An automatic visual inspection device and method for motor appearance defects

Abstract

The present invention discloses an automated visual inspection device and method for motor appearance defects, which relates to the technical field of defect detection, and includes: a workbench; a rotating table, which is arranged on the inner side of the workbench, a driving assembly is arranged at the bottom of the rotating table to adjust the position of the rotating table, a plurality of mounting seats for placing the motor housing are arranged in a ring shape on the inner side of the rotating table, a visual inspection system is arranged on the workbench, the visual inspection system faces the rotating table and forms an appearance inspection of the motor housing; an adsorption assembly is installed in the workbench and adsorbs and recovers iron filings of the motor housing, the adsorption assembly includes a plurality of connected plate-like structures, and a rubber piece is sleeved on the outer side of the plate-like structure to form a package for the plate-like structure. When the present invention performs visual inspection of the motor appearance, iron filings-like stains attached to the outer wall of the motor housing are processed to avoid the situation that the iron filings-like stains on the outer wall of the motor housing fall off or affect the accuracy of visual inspection of the appearance when the outer wall of the motor housing is inspected.

Description

Technical Field

[0001] The present invention relates to the technical field of defect detection, and in particular to an automatic visual detection device and method for motor appearance defects. Background Art

[0002] Automated visual inspection is a highly effective technology for detecting cosmetic defects in industrial products such as motors. This technology uses high-resolution cameras and advanced image processing algorithms to identify blemishes, stains, cracks, and other issues on products. In motor production, automated visual inspection can improve inspection speed and accuracy and reduce errors and costs of manual inspection.

[0003] Benefits of automated vision inspection systems include:

[0004] High precision: Able to identify tiny foreign objects, flaws, and defects.

[0005] High efficiency: Through the machine vision system, full detection can be achieved online to improve production efficiency.

[0006] Strong adaptability: Able to adapt to different detection scenarios and support rapid switching of products.

[0007] Announcement No. CN106053479A discloses a visual inspection system for workpiece appearance defects based on image processing, including an industrial computer, a coaxial light source, a CCD industrial camera, an image acquisition card and a rejection mechanism; the coaxial light source and the rejection mechanism are both connected to the industrial computer; the CCD industrial camera is connected to the industrial computer through the image acquisition card; wherein: the coaxial light source is used to provide a diffuse reflection light source for the workpiece to be inspected; the CCD industrial camera is used to capture the image of the workpiece at the inspection station; the rejection mechanism is used to reject the workpiece with defects that have been inspected from the production line; the industrial computer has a defect detection module based on image processing; the system has high detection efficiency and is easy to implement.

[0008] After the motor casing is processed, it is inspected for defects. Since the motor undergoes visual inspection after processing, small iron filings-like stains are attached to its surface. During the visual inspection, the iron filings-like stains on the surface are easily removed or fall off. After passing the visual inspection, the iron filings-like stains still need to be manually processed. Moreover, since iron filings-like stains are easy to fall off during the visual inspection of the motor, in order to ensure the accuracy of the visual inspection, the working environment required for the visual inspection process is relatively high. Improper processing of iron filings-like stains can easily cause pollution to the working environment of the visual inspection equipment. Summary of the invention

[0009] One of the purposes of the present invention is to provide an automated visual inspection device and method for motor appearance defects. During the visual inspection of the motor casing appearance, tiny iron filings-like stains attached to the outside of the motor can be processed, and the iron filings-like stains can be recycled at the edges to avoid the presence of iron filings-like stains affecting the working environment of the appearance visual inspection and ensure the accuracy of the appearance visual inspection.

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic visual inspection device for motor appearance defects, comprising:

[0011] Workbench;

[0012] A rotating table, arranged on the workbench, includes a plurality of mounting seats arranged in a ring shape for placing the motor housing, and the motor housing is placed on the mounting seats to position the motor housing;

[0013] A visual inspection system is arranged on the workbench, and the visual inspection system faces the rotating table to inspect the appearance of the motor housing;

[0014] The adsorption assembly, installed in the workbench, includes an electromagnetic block for adsorbing and recovering iron filings from the motor housing, and:

[0015] The adjustment frame is fixed to the inner side of the workbench by bolts, and a plurality of mounting holes are provided on the top wall of the workbench, and the opening distance of each mounting hole corresponds to the adjustment frame. The position of the adjustment frame can be changed by fixing the adjustment frame at different mounting hole positions;

[0016] The mounting frame is fixed to the bottom of the adjustment frame, a positioning frame is arranged inside the mounting frame, the positioning frame can be swingably mounted inside the mounting frame, a top frame is arranged away from a section of the positioning frame connected to the mounting frame, the top frame is connected to the positioning frame and forms a limit for the positioning frame;

[0017] A support spring is sleeved on the inner side of the top frame to support the positioning frame;

[0018] The electromagnet is fixed on the outside of the positioning frame, a magnetic plate is arranged on the outside of the electromagnet, the magnetic plate is fixed in the mounting frame, and the electromagnet and the magnetic plate are magnetically attracted to change the position of the positioning frame;

[0019] The driving component cooperates with the rotating table and drives the rotating table to rotate relative to the visual inspection system and the adsorption component. The rotating table drives the mounting seat to rotate relative to the visual inspection system and the adsorption component, and the mounting seat realizes a full circle rotation at the position of the visual inspection system and the adsorption component.

