32 results about "Visual inspection (procedure)" patented technology

The utility model belongs to the technical field of battery assembly, and particularly relates to a cylindrical battery welding device and a cylindrical battery assembly line. The cylindrical battery welding device comprises a rotary table, a feeding station, a pre-welding visual inspection station, a welding station, a post-welding visual inspection station and a discharging station are sequentially arranged on the peripheral side of the rotary table in the rotating direction of the rotary table, the pre-welding visual inspection assembly is arranged on the pre-welding visual inspection station, and the welding device is arranged on the welding station. And the post-welding visual inspection assembly is arranged at the post-welding visual inspection station. The welding positions of the battery cell and the collector plate can be detected by arranging the pre-welding visual inspection assembly, the accuracy of the welding positions is guaranteed, the quality of the battery cell and the collector plate after welding is detected by arranging the post-welding visual inspection assembly, unqualified products are prevented from flowing into the next procedure, and the production efficiency is improved. And the post-welding visual inspection assembly can feed back the detected defects to the welding device forwards according to the detected defects, the welding device is guided to weld more accurately, and the yield of products is increased.

The utility model discloses a cigar packaging tube appearance detection device, which comprises a roller conveyor, the upper part of the roller conveyor is sequentially provided with a cap plug blanking mechanism and a gland rotating device from left to right, the gland rotating device comprises a top cap mechanism and a rotating mechanism, the top cap mechanism and the rotating mechanism are axially aligned, and the top cap mechanism and the rotating mechanism are arranged on the roller conveyor. The cover pushing mechanism is arranged on one side of the cover plug discharging mechanism, the roller type conveyor is further provided with a visual detection mechanism, and the working end of the visual detection mechanism corresponds to the cover pressing rotating device. The visual inspection mechanism is arranged on the roller type conveyor, cigar packaging procedures are reduced through cooperation of the gland rotating device and the visual inspection mechanism, meanwhile, the packaging pipe can rotate through the rotationally-connected pushing head, and visual inspection of the visual inspection mechanism is facilitated.

The invention discloses visual inspection equipment which comprises a rotary conveying device, a die holder, a feeding device, a visual inspection device, a qualified product discharging device and a defective product discharging device, the rotary conveying device comprises a rotary disc, the die holder is arranged on the rotary disc and can rotate, and the feeding device is used for pushing a single circular tube onto the die holder; and the visual detection device is used for detecting cylindrical surface defects of the circular tube on the die holder. Round pipes are fed into the die holder through the feeding device and conveyed to the visual detection device through the rotary conveying device, the visual detection device conducts surface defect visual detection on the round pipes at the corresponding positions, and qualified products are conveyed to a conveying line connected with the next procedure through the qualified product discharging device after detection is completed. And the defective products are conveyed to the defective product conveying line to be removed by the defective product discharging device, so that the purposes of automatic detection, time saving and product quality improvement are achieved.

The invention discloses a full-automatic welding machine for a lithium battery anti-explosion piece. The full-automatic welding machine comprises a top cover feeding device, a laser welding device arranged at one end of the top cover feeding device and a welding bead detection device arranged at one end of the laser welding device. The top cover feeding device comprises a top cover conveying mechanism, a top cover stock bin mechanism arranged on one side of the top cover conveying mechanism, a top cover transferring mechanism arranged at one end of the top cover conveying mechanism, a laser marking mechanism and a defective product transferring mechanism, wherein the laser marking mechanism and the defective product transferring mechanism are arranged on the other side of the top cover conveying mechanism. A first visual inspection mechanism and a second visual inspection mechanism are further arranged between the top cover conveying mechanism and the top cover stock bin mechanism. A series of procedures such as automatic feeding, assembling and welding of the battery top cover and the anti-explosion piece, weld bead detecting and cleaning, shaping and discharging can be achieved, the automation degree is high, and the working efficiency is high.

The invention discloses a visual inspection four-station riveting work station, relates to the technical field of automatic manufacturing equipment, and aims to solve the problems of low efficiency, unstable quality and insufficient detection precision in traditional brake pad riveting production. The four-station rotary table drives products to sequentially complete feeding, riveting, detecting and discharging procedures, the servo riveting mechanism ensures riveting quality through precise driving and pressure feedback, the visual detection mechanism accurately recognizes characteristic parameters of the products to screen unqualified products, the automatic oil dispensing mechanism solves the problem of rivet paint falling, the control system overall plans the action time sequence of all the mechanisms, and the riveting quality is guaranteed. According to the workstation, manual intervention is reduced through automatic integrated design, production efficiency and quality stability are improved by means of precise control and high-precision detection, meanwhile, the workstation has multi-model product adaptation capacity, supports rapid remodeling and data tracing, and is suitable for large-scale riveting production scenes in the fields of automobile parts and the like.

