CN217359657U - Hot-rolled strip steel surface defect detection device based on deep learning - Google Patents
Hot-rolled strip steel surface defect detection device based on deep learning Download PDFInfo
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- CN217359657U CN217359657U CN202220372467.9U CN202220372467U CN217359657U CN 217359657 U CN217359657 U CN 217359657U CN 202220372467 U CN202220372467 U CN 202220372467U CN 217359657 U CN217359657 U CN 217359657U
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- 238000001514 detection method Methods 0.000 title claims abstract description 124
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 95
- 239000010959 steel Substances 0.000 title claims abstract description 95
- 230000007547 defect Effects 0.000 title claims abstract description 36
- 238000013135 deep learning Methods 0.000 title claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 74
- 230000000694 effects Effects 0.000 claims abstract 2
- 230000001360 synchronised effect Effects 0.000 claims description 18
- 125000003003 spiro group Chemical group 0.000 claims description 13
- 238000005098 hot rolling Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000012706 support-vector machine Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013528 artificial neural network Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Abstract
The utility model discloses a hot-rolled strip steel surface defect detection device based on deep learning, which comprises a detection panel, wherein the detection panel comprises a flattening area and a detection area, a hot-rolled strip steel flattening mechanism is arranged on the flattening area, and a detection mechanism, a flattening fixing mechanism and a driving mechanism are arranged on the detection area; the flattening mechanism is arranged at the end part of the flattening area of the detection panel and is matched with the guide vertical plates arranged at the two sides of the detection panel for use; the detection mechanism is arranged on the upper side of the detection area of the detection panel; the leveling fixing mechanisms are arranged on two sides of the detection area of the detection panel and are matched with the hot-rolled strip steel for use; the driving mechanism is arranged on the lower side of the detection panel and is matched with the leveling fixing mechanism for use; the device can effectively fix the strip steel when detecting the surface defects of the strip steel through the arrangement of the flattening mechanism, the detection mechanism, the flattening fixing mechanism and the driving mechanism, prevents the strip steel from bending, and has the characteristics of good fixing effect, high automation degree and high detection precision.
Description
Technical Field
The utility model belongs to the technical field of belted steel check out test set, concretely relates to hot rolling belted steel surface defect detection device based on degree of depth study.
Background
The Hot-rolled strip steel is also called Hot-rolled strip steel, commonly called a Hot plate, and refers to a steel plate with the width less than or equal to 600mm and the thickness of 0.35-200mm and a steel strip with the thickness of 1.2-25 mm; the hot rolled strip steel can generate a plurality of defects with different forms in the production process; the performance of the strip steel depends greatly on the defect condition of the steel surface; therefore, the detection of the appearance quality of the strip steel is one of the important links of the quality control of the strip steel, the appearance quality directly influences the quality grade evaluation of products, and further influences the competitiveness of the products, the traditional strip steel defect detection method always adopts a manual uncoiling sampling inspection method or a stroboscopic detection method to detect the surface quality, namely, the comprehensive quality evaluation of a strip coil is formed by probability calculation and reference to experience data of detection personnel, but the traditional method has a plurality of disadvantages: if (1) the consistency and the scientificity of detection are lacked, the subjective judgment of detection personnel is mainly relied on, different judgments can be obtained for the same defect due to different experience levels of different quality inspection personnel, so that the defect type and the defect grade are inaccurate, and the detection reliability is reduced; (2) the detection environment is severe and boring, the harm to the human body and mind is great, the labor intensity of detection personnel is high, the fatigue is easy to occur, and misjudgment and missed detection are easy to cause;
with the development of computer technology and image processing technology, the automatic detection and identification of the surface quality of the strip steel based on image processing become possible, namely, on the basis of the selection of the feature vector of the defect picture, a BP neural network and a support vector machine are respectively adopted to identify and judge the surface defect of the strip steel, so that the problems existing in the strip steel detection are effectively solved;
however, in the process of detecting the surface defects of the hot-rolled strip steel by using the deep learning algorithm and the support vector machine, a laser instrument is required to be used for detecting the hot-rolled strip steel, when the laser detector is used for carrying out movement detection on the hot-rolled strip steel, the straightness and stability of the hot-rolled strip steel need to be ensured, if the hot-rolled strip steel is bent in the detection process, the diffuse reflection light spots of the hot-rolled strip steel in the detection process are caused to generate displacement, and the accuracy of the flatness detection of the hot-rolled strip steel is influenced;
therefore, it is necessary to design a device capable of detecting the straight and stable movement of the strip steel to solve the above problems in the prior art.
