Commutator on-off detection mechanism with self-checking function and detection method

Abstract

The application discloses a commutator on-off detection mechanism with self-checking function and a detection method, and the detection mechanism comprises an upper detection module and a lower detection module, the lower detection module is arranged in correspondence with the upper detection module directly below the upper detection module, the upper detection module is provided with upper elastic sheets, the lower detection module is provided with lower elastic sheets, and the number of the upper elastic sheets is equal to that of the lower elastic sheets; the upper detection module can press the commutator to be detected downward to be clamped into the lower detection module, so that the commutator is in contact with the lower elastic sheets of the lower detection module, and the upper detection module is in contact with the commutator after further action. The application has high detection efficiency, does not need to frequently replace accessories, is not prone to the phenomena of missed detection and false detection, and ensures the quality of the commutator.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of commutator detection, and particularly relates to a commutator on-off detection mechanism with self-detection function and a detection method. BACKGROUND

[0002] In the production field of commutators, the number, size and shape (such as large and small grooves, horn grooves, etc.) of the grooves between the commutator segments (i.e. commutator segment grooves) and the internal quality (mica segment residues, groove edge stains, groove edge burrs, etc.) have a very important effect on the quality of the motor, and the groove width size and shape directly affect the motor noise, and the internal quality directly affects the motor insulation performance.

[0003] At present, the detection of commutator segments and segment shafts is mostly manual detection, and the efficiency of manual detection cannot be guaranteed, and the overall quality of the commutator cannot be guaranteed. At present, some are detected by existing detection equipment on the market, and most of the existing detection equipment is detected by the form of a probe. Although the detection speed is accordingly accelerated, the probe is prone to bending during use, the probe needs to be frequently replaced, and the device cannot be self-detected during the detection process. If the detection fails, it is difficult to determine whether the problem is with the product or with the detection equipment itself. SUMMARY

[0004] In order to solve the technical problems existing in the prior art, the application provides a commutator on-off detection mechanism with self-detection function and a detection method. The application can perform device self-detection while positioning the commutator, and detect defects such as hook loss and hook breakage at the bent part of the commutator. The detection efficiency is high, the accessories do not need to be frequently replaced, and the phenomenon of missed detection and false detection is unlikely to occur, thereby ensuring the quality of the commutator.

[0005] The technical solutions adopted by the application to solve the above technical problems are as follows:

[0006] The commutator on-off detection mechanism with self-detection function comprises an upper detection module and a lower detection module, the lower detection module is arranged corresponding to the upper detection module directly below the upper detection module, the upper detection module is provided with upper elastic sheets, the lower detection module is provided with lower elastic sheets, and the number of the upper elastic sheets is equal to that of the lower elastic sheets; the upper detection module can press the commutator to be detected downward to be clamped into the lower detection module, so that the commutator contacts the lower elastic sheets of the lower detection module, and the upper elastic sheets contact the commutator after the upper detection module moves again.

[0007] Preferably, a bottom plate is included, a vertical plate is installed above the bottom plate, and an extension fixing block is installed above the vertical plate; the upper detection module includes a first cylinder, the first cylinder is fixed to the extension fixing block, a top rod is connected to an output shaft of the first cylinder, a bolt is connected to the top rod, the bolt is opposite to the lower detection module, and the bolt can press the commutator to be detected downward to be clamped into the lower detection module under the driving of the first cylinder.

[0008] Preferably, the vertical plate is installed with a vertical guide rail, the guide rail is slidingly matched with a sliding block, the sliding block is connected with a sliding plate, the sliding plate is connected with a mounting seat through a connecting plate, the mounting seat is assembled with the upper spring plate of the upper detection module, and the bolt is movably arranged through the mounting seat.

[0009] Preferably, the mounting seat is in an L shape, one side of the mounting seat forms a rectangular mounting area, and a boss seat is fixed to the rectangular mounting area, the bolt is movably arranged through the boss seat and the rectangular mounting area, a plurality of long grooves are arranged on a circumferential surface of the boss seat, and the upper spring plate is fixed in each long groove.

[0010] Preferably, the sliding plate is installed with a second cylinder, and a movable end of the second cylinder is connected to the bottom plate.

[0011] Preferably, a buffer is arranged below the sliding plate, and the buffer is installed on the bottom plate. The buffer is arranged to limit the position and reduce the speed of the commutator moving downward.