The invention relates to the field of food detection, in particular to a food screening device based on visual detection, which comprises a screening mechanism and a detection mechanism, the detection mechanism is used for performing visual detection on food; the detection mechanism is mounted on the screening assembly; the screening mechanism comprises a conveying part and a screening part, the detection mechanism is installed on the conveying part, and the screening part is installed at the discharging end of the conveying part; the conveying part is used for correcting the position of the food; and the screening part is used for removing defective products. According to the food screening device, food can stably move along with the conveying rhythm, the situation that the overall screening efficiency is affected due to blocking is avoided, the applicability of the device can be effectively improved, operation links in the next procedure can be reduced, qualified food and unqualified food can be divided and independently collected, the situation that after food visual inspection, confusion occurs can be effectively prevented, and the screening efficiency is improved. And the detection and screening quality can be effectively improved.

The invention discloses a new energy motor self-adhesive material iron core scattered sheet curing automatic line. Comprising a double-layer circulation conveying line, a circulation tool, a tool backflow mechanism, a feeding station, a visual inspection station, a pressurizing, shaping and height measuring station, a sheet adding and reducing station, an electromagnetic induction heating, curing and cooling station, a tool cooling station, a storage station, a code printing and reading station, a height detection station, a cleaning air shower station, an offline storage station and the like. Automatic heating curing and cooling of self-adhesive iron core scattered sheets can be achieved, stacking and quality control of the iron core scattered sheets are conducted on line, cured iron core products are subjected to online code printing, code scanning, detection and air shower cleaning, the whole technological process is recorded on line, the production quality of the products is tracked in real time, the product percent of pass is increased, the production efficiency is improved, and accurate tracing of the products is achieved. The working procedures of manual carrying and tool locking are eliminated, the labor intensity of workers is reduced, and the problems of poor product quality and the like caused by product curing pressure difference generated by manual locking are solved.

The invention relates to the technical field of radiator production and processing, in particular to a processing production line for radiators, which adopts modular design to integrate cutting equipment, multiple groups of processing equipment and visual inspection equipment, and all the equipment are combined as independent functional modules to form the complete processing production line. A transfer structure and a workpiece positioning reference are kept consistent, a complex transition connection mechanism does not need to be additionally designed, and the assembly difficulty of a production line is greatly reduced; meanwhile, the multiple sets of machining equipment modules are matched with different machined parts such as drill bits, milling cutters and screw taps through the tool changing platform, drilling, milling and tapping procedures can be executed respectively, repeated investment of single-procedure special equipment is avoided, the modules can be flexibly increased or decreased or replaced according to production requirements, and the equipment adaption cost and the later transformation difficulty are remarkably reduced.

The present application mainly discloses a flexible and intuitive configuration system, which is realized by an electronic device coupled with a master control electronic device of an automatic visual inspection system, thereby being information-linked with N cameras and N mechanical arms of the automatic visual inspection system. When a setting procedure is performed on the automatic visual inspection system, an arm setting operation is first performed on each of the mechanical arms, and a camera setting operation is performed on the camera held by the mechanical arm, and then the camera is controlled to shoot a specified object. In the process, the flexible and intuitive setting system correspondingly records the configuration parameters of the camera and the mechanical arm, and uploads multiple object images of the object to a remote electronic device, so that the remote electronic device generates an object defect identification model by using the multiple object images. Finally, the object defect identification model is installed in the master control electronic device.

The application provides a magnetocardiogram automatic noise reduction method based on independent component analysis, which comprises the following steps: collecting multi-channel resting-state magnetocardiogram signals by using a sensor, removing high-frequency interference and baseline drift, and performing timing segmentation and standardization processing on the magnetocardiogram signals; calculating each independent component of the magnetocardiogram signals by using an independent component analysis algorithm, and obtaining labeled information by visual inspection; performing sliding window clipping processing and spectrum analysis on each independent component; performing feature extraction based on the time-domain and frequency-domain independent component data sets; inputting the time-domain independent component data set and the extracted features into a time series classification network, training the labeled information as a label, and obtaining an automatic independent component analysis model. The method provides a standardized and automatic preprocessing procedure for magnetocardiogram signals, can be applied to complex use scenarios, has a simple processing procedure, high automation degree, good robustness, strong flexibility, and high medical application value.

