A latch detection device and method for a film box cleaning machine

Abstract

A latch detection device and method for a film box cleaning machine is used to detect whether the latches on the loading racks carrying multiple film boxes are fully inserted into the rotatable positioning rack inside the machine to achieve fixation, including: a PNP type capacitive sensor installed on the machine, the capacitive sensor is used to detect whether the latches on the loading racks passing under it one by one during the rotation of the positioning rack driving the multiple loading racks are fully inserted into the positioning rack; an intermediate relay connected to the capacitive sensor signal line, the intermediate relay is used to receive the capacitive sensor signal and close the circuit when the signal is received. The beneficial effect of the present invention is that through the combination of the capacitive sensor and the intermediate relay, it is ensured that all latches are correctly installed before the equipment is started, effectively preventing damage to the film box and the equipment due to loose latches. In addition, the automatic execution of the self-checking program and the timed self-checking function further reduce the failure rate of the equipment.

Description

Technical Field

[0001] The present invention relates to the field of semiconductor technology, and in particular to a latch detection device and method for a film box cleaning machine. Background Art

[0002] In the semiconductor manufacturing process, the cassette cleaning machine is a key equipment used to clean the cassette to ensure the cleanliness and quality of semiconductor wafers during processing. The existing 12-inch cassette cleaning machine usually includes a positioning frame with a cylindrical cage structure, and a plurality of loading frames for loading cassettes are connected to the positioning frame. A latch is provided on the upper right of each loading frame to fix the loading frame and the positioning frame so that it can run safely and smoothly when the cassette is rotated and dried at high speed.

[0003] However, the existing 12-inch film box cleaning machine has a significant technical defect: the device is manually operated when loading the film box, and there is a possibility that the pin is not inserted into the right position. When the pin is not in place, the centrifugal force will cause the loading frame to separate from the positioning frame during the high-speed rotation of the device and hit the inside of the cleaning machine, causing damage to the film box and the machine, and even causing safety accidents. The uncertainty of operation not only affects the stability and reliability of the equipment, but also increases maintenance costs and safety risks. Summary of the invention

[0004] The present invention aims to solve the above problems existing in the prior art and provides a pin detection device and method for a cassette cleaning machine for detecting whether the pins on a loading rack carrying multiple cassettes are fully inserted into a rotatable positioning rack inside the machine for fixation.

[0005] The present invention solves the technical problem by adopting a technical solution: the latch detection device of the film box cleaning machine is used to detect whether the latches on the loading racks carrying multiple film boxes are fully inserted into the rotatable positioning rack inside the machine to achieve fixation, and comprises:

[0006] A PNP type capacitive sensor installed on the machine platform, the capacitive sensor is used to detect whether the latches on the loading racks passing under the positioning rack one by one are completely inserted into the positioning rack during the rotation of the positioning rack driving the loading racks;

[0007] an intermediate relay connected to the capacitance sensor signal line, the intermediate relay being used to receive the capacitance sensor signal and close the circuit when the signal is received;

[0008] The circuit control module is used to control the self-checking procedure and normal working process of the machine, and is connected to the intermediate relay to receive the signal from the intermediate relay;

[0009] When all the latches are in the correct position and the self-check procedure is passed, the machine is allowed to continue to work normally; when it is detected that any of the latches is in an incorrect position, the machine will alarm and stop the positioning frame from rotating.

[0010] Preferably, the positioning frame is rotatably arranged at the center of the machine platform, and the positioning frame is a cylindrical cage structure, a connecting piece is arranged on the positioning frame, a positioning bracket for placing the film box is arranged on the loading frame, and the latch and the connecting piece on the loading frame are detachably connected.

[0011] Preferably, one end of the plug has an external thread, the connector is provided with a connecting hole, the connecting hole is provided with an internal thread, the external thread is connected to the internal thread, so that one end of the plug extends out of the connector;

[0012] The positioning frame drives the loading frame to rotate under the capacitive sensor. When one end of all the pins extend from the corresponding connecting parts, the capacitive sensor can detect this state and the self-test program passes. When the positioning frame rotates to the preset position and one end of the corresponding pin does not extend from the connecting part, the machine will alarm and stop the positioning frame from rotating.

[0013] Preferably, at least one pair of elastic buckles are arranged on the circumference of the latch, and an annular groove is arranged on the upper end of the connecting piece, and the latch passes through the connecting piece, so that the buckle tightened on the circumference of the latch automatically pops out and movably engages with the annular groove;

[0014] The positioning frame drives the loading frame to rotate under the capacitive sensor. When all the buckles are engaged with the corresponding annular slots, the capacitive sensor can detect this state and the self-test program passes. When the positioning frame rotates to the preset position and any buckle is not engaged with the corresponding annular slot, the machine will alarm and stop the positioning frame from rotating.