[0020] In one or more embodiments of the present invention, the above-mentioned driving assembly includes:

[0021] The driving motor is fixed inside the workbench, and its output end is connected to the rotating table to drive the rotating table to rotate;

[0022] The two-stage plunger is installed on the inner side of the workbench and the rotating table respectively, and the rotating table is rotated to a fixed angle, and the central axes of the two-stage plunger coincide with each other;

[0023] The chuck can be slid up and down and sleeved on the outside of the insertion rod. A magnetic part is arranged on the upper part of the chuck. The magnetic part is fixed on the inner side of the rotating table, and the magnetic part forms a magnetic attraction to the chuck. The magnetic part magnetically attracts the chuck to move the chuck to a section of the insertion rod connected to the rotating table.

[0024] An elastic body, fixed to a section of the plug rod connected to the workbench;

[0025] The rotary motor is fixed on the inner side of the chuck. A transmission assembly is arranged between the rotary motor and the chuck. The rotary motor drives the chuck and the insertion rod to rotate through the transmission assembly.

[0026] In one or more embodiments of the present invention, a limiter is provided inside the above-mentioned workbench to limit the rotation of the driving assembly, and the limiter includes:

[0027] A rack is slidably arranged inside the workbench, and the rack can be meshed with the chuck for transmission. An elastic member is arranged on one side of the workbench where the rack extends to form support for the rack;

[0028] A limiting member is fixed to one side of the rack and is used to limit the rotation of the chuck.

[0029] In one or more embodiments of the present invention, the above-mentioned adsorption assembly also includes a plurality of connected plate-like structures, a rubber part is sleeved on the outside of the plate-like structure to wrap the plate-like structure, the electromagnetic block is arranged inside the plate-like structure to form adsorption of iron filings on the surface of the motor casing, and the plate-like structure can be swingably installed on the inner side of the positioning frame.

[0030] In one or more embodiments of the present invention, the plate-like structure comprises:

[0031] The positioning plate can be swingably installed inside the positioning frame, the rubber piece is sleeved on the outside of the positioning plate, and the two sides of the rubber piece extend to the inside of the positioning frame respectively and the positioning frame limits the positions of the two sides;

[0032] The electromagnetic block is installed at the middle position of the positioning plate, and the electromagnetic block transmits magnetic force to the positioning plate.

[0033] In one or more embodiments of the present invention, the plate-like structure further comprises:

[0034] The insert is arranged on the inner side of the positioning frame, a micro telescopic rod is arranged on one side of the insert, the micro telescopic rod is fixed to the inner wall of the positioning frame, and the telescopic end of the micro telescopic rod is connected to the insert and drives the insert to move;

[0035] The clamping groove is provided in the middle of the insert and drives the positioning plate to swing;

[0036] The recovery unit is arranged outside the positioning frame and is used for recovering the iron filings.

[0037] In one or more embodiments of the present invention, the above-mentioned recovery unit comprises:

[0038] The plug plate can be slidably sleeved on the outer side of the positioning frame, and an electric telescopic rod is arranged on the inner side of the plug plate, which is respectively connected to the positioning frame and the plug plate and pushes the plug plate to slide;

[0039] The guide groove is arranged on the outer side of the plug plate, and a recovery cavity is arranged on one side of the guide groove, and the recovery cavity is communicated with the guide groove.

[0040] In one or more embodiments of the present invention, the above-mentioned mounting base includes:

[0041] The bottom frame is rotatably mounted on the inner side of the rotating platform. The bottom of the bottom frame is connected to the plug rod and rotates with the plug rod. A pressure plate is arranged on the inner side of the bottom frame, and the pressure plate contacts the bottom of the motor housing.

[0042] A compression spring is installed between the base frame and the pressure plate to support the pressure plate;

[0043] The clamping rod is swingably mounted on the inner side of the base frame, a support frame is arranged in the middle of the clamping rod, the support frame is connected to the pressing plate and moves synchronously with the pressing plate, and the support frame moves downward to push the clamping rod to swing to clamp the motor housing;

[0044] The elastic sleeve is sleeved on one end of the clamping rod supporting the motor housing.