The utility model provides full-automatic tire mounting and inflating production equipment which comprises a rack, a tire conveying roller way, a hub tire mounting and inflating device and a microcontroller, the tire conveying roller way, the hub tire mounting and inflating device and the microcontroller are mounted on the rack, and the tire conveying roller way is provided with a tire visual inspection point alignment device and an automatic tire oiling and moving device. The tire visual inspection point alignment device comprises a tire detection support and a point alignment visual detector, and the tire automatic oiling moving device comprises an automatic mechanical arm, a tire automatic clamp and an automatic oiling device. The microcontroller controls the running sequence of the tire conveying roller way, the point-to-point visual detector, the automatic mechanical arm, the tire automatic clamp, the automatic oiling device and the hub tire installing and inflating device, so that the production procedures of tire conveying, tire point-to-point detection and point-to-point rotation, tire oiling, tire installing and tire inflating are sequentially carried out. The structure is compact, labor cost is reduced, operation is convenient, assembling efficiency is improved, and product manufacturing quality is improved.

The invention relates to the field of injection molding part detection, in particular to main-direction and lateral-direction visual detection equipment for injection molding parts, which comprises a demolding gripper and a detection chamber, the demolding gripper is used for taking out a shell formed in injection molding equipment and placing the shell on a supporting plate, the supporting plate can move back and forth between an inner chamber and an outer chamber of the detection chamber, and the shell is conveyed into the detection chamber through the supporting plate; a main detection station, a side detection station and a conveying gripper for conveying a shell to a required position are arranged on the platform in the detection chamber; the main detection station comprises a main view placement table and a camera A over against the main view placement table, and is used for capturing an image of the top of the shell; and the side detection station comprises a side-view placement table and a camera B right facing the side end of the shell, and the side-view placement table can axially rotate, so that the camera B continuously captures images of the side face of the shell. The effects that traditional manual detection is replaced, the detection standard is unified, the machining procedure is simplified, demolding of the injection molding equipment and detection of the shell are linked, and meanwhile the demolding time and the detection time are shortened are achieved.

The invention discloses a flexible control method and system for a hub machining production line based on visual inspection, and relates to the technical field of visual inspection methods, and the method comprises the steps: determining the surface treatment grade of a hub based on a spraying treatment event and an image of the hub after a spraying process; the flexible control route of the hub is determined according to the semi-finished product image of the hub, the remaining process events of the hub and the overall shape of the hub, and the accuracy of the flexible control route of the hub is improved. Therefore, the flexible control event of the hub is determined according to the node event of each flexible control node, the overall shape of the hub and the corresponding model; the corresponding flexible control action is determined based on recognition of the flexible control event of the hub, the flexible control content of the hub is determined according to the flexible control action, the machining process of the hub and the corresponding machining procedure, and the accuracy of the flexible control content of the hub is improved.

An air data probe inspection tool includes a non-metallic sleeve designed to match the contour of a machined probe head of the air data probe. This sleeve fits onto the probe head and aligns with at least one opening of the probe. The air data probe inspection tool further includes a rigid flag coupled to the non-metallic sleeve, aligning with a probe strut leading edge and a top surface of a baseplate. Together, the sleeve and flag facilitate visual inspection for detecting misalignment or bending of the air data probe during installation or maintenance procedures.

The application discloses a kind of drug spray head finished product defect rapid detection screening device, including body, the inner cavity of the body is provided with box, the inner cavity of the box is connected with first servo motor by bolt, the power output end of the first servo motor is fixedly connected with rotating rod, the top of the rotating rod is slidably provided with sleeve, the inside of the sleeve is provided with clamping mechanism, the present application is driven rotating rod by first servo motor, turbine and cam linkage, realize the accurate up-and-down movement of support plate, cooperate with clamping mechanism and automatically grab spray head, real-time detection is combined with wide-angle camera and carousel simulation pressing action, spray head clamping, rotation, pressing test, visual inspection and sorting procedure are integrated, compared with traditional segmented detection efficiency, greatly reduce manual intervention and time cost.