[0012] The upper spring plate of the upper detection module and the bolt at the end of the first cylinder need to be used in cooperation. After the commutator to be detected is placed in the lower detection module, the first cylinder can drive the bolt to extend downward, the commutator is pressed downward, and the commutator is clamped into the limiting stopper of the lower detection module. At the same time, the bottom of the commutator also contacts the lower spring plate. After the contact, the bolt is reset along with the retraction of the first cylinder. The upper spring plate is driven by the second cylinder to move downward to the top of the commutator through the mounting seat and the sliding plate. The upper spring plate contacts the top of the commutator, and the self-checking of the commutator is realized. If the contact between the upper spring plate and the lower spring plate and the commutator is in a conduction state, the self-checking is passed. If the contact between the upper spring plate and the lower spring plate and the commutator is not in the conduction state, the self-checking is not passed. The self-checking step can preliminarily detect whether the commutator has a problem (such as a bend formed at the top of the commutator) and check whether the upper spring plate and the lower spring plate are abraded or deformed. After the self-checking is passed, the on-off detection step is entered.

[0013] Preferably, the lower detection module includes a tool base, the tool base is arranged with a groove, and the lower spring plate is arranged in the groove.

[0014] Preferably, the tool base is installed with a positioning ring, and the positioning ring is arranged with symmetrical limiting stoppers.

[0015] The groove part of the commutator to be detected needs to be in the limit stop sheet when the commutator is put into the positioning ring in the lower detection module, so as to play the role of accurate positioning. The commutator to be detected is pushed by the pin in the upper detection module and is in contact with the lower spring sheet. The commutator after self-checking is subjected to on-off detection in the lower detection module. If no leakage current exists between the contact sheets of the commutator, the detection is passed. If leakage current exists between the contact sheets of the commutator, the detection is failed.

[0016] Preferably, a top rod is arranged below the tool base, the top rod is connected to the output shaft of a motor after penetrating the mounting plate, the motor is fixed to the mounting plate, the mounting plate is connected to a guide column, the guide column is movably inserted into a guide sleeve, and the bottom of the guide column is movably penetrated through a fixing frame, the fixing frame is mounted on the bottom plate; the guide sleeve is fixedly mounted on the fixing frame, the fixing frame is provided with a third cylinder, and the output shaft of the third cylinder is fixedly connected to the mounting plate. The components arranged on the fixing frame are used for ejecting the commutator, after the detection is completed, the third cylinder drives the guide column and the top rod to move upward, the top rod penetrates into the tool base to lift the detected commutator, until the groove of the commutator is higher than the limit stop sheet, and then the commutator is clamped by the translation mechanism and transported to the next station.

[0017] In summary, the detection mechanism detects the commutator through the cooperation of the upper and lower detection modules. The commutator to be detected is put into the lower detection module, the copper sheet of the commutator needs to be in contact with the lower spring sheet, and then the upper detection module moves towards the commutator placed in the lower detection module until the upper spring sheet in the upper detection module is in contact with the copper sheet of the commutator. After the contact, the controller issues a detection instruction to conduct a self-checking between the commutator and the upper and lower spring sheets. After detecting that each copper sheet of the commutator is in conduction with the upper and lower spring sheets, it is considered that the self-checking of the commutator is qualified. If a copper sheet is not in conduction with the spring sheet, it means that the commutator is unqualified or the spring sheet is worn. The self-checked commutator is subjected to on-off detection in the lower detection module. After passing through the two detection procedures, the commutator is considered to be qualified and is transported to the next procedure.

[0018] The application further discloses a commutator on-off detection method based on the above-mentioned commutator on-off detection mechanism.

[0019] 1) The upper feeding mechanism is used to transport the commutators, and the commutators are lifted one by one by the cylinder, and then are clamped and transported by the translation station.

[0020] 2) The commutator lifted by the cylinder in the straight vibration mechanism is grabbed by the gas claw in the translation station, is translated to one side by the driving of the cylinder sliding block after being clamped, and is positioned in the lower detection module in the on-off detection mechanism.