[0045] The present invention also provides a method for detecting appearance defects of a motor, which is used in the above-mentioned visual inspection device. The detection method comprises the following steps:

[0046] Fix the processed motor housing to the mounting base;

[0047] The driving assembly drives the rotating table to rotate, and the motor housings move to the side close to the adsorption assembly in sequence;

[0048] The electromagnetic block of the adsorption component is close to the motor housing to complete the adsorption of iron filings on the surface of the motor housing;

[0049] Several motor housings move to the position of the visual inspection system in sequence, and the visual inspection system collects images of the motor housings and identifies appearance defects of the motor housings in the images through the motor housing images and image processing algorithms;

[0050] The type of appearance defect is marked. If there are still iron filings on the surface of the motor housing, the motor housing is moved to the adsorption component position on the other side for adsorption again;

[0051] Remove the motor housing that has been inspected by the visual inspection system to complete the visual inspection of the motor housing.

[0052] Through the above technical solution, the present invention has the following beneficial effects:

[0053] 1. When performing visual inspection of the motor appearance, the present invention processes iron filings-like stains attached to the outer wall of the motor housing to prevent the iron filings-like stains attached to the outer wall of the motor housing from falling off or affecting the accuracy of visual inspection of the appearance during inspection, thereby ensuring the accuracy of visual inspection of the appearance and further ensuring the working environment of visual inspection of the appearance.

[0054] 2. In the process of iron filings stain treatment, the position of iron filings stains is changed by magnetic force. Under the guidance of magnetic force, the iron filings are separated from the contact with the motor, so that they can be stably adsorbed by the adsorption component. After the adsorption component completes the adsorption, the motor moves to the visual inspection system for visual inspection of the motor casing appearance.

[0055] 3. The adsorption component is configured in such a way that multiple plate-like structures are interconnected. When the motor casing is subjected to iron filings processing, the state can be changed so that the plate-like structure can fit the shape of the motor casing, thereby ensuring the position of the adsorption component, and then being able to adsorb iron filings at different positions. The adsorption component can be set at the front end of the visual inspection system, and can also be set at the back end of the visual inspection system.

[0056] 4. The motor housing can perform a full circle movement when it moves to the position of the visual inspection system and the adsorption component. The full circle movement of the motor housing is used to realize the overall processing of the motor housing and the visual inspection of the appearance, thereby ensuring the integrity of the visual inspection and ensuring the stability of the motor during the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A perspective view of the present invention;

[0058] Figure 2 This is a schematic diagram of the structure of removing the top of the workbench of the present invention;

[0059] Figure 3 It is a schematic diagram of the adsorption assembly of the present invention;

[0060] Figure 4 An exploded view of the adsorption assembly of the present invention;

[0061] Figure 5 It is a schematic diagram of the plate-like structure of the present invention;

[0062] Figure 6 An exploded view of the recovery unit of the present invention;

[0063] Figure 7 It is a schematic diagram of the recovery unit of the present invention;

[0064] Figure 8It is a schematic diagram of the local structure of the workbench of the present invention;

[0065] Fig. 9 It is a schematic diagram of the bottom structure of the rotating table of the present invention;

[0066] Fig.10 It is a schematic diagram of a driving assembly of the present invention;

[0067] Fig.11 An exploded view of the mounting base of the present invention;

[0068] Fig.12 It is a schematic diagram of the plunger of the present invention;

[0069] Fig.13 It is a cross-sectional view of the position of the limiter of the present invention.

[0070] In the figure: 1 working table, 2 rotating table, 4 stopper, 5 visual inspection system, 6 adsorption component, 7 mounting seat;

[0071] 301 driving motor, 302 magnetic part, 303 chuck, 304 rotating motor, 305 plugging rod, 306 elastic body;

[0072] 401 elastic member, 402 rack, 403 limiting member;

[0073] 601 adjustment frame, 602 mounting hole, 603 mounting frame, 604 positioning frame, 605 top frame, 606 supporting spring, 607 electromagnet, 608 magnetic plate, 609 plate-like structure, 610 rubber part;

[0074] 6091 positioning plate, 6092 electromagnetic block, 6093 insert, 6094 clamping groove, 6095 micro telescopic rod, 6096 recovery unit;

[0075] 6096a plug board, 6096b electric telescopic rod, 6096c guide groove, 6096d recovery chamber;

[0076] 701 base frame, 702 pressure plate, 703 support frame, 704 compression spring, 705 clamping rod, 706 elastic sleeve. DETAILED DESCRIPTION

[0077] The following will disclose multiple embodiments of the present invention with the accompanying drawings. For the purpose of clear description, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not necessary. And if it is possible to implement, the features of different embodiments can be applied interchangeably.