The invention discloses a children camera memory card slot automatic detection line, which comprises a feeding mechanism, a function detection mechanism, a transmission line, a first carrying mechanism, a second carrying mechanism, a visual detection mechanism, a first discharging mechanism and a second discharging mechanism, and is characterized in that the feeding mechanism is used for moving a card slot device to the function detection mechanism; the function detection module is used for detecting the functional integrity of the card slot device; the first carrying mechanism is used for moving the clamping groove devices with complete functions to the transmission line, the second carrying mechanism is used for driving the clamping groove devices to move to the visual detection station along the transmission line, and the visual detection mechanism is used for performing visual detection on the clamping groove devices at the visual detection station; the first discharging mechanism is used for transferring good products on the visual inspection station to the discharging and storing device. The second discharging mechanism is used for discharging the defective product clamping groove device at the visual detection station, double detection of functions and vision can be achieved through the structure, and working procedures can be saved.

The utility model discloses an automatic processing practical training examination device, which comprises a workbench, the workbench is sequentially provided with a stereoscopic warehouse unit, an assembling unit, a visual inspection unit, a sorting unit and a conveying unit, and the visual inspection unit comprises a supporting seat, a stand column, a light source support, a light source module, a camera support, a CCD camera and a first supporting frame. The supporting base is fixedly connected to the workbench, the stand column and the first supporting frame are arranged on the supporting base at intervals and correspond to each other in the front-back direction, the light source module is installed on the light source support, one end of the light source support penetrates through and is fixed to the stand column in the longitudinal direction, and one end of the camera support penetrates through and is fixed to the stand column in the longitudinal direction. According to the utility model, the visual detection unit is additionally arranged, so that the color attribute and the size of a workpiece can be detected, and the detection procedure in the automatic processing process can be simulated.

Provided is an appearance inspection method capable of inspecting solder defects using an image measuring device. The appearance inspection method inspects a solder bump formed on a pad of an inspection object based on an image of the inspection object. The appearance inspection method includes: an inspection area specifying step for specifying an inspection area in an image of an inspection object; a pad region detection step for detecting a pad region included in the inspection region; a raised region detection step for detecting a raised region included in the inspection region; and a defect determination step for determining the presence or absence of a defect on the basis of the detected pad region and / or bump region.

The invention relates to the technical field of production safety, and discloses a safety protection method, device and equipment for a stamping production line and a readable storage medium. The method is applied to the stamping production line, a visual monitoring device is arranged in the stamping production line, and the method comprises the steps that real-time visual data of the visual monitoring device are acquired in an exception handling scene of the stamping production line; and according to the real-time visual data, personnel retention information of the risk area of the stamping production line is determined, and starting and stopping of the stamping production line are controlled according to the personnel retention information. Whether people stay in the risk area of the stamping production line or not is monitored through the visual monitoring device, operation defects and observation blind areas caused by pure dependence on manual following of locking and listing regulations and visual inspection of external personnel are avoided, and potential safety hazards in an abnormal handling scene of the stamping production line are reduced.

The invention discloses inductance paint stripping equipment, and relates to the technical field of laser processing. The equipment comprises a conveying device, a paint stripping system, a feeding device and a discharging device. The conveying device is used for sequentially conveying the carrying discs loaded with the inductors along the annular path. The paint stripping system is arranged along the transmission path and comprises at least three paint stripping stations which are spatially arranged, and each paint stripping station is provided with a laser head and a visual inspection camera. The stations are configured to perform sequential laser paint stripping operations on three different and non-opposing surfaces of an inductor, such as a top surface and two opposing sides, respectively, when the inductor passes. The equipment is further provided with a positioning mechanism for accurately positioning the inductor and an adsorption device for removing waste materials. Through multi-station cooperation and precise transmission positioning, a complex multi-face paint stripping task is decomposed into continuous standardized procedures, high-efficiency, high-precision and full-automatic production of inductor multi-face paint stripping is achieved, and the problem that a traditional single-face machining mode is low in efficiency is effectively solved.

The invention discloses a capacitor electrical performance intelligent detection method and system based on visual detection, after a capacitor enters a detection area, image acquisition is carried out, a visual system completes preliminary appearance screening, and position and attitude positioning is synchronously carried out; a test pin mechanism of the test machine dynamically adjusts the pressing position and angle according to the positioning information, and photographs the contact point of the test pin and the capacitor before and after the test pin is pressed; the water flows through a secondary visual inspection station, and whether newly added appearance defects are generated due to testing or not is rechecked through visual inspection; meanwhile, the system generates a unique ID for each capacitor; according to the electrical performance parameter grading and the appearance condition, warehouse division is realized; meanwhile, the equipment state and the product abnormal index are monitored, and an early warning or maintenance program is triggered. According to the invention, artificial fatigue and subjectivity can be eliminated, the detection consistency is higher, the manual maintenance cost is reduced, the stability of the production process is improved, material blocking is reduced, the data query and processing speed is improved, and the batch quality risk is avoided in advance.