[0015] Preferably, the latch detection device also includes a visual sensor element and a status indicator light, both of which are connected to the circuit control module. The visual sensor element is used to perform re-detection after the capacitive sensor detects whether the latch is successfully connected to the positioning frame, and the status indicator light is used to display the status of the self-test program.

[0016] The present invention solves the above technical problem and further provides a latch detection method for a film box cleaning machine, comprising the latch detection device for the film box cleaning machine described above, and the detection method further comprises:

[0017] The self-checking program is used to control the positioning frame to drive the plurality of loading frames loaded therein to rotate slowly after the machine is started, so that the latches on the plurality of loading frames pass under the capacitive sensors one by one for position detection;

[0018] A remote monitoring module connected to the visual sensor element monitors the self-check process in real time through the network to ensure that all the pins are correctly connected. The remote monitoring module can record and replay the self-check process for later analysis;

[0019] When all the latches are in the correct position, the self-check program passes and the machine is allowed to continue to work normally; if any latch is detected to be in an incorrect position, the machine will alarm and stop running the menu program.

[0020] Preferably, the steps include:

[0021] S1: Fix the latch on the loading rack to the positioning rack and start the cleaning machine;

[0022] S2: The machine starts the self-checking procedure, and the positioning frame drives the loading frame to rotate slowly and synchronously according to the predetermined procedure; if it is found that the latch on the loading frame is not installed correctly, resulting in the loading frame being unable to rotate synchronously with the positioning frame, the machine returns to S1, reconfirms the installation of the loading frame and restarts the self-checking procedure;

[0023] S3: The pins on each loading rack move with the positioning rack in the machine platform, and pass under the capacitive sensors fixed on the machine platform one by one, and the capacitive sensors detect whether the pins are fully inserted into place; if the positioning rack rotates to a preset position relative to the machine platform, and it is found that any one of the pins does not extend from the corresponding connecting piece according to the rotation position of the positioning rack, or if it is found that the buckle of any one of the pins is not engaged with the annular groove after being inserted into the connecting piece, the self-checking procedure fails and returns to S1;

[0024] S4: If the pin position is correct, the capacitive sensor sends a signal to the intermediate relay; if the capacitive sensor fails to send a signal or the signal transmission is interrupted, return to S3 to check the working status of the capacitive sensor and the connection of the signal line;

[0025] S5: The intermediate relay is closed after receiving the signal, so that the circuit control module is connected; if the intermediate relay fails to respond to the capacitance sensor signal, return to S4 to check the relay working state and circuit connection;

[0026] S6: When all the latches are in the correct position, the self-check procedure is passed; if it is found that any latch is not connected to the corresponding connector, the machine will sound an alarm and return to S1;

[0027] S7: After the latch position detection is completed, the cage locking device signal is obtained, and the system further detects whether the loading frame and the positioning frame are locked in place; if so, the self-test program passes; if not, return to S1.

[0028] Preferably, before the self-check procedure is passed, a preparatory process is also included, and the preparatory process includes:

[0029] Obtain the signal transmission information of the cage locking device. If the cage locking device is locked in place, the cage locking device detection circuit sends a signal to the intermediate relay; if the cage locking device fails to lock in place, the detection circuit fails to send a signal or the signal transmission is interrupted, then check the working status of the cage locking device detection circuit and the connection of the signal line;

[0030] For the cage locking device relay response detection, the intermediate relay is closed after receiving the signal of the cage locking device detection circuit, so that the circuit control module is further connected; if the intermediate relay fails to respond to the signal of the cage locking device detection circuit, the relay working state and circuit connection are checked.

[0031] Preferably, the method further comprises:

[0032] Memory, used to store computer programs;

[0033] At least one processor, configured to execute the computer program to implement the latch detection method as described above;

[0034] The method further comprises a timer module for regularly executing a self-checking program, so as to ensure that the device performs self-checking regularly to ensure the stability of long-term operation.

[0035] Preferably, the method further comprises a multi-level authority management system, so that operators at different levels can access corresponding functions according to their own authority.

[0036] The beneficial effect of the present invention is that, through the combination of the capacitive sensor and the intermediate relay, all the latches are ensured to be correctly installed before the device is started, effectively preventing the damage of the film box and the device caused by the loosening of the latches. In addition, the automatic execution of the self-checking program and the timed self-checking function further reduce the failure rate of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the structure of the loading frame and positioning frame inside the machine;

[0038] Figure 2 for Figure 1 A magnified view of the structure at center A;

[0039] Figure 3 is a schematic diagram of the structure of the loading rack;

[0040] Figure 4 It is a schematic diagram of the structure of the positioning frame and the positioning bracket;

[0041] Figure 5 It is a schematic diagram of the structure of a latch with external threads and a connecting piece;

[0042] Figure 6It is a schematic diagram of the structure of a latch with a buckle and a connector.