[0078] Unless otherwise defined, all words (including technical and scientific terms) used herein have their usual meanings, which can be understood by those familiar with this field. Furthermore, the definitions of the above words in commonly used dictionaries should be interpreted in the content of this specification as consistent with the meanings of the relevant fields of the present invention. Unless otherwise clearly defined, these words will not be interpreted as idealized or overly formal meanings.

[0079] See also Figure 1-Figure 13 The present invention provides an automated visual inspection device for motor appearance defects, which is used for visual inspection of motor housing appearance defects and can reduce the influence of iron filings on inspection accuracy.

[0080] In one embodiment, the visual inspection device comprises:

[0081] A workbench 1, placed on the ground;

[0082] The rotating table 2 is arranged inside the workbench 1. A driving assembly is arranged at the bottom of the rotating table to adjust the position of the rotating table. The rotating table is provided with a plurality of mounting seats 7 for placing the motor housing in a ring shape. The motor housing is placed on the mounting seats 7 to position the motor housing.

[0083] A visual inspection system 5 is disposed on the workbench 1 and faces the rotating table to inspect the appearance of the motor housing;

[0084] The adsorption component 6 is installed in the workbench 1, and includes an electromagnetic block for adsorbing and recovering iron filings on the motor housing. The adsorption component 6 includes a plurality of connected plate structures 609, and a rubber member 610 is sleeved outside the plate structure 609 to wrap the plate structure 609. The electromagnetic block is arranged in the plate structure 609 to adsorb iron filings on the surface of the motor housing.

[0085] The driving assembly cooperates with the rotating table 2 and drives the rotating table 2 to rotate relative to the visual inspection system 5 and the adsorption assembly 6. The rotating table 2 drives the mounting seat 7 to rotate relative to the visual inspection system 5 and the adsorption assembly 6, and the mounting seat 7 realizes a full circle rotation at the position of the visual inspection system 5 and the adsorption assembly 6. A limiter 4 is arranged inside the workbench 1 to limit the rotation of the driving assembly.

[0086] In this embodiment, the visual inspection system 5 uses a high-resolution camera and advanced image processing algorithms to identify defects in the product appearance. Before defect identification, the outer surface of the motor housing is cleaned by the adsorption component 6 to remove iron filings attached to the motor housing, thereby avoiding the residue of iron filings on the outer surface of the motor housing and ensuring the cleanliness of the motor housing.

[0087] After removing the iron filings on the outer surface of the motor casing, the iron filings can be prevented from blocking the defects on the surface of the motor casing, thereby preventing the damage to the surface of the motor casing from being identified by the visual inspection system 5. Since the iron filings are only attached to the outer surface of the motor casing and are easy to fall off, adsorbing the iron filings on the outer surface of the motor casing can prevent the iron filings from falling and polluting the working environment of the visual inspection system 5.

[0088] In one embodiment, the drive assembly comprises:

[0089] The driving motor 301 is fixed inside the workbench 1 and its output end is connected to the rotating table 2 to drive the rotating table 2 to rotate;

[0090] The two-stage plunger 305 is respectively installed on the inner side of the workbench 1 and the rotating table 2, and the rotating table 2 is rotated to a fixed angle, and the central axes of the two-stage plunger 305 coincide with each other;

[0091] The chuck 303 can be slidably sleeved on the outside of the insertion rod 305 up and down. The upper part of the chuck 303 is provided with a magnetic member 302, which is fixed on the inner side of the rotating table 2. The magnetic member 302 forms a magnetic attraction on the chuck 303. The magnetic member 302 magnetically attracts the chuck 303 so that the chuck 303 moves to a section of the insertion rod 305 connected to the rotating table 2.

[0092] The elastic body 306 is fixed to a section of the insertion rod 305 connected to the workbench 1;

[0093] The rotary motor 304 is fixed inside the chuck 303 , and a transmission assembly is arranged between the rotary motor 304 and the chuck 303 . The rotary motor 304 drives the chuck 303 and the insertion rod 305 to rotate through the transmission assembly.

[0094] In this embodiment, the insertion rod 305 is set to two sections, and the insertion rod 305 connecting the rotating table 2 and the workbench 1 has two connection methods. One end of the insertion rod 305 is connected to the workbench 1 as a fixed connection, and the other end of the insertion rod 305 is connected to the rotating table 2 as a rotatable connection. The insertion rod 305 passes through the rotating table 2 and extends to the bottom of the mounting seat 7 to be fixedly connected to the mounting seat 7. During the rotation of the insertion rod 305, the mounting seat 7 can be driven to rotate, and the upper part of the mounting seat 7 is used to fix the motor. Therefore, during the rotation of the insertion rod 305, the motor housing can be driven to rotate, so that the motor housing can complete a full circle of motion.