The invention discloses a tin sheet pasting machine for a photovoltaic diode. Comprising a rack main body, and a product feeding mechanism, a product conveying channel mechanism, a glue brushing mechanism, a tin sheet feeding mechanism, a tin sheet pasting mechanism and a product discharging mechanism which are arranged on a table surface of the rack main body, the product feeding mechanism is arranged at an inlet of the product conveying channel mechanism, the glue brushing mechanism and the tin sheet pasting mechanism are sequentially arranged above the product conveying channel mechanism, the tin sheet feeding mechanism is located on one side of the product conveying channel mechanism, and the discharging end of the tin sheet feeding mechanism is matched with the taking end of the tin sheet pasting mechanism. And the product discharging mechanism is arranged at an outlet of the product conveying channel mechanism. An original dispensing mode is replaced with glue brushing, and the production efficiency is remarkably improved. Visual inspection is carried out after the glue brushing procedure and the surface mounting procedure, and the rate of defective products is reduced. And the universality and the flexibility of the equipment are improved through the pneumatic suction cup module with the variable spacing. The whole tin sheet pasting process is fully automatic, manual intervention is reduced, and production efficiency and stability are improved.

The utility model relates to the technical field of visual inspection equipment, in particular to a polymer soft package battery appearance inspection device based on CCD (Charge Coupled Device) vision, which comprises a rack, a first CCD visual inspection camera module and a second CCD visual inspection camera module are arranged on the rack, each group of CCD visual inspection camera module at least comprises a CCD visual inspection camera, the two groups of CCD visual detection camera modules are respectively and movably arranged on the rack, the rack further comprises a carrying platform for placing a battery to be detected, visual detection points of the two groups of CCD visual detection camera modules are obliquely arranged relative to the battery to be detected, and one group of CCD visual detection camera modules is vertical to the battery to be detected. According to the utility model, the two groups of CCD visual detection camera modules are arranged in different directions, so that the appearance of the to-be-detected soft package battery can be photographed in all directions, and the detection process can be carried out only by fixing the to-be-detected battery on the object carrying platform, and excessive manual cooperation is not needed.

The utility model discloses a clamping device with an alignment detection function, and relates to the field of stamping machining. The material clamping device comprises a mounting base plate, two horizontally arranged clamping assemblies mounted on the base plate, a horizontal adjusting assembly mounted on the base plate, a visual inspection assembly mounted on the base plate and a controller connected with the visual inspection assembly and used for controlling the clamping assemblies and the horizontal adjusting assembly to work. According to the clamping device, more accurate plate alignment can be achieved, redundant procedures caused by design reservation and shearing are avoided, then the production efficiency is improved, the production cost is reduced, and the quality of final products is improved.

The invention discloses an automatic road crack repairing system and method with a multi-stage perception function, and belongs to the technical field of road maintenance equipment. The system is installed on a mobile carrier and comprises a multi-stage sensing module, a chassis cleaning module, an execution module and a central control unit. Relates to a modularized road crack automatic repairing system which integrates multi-stage visual inspection, laser ranging compensation and chassis pre-cleaning functions and can be adapted to various mobile carriers. The method comprises the steps of inspection guidance, dynamic pre-cleaning, precise positioning and parking, profiling repair and reset and circulation. According to the automatic road crack repairing system integrating graded sensing and chassis pre-sweeping, through cooperation of specific sensor layout and an execution mechanism, the problems that vehicle operation parking is difficult, the road surface profiling precision is low and the procedure connection efficiency is low are solved, and efficient cooperation of sweeping and repairing is achieved.