[0043] Explanation of the accompanying drawings: 1. Machine; 2. Loading frame; 3. Latch; 4. Positioning frame; 5. Capacitive sensor; 6. Intermediate relay; 7. Circuit control module; 8. Connector; 9. Positioning bracket; 10. External thread; 11. Internal thread; 12. Buckle; 13. Annular groove; 14. Visual sensor element. DETAILED DESCRIPTION

[0044] The present invention will be further described below in conjunction with the accompanying drawings:

[0045] Embodiment 1

[0046] Reference Figures 1 to 6 As shown: a latch detection device of a film box cleaning machine, used for detecting whether the latches 3 on the loading racks 2 carrying multiple film boxes are completely inserted into the rotatable positioning rack 4 inside the machine 1 to achieve fixation, including: a PNP type capacitive sensor 5 installed on the machine 1, the capacitive sensor 5 is used to detect whether the latches 3 on the loading racks 2 passing under it one by one during the rotation of the positioning rack 4 driving the multiple loading racks 2 are completely inserted into the positioning rack 4; an intermediate relay 6 connected to the signal line of the capacitive sensor 5, the intermediate relay 6 is used to receive the signal of the capacitive sensor 5 and close the circuit when the signal is received; a circuit control module 7 is used to control the self-check procedure and normal working process of the machine 1, and is connected to the intermediate relay 6 to receive the signal from the intermediate relay 6; when all the latches 3 are in the correct position and the self-check procedure is passed, the machine 1 is allowed to continue to work normally; when it is detected that any one of the latches 3 is in the incorrect position, the machine 1 will alarm and stop the positioning rack 4 from rotating.

[0047] The capacitive sensor 5 is installed at a fixed position above the machine 1, and is used to detect whether the pins 3 on the loading racks 2 passing under the positioning rack 4 one by one are fully inserted into the positioning rack 4 during the rotation of the positioning rack 4. In this embodiment, the intermediate relay 6 is connected to the signal line of the capacitive sensor 5 to receive the signal of the capacitive sensor 5. The capacitive sensor 5 detects that the pin 3 is fully inserted, and the intermediate relay 6 receives the signal and closes the circuit, indicating that the position of the pin 3 is correct. The capacitive sensor 5 can generate a signal when the pin 3 is fully inserted, and judge whether the pin 3 is fully inserted by detecting the change in capacitance between the pin 3 and the sensor to ensure that the position of the pin 3 is correct. The intermediate relay 6 acts as an intermediary for signal transmission to ensure that the detection result of the capacitive sensor 5 can be accurately transmitted to the circuit control module 7. When the capacitive sensor 5 detects that the pin 3 is fully inserted, it sends a signal to the intermediate relay 6, and the intermediate relay 6 closes the circuit and transmits the signal to the circuit control module 7. The circuit control module 7 is used to control the self-test program and normal working process of the machine 1, and is connected to the intermediate relay 6 to receive the signal from the intermediate relay 6. The circuit control module 7 is responsible for coordinating the entire detection and control process. After the machine 1 is started, a self-check procedure is first performed. By slowly rotating the positioning frame 4, the pins 3 on each loading frame 2 pass under the capacitive sensor 5 one by one for position detection. The pins 3 are fully inserted, the capacitance value reaches the preset value, and the sensor generates a signal. The self-check procedure ensures that all the pins 3 are correctly inserted before allowing the machine 1 to continue to work normally. When the self-check procedure passes, the circuit control module 7 allows the machine 1 to enter the normal working process and perform the film box cleaning operation. If the positioning frame 4 rotates to the preset position relative to the machine 1 without signal induction, the position of the pin 3 at this position is incorrect. When any pin 3 is detected to be in an incorrect position, the circuit control module 7 will trigger an alarm signal and stop the positioning frame 4 from rotating to prevent the equipment from running when the pin 3 is not correctly inserted, thereby avoiding safety accidents and equipment damage.

[0048] Specifically, Figures 2 to 4 As shown, the positioning frame 4 is rotatably set at the center position of the machine table 1, and the positioning frame 4 is a cylindrical cage structure. A connecting piece 8 is set on the positioning frame 4, and a positioning bracket 9 for placing the film box is set on the loading frame 2, and the pin 3 on the loading frame 2 and the connecting piece 8 are detachably connected.