[0021] 3) Self-checking step: the commutator to be detected is placed into the positioning ring in the lower detection module, the groove position of the commutator to be detected is clamped in the limiting baffle of the positioning ring for positioning, the first air cylinder in the upper detection module drives the plug to move downward, the commutator to be detected is pushed downward, the lower edge of the copper sheet of the outer ring of the commutator to be detected is in contact with the lower spring installed on the tool base, the upper spring in the upper detection module is driven to move downward by the mounting seat, the sliding plate and the second air cylinder, until the upper spring in the upper detection module is in contact with the upper edge of the copper sheet of the outer ring of the commutator, after the contact, the upper and lower springs are in conduction with the copper sheet of the commutator for self-checking, if the upper and lower springs are not in the conduction state after contacting the commutator, the self-checking fails, and the self-checking failure is divided into single commutator self-checking failure and continuous multiple commutator self-checking failure, the commutator of the single commutator self-checking failure is removed by the waste removal station through the clamping and placement of the translation station, and the continuous multiple commutator self-checking failure needs to check the equipment failure and whether the upper and lower springs have problems;

[0022] 4) On-off detection step: after the self-checking passes, the upper detection module is reset through the guide rail slider, the lower spring in the lower detection module is in contact with the copper sheet of the commutator again for on-off detection, if no leakage current exists between the contact sheets of the commutator is detected, the detection passes, if the leakage current exists between the contact sheets of the commutator is detected, the detection fails;

[0023] 5) Discharging and feeding step: after the detection is completed, the third air cylinder arranged below the lower detection module drives the ejector rod to insert into the commutator and lift the commutator, and then the commutator is sent to the discharging station by the translation station, and the commutator that does not meet the self-checking or on-off detection requirement is sent to the waste removal station.

[0024] Compared with the prior art, the beneficial technical effects of the present application are:

[0025] The commutator is self-checked and on-off detected by the upper and lower detection modules, the upper and lower bent springs in the detection module are in contact with the copper sheets at the upper and lower edges of the commutator for self-checking, so as to detect whether the commutator is preliminarily qualified and whether the upper and lower springs are worn or damaged, the self-checking step can be performed simultaneously when the upper detection module lifts the commutator to the lower detection module for positioning, the commutator is further on-off detected by the lower detection module after the self-checking passes, two-step detection further ensures the quality of the commutator, and the phenomenon of missed detection and mis-detection is not easy to occur; meanwhile, the detection technology adopted by the present application is more stable and durable than the detection mode of the existing manual and probe, and the detection speed can also be guaranteed, and the accessories do not need to be frequently replaced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure schematic view of the commutator detection device of the present application;

[0027] Figure 2This is a schematic diagram of the commutator continuity detection mechanism with self-testing function of the present invention.

[0028] Figure 3 This is a schematic diagram of the detection module of the present invention;

[0029] Figure 4 This is a schematic diagram of the mating structure between the boss seat and the upper spring piece of the present invention;

[0030] Figure 5 This is a schematic diagram of the detection module of the present invention;

[0031] Figure 6 This is a schematic diagram of the detection module of the present invention (with the positioning ring removed).

[0032] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Translation station; 3. Continuity / discontinuity detection station; 4. Scrap removal station; 5. Unloading station; 11. I-shaped base plate; 12. Buffer; 13. Vertical plate; 14. Guide rail; 15. Slider; 16. Sliding plate; 17. Connecting plate; 18. Extension fixing block; 19. Cylinder; 21. L-shaped mounting base; 22. Fixing frame; 23. Cylinder; 24. Motor; 25. Push rod; 26. Guide sleeve; 27. Guide column; 28. Mounting plate; 31. Upper detection module; 301. Cylinder; 302. Push rod; 303. Pin; 304. Boss seat; 305. Upper spring; 32. Lower detection module; 311. Tooling base; 312. Positioning ring; 313. Lower spring; 314. Limiting stop. Detailed Implementation

[0033] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0034] In this embodiment, the commutator continuity detection mechanism with self-testing function is installed on such a device. Figure 1 The commutator detection device shown is described in the following document. Figure 1 The commutator testing device includes a frame 1. From left to right, a continuity testing station 3, a waste material removal station 4, and a material unloading station 5 are installed on the upper part of the frame 1. Multiple continuity testing stations 3 can be set as needed; in this embodiment, two are set. A translation station 2, cooperating with the aforementioned stations, is located directly in front of the continuity testing station 3, the waste material removal station 4, and the material unloading station 5, used to move the commutator to the corresponding station. The frame 1, translation station 2, waste material removal station 4, and material unloading station 5 involved in this invention all adopt existing technology.