Disclosure of Invention
To the defect that above-mentioned prior art exists, the utility model aims to provide a hot rolling belted steel surface defect detection device based on degree of depth study, through flattening mechanism, detection mechanism, flattening fixed establishment and actuating mechanism's setting, can effectively fix belted steel when belted steel surface defect nature detects, prevent that belted steel is crooked, have fixed effectual, degree of automation height and detect the high characteristics of precision.
In order to achieve the above object, the utility model adopts the following technical scheme:
a hot-rolled strip steel surface defect detection device based on deep learning comprises a detection panel, wherein the detection panel comprises a flattening area and a detection area, a hot-rolled strip steel flattening mechanism is arranged on the flattening area, and a detection mechanism, a flattening fixing mechanism and a driving mechanism are arranged on the detection area;
the flattening mechanism is arranged at the end part of the flattening area of the detection panel and is matched with the guide vertical plates arranged at the two sides of the detection panel for use;
the detection mechanism is arranged on the upper side of the detection area of the detection panel;
the leveling fixing mechanisms are arranged on two sides of the detection area of the detection panel and are matched with the hot-rolled strip steel for use;
the driving mechanism is arranged on the lower side of the detection panel and is matched with the leveling fixing mechanism for use.
Preferably, flattening mechanism include exhibition pinch roller, first driving motor and first drive gear, exhibition pinch roller rotates through first bearing and installs the tip at the detection panel, first drive gear installs the one end tip at exhibition pinch roller, and two first drive gear intermeshing, first driving motor fixed mounting drives two exhibition pinch roller rotations at the other end of exhibition pinch roller.
Preferably, the inner side of the guide vertical plate is further provided with a guide groove, and the guide groove is matched with the flattening roller for use.
Preferably, the detection mechanism comprises a connecting frame and a mounting plate, the connecting frame is mounted on two sides of the detection panel through mounting bolts, an adjusting groove is formed in the connecting frame, and the mounting plate is mounted between the two connecting frames through an adjusting assembly and moves along the adjusting groove; still be provided with laser instrument and hair-dryer on the mounting panel, wherein the hair-dryer symmetry sets up the both sides at the laser instrument.
Preferably, the adjusting assembly comprises a second synchronous motor, a second gear and a second bearing, the second gear is arranged at the driving end of the second synchronous motor and meshed with the rack in the adjusting groove, and the output shaft of the second synchronous motor is connected with the end part of the mounting plate through the second bearing in a rotating mode.
Preferably, the connecting frame is further provided with a clamping groove, a supporting plate is movably clamped in the clamping groove, and the second synchronous motor is fixedly installed on the supporting plate.
Preferably, the flattening fixing mechanism comprises two symmetrically arranged clamping strips, sliding grooves which are communicated with each other are formed in the clamping strips, strip steel clamping pieces are arranged in the sliding grooves in a sliding mode, and the strip steel clamping pieces are matched with hot-rolled strip steel for use.
Preferably, the holding strip downside be provided with the spiro union seat, the spiro union seat uses with the actuating mechanism cooperation, actuating mechanism includes adjusting screw, third motor and chain belt, adjusting screw rotates to be installed at the detection panel downside, and with the spiro union seat spiro union, the adjusting screw middle part is provided with the sprocket and uses with the chain belt cooperation, the third motor sets up between two adjusting screw, and is provided with the third sprocket on the third motor, the third sprocket uses with the chain belt cooperation.