[0049] The positioning frame 4 is rotatably arranged at the center of the machine 1. This design ensures that the positioning frame 4 can evenly distribute the load during the rotation process, reduce the influence of the eccentric force, and improve the stability and balance of the equipment. The positioning frame 4 is designed in a cylindrical cage structure. This structure can not only provide sufficient support force, but also effectively accommodate multiple loading frames 2, ensuring that the film box will not shift or fall off during the cleaning process. The positioning frame 4 is provided with multiple connecting pieces 8 for fixing the loading frame 2. These connecting pieces 8 are evenly distributed on the circumference of the positioning frame 4 to ensure that each loading frame 2 can be firmly fixed on the positioning frame 4. The connecting piece 8 is not only used to fix the latch 3, but also plays a role in positioning and guiding, ensuring that the loading frame 2 always maintains the correct posture during the rotation process. The loading frame 2 is provided with a positioning bracket 9 for placing the film box. The design of the positioning bracket 9 ensures that the film box can be firmly placed on the loading frame 2 to prevent displacement or falling during the cleaning process.

[0050] Furthermore, if Figure 2 and Figure 5 As shown, one end of the pin 3 has an external thread 10, and a connecting hole is provided on the connecting piece 8. An internal thread 11 is provided in the connecting hole. The external thread 10 is connected to the internal thread 11, so that one end of the pin 3 extends out from the connecting piece 8; the positioning frame 4 drives the loading frame 2 to rotate under the capacitive sensor 5. When one end of all the pins 3 extends out from the corresponding connecting piece 8, the capacitive sensor 5 can detect this state, and the self-test procedure passes; when the positioning frame 4 rotates to the preset position and one end of the pin 3 at the corresponding position does not extend out from the connecting piece 8, the machine 1 will alarm and stop the positioning frame 4 from rotating.

[0051] One end of the plug 3 is designed with an external thread 10, and the connecting piece 8 has a connecting hole, and the connecting hole has a matching internal thread 11. When the plug 3 is correctly inserted into the connecting piece 8 along the height direction of the machine 1, the external thread 10 and the internal thread 11 engage with each other, so that one end of the plug 3 extends out of the connecting piece 8. This design ensures that the plug 3 can be firmly fixed in the connecting piece 8 after insertion, thereby ensuring a stable connection between the loading frame 2 and the positioning frame 4. When the machine 1 starts and enters the self-test program, the positioning frame 4 will drive the loading frame 2 to rotate slowly. During this process, the pins 3 on each loading frame 2 will pass through the fixed position under the capacitive sensor 5 in turn. The task of the capacitive sensor 5 is to detect whether each pin 3 is fully inserted and extended from the connector 8. When one end of all the pins 3 extends from the corresponding connector 8, the capacitive sensor 5 can detect this state. At this time, the capacitive sensor 5 will send a signal to the intermediate relay 6, the relay will be energized, the circuit will be connected, the self-test program will pass, and the machine 1 can continue to work normally. If the positioning frame 4 rotates to a preset position relative to the machine 1, but one end of the pin 3 at this position is not detected to extend from the connector 8, the capacitive sensor 5 will not be able to detect the existence of the pin 3. In this case, the self-test program will not pass, and the machine 1 will sound an alarm and stop the positioning frame 4 from rotating to prevent potential safety accidents and equipment damage.

[0052] Furthermore, if Figure 2 and Figure 6 As shown, at least one pair of elastic buckles 12 are arranged on the circumference of the latch 3, and a corresponding annular groove 13 is arranged on the connecting piece 8. The latch 3 passes through the connecting piece 8, so that the buckles 12 tightened on the circumference of the latch 3 automatically pop out and movably engage with the annular groove 13; the positioning frame 4 drives the loading frame 2 to rotate under the capacitive sensor 5, and when all the buckles 12 are engaged with the corresponding annular grooves 13, the capacitive sensor 5 can detect this state, and the self-test procedure passes; when the positioning frame 4 rotates to the preset position, if any buckle 12 is not engaged with the corresponding annular groove 13, the machine 1 will alarm and stop the rotation of the positioning frame.