[0095] Optionally, the position where the two sections of the insertion rod 305 contact each other is chamfered, and when the chuck 303 moves under the traction of the magnetic member 302, the insertion rod 305 at the bottom section can move to the insertion rod 305 at the top section more stably, and a key is set in the middle of the insertion rod 305 to limit the position of the chuck 303. When the chuck 303 moves to the outside of the insertion rod 305 at the top section, the chuck 303 and the insertion rod 305 are driven to rotate synchronously through the transmission assembly to adjust the position of the motor housing.

[0096] Alternatively, the magnetic component 302 is an electrically controlled magnet. Due to the gravity of the chuck 303 itself, the magnetic component 302 electromagnetically attracts the chuck 303, causing the chuck 303 to move upward. After the power to the magnetic component 302 is cut off, the magnetic force disappears, and the chuck 303 moves downward under its own gravity. The elastomer 306 is set to any elastic material such as rubber, resin, etc., for cushioning the chuck 303.

[0097] The transmission component is a gear transmission, and the chuck 303 will mesh with the transmission component after moving upward, and the chuck 303 will be driven by the rotating motor 304 to rotate synchronously, and the magnetic part 302 is respectively arranged at the positions corresponding to the visual inspection system 5 and the adsorption component 6.

[0098] In one embodiment, the stopper 4 comprises:

[0099] A rack 402 is slidably disposed inside the workbench 1. The rack 402 can be meshed with the chuck 303 for transmission. The rack 402 extends to one side of the workbench 1 and an elastic member 401 is disposed to support the rack 402.

[0100] The limiting member 403 is fixed to one side of the rack 402 to limit the rotation of the chuck 303 .

[0101] In this embodiment, the elastic member 401 is a reset spring. When in use, the chuck 303 rotates to drive the rack 402 to move. After the magnetic member 302 is closed, the chuck 303 falls off the rack 402. Under the action of the reset spring, the rack 402 moves to reset.

[0102] Among them, the function of the limit member 403 is to limit the rotation of the chuck 303. Since the position of the rack 402 is fixed, the position of the chuck 303 is fixed when it engages with the rack 402. The limit member 403 is set at the position where the chuck 303 rotates one circle, which can stably limit the position of the chuck 303 in one circle of movement.

[0103] In one embodiment, the adsorption component 6 further includes:

[0104] The adjustment frame 601 is fixed to the inner side of the workbench 1 by bolts, and a plurality of mounting holes 602 are provided on the top wall of the workbench 1, and the distance between each mounting hole 602 corresponds to the adjustment frame 601. The position of the adjustment frame 601 can be changed by fixing the adjustment frame 601 at different mounting holes 602 positions;

[0105] The mounting frame 603 is fixed to the bottom of the adjustment frame 601. A positioning frame 604 is arranged on the inner side of the mounting frame 603. The positioning frame 604 can be swingably installed on the inner side of the mounting frame 603. A top frame 605 is arranged on a section of the positioning frame 604 away from the one connected to the mounting frame 603. The top frame 605 is connected to the positioning frame 604 and forms a limit for the positioning frame 604. The plate-like structure 609 can be swingably installed on the inner side of the positioning frame 604.

[0106] In this embodiment, the top frame 605 structure is composed of a pulling head and an adjusting head. The pulling head is connected to the positioning frame 604, and the adjusting head is located on the outside of the mounting frame 603. The adjusting head is threadedly connected to the pulling head, and the adjusting head adjusts the swing angle of the positioning frame 604 by adjusting its position on the outside of the pulling head.

[0107] In one embodiment, the adsorption component 6 further includes:

[0108] A support spring 606 is sleeved on the inner side of the top frame 605 to support the positioning frame 604;

[0109] The electromagnet 607 is fixed on the outside of the positioning frame 604 . A magnetic plate 608 is arranged on the outside of the electromagnet 607 . The magnetic plate 608 is fixed in the mounting frame 603 . The electromagnet 607 and the magnetic plate 608 change the position of the positioning frame 604 by magnetic attraction.

[0110] In this embodiment, the adjusting head and the pulling head can only limit the position of the positioning frame 604 to a certain position. In the process of adsorbing the outer surface of the motor housing, the swing angle of the positioning frame 604 is adjusted by the electromagnet 607 and the magnetic plate 608, so that the plate-like structure 609 can move to a larger angle position, thereby facilitating changes according to the shape of the motor.