[0035] The aforementioned continuity testing station 3 is equipped with the commutator continuity testing mechanism with self-testing function as described in this embodiment. Its structure is shown in [reference needed]. Figures 2-6The commutator on-off detection mechanism with self-checking function of the embodiment comprises an I-shaped bottom plate 11 and two vertical plates 13 installed above the I-shaped bottom plate 11, the two vertical plates 13 are vertically parallel and symmetrically arranged, the front side of the two vertical plates 13 is provided with an upper detection module 31, a lower detection module 32 is correspondingly arranged below the upper detection module 31, the lower detection module 32 is installed on the top of a fixed frame 22, and the bottom of the fixed frame 22 is fixedly installed above the I-shaped bottom plate 11. The detection mechanism detects the commutator through the cooperation of the upper and lower detection modules 31 and 32, the commutator to be detected is placed in the lower detection module 32, the copper sheet of the commutator needs to be in contact with the lower spring 313, the upper detection module 31 moves towards the direction of the commutator placed in the lower detection module 32, until the upper spring 305 in the upper detection module is in contact with the copper sheet of the commutator, after the contact, the controller issues a detection instruction to conduct self-checking between the commutator and the upper and lower springs 305 and 313, and the commutator is considered to pass the self-checking after each copper sheet of the commutator is detected to be in conduction with the upper and lower springs 305 and 313, if a copper sheet is not in conduction with the spring, it means that the commutator is unqualified or the spring is worn out, the commutator that passes the self-checking is subjected to on-off detection in the lower detection module 32, and the commutator is considered to be qualified after passing the two detection procedures and is conveyed to the next procedure. The controller involved in the application adopts the prior art.

[0036] The front side end surface of the vertical plate 13 is provided with a vertical guide rail 14, and the two guide rails 14 are symmetrically arranged; the top surface of the two vertical plates 13 is connected with an extended fixed block 18, and the extended fixed block 18 protrudes forwardly beyond the vertical plane where the two guide rails 14 are located. Two sliding blocks 15 that can slide up and down are arranged between the two guide rails 14, the two sliding blocks 15 are fixedly connected with a sliding plate 16, the front surface of the sliding plate 16 is provided with a connecting plate 17, the middle part of the connecting plate 17 is connected with an L-shaped mounting seat 21, and the rectangular mounting area of the L-shaped mounting seat 21 is matched with the upper detection module 31. The above components are combined to drive the upper detection module to slide vertically.

[0037] The back surface of the sliding plate 16 is fixedly provided with an air cylinder 19, the movable end of the air cylinder 19 is fixedly connected with the I-shaped bottom plate 11, and a buffer 12 is further arranged below the sliding plate 16, and the buffer 12 is also installed on the I-shaped bottom plate 11. The sliding plate 16 is driven by the air cylinder 19, and the movable end of the air cylinder 19 extends downward to drive the sliding plate 16 and various components installed on the sliding plate 16 to move vertically. The buffer 12 is arranged to limit the position and reduce the speed of the commutator moving downward.

[0038] The upper detection module 31 comprises a cylinder 301, one end of the cylinder 301 is fixed to the extension fixing block 18, the output shaft of the cylinder 301 is connected to a jacking rod 302, the movable end of the jacking rod 302 is connected to a bolt 303, the bolt 303 passes through the boss seat 304 movably and the lower end of the bolt 303 is opposite to the lower detection module 32. The circumferential surface of the boss seat 304 is provided with uniformly distributed long grooves, and each long groove is fixed with a bent upper spring 305, and the boss seat 304 is fixed to the rectangular mounting area of the mounting seat 21. The upper spring 305 of the upper detection module 31 and the bolt at the end of the cylinder 301 need to be used in cooperation. After the commutator to be detected is placed in the lower detection module, the cylinder 301 is started to drive the bolt 303 to extend downward, the commutator is pushed downward, and the commutator is clamped in the limiting baffle 314 of the lower detection module 32, and the bottom of the commutator also contacts the lower spring 313. After the contact, the bolt 303 is reset with the retraction of the cylinder 301, the upper spring 305 is driven to move downward to the top of the commutator through the mounting seat 21, the sliding plate 16 and the cylinder 19, and the upper spring 305 contacts the top of the commutator, so that the self-checking of the commutator is realized. If the contact between the upper spring 305 and the lower spring 313 and the commutator is in a conduction state, the self-checking is passed; if the contact between the upper spring 305 and the lower spring 313 and the commutator is not in a conduction state, the self-checking is not passed. The self-checking step can preliminarily detect whether the commutator has problems (such as the bending formed at the top of the commutator), and can check whether the upper spring 305 and the lower spring 313 are worn or deformed. After the self-checking is passed, the on-off detection step is entered.