[0053] An elastic buckle 12 is arranged on the circumference of the latch 3, and a corresponding annular groove 13 is arranged on the connector 8. When the latch 3 passes through the connector 8, the buckle 12 will be compressed. As the latch 3 is fully inserted, the buckle 12 will automatically pop out and engage with the annular groove 13. This design ensures that the latch 3 can be firmly fixed in the connector 8 after insertion, thereby ensuring a stable connection between the loading rack 2 and the positioning rack 4. When the machine 1 is started and enters the self-test program, the positioning rack 4 will drive the loading rack 2 to rotate slowly. During this process, each latch 3 on the loading rack 2 will pass through the fixed position under the capacitive sensor 5 in turn. The task of the capacitive sensor 5 is to detect the position of each latch 3. Whether the buckle 12 is correctly engaged with the annular groove 13 on the connector 8, when the buckles 12 of all the latches 3 are correctly engaged with the corresponding annular grooves 13, the capacitive sensor 5 can detect this state, at this time, the capacitive sensor 5 will send a signal to the intermediate relay 6, the relay is energized, the circuit is connected, the self-checking procedure is passed, and the machine 1 can continue to work normally. If the positioning frame 4 rotates to a preset position relative to the machine 1, the buckle 12 of the latch 3 at this position is not correctly engaged with the corresponding annular groove 13, and the capacitive sensor 5 will not be able to detect the existence of the latch 3. In this case, the self-checking procedure will not pass, and the machine 1 will sound an alarm and stop the rotation of the positioning frame 4 to prevent potential safety accidents and equipment damage.

[0054] Specifically, Figure 1 and Figure 2 As shown, the detection device for the latch 3 also includes a status indicator light and a visual sensor element 14. Both the status indicator light and the visual sensor element 14 are connected to the circuit control module 7. The status indicator light is used to display the status of the self-test program, and the visual sensor element 14 is used to detect whether the latch 3 is connected to the positioning frame 4.

[0055] The detection device for the plug 3 also includes a status indicator light, which is connected to the circuit control module 7. The status indicator light is used to display the status of the self-test program, helping the operator to intuitively understand the results of the self-test process. The detection device for the plug 3 is also equipped with a visual sensor element 14, which is also connected to the circuit control module 7. The visual sensor element 14 is used to further detect whether the plug 3 is connected to the positioning frame 4, providing additional safety protection. Through image recognition technology, the connection status of the plug 3 and the connector 8 is detected. The visual sensor element 14 is connected to the remote monitoring module, and the self-test process is monitored in real time through the network. The self-test process is recorded and replayed, which is convenient for subsequent analysis and troubleshooting, and also avoids the occurrence of situations due to special reasons (the plug 3 is indeed connected to the connector 8, but the capacitive sensor 5 is damaged and not detected).

[0056] Embodiment 2

[0057] like Figures 1 to 6As shown, the present invention also provides a method for detecting the latch 3 of a film box cleaning machine, including a device for detecting the latch 3 of a film box cleaning machine in the above-mentioned embodiment 1, and the detection method also includes: a self-test program, which is used to control the positioning frame 4 to drive the plurality of loading frames 2 loaded therein to rotate slowly after the machine 1 is started, so that the latches 3 on the plurality of loading frames 2 pass under the capacitive sensor 5 one by one for position detection; a remote monitoring module, which is connected to the visual sensor element 14 and monitors the self-test process in real time through the network to ensure that all the latches 3 are correctly connected, and the remote monitoring module can record and replay the self-test process for subsequent analysis; when all the latches 3 are in the correct position, the self-test program passes, allowing the machine 1 to continue to work normally; when it is detected that any one of the latches 3 is in the incorrect position, the machine 1 will alarm and stop running the menu program.

[0058] The remote monitoring module is connected to the visual sensor element 14, and the self-checking process is monitored in real time through the network. The visual sensor element 14 further detects the connection status of the latch 3 and the positioning frame 4 through image recognition technology to ensure that all the latches 3 are correctly connected. The remote monitoring module can record the detailed data of the self-checking process and support the playback function. This function is convenient for post-analysis and troubleshooting to ensure the long-term stable operation of the equipment. After the machine 1 is started, the positioning frame 4 drives the loading frame 2 to rotate slowly, so that the latches 3 on the loading frame 2 pass under the capacitive sensor 5 one by one. The capacitive sensor 5 detects each Whether the pin 3 is fully inserted and fixed on the positioning frame 4. If all the pins 3 are correctly inserted, the capacitive sensor 5 sends a signal to the intermediate relay 6, the relay is closed, the circuit is connected, the self-test program passes, and the machine 1 continues to work normally. If any pin 3 is not correctly inserted, the capacitive sensor 5 cannot detect the pin 3, the self-test program fails, the machine 1 issues an alarm and stops running the menu program. The remote monitoring module monitors the self-test process in real time through the visual sensor element 14, records and replays the self-test data, ensures that all the pins 3 are correctly connected, and provides additional safety protection.

