reset signal.

3. The centerless grinding machine loading and unloading linkage control system as described in claim 1, characterized in that: The stroke detection signal includes a push-to-position signal, and the push-to-position sensor includes a first push-to-position sensor. The first push-to-position sensor outputs a push-to-position signal when the push-to-position cylinder pushes the material to the desired position. The control mechanism determines the stroke position of the push-to-position cylinder based on the time interval between the acquisition time of the push-to-position signal and the current time; or... The stroke detection signal includes a reset position signal, and the pusher sensor includes a second pusher sensor. The second pusher sensor outputs a reset position signal when the pusher cylinder is reset to the correct position. The control mechanism determines the stroke position of the pusher cylinder based on the time interval between the acquisition time of the reset position signal and the current time; or... The material pushing sensor includes a first material pushing sensor and a second material pushing sensor. The first material pushing sensor outputs a material pushing position signal when the material pushing cylinder pushes the material into position, and the second material pushing sensor outputs a reset position signal when the material pushing cylinder resets into position. The control mechanism receives the material pushing position signal and the reset position signal in real time, and determines the stroke position of the material pushing cylinder according to the order in which the material pushing position signal and the reset position signal arrive.

4. The centerless grinding machine loading and unloading linkage control system as described in claim 1, characterized in that: The fault signals also include one or more of the following: an emergency stop signal for abnormal feeding when the feeding mechanism malfunctions, and an emergency stop signal for abnormal grinding when an emergency grinding malfunctions.

5. The centerless grinding machine loading and unloading linkage control system as described in claim 2, characterized in that: The control mechanism starts to determine whether the time interval between the acquisition time of the material push signal and the current time is greater than the warning duration based on the fault signal. If the time interval is greater than the warning duration, the control mechanism stops the feeding mechanism.

6. The centerless grinding machine loading and unloading linkage control system as described in claim 1, characterized in that: The feeding mechanism also includes a material distribution hopper and a material guide trough. The material guide trough is provided with a conveying channel for guiding and conveying materials. The outlet of the material distribution hopper is located on the material guide trough, and it separates the materials and conveys them sequentially to the material guide trough. The pusher cylinder is located at the front end of the material guide trough. The pusher rod of the pusher cylinder can extend into the conveying channel and push the materials in the conveying channel from front to back along the conveying channel for a preset stroke, so that the materials are sequentially conveyed to the grinding position. When the control mechanism receives the fault signal, it controls the material distribution hopper to stop operating.

7. The centerless grinding machine loading and unloading linkage control system as described in claim 6, characterized in that: The feeding hopper includes a feeding hopper capable of loading several processing materials, a side cylinder, and a side material-pushing block. The side material-pushing block is rotatably mounted on the side of the feeding hopper around a first rotating shaft and extends into the feeding hopper. The side cylinder drives the side material-pushing block to rotate around the first rotating shaft to agitate the materials in the feeding hopper, so that the materials are sequentially output from the outlet of the feeding hopper along the feeding hopper.

8. The centerless grinding machine loading and unloading linkage control system as described in claim 1, characterized in that: The fault monitoring mechanism and control mechanism are loaded into the unloading mechanism, and the control mechanism also controls the unloading mechanism to stop operating based on the output fault signal.

9. A centerless grinding machine with linked loading and unloading, characterized in that: It includes a loading and unloading linkage control system and a grinding wheel mechanism. The grinding wheel mechanism grinds the material at the grinding position. The loading and unloading linkage control system is the loading and unloading linkage control system for a centerless grinder as described in any one of claims 1-8.

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