Preferably, the strip steel clamping piece comprises a clamping piece and a clamping piece, the clamping piece is in threaded connection with the clamping piece, a clamping groove is formed in the clamping piece, a threaded piece is installed in the clamping groove in a threaded connection mode, and a clamping plate is arranged at the lower end portion of the threaded piece.
The utility model has the advantages that: the utility model discloses a hot rolling belted steel surface defect detection device based on degree of depth study, compared with the prior art, the utility model discloses an improvement part lies in:
the utility model discloses a hot rolling belted steel surface defect detection device based on degree of depth study, including detecting the panel, the hot rolling belted steel flattening mechanism of setting on detecting the panel, detection mechanism, flatten fixed establishment and actuating mechanism, when using, can flatten the mechanism for the first time to belted steel, can fix and flatten the secondary to belted steel through flattening fixed establishment and actuating mechanism, in order to prevent that belted steel from curling, guarantee belted steel detection precision, carry out reciprocal detection to belted steel surface defect through detection mechanism in real time simultaneously, have fixed effectual, degree of automation is high and detect the high advantage of precision.
Drawings
FIG. 1 is a front view of the hot-rolled strip steel surface defect detecting device based on deep learning of the present invention.
FIG. 2 is the structural schematic diagram of the hot-rolled strip steel surface defect detecting device based on deep learning of the present invention.
Fig. 3 is a schematic structural view of the pressing mechanism of the present invention.
Fig. 4 is a schematic structural diagram of the detection mechanism of the present invention.
Fig. 5 is a side view of the mounting plate of the present invention.
Fig. 6 is a partial enlarged view of the mounting plate a of the present invention.
Fig. 7 is a schematic structural view of the leveling fixing mechanism of the present invention.
Fig. 8 is a schematic structural diagram of the strip steel clamp of the present invention.
Fig. 9 is a bottom view of the detection panel of the present invention.
Fig. 10 is a top view of the detection panel of the present invention.
Wherein: 1. the device comprises a detection panel, 11, a guide vertical plate, 12, a guide groove, 2, a flattening mechanism, 21, a flattening roller, 22, a first bearing, 23, a first driving motor, 24, a first driving gear, 3, a detection mechanism, 31, a connecting frame, 311, an adjusting groove, 312, a clamping groove, 32, a mounting plate, 33, a laser instrument, 34, a blower, 35, a second synchronous motor, 36, a second gear, 37, a second bearing, 4, a leveling fixing mechanism, 41, a clamping strip, 411, a sliding groove, 42, a strip steel clamping piece, 421, 422, a clamping piece, 423, a clamping plate, 424, a screw connector, 5, a driving mechanism, 51, an adjusting screw rod, 52, a third motor, 53, a third chain wheel, 54, a chain belt and 6 of hot rolled strip steel.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.
Example 1: referring to the attached drawings 1-10, the device for detecting the surface defects of the hot-rolled strip steel based on the deep learning comprises a detection panel 1, wherein the detection panel 1 comprises a flattening area and a detection area, a hot-rolled strip steel flattening mechanism 2 is arranged on the flattening area, and a detection mechanism 3, a flattening fixing mechanism 4 and a driving mechanism 5 are arranged on the detection area;
the flattening mechanism 2 is arranged at the end part of the flattening area of the detection panel 1, is used for flattening the hot-rolled strip steel 6 to be detected in the flattening area, and is matched with the guide vertical plates 11 arranged at the two sides of the detection panel 1 for use;
the detection mechanism 3 is arranged on the upper side of the detection area of the detection panel 1 and is used for detecting the hot-rolled strip steel 6 in the detection area;
the leveling fixing mechanisms 4 are arranged on two sides of a detection area of the detection panel 1 and are used for fixing the hot-rolled strip steel 6;
the driving mechanism 5 is arranged at the lower side of the detection panel 1 and is matched with the leveling fixing mechanism 4 for use, so that the hot rolled strip 6 is leveled and fixed, and the detection precision of the detection mechanism 3 is ensured.