[0111] In one embodiment, the plate-like structure 609 includes:

[0112] The positioning plate 6091 is swingably mounted inside the positioning frame 604, and the rubber member 610 is sleeved outside the positioning plate 6091, and both sides of the rubber member 610 extend to the inside of the positioning frame 604 and limit the positions of both sides of the positioning frame 604;

[0113] The electromagnetic block 6092 is installed in the middle of the positioning plate 6091 , and the electromagnetic block 6092 transmits magnetic force to the positioning plate 6091 .

[0114] In this embodiment, the electromagnetic block 6092 is configured so that it can transmit magnetic force to the positioning plate 6091 when in use, and magnetically attract iron filings through the swinging position of the positioning plate 6091. The rubber part 610 is configured so that it will not cause damage to the outer surface of the motor housing even when it contacts the outer surface of the motor housing, and will not cause wear of the positioning plate 6091.

[0115] In one embodiment, the plate-like structure 609 further includes:

[0116] The plug piece 6093 is arranged inside the positioning frame 604. A micro telescopic rod 6095 is arranged on one side of the plug piece 6093. The micro telescopic rod 6095 is fixed to the inner wall of the positioning frame 604. The telescopic end of the micro telescopic rod 6095 is connected to the plug piece 6093 and pushes the plug piece 6093 to move.

[0117] The clamping groove 6094 is provided in the middle of the inserting piece 6093 and pushes the positioning plate 6091 to swing;

[0118] The recovery unit 6096 is arranged outside the positioning frame 604 and is used for recovering iron filings.

[0119] In this embodiment, the insert 6093 is V-shaped. When the micro telescopic rod 6095 pushes the insert 6093 to move, the insert 6093 pushes the positioning plate 6091 to change its angle, thereby changing the state of the outer elastic body 306, causing the elastic body 306 to bend and transform into a shape that fits the outer wall of the motor, thereby being able to stably fit the outer surface of the motor to adsorb iron filings.

[0120] Among them, the side of the positioning plate 6091 close to the inserting piece 6093 is T-shaped.

[0121] Optionally, the middle part of the positioning plate 6091 is a connecting shaft, the connecting shaft is fixed inside the positioning frame 604, and the positioning plate 6091 can be swingably sleeved on the outside of the connecting shaft.

[0122] In one embodiment, the recycling unit 6096 includes:

[0123] The plug plate 6096a is slidably mounted on the outer side of the positioning frame 604, and an electric telescopic rod 6096b is arranged inside the plug plate 6096a. The electric telescopic rod 6096b is respectively connected to the positioning frame 604 and the plug plate 6096a to push the plug plate 6096a to slide;

[0124] The guide groove 6096c is arranged on the outer side of the plug plate 6096a, and a recovery chamber 6096d is arranged on one side of the guide groove 6096c, and the recovery chamber 6096d is communicated with the guide groove 6096c.

[0125] In this embodiment, the electric telescopic rod 6096b pushes the insertion rod 305 to slide, a section of the insertion plate 6096a contacts the outer surface of the rubber member 610, and pushes the iron filings located on the outer surface of the rubber member 610 to move. After the electromagnetic block 6092 in the middle of the positioning plate 6091 is powered off, the adsorption of the iron filings disappears, so that the iron filings fall from the guide groove 6096c into the recovery chamber 6096d for recovery.

[0126] In one embodiment, the mounting seat 7 comprises:

[0127] The base frame 701 is rotatably mounted on the inner side of the rotating platform 2. The bottom of the base frame 701 is connected to the plug rod 305 and rotates with the plug rod 305. A pressure plate 702 is arranged on the inner side of the base frame 701. The pressure plate 702 contacts the bottom of the motor housing.

[0128] The compression spring 704 is installed between the base frame 701 and the pressure plate 702 to support the pressure plate 702;

[0129] The clamping rod 705 is swingably mounted on the inner side of the base frame 701. A support frame 703 is arranged in the middle of the clamping rod 705. The support frame 703 is connected to the pressing plate 702 and moves synchronously with the pressing plate 702. The support frame 703 moves downward to push the clamping rod 705 to swing to clamp the motor housing.

[0130] The elastic sleeve 706 is sleeved on one end of the clamping rod 705 supporting the motor housing.

[0131] In this embodiment, through the setting of the pressure plate 702, the support frame 703, and the clamping rod 705, when in use, the motor is placed on the pressure plate 702, and the pressure plate 702 moves downward, so that the support frame 703 pushes the clamping rod 705 to expand, thereby completing the support and limiting of the inside of the motor housing, so that the central axis of the motor coincides with the base frame 701.

[0132] The provision of the elastic sleeve 706 can prevent the clamping rod 705 from causing damage to the motor housing after contacting the motor housing, thereby ensuring the stability of the motor housing.