The utility model discloses a hose detection machine, which relates to the technical field of hose manufacturing and comprises a frame. The receiving mechanism is arranged on the rack and used for receiving the hose; the bearing mechanism is arranged on the rack and comprises a pipe groove, and the pipe groove is horizontally placed; the feeding mechanism is arranged on the rack, and the feeding mechanism clamps the hose received by the receiving mechanism and carries the hose to the hose groove; the visual detection mechanism is arranged on the rack and located on the two sides of the hose groove so as to detect the hose borne by the bearing mechanism to distinguish qualified products and waste products; and the discharging mechanism is arranged on the rack, and the discharging mechanism is used for removing waste products in the pipe groove and separating qualified products from the waste products. The technical scheme provided by the utility model can effectively reject waste products and output qualified products, that is, a closed loop is formed by production and detection in an injection molding process, all output products are qualified products, problems are found in time, injection molding parameters are fed back and adjusted, the injection molding process is improved, and the product injection molding qualification rate is improved.

The utility model discloses an automatic processing and assembling practical training examination device, which comprises a working table, a stereoscopic warehouse unit, an assembling unit, a visual inspection unit, a sorting unit and a conveying unit are sequentially arranged on the working table, the conveying unit is used for carrying workpieces to circulate among the units, and the units are electrically connected with a control unit and are coordinated to act by the control unit; a grinding unit is additionally arranged between the stereoscopic warehouse unit and the assembling unit and comprises a grinding assembly and a conveying assembly. The grinding assembly comprises a grinding motor capable of moving longitudinally and is used for machining the surface of the workpiece. The conveying assembly is used for grabbing and transferring a workpiece to the position below the polishing assembly, and the conveying assembly comprises a polishing moving plate capable of sliding along a linear path, a polishing pneumatic clamping jaw installed on the moving plate and a polishing pneumatic finger for driving the polishing pneumatic clamping jaw to be opened and closed. Workpiece surface treatment procedures on a real production line are simulated, and the teaching blank of traditional practical training equipment in the surface treatment link is filled.

The utility model belongs to the technical field of wiring harness processing, specifically disclose a wiring harness core wire color discernment adjusting mechanism, including bottom plate, be provided with color identification mechanism on the bottom plate, color identification mechanism includes clamping mechanism and visual inspection mechanism, clamping mechanism includes at least a pair of synchronous movement's clamping unit, every clamping unit includes axle body and clamping part, axle body and clamping part are connected through synchronous transmission mechanism between, synchronous transmission mechanism includes respectively setting on axle body and clamping part's synchronous pulley, the utility model discloses the setting of color identification mechanism, cooperate CCD camera sustained collection high -definition image and pass through visual inspection technique real -time discernment wire core color, monitor rotation angle, realized wire core color's automatic identification and accurate positioning, do not need artificial visual identification, not only improved work efficiency, also avoided because artificial fatigue leads to the problem of increasing error probability, guaranteed the follow -up processing quality, provided the positioning reference for follow -up processing procedure.

This invention relates to the field of pipeline circumferential weld inspection technology, specifically a non-destructive testing device and method for pipeline circumferential welds that allows for excavation-free repair. The device includes a mobile vehicle with a lifting platform mounted on it. The lifting platform is driven by a first drive device mounted on the mobile vehicle and can be raised and lowered. A rotating shaft is rotatably mounted on the lifting platform, and three elastic telescopic arm structures are evenly spaced along its circumference. Each elastic telescopic arm structure includes a guide sleeve, a sliding arm, and a spring. The guide sleeve is fixed to the rotating shaft and slides in cooperation with the sliding arm. This invention integrates the functions of a scraper, a grinding disc, and a vision sensor, achieving integrated online cleaning, grinding, and visual inspection of pipeline circumferential welds. This effectively solves the problems of poor inspection results, cumbersome procedures, and low efficiency in existing technologies for dirty welds, significantly improving the reliability and efficiency of the inspection.

The utility model discloses an automobile brake workpiece visual inspection device which comprises a conveying mechanism, a clamping rotating mechanism, a visual identification mechanism and a feedback processing mechanism, after laser cleaning of a target Q235B workpiece is completed, a conveying motor of the conveying mechanism drives a conveying crawler belt to convey the workpiece to the position above a clamping device, the clamping device fixes a main workpiece through a mechanical and electromagnetic device, and the clamping rotating mechanism is connected with the visual identification mechanism. The high-resolution camera right above accurately recognizes the first face of the workpiece, meanwhile, the rotating rod is turned over by 360 degrees, the high-resolution camera accurately recognizes the second face of the workpiece and rapidly compares the second face of the workpiece with good products in a database, if the workpiece is the good product, the workpiece is put down to the next procedure through the rotating disc, and if the workpiece is a defective product, the workpiece is put down to a defective product area through the rotating disc. And the visual inspection of the whole Q235B workpiece is efficiently and accurately completed.