Preferably, the guide vertical plate 11 is used in cooperation with the flattening mechanism 2, the flattening mechanism 2 includes a pair of flattening rollers 21, a first driving motor 23 and a first driving gear 24, the flattening rollers 21 are all rotatably mounted at the end of the detection panel 1 through a first bearing 22, the first driving gear 24 is mounted at one end of the flattening roller 21, and the two first driving gears 24 are meshed with each other, the first driving motor 23 is fixedly mounted at the other end of the flattening roller 21, and when the detection device is used, the first driving motor 23 drives the two flattening rollers 21 to rotate so as to roughly flatten the hot rolled strip steel 6 to be detected before detection, and the flattened hot rolled strip steel 6 enters the flattening area of the detection panel 1.
Preferably, in order to guide the flattened hot rolled strip 6, a guide groove 12 is further provided inside the guide vertical plate 11, and the guide groove 12 is used in cooperation with the flattening roller 21 to convey and guide the hot rolled strip 6.
Preferably, the detection mechanism 3 is arranged on the upper side of the detection area of the detection panel 1, and includes a connection frame 31 and a mounting plate 32, the connection frame 31 is mounted on two sides of the detection panel 1 through mounting bolts, and an adjustment groove 311 is arranged on the connection frame 31, and the mounting plate 32 is mounted between the two connection frames 31 through an adjustment assembly and moves along the adjustment groove 311; in addition, in order to facilitate detection, a laser instrument 33 and a blower 34 are further arranged on the mounting plate 32, wherein the blower 34 is symmetrically arranged on two sides of the laser instrument 33, when the device is used, the laser instrument 33 (in the prior art, the working principle of the device is not explained in the text) is used for detecting the defects of cracks, inclusions, patches, pits, pressed iron scales, scratches and the like on the surface of the hot-rolled strip steel 6, and the blower 34 is used for cleaning the surface of the hot-rolled strip steel 6 and avoiding the influence of dust on the surface of the hot-rolled strip steel 6 on the accuracy of detection data.
Preferably, in order to realize the dynamic detection of the laser instrument 33 on the surface defect of the hot rolled strip 6, the adjusting component includes a second synchronous motor 35, a second gear 36 and a second bearing 37, the second gear 36 is arranged at the driving end of the second synchronous motor 35 and is meshed with the rack in the adjusting groove 311, the output shaft of the second synchronous motor 35 is rotatably connected with the end of the mounting plate 32 through the second bearing 37, namely, when the laser instrument is used, the second synchronous motor 35 drives the second gear 36 to rotate, and then the mounting plate 32 is driven to move along the adjusting groove 311, so as to drive the laser instrument 33 to dynamically detect the surface defect of the hot rolled strip 6.
Preferably, in order to fix the second synchronous motor 35, a clamping groove 312 is further disposed on the connecting frame 31, a supporting plate 37 is movably clamped in the clamping groove 312, the second synchronous motor 35 is fixedly mounted on the supporting plate 37, and when the second synchronous motor 35 moves horizontally, the supporting plate 37 moves horizontally in the clamping groove 312 along with the second synchronous motor 35.