[0059] Specifically, the following steps are included: S1: fix the latch 3 on the loading rack 2 on the positioning rack 4, and start the cleaning machine; S2: the machine 1 starts the self-checking program, and the positioning rack 4 drives the loading rack 2 to rotate slowly and synchronously according to the predetermined program; if it is found that the latch 3 on the loading rack 2 is not installed correctly, resulting in the loading rack 2 being unable to rotate synchronously with the positioning rack 4, then return to S1, reconfirm the installation of the loading rack 2 and restart the self-checking program; S3: the latch 3 on each loading rack 2 moves with the positioning rack 4 in the machine 1, and passes under the capacitive sensor 5 fixedly installed on the machine 1 one by one, and the capacitive sensor 5 detects whether the latch 3 is fully inserted into place; if the positioning rack 4 rotates to a preset position relative to the machine 1, and it is found that any one of the latches 3 does not extend from the corresponding connecting piece 8 or if it is found that the buckle 12 of any one of the latches 3 is not engaged with the annular groove 13 after being inserted into the connecting piece 8, then the self-checking program fails and returns to S3. 1; S4: If the position of the pin 3 is correct, the capacitance sensor 5 sends a signal to the intermediate relay 6; if the capacitance sensor 5 fails to send a signal or the signal transmission is interrupted, it returns to S3 to check the working state of the capacitance sensor 5 and the connection of the signal line; S5: After receiving the signal, the intermediate relay 6 is closed, so that the circuit control module 7 is connected; if the intermediate relay 6 fails to respond to the capacitance sensor 5 signal, it returns to S4 to check the relay working state and the circuit connection; S6: When all the pins 3 are in the correct position, the self-check program passes; if it is found that any pin 3 is not connected to the corresponding connector 8, the machine 1 issues an alarm and returns to S1; S7: After the position detection of the pin 3 is completed, the cage locking device signal is obtained, and the system further detects whether the loading frame 2 and the positioning frame 4 are locked in place; if so, the self-check program passes; if not, it returns to S1.

[0060] Further, S1: fix the latch 3 and start the cleaning machine, fix the latch 3 on the loading rack 2 on the positioning rack 4, start the film box cleaning machine, and prepare to enter the self-test program. S2: start the self-test program, the machine 1 starts the self-test program, the positioning rack 4 drives the loading rack 2 to rotate slowly and synchronously according to the predetermined program. During the self-test process, if it is found that the latch 3 on the loading rack 2 is not installed correctly, resulting in the loading rack 2 being unable to rotate synchronously with the positioning rack 4, then return to S1, reconfirm the installation of the loading rack 2 and restart the self-test program. S3: latch 3 position detection, each latch 3 on the loading rack 2 moves with the positioning rack 4 in the machine 1, and passes under the capacitive sensor 5 fixedly installed on the machine 1 one by one. The capacitive sensor 5 detects whether the latch 3 is fully inserted in place. If any latch 3 does not extend from the corresponding connector 8 or the latch 3 is inserted into the connector 8, the buckle 12 is not engaged with the annular groove 13, then the self-test program fails and returns to S1. S4: Signal transmission. If the position of the latch 3 is correct, the capacitive sensor 5 sends a signal to the intermediate relay 6. If the capacitive sensor 5 fails to send a signal or the signal transmission is interrupted, it returns to S3 to check the working state of the capacitive sensor 5 and the connection of the signal line. S5: Relay response. The intermediate relay 6 closes after receiving the signal, so that the circuit control module 7 is connected. If the intermediate relay 6 fails to respond to the capacitive sensor 5 signal, it returns to S4 to check the working state of the relay and the circuit connection. S6: Self-check program passes. When all the latches 3 are in the correct position, the self-check program passes. If it is found that any latch 3 is not connected to the corresponding connector 8, the machine 1 issues an alarm and returns to S1. S7: Locking device detection. After the position detection of the latch 3 is completed, the cage locking device signal is obtained. The system further detects whether the loading rack 2 and the positioning rack 4 are locked in place. If so, the self-check program passes. If not, it returns to S1.

[0061] Specifically, before the self-test procedure is passed, a preparatory process is also included, which includes: obtaining the signal transmission information of the cage locking device, if the cage locking device is locked in place, the cage locking device detection circuit sends a signal to the intermediate relay 6; if the cage locking device fails to be locked in place, the detection circuit fails to send a signal or the signal transmission is interrupted, then the working state of the cage locking device detection circuit and the connection of the signal line are checked; the cage locking device relay response detection is performed, and the intermediate relay 6 is closed after receiving the signal of the cage locking device detection circuit, so that the circuit control module 7 is further connected; if the intermediate relay 6 fails to respond to the signal of the cage locking device detection circuit, then the relay working state and the circuit connection are checked.