[0133] The arrangement of the compression spring 704 can facilitate the resetting of the pressure plate 702 .

[0134] The present invention also provides a method for detecting appearance defects of a motor, which is used in the above-mentioned visual inspection device. The detection method comprises the following steps:

[0135] The processed motor housing is fixed to the mounting seat, and the motor housing presses down the mounting seat 7, so that the mounting seat 7 forms a limit for the motor housing;

[0136] The driving assembly drives the rotating table to rotate, and the motor housings move to a side close to the adsorption assembly 6;

[0137] The electromagnetic block of the adsorption component 6 is close to the motor housing to complete the adsorption of iron filings on the surface of the motor housing;

[0138] Several motor housings move to the position of the visual inspection system 5 in sequence, and the visual inspection system 5 collects images of the motor housings and identifies appearance defects of the motor housings in the images through the motor housing images and image processing algorithms;

[0139] The type of appearance defect is marked. If there are still iron filings on the surface of the motor housing, the motor housing moves to the position of the adsorption component 6 on the other side for adsorption again;

[0140] The motor housing inspected by the visual inspection system 5 is removed to complete the visual inspection of the motor housing.

[0141] In summary, the technical solutions disclosed in the above embodiments of the present invention have at least the following advantages:

[0142] 1. When performing visual inspection of the motor appearance, the present invention processes iron filings-like stains attached to the outer wall of the motor housing to prevent the iron filings-like stains attached to the outer wall of the motor housing from falling off or affecting the accuracy of visual inspection of the appearance during inspection, thereby ensuring the accuracy of visual inspection of the appearance and further ensuring the working environment of visual inspection of the appearance.

[0143] 2. In the process of processing iron filings stains, the position of the iron filings stains is changed by magnetic force. Under the guidance of the magnetic force, the iron filings are separated from the contact with the motor so that they can be stably adsorbed by the adsorption component 6. After the adsorption component 6 completes the adsorption, the motor moves to the visual inspection system 5 for visual inspection of the appearance of the motor casing.

[0144] 3. The adsorption component 6 is configured in such a way that a plurality of plate-like structures 609 are interconnected. When the exterior of the motor casing is subjected to iron filings processing, the state can be changed so that the plate-like structure 609 can fit the shape of the exterior of the motor casing, thereby ensuring the position of the adsorption component 6, and then being able to adsorb iron filings at different positions. The adsorption component 6 can be arranged at the front end of the visual inspection system 5, and can also be arranged at the rear end of the visual inspection system 5.

[0145] 4. When the motor housing moves to the position of the visual inspection system 5 and the adsorption component 6, it can perform a full circle movement. The full circle movement of the motor housing is used to realize the overall processing of the motor housing and the visual inspection of the appearance, so as to ensure the integrity of the visual inspection and ensure the stability of the motor during the movement.

[0146] Although the present invention is disclosed in conjunction with the above embodiments, it is not intended to limit the present invention. Anyone familiar with this technology can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the attached claims.

Claims

1. An automatic visual inspection device for motor appearance defects, characterized in that: include: Workbench; A rotating table, arranged on the workbench, includes a plurality of mounting seats arranged in a ring shape for placing the motor housing, and the motor housing is placed on the mounting seats to position the motor housing; A visual inspection system is arranged on the workbench, and the visual inspection system faces the rotating table to inspect the appearance of the motor housing; The adsorption assembly, installed in the workbench, includes an electromagnetic block for adsorbing and recovering iron filings from the motor housing, and: The adjustment frame is fixed to the inner side of the workbench by bolts, and a plurality of mounting holes are provided on the top wall of the workbench, and the opening distance of each mounting hole corresponds to the adjustment frame. The position of the adjustment frame can be changed by fixing the adjustment frame at different mounting hole positions; The mounting frame is fixed to the bottom of the adjustment frame, a positioning frame is arranged inside the mounting frame, the positioning frame can be swingably mounted inside the mounting frame, a top frame is arranged away from a section of the positioning frame connected to the mounting frame, the top frame is connected to the positioning frame and forms a limit for the positioning frame; A support spring is sleeved on the inner side of the top frame to support the positioning frame; The electromagnet is fixed on the outside of the positioning frame, a magnetic plate is arranged on the outside of the electromagnet, the magnetic plate is fixed in the mounting frame, and the electromagnet and the magnetic plate are magnetically attracted to change the position of the positioning frame; The adsorption assembly also includes a plurality of connected plate-like structures, a rubber piece is sleeved on the outer side of the plate-like structure to form a wrapping of the plate-like structure, an electromagnetic block is arranged inside the plate-like structure to form an adsorption of iron filings on the surface of the motor housing, and the plate-like structure can be swingably installed on the inner side of the positioning frame; the plate-like structure includes: The positioning plate can be swingably installed inside the positioning frame, the rubber piece is sleeved on the outside of the positioning plate, and the two sides of the rubber piece extend to the inside of the positioning frame respectively and the positioning frame limits the positions of the two sides; The electromagnetic block is installed in the middle of the positioning plate, and the electromagnetic block transmits magnetic force to the positioning plate; The insert is arranged on the inner side of the positioning frame, a micro telescopic rod is arranged on one side of the insert, the micro telescopic rod is fixed to the inner wall of the positioning frame, and the telescopic end of the micro telescopic rod is connected to the insert and drives the insert to move; The clamping groove is provided in the middle of the insert and drives the positioning plate to swing; The recovery unit is arranged outside the positioning frame and is used for recovering the iron filings.