Preferably, when in use, in order to fix the hot-rolled strip 6, the leveling fixing mechanism 4 comprises two symmetrically arranged clamping bars 41, the clamping bars 41 are provided with mutually communicated sliding grooves 411, strip steel clamping pieces 42 are slidably mounted in the sliding grooves 411, and the strip steel clamping pieces 42 are matched with the hot-rolled strip 6 for use to clamp and clamp the edges of the hot-rolled strip 6; and a screw base 412 is arranged at the lower side of the clamping bar 41, the screw base 412 is matched with the driving mechanism 5 for use, the driving mechanism 5 is arranged at the lower side of the detection panel 1 and comprises an adjusting screw 51, a third motor 52 and a chain belt 54, the adjusting screw 51 is rotatably arranged at the lower side of the detection panel 1, and is screwed with the screw base 412, and the middle part of the adjusting screw 51 is provided with a chain wheel which is matched with the chain belt 54, the third motor 52 is arranged between the two adjusting screws 51, and a third chain wheel 53 is arranged on the third motor 52, the third chain wheel 53 is matched with a chain belt 54 for use, when the device is used, the third motor 52 drives the two adjusting screws 51 to rotate, so that the two holding bars 41 at the two sides are driven to move away from or towards each other by the interaction force between the adjusting screws 51 and the screw base 412, and the hot rolled strip 6 is fixed and leveled.
Preferably, to facilitate adjustment of the movement of the two gibs 41 away from or towards each other, the threads provided at the two ends of the adjustment screw 51 are in opposite directions.
Example 2: different from embodiment 1, be convenient for right hot rolled strip 6 fixes, the dismantlement of the strip steel clamp 42 of being convenient for simultaneously is maintained, strip steel clamp 42 include fastener 421 and holder 422, fastener 421 and holder 422 spiro union coupling, just be provided with the clamp groove on the holder 422, the spiro union 424 is installed to the spiro union in the clamp groove, the lower tip of spiro union 424 is provided with splint 423, through hanging spiro union 424 during the use for splint 423 presss from both sides hot rolled strip 6 tightly, fixes hot rolled strip 6.
Preferably, in order to be conveniently matched with the guide groove 12 for use, so that the hot rolled strip 6 can be smoothly transited, the opening height and the width of the clamping groove are the same as those of the guide groove 12.
Preferably, the threaded member 424 is a threaded bolt.
The application principle and the using process of the deep learning-based hot-rolled strip steel surface defect detection device in the embodiment 1 and the embodiment 2 comprise the following steps:
firstly, debugging the laser instrument 33 and the blower 34 before detection to ensure that the laser instrument and the blower are in a normal use state; secondly, the strip steel 6 to be hot-rolled is conveyed between two flattening rollers 21 through a feeding mechanism, a first driving motor 23 is started, the two flattening rollers 21 are used for preliminarily flattening the strip steel 6 to be hot-rolled by utilizing the transmission action of the first driving motor 23, the hot-rolled strip steel 6 after preliminary flattening gradually enters a guide groove 12, when the hot-rolled strip steel 6 completely enters a detection area, two sides of the hot-rolled strip steel 6 are clamped in clamping grooves, and the hot-rolled strip steel 6 is clamped by clamping plates 423 by rotating a screw 424 to fix the hot-rolled strip steel 6; after the hot-rolled strip steel 6 is fixed, whether the third motor 52 is started to work or not is determined according to requirements so as to further flatten the hot-rolled strip steel 6; and finally, turning on the second synchronous motor 35 to drive the mounting plate 32 to move along the adjusting groove 311, so as to drive the laser instrument 33 to dynamically detect the surface defects of the hot-rolled strip steel 6, and after the detection is finished, taking down the hot-rolled strip steel 6 and replacing a piece of hot-rolled strip steel 6 for detection.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a hot rolling belted steel surface defect detection device based on degree of deep learning which characterized in that: the device comprises a detection panel, wherein the detection panel comprises a flattening area and a detection area, a hot-rolled strip steel flattening mechanism is arranged on the flattening area, and a detection mechanism, a flattening fixing mechanism and a driving mechanism are arranged on the detection area;
the flattening mechanism is arranged at the end part of the flattening area of the detection panel and is matched with the guide vertical plates arranged at the two sides of the detection panel for use;
the detection mechanism is arranged on the upper side of the detection area of the detection panel;
the leveling fixing mechanisms are arranged on two sides of the detection area of the detection panel and are matched with the hot-rolled strip steel for use;
the driving mechanism is arranged on the lower side of the detection panel and is matched with the leveling fixing mechanism for use;
the flattening mechanism comprises a flattening roller, a first driving motor and a first driving gear, the flattening roller is rotatably mounted at the end part of the detection panel through a first bearing, the first driving gear is mounted at the end part of one end of the flattening roller, the two first driving gears are meshed with each other, and the first driving motor is fixedly mounted at the other end of the flattening roller and drives the two flattening rollers to rotate;
the inner side of the guide vertical plate is also provided with a guide groove, and the guide groove is matched with the flattening roller for use.