[0062] Fix the latch 3 and start the cleaning machine, fix the latch 3 on the loading rack 2 on the positioning rack 4, start the film box cleaning machine, prepare to enter the self-test program, start the self-test program, the machine 1 starts the self-test program, the positioning rack 4 drives the loading rack 2 to rotate slowly and synchronously according to the predetermined program. During the self-test process, if it is found that the latch 3 on the loading rack 2 is not installed correctly, resulting in the loading rack 2 being unable to rotate synchronously with the positioning rack 4, then return to S1, reconfirm the installation status of the loading rack 2 and restart the self-test program, obtain the cage locking device signal, obtain the cage locking device signal transmission information, if the cage locking device When the cage is locked in place, the cage locking device detection circuit sends a signal to the intermediate relay 6. If the cage locking device fails to be locked in place, the detection circuit fails to send a signal or the signal transmission is interrupted, then the working state of the cage locking device detection circuit and the connection of the signal line are checked, and the relay responds to the detection. The cage locking device relay responds to the detection. After the intermediate relay 6 receives the signal from the cage locking device detection circuit, it closes, so that the circuit control module 7 is further connected. If the intermediate relay 6 fails to respond to the signal from the cage locking device detection circuit, then the relay working state and circuit connection are checked.

[0063] Specifically, the method also includes: a memory for storing computer programs; at least one processor for executing computer programs to implement the above-mentioned pin 3 detection method; the method also includes a timer module for regularly executing a self-check program to ensure that the device performs regular self-checks to ensure long-term operational stability.

[0064] At least one processor is used to execute the computer program stored in the memory to implement the above-mentioned pin 3 detection method. The processor is responsible for controlling the execution of the entire self-test program, including starting the self-test, signal processing, relay control, alarm processing, etc. The processor is also responsible for processing the data of the remote monitoring module to ensure real-time monitoring and recording of the self-test process. Timer module: used to execute the self-test program at a fixed time to ensure that the equipment performs self-tests regularly to ensure long-term operation stability. The timer module can set a fixed period (such as daily, weekly or monthly) to automatically start the self-test program. The timer module ensures that even after a long period of operation, the device can regularly perform self-tests, promptly discover and handle potential problems, thereby ensuring long-term stable operation of the equipment.

[0065] Specifically, the method also includes a multi-level authority management system, so that operators at different levels can access corresponding functions according to their own authority.

[0066] The multi-level authority management system enables operators at different levels to access corresponding functions according to their own authority, so that operators at different levels have different operating authorities.

[0067] Certain words are used in the specification and claims of the present invention to refer to specific products. It should be understood by those skilled in the art that manufacturers may refer to the same component by different names. It is not intended to distinguish between components that have the same function but different names. In the following specification and patent scope, the words "comprise", "have" and "include" are open-ended words and should be interpreted as "including but not limited to...".

[0068] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A latch detection method for a film box cleaning machine, characterized in that: The detection method uses a latch detection device of a film box cleaning machine to detect whether the latches on a loading frame carrying multiple film boxes are fully inserted into a rotatable positioning frame inside the machine to achieve fixation. The latch detection device of the film box cleaning machine includes: A PNP type capacitive sensor installed on the machine platform, the capacitive sensor is used to detect whether the latches on the loading racks passing under the positioning rack one by one are completely inserted into the positioning rack during the rotation of the positioning rack driving the loading racks; an intermediate relay connected to the capacitance sensor signal line, the intermediate relay being used to receive the capacitance sensor signal and close the circuit when the signal is received; The circuit control module is used to control the self-checking procedure and normal working process of the machine, and is connected to the intermediate relay to receive the signal from the intermediate relay; When all the latches are in the correct position and the self-check procedure is passed, the machine is allowed to continue to work normally; when it is detected that any of the latches is in an incorrect position, the machine will alarm and stop the rotation of the positioning frame; The detection method also includes: The self-checking program is used to control the positioning frame to drive the plurality of loading frames loaded therein to rotate slowly after the machine is started, so that the latches on the plurality of loading frames pass under the capacitive sensors one by one for position detection; A remote monitoring module connected to the visual sensor element monitors the self-check process in real time through the network to ensure that all the pins are correctly connected. The remote monitoring module can record and replay the self-check process for later analysis; When all the latches are in the correct position, the self-check procedure is passed, allowing the machine to continue to work normally; if any latch is detected to be in an incorrect position, the machine will alarm and stop running the menu program; The latch detection method further comprises the following steps: S1: Fix the latch on the loading rack to the positioning rack and start the cleaning machine; S2: The machine starts the self-checking procedure, and the positioning frame drives the loading frame to rotate slowly and synchronously according to the predetermined procedure; if it is found that the latch on the loading frame is not installed correctly, resulting in the loading frame being unable to rotate synchronously with the positioning frame, the machine returns to S1, reconfirms the installation of the loading frame and restarts the self-checking procedure; S3: The pins on each loading rack move with the positioning rack in the machine platform, and pass under the capacitive sensors fixed on the machine platform one by one, and the capacitive sensors detect whether the pins are fully inserted into place; if the positioning rack rotates to a preset position relative to the machine platform, and it is found that any pin does not extend from the corresponding connector or if it is found that the buckle of any pin is not engaged with the annular slot after being inserted into the connector, the self-check procedure fails and returns to S1; S4: If the pin position is correct, the capacitive sensor sends a signal to the intermediate relay; if the capacitive sensor fails to send a signal or the signal transmission is interrupted, return to S3 to check the working status of the capacitive sensor and the connection of the signal line; S5: The intermediate relay is closed after receiving the signal, so that the circuit control module is connected; if the intermediate relay fails to respond to the capacitance sensor signal, return to S4 to check the relay working state and circuit connection; S6: When all the latches are in the correct position, the self-check procedure is passed; if it is found that any latch is not connected to the corresponding connector, the machine will sound an alarm and return to S1; S7: After the latch position detection is completed, the cage locking device signal is obtained, and the system further detects whether the loading frame and the positioning frame are locked in place; if so, the self-test program passes; if not, return to S1.