[0039] The lower detection module 32 comprises a tool base 311, the top surface of the tool base 311 is provided with recesses, the recesses are provided with bent lower springs 313, the number of the lower springs 313 is the same as that of the upper springs 305, the tool base 311 is provided with a positioning ring 312 above, and the positioning ring 312 is symmetrically provided with limiting baffles 314. When the commutator to be detected is placed in the lower detection module 32, the groove part of the commutator also needs to be in the limiting baffle 314, so as to achieve accurate positioning. The commutator to be detected is pushed by the bolt 303 in the upper detection module 31 to contact the lower spring 313. The commutator after the self-checking is subjected to on-off detection in the lower detection module 32. If no leakage current exists between the contact pieces of the commutator, the detection is passed; if the leakage current exists between the contact pieces of the commutator, the detection is not passed.

[0040] The middle part of the tool base 311 is provided with a top rod 25 below, the top rod 25 is connected with the output shaft of the motor 24, the top rod 25 passes through the mounting plate 28 and is connected with the output shaft of the motor 24, the motor 24 is fixedly connected with the mounting plate 28, the left and right sides of the mounting plate 28 are symmetrically connected with the movable ends of two guide columns 27, the guide columns 27 are vertically movably inserted into the guide sleeves 26, and the bottom of the guide column 27 passes through the bottom of the fixed frame 22, and the fixed frame 22 is installed on the bottom plate 11. The bottom of the guide sleeve 26 is fixedly installed on the fixed frame 22, the lower side of the fixed frame 22 is provided with the air cylinder 23, and the movable end of the air cylinder 23 is connected with the mounting plate 28. The components arranged on the fixed frame 22 are used for ejecting the commutator, after detection is completed, the air cylinder 23 drives the guide column 27 and the top rod 25 to move upwards, the top rod 25 extends into the tool base 311 and lifts the detected commutator, until the commutator groove is higher than and separated from the limiting baffle 314, and then is clamped to the next station by the translation mechanism. In the embodiment, the motor is used for fine adjustment of the placement position of the commutator, when the position of the commutator in the lower detection module 32 needs to be adjusted, the air cylinder 23 drives the top rod 25 to move upwards, after the top rod 25 is inserted into the inner hole of the commutator, the motor 24 drives the top rod 25 to rotate, so that the position of the commutator is finely adjusted, and the hook groove of the commutator can be accurately fixed between the limiting baffle 314.

[0041] The detection steps of the commutator on-off detection mechanism with self-checking function in the embodiment are as follows:

[0042] 1) The feeding step: the commutator to be detected is conveyed by the external straight vibration mechanism, the conveyed commutators are lifted one by one by the air cylinder, and are clamped and conveyed by the translation station;

[0043] 2) The feeding step: the commutator lifted by the air cylinder in the straight vibration mechanism is grabbed by the air claw in the translation station, is translated to one side by the driving of the air cylinder slider after being clamped, and the commutator to be detected is positioned in the lower detection module in the on-off detection mechanism;

[0044] 3) Self-checking step: the commutator to be detected is put into the positioning ring in the lower detection module, the groove position of the commutator to be detected is clamped in the limiting baffle of the positioning ring for positioning, the cylinder 301 in the upper detection module drives the bolt to move downward, pushes the commutator to be detected downward, makes the lower edge of the copper sheet of the outer circle of the commutator to be detected contact the lower spring installed on the tool base, the upper spring in the upper detection module is driven by the mounting seat, sliding plate and cylinder 19 to move downward, until the upper spring in the upper detection module contacts the upper edge of the copper sheet of the outer circle of the commutator, after contact, the upper and lower springs and the copper sheet of the commutator are in conduction for self-checking, if the upper and lower springs and the commutator are not in conduction state, the self-checking fails, the self-checking failure is divided into single commutator self-checking failure and continuous multiple commutator self-checking failure, the commutator of single commutator self-checking failure is placed in the waste removal station by the clamping of the translation station and removed, the continuous multiple commutator self-checking failure needs to check the equipment failure and whether the upper and lower springs exist problems;