2. The deep learning-based hot-rolled strip steel surface defect detection device according to claim 1, characterized in that: the detection mechanism comprises connecting frames and a mounting plate, the connecting frames are mounted on two sides of the detection panel through mounting bolts, adjusting grooves are formed in the connecting frames, and the mounting plate is mounted between the two connecting frames through an adjusting assembly and moves along the adjusting grooves; still be provided with laser instrument and hair-dryer on the mounting panel, wherein the hair-dryer symmetry sets up the both sides at the laser instrument.
3. The deep learning-based hot-rolled strip steel surface defect detection device according to claim 2, characterized in that: the adjusting assembly comprises a second synchronous motor, a second gear and a second bearing, the second gear is arranged at the driving end of the second synchronous motor and meshed with the rack in the adjusting groove, and the output shaft of the second synchronous motor is rotatably connected with the end part of the mounting plate through the second bearing.
4. The deep learning-based hot-rolled strip steel surface defect detection device according to claim 3, characterized in that: the connecting frame on still be provided with the draw-in groove, the activity card is equipped with the layer board in the draw-in groove, second synchronous machine fixed mounting is on the layer board.
5. The hot-rolled strip steel surface defect detection device based on deep learning of claim 1, characterized in that: the flattening fixing mechanism comprises two symmetrically arranged clamping strips, sliding grooves which are communicated with each other are formed in the clamping strips, strip steel clamping pieces are arranged in the sliding grooves in a sliding mode, and the strip steel clamping pieces are matched with hot-rolled strip steel for use.
6. The deep learning-based hot-rolled strip steel surface defect detection device according to claim 5, characterized in that: holding strip downside be provided with the spiro union seat, the spiro union seat uses with actuating mechanism cooperation, actuating mechanism includes adjusting screw, third motor and chain belt, adjusting screw rotates to be installed at the detection panel downside, and with the spiro union seat spiro union, the adjusting screw middle part is provided with the sprocket and uses with the chain belt cooperation, the third motor sets up between two adjusting screw, and is provided with the third sprocket on the third motor, the third sprocket uses with the chain belt cooperation.
7. The deep learning-based hot-rolled strip steel surface defect detection device according to claim 5, characterized in that: the strip steel clamping piece comprises a clamping piece and a clamping piece, the clamping piece is in threaded connection with the clamping piece, a clamping groove is formed in the clamping piece, a threaded piece is installed in the clamping groove in a threaded connection mode, and a clamping plate is arranged at the lower end portion of the threaded piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220372467.9U CN217359657U (en) | 2022-02-24 | 2022-02-24 | Hot-rolled strip steel surface defect detection device based on deep learning |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220372467.9U CN217359657U (en) | 2022-02-24 | 2022-02-24 | Hot-rolled strip steel surface defect detection device based on deep learning |
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| CN217359657U true CN217359657U (en) | 2022-09-02 |
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| CN202220372467.9U Expired - Fee Related CN217359657U (en) | 2022-02-24 | 2022-02-24 | Hot-rolled strip steel surface defect detection device based on deep learning |
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