2. The latch detection method of the film box cleaning machine according to claim 1, characterized in that: The positioning frame is rotatably arranged at the center of the machine platform, and the positioning frame is a cylindrical cage structure. A connecting piece is arranged on the positioning frame, and a positioning bracket for placing a film box is arranged on the loading frame, and the latch and the connecting piece on the loading frame are detachably connected.

3. The latch detection method of the film box cleaning machine according to claim 2, characterized in that: One end of the plug has an external thread, the connector is provided with a connecting hole, an internal thread is provided in the connecting hole, the external thread is connected to the internal thread, so that one end of the plug extends out of the connecting hole; The positioning frame drives the loading frame to rotate under the capacitive sensor. When one end of all the pins extend from the corresponding connecting holes, the capacitive sensor can detect this state and the self-check procedure passes. When the positioning frame rotates to a preset position and one end of the corresponding pin does not extend from the connecting piece, the machine will alarm and stop the positioning frame from rotating.

4. The latch detection method for a cassette cleaning machine according to claim 2, characterized in that: At least one pair of elastic buckles are arranged on the circumference of the latch, and an annular groove is arranged on the upper end of the connecting piece. The latch passes through the connecting piece, so that the buckle tightened on the circumference of the latch automatically pops out and movably engages with the annular groove; The positioning frame drives the loading frame to rotate under the capacitive sensor. When all the buckles are engaged with the corresponding annular slots, the capacitive sensor can detect this state and the self-test program passes. When the positioning frame rotates to the preset position and any buckle is not engaged with the corresponding annular slot, the machine will alarm and stop the positioning frame from rotating.

5. The latch detection method for a cassette cleaning machine according to claim 1, characterized in that: The latch detection device also includes a visual sensor element and a status indicator light, both of which are connected to the circuit control module. The visual sensor element is used to perform re-detection after the capacitive sensor detects whether the latch is successfully connected to the positioning frame, and the status indicator light is used to display the status of the self-test program.

6. The latch detection method of a film box cleaning machine according to claim 1, characterized in that: Before the self-test procedure is passed, a preparatory process is also included, and the preparatory process includes: Obtain the signal transmission information of the cage locking device. If the cage locking device is locked in place, the cage locking device detection circuit sends a signal to the intermediate relay; if the cage locking device fails to lock in place, the detection circuit fails to send a signal or the signal transmission is interrupted, then check the working status of the cage locking device detection circuit and the connection of the signal line; For the cage locking device relay response detection, the intermediate relay is closed after receiving the signal of the cage locking device detection circuit, so that the circuit control module is further connected; if the intermediate relay fails to respond to the signal of the cage locking device detection circuit, the relay working state and circuit connection are checked.

7. The latch detection method of a film box cleaning machine according to claim 1, characterized in that: The method further includes: Memory, used to store computer programs; at least one processor, configured to execute the computer program to implement the latch detection method according to claim 1; The method further comprises a timer module for regularly executing a self-checking program, so as to ensure that the device performs self-checking regularly to ensure the stability of long-term operation.

8. The latch detection method of a film box cleaning machine according to claim 6, characterized in that: The method also includes a multi-level authority management system, so that operators at different levels can access corresponding functions according to their own authority.

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