[0045] 4) On-off detection step: after the self-checking passes, the upper detection module is reset by the guide rail slider, the lower spring in the lower detection module contacts the copper sheet of the commutator again for on-off detection, if no leakage current exists between the commutator contact sheets is detected, the detection passes, if the leakage current exists between the commutator contact sheets is detected, the detection fails;

[0046] 5) Discharging and feeding step: after the detection is completed, the cylinder 23 arranged below the lower detection module drives the ejector rod to insert into the commutator and lift the commutator, and then the commutator is sent to the discharging station by the translation station, the commutator that fails in the self-checking or on-off detection is sent to the waste removal station.

[0047] The working principle of the commutator continuity testing mechanism with self-testing function in this embodiment is as follows: In this invention, the continuity testing station 3, the translation station 2, the waste removal station 4, and the unloading station 5 form a complete machine. The translation station 2 clamps the commutator into the continuity testing station 3. Specifically, the commutator to be tested is placed into the positioning ring 312 of the lower testing module 32. The groove of the commutator to be tested must also be within the limiting baffle 314 of the positioning ring 312. At this time, the cylinder 301 of the upper testing module 31 can drive the pin to extend downward to 303, pushing the commutator downward until the groove of the commutator is engaged with the bottom of the limiting baffle 314 of the lower testing module 32. At the same time, the bottom of the commutator will also contact the lower spring 313. After contact, the pin 303 is reset as the cylinder 301 retracts. The upper spring 305 is connected to the mounting base, the sliding plate, and the upper spring 305. Driven by cylinder 19, the commutator moves downward to the top, and the upper spring 305 contacts the top of the commutator to perform a self-test for the commutator's continuity. If the upper and lower springs are in a conductive state when in contact with the commutator, the self-test passes. If the upper and lower springs are not in a conductive state when in contact with the commutator, the self-test fails. Commutators that fail the self-test are picked up by translation station 2 and transferred to scrap removal station 4. Commutators that pass the self-test continue to be tested in the lower detection module 32 for continuity testing. The upper spring 305 in the upper detection module 31 is reset by the slider 15 of the guide rail 14. The lower spring 313 in the lower detection module 32 contacts the copper plate of the commutator to perform continuity testing again. If no leakage current is detected between the commutator contact plates, the test passes. If leakage current is detected between the commutator contact plates, the test fails. Commutators that have passed self-inspection and continuity testing will be picked up by the translation station and stacked at the unloading station 5. Commutators that fail the test will enter the scrap kicking station 4.

[0048] The aforementioned translation station 2, waste removal station 4, and unloading station 5 adopt existing technologies.

[0049] This invention discloses a commutator continuity testing mechanism with self-testing function. While locating the commutator, it can perform equipment self-testing and detect defects such as missing or broken hooks at the bending parts of the commutator. It has high testing efficiency, does not require frequent replacement of parts, and is less prone to missed or false detections, thus ensuring the quality of the commutator.

[0050] The embodiments of the present invention have been described in detail above. For those skilled in the art, there may be changes in the specific implementation based on the ideas provided by the present invention, and these changes should also be considered within the scope of protection of the present invention.

Claims

1. A commutator on-off detection mechanism with a self-checking function, characterized in that The upper detection module (31) can press the commutator to be detected downward to be clamped into the lower detection module (32), so that the commutator is in contact with the lower spring (313) of the lower detection module (32), and the upper spring (305) is in contact with the commutator after the upper detection module (31) moves again. The bottom plate (11) is provided above the vertical plate (13), and the extension fixing block (18) is provided above the vertical plate (13); the upper detection module (31) comprises a first air cylinder (301), the first air cylinder (301) is fixed to the extension fixing block (18), the output shaft of the first air cylinder (301) is connected to the jack (302), the jack (302) is connected to the bolt (303), the bolt (303) is opposite to the lower detection module (32), and the bolt (303) can press the commutator to be detected downward to be clamped into the lower detection module (32) under the driving of the first air cylinder (301). The detection mechanism detects the commutator through the cooperation of the upper detection module (31) and the lower detection module (32), the copper sheet of the commutator needs to be in contact with the lower spring (313), the upper detection module (31) moves to the direction of the commutator placed in the lower detection module (32), until the upper spring (305) in the upper detection module is in contact with the copper sheet of the commutator, and the controller issues a detection instruction to detect the conduction self-checking between the commutator and the upper spring (305) and the lower spring (313).