2. The automatic visual inspection device for motor appearance defects according to claim 1 is characterized in that: The driving assembly cooperates with the rotating table and drives the rotating table to rotate relative to the visual inspection system and the adsorption assembly. The rotating table drives the mounting seat to rotate relative to the visual inspection system and the adsorption assembly, and the mounting seat realizes a full rotation at the position of the visual inspection system and the adsorption assembly.

3. The automatic visual inspection device for motor appearance defects according to claim 2 is characterized in that: The drive components include: The driving motor is fixed inside the workbench, and its output end is connected to the rotating table to drive the rotating table to rotate; The two-stage plunger is installed on the inner side of the workbench and the rotating table respectively, and the rotating table is rotated to a fixed angle, and the central axes of the two-stage plunger coincide with each other; The chuck can be slid up and down and sleeved on the outside of the insertion rod. A magnetic part is arranged on the upper part of the chuck. The magnetic part is fixed on the inner side of the rotating table, and the magnetic part forms a magnetic attraction to the chuck. The magnetic part magnetically attracts the chuck to move the chuck to a section of the insertion rod connected to the rotating table. An elastic body, fixed to a section of the plug rod connected to the workbench; The rotary motor is fixed on the inner side of the chuck. A transmission assembly is arranged between the rotary motor and the chuck. The rotary motor drives the chuck and the insertion rod to rotate through the transmission assembly.

4. The automatic visual inspection device for motor appearance defects according to claim 3 is characterized in that: A limiter is set inside the workbench to limit the rotation of the drive assembly. The limiter includes: A rack is slidably arranged inside the workbench, and the rack can be meshed with the chuck for transmission. An elastic member is arranged on one side of the workbench where the rack extends to form support for the rack; A limiting member is fixed to one side of the rack and is used to limit the rotation of the chuck.

5. The automatic visual inspection device for motor appearance defects according to claim 4 is characterized in that: The recovery unit includes: The plug plate can be slidably sleeved on the outer side of the positioning frame, and an electric telescopic rod is arranged on the inner side of the plug plate, which is respectively connected to the positioning frame and the plug plate and pushes the plug plate to slide; The guide groove is arranged on the outer side of the plug plate, and a recovery cavity is arranged on one side of the guide groove, and the recovery cavity is communicated with the guide groove.

6. The automatic visual inspection device for motor appearance defects according to claim 5 is characterized in that the mounting seat include: The bottom frame is rotatably mounted on the inner side of the rotating platform. The bottom of the bottom frame is connected to the plug rod and rotates with the plug rod. A pressure plate is arranged on the inner side of the bottom frame, and the pressure plate contacts the bottom of the motor housing. A compression spring is installed between the base frame and the pressure plate to support the pressure plate; The clamping rod is swingably mounted on the inner side of the base frame, a support frame is arranged in the middle of the clamping rod, the support frame is connected to the pressing plate and moves synchronously with the pressing plate, and the support frame moves downward to push the clamping rod to swing to clamp the motor housing; The elastic sleeve is sleeved on one end of the clamping rod supporting the motor housing.

7. A method for detecting motor appearance defects, used in an automatic visual detection device for motor appearance defects as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: Fix the processed motor housing to the mounting base; The driving assembly drives the rotating table to rotate, and the motor housings move to the side close to the adsorption assembly in sequence; The electromagnetic block of the adsorption component is close to the motor housing to complete the adsorption of iron filings on the surface of the motor housing; Several motor housings move to the position of the visual inspection system in sequence, and the visual inspection system collects images of the motor housings and identifies appearance defects of the motor housings in the images through the motor housing images and image processing algorithms; The type of appearance defect is marked. If there are still iron filings on the surface of the motor housing, the motor housing is moved to the adsorption component position on the other side for adsorption again; Remove the motor housing that has been inspected by the visual inspection system to complete the visual inspection of the motor housing.

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