2. The commutator on-off detection mechanism with a self-checking function according to claim 1, characterized by: The vertical plate (13) is provided with a vertical guide rail (14), the guide rail (14) is slidably connected with a sliding block (15), the sliding block (15) is connected with a sliding plate (16), the sliding plate (16) is connected with a mounting seat (21) through a connecting plate (17), the mounting seat (21) is provided with the upper spring (305) of the upper detection module (31); the bolt (303) is movably arranged in the mounting seat (21).

3. The commutator on-off detection mechanism with a self-checking function according to claim 2, characterized by: The mounting seat (21) is in L shape, one side of the mounting seat (21) forms a rectangular mounting area, and the rectangular mounting area is fixed with a boss seat (304); the bolt (303) movably passes through the boss seat (304) and the rectangular mounting area, and a plurality of long grooves are uniformly arranged on the circumferential surface of the boss seat (304), and the upper spring (305) is arranged in each long groove.

4. The commutator on-off detection mechanism with a self-checking function according to claim 2 or 3, characterized in that: The sliding plate (16) is provided with a second air cylinder (19), and the movable end of the second air cylinder (19) is connected to the bottom plate (11).

5. The commutator on-off detection mechanism with a self-checking function according to claim 4, characterized by: The bottom plate (11) is provided with a buffer (12) below the sliding plate (16), and the buffer (12) is mounted on the bottom plate (11).

6. The commutator on-off detection mechanism with a self-checking function according to claim 5, characterized by: The lower detection module (32) comprises a tool base (311), and the tool base (311) is provided with a groove, and the groove is provided with the bent lower spring (313).

7. The commutator on-off detection mechanism with a self-checking function according to claim 6, characterized by: The tool base (311) is provided with a positioning ring (312) having symmetrical limiting flaps (314).

8. The commutator on-off detection mechanism with a self-checking function according to claim 7, characterized by: A top rod (25) is arranged below the tool base (311), the top rod (25) is connected to the output shaft of a motor (24) after penetrating through a mounting plate (28), the motor (24) is fixed to the mounting plate (28), the mounting plate (28) is connected to a guide column (27), the guide column (27) is movably inserted into a guide sleeve (26), and the bottom of the guide column (27) is movably penetrated through a fixing frame (22), the fixing frame (22) is mounted on a bottom plate (11); the guide sleeve (26) is mounted on the fixing frame (22), the fixing frame (22) is provided with a third cylinder (23), and the output shaft of the third cylinder (23) is fixedly connected to the mounting plate (28).

9. A method of detecting the commutator on-off based on the commutator on-off detection mechanism according to claim 8, characterized by The following steps are taken: 1) feeding: conveying the commutator to be detected, and clamping by the translation station; 2) feeding: after the commutator is clamped by the translation station, it is translated to one side, and the commutator to be detected is positioned in the lower detection module of the on-off detection mechanism; 3) self-checking: the commutator to be detected is positioned in the positioning ring of the lower detection module, and the groove position of the commutator to be detected is clamped in the limiting flaps of the positioning ring for positioning, the first cylinder of the upper detection module drives the latch to move downward, pushes the commutator to be detected downward, so that the lower edge of the copper sheet of the outer circle of the commutator to be detected contacts the lower spring installed on the tool base, at the same time, the upper spring in the upper detection module is driven to move downward through the mounting seat, sliding plate and first cylinder, until the upper spring in the upper detection module contacts the upper edge of the copper sheet of the outer circle of the commutator, after contacting, the upper and lower springs and the copper sheet of the commutator are self-checked for conduction; 4) on-off detection: the upper detection module is reset, the lower spring in the lower detection module contacts the copper sheet of the commutator again for on-off detection; 5) discharging and feeding: the third cylinder arranged below the lower detection module drives the top rod to insert into the commutator, and the commutator is lifted up, the commutator is sent into the discharging station by the translation station, and the commutator that fails to pass the self-checking or on-off detection is sent into the waste removal station.

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