1. A surface defect detecting apparatus, comprising;

a frame (100);

the first detection position (1) is arranged on the rack (100) and is used for detecting a first workpiece;

the second detection position (2) is arranged on the rack (100) and is used for detecting a second workpiece;

the moving assembly (4) is arranged on the rack (100), and the moving assembly (4) is used for transferring the first workpiece to the position below the first detection position (1) and transferring the second workpiece to the position below the second detection position (2); the outer diameter of the second workpiece is smaller than that of the first workpiece; the distance between the second detection position (2) and the moving assembly (4) is smaller than the distance between the first detection position (1) and the moving assembly (4);

the third detection position (3) is arranged on the machine frame (100) and is used for detecting the first workpiece and the second workpiece;

and the mechanical arm (51) is arranged on the rack (100) and is used for transferring the first workpiece and the second workpiece to the position above the third detection position (3).

2. A surface defect detecting apparatus according to claim 1, characterized in that the first detecting station (1) comprises:

the first light supplement lamp (11) and the second light supplement lamp (12) are arranged on the rack (100) and are respectively arranged on two sides of the first camera (18); and light rays of the first light supplement lamp (11) and the second light supplement lamp (12) are respectively converged on the first workpiece from two sides of the first camera (18).

3. The surface defect detection apparatus of claim 2, wherein the first detection site (1) further comprises:

the first light bracket (13) and the second light bracket (14) are hinged to the rack (100) and are respectively used for mounting the first light supplement lamp (11) and the second light supplement lamp (12);

the two ends of the push rod motor (15) are respectively and rotatably connected with the two sliding blocks (16), and the two sliding blocks (16) are respectively and slidably connected with the first light bracket (13) and the second light bracket (14);

the first brake component (17) is arranged on the rack (100) and used for locking the first light bracket (13) on the rack (100).

4. The surface defect detection device of claim 3, wherein a plurality of grooves (131) are uniformly distributed at one end of the first light bracket (13) hinged with the rack (100) in the direction of a hinged shaft;

the first brake assembly (17) comprises:

the clamping piece (171), clamping piece (171) slide and locate frame (100), have stretch into the braking position of recess (131) and with the release position of recess (131) separation.

5. A surface defect detecting apparatus according to claim 4, characterized in that the first brake assembly (17) further comprises:

adsorb piece (172), adsorb piece (172) and locate frame (100) for adsorb joint spare (171) extremely release position.

6. A surface defect detection apparatus according to claim 4, characterized in that the first detection site (1) further comprises:

the second brake assembly is arranged on the rack (100) and used for locking the second light bracket (14) on the rack (100).

7. The surface defect detecting apparatus according to any one of claims 2-6, wherein the brightness of the first supplementary light (11) and the second supplementary light (12) can be adjusted.

8. Surface defect detection apparatus according to claim 7, characterized in that said moving assembly (4) comprises:

the screw rod is rotatably arranged on the rack (100);

the power piece (41), the power piece (41) is in transmission connection with the screw rod;

the nut is in transmission connection with the screw rod;

the sliding plate (42) is arranged on the frame (100) in a sliding mode and fixedly connected with the nut, and the first workpiece and the second workpiece are placed on the sliding plate (42).

9. The surface defect inspection apparatus of claim 1, wherein the first inspection station (1) further comprises a first lift assembly for mounting a first camera (18) and adjusting a distance between the first camera (18) and the first workpiece.

10. The surface defect inspection apparatus of claim 1, wherein the second inspection station (2) further comprises a second lifting assembly for mounting a second camera (21) and adjusting the distance between the second camera (21) and the second workpiece.

Background

The sheet metal is a comprehensive cold processing technology aiming at sheet metal (generally below 6 mm), and comprises shearing, punching, cutting, compounding, folding, welding, riveting, splicing and the like. The remarkable characteristic is that the thickness of the same part is consistent.

In the prior art, set up the detection camera at the detection position, detect and measure the quality on sheet metal component surface, but when the size of the sheet metal component that needs to detect changes, need adjust the detection station, need change the detection camera sometimes, so that the camera of detection station can carry out the accuracy to the sheet metal component and shoot, this process operation is loaded down with trivial details, in addition, current check out test set can only detect a position of sheet metal component, if need detect other positions of sheet metal component, need manual upset sheet metal component, and then influence detection efficiency.

Disclosure of Invention

The invention aims to provide surface defect detection equipment to solve the problem that detection efficiency is low due to the fact that the detection equipment needs to be debugged in a complicated mode and sheet metal parts need to be turned over manually when sheet metal parts different in size are replaced in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the present invention provides a surface defect detecting apparatus including:

a frame;

the first detection position is arranged on the rack and used for detecting a first workpiece;

the second detection position is arranged on the rack and used for detecting a second workpiece;

the moving assembly is arranged on the rack and is positioned below the first detection position and the second detection position, and the moving assembly is used for transferring the first workpiece to the position below the first detection position and transferring the second workpiece to the position below the second detection position; the outer diameter of the second workpiece is smaller than that of the first workpiece; the distance between the second detection position and the moving assembly is smaller than the distance between the first detection position and the moving assembly;

the third detection position is arranged on the rack and used for detecting the first workpiece and the second workpiece;

and the mechanical arm is arranged on the rack and used for transferring the first workpiece and the second workpiece to the position above the third detection position.

As a preferable aspect of the surface defect detecting apparatus, the first detection position includes:

the first light supplement lamp and the second light supplement lamp are arranged on the frame and are respectively arranged on two sides of the first camera; and light rays of the first light supplement lamp and the second light supplement lamp are respectively converged on the first workpiece from two sides of the first camera.

As a preferable aspect of the surface defect detecting apparatus, the first detecting unit further includes:

the first light supplement lamp and the second light supplement lamp are respectively used for installing the first light supplement lamp and the second light supplement lamp;

the two ends of the push rod motor are respectively and rotatably connected with the two sliding blocks, and the two sliding blocks are respectively and slidably connected with the first light bracket and the second light bracket;

the first brake assembly is arranged on the rack and used for locking the first lamplight support on the rack.

As a preferred scheme of the surface defect detection device, a plurality of grooves are uniformly distributed at one end of the first lamplight bracket, which is hinged with the rack, in the direction around the hinged shaft;

the first brake assembly includes:

the clamping piece is arranged on the rack in a sliding mode and provided with a braking position extending into the groove and a releasing position separated from the groove.

As a preferable aspect of the surface defect detecting apparatus, the first brake assembly further includes:

the adsorption piece is arranged on the rack and used for adsorbing the clamping piece to the release position.

As a preferable aspect of the surface defect detecting apparatus, the first detecting unit further includes:

and the second brake component is arranged on the rack and used for locking the second lamplight bracket on the rack.

As a preferable scheme of the surface defect detection device, the brightness of the first light supplement lamp and the brightness of the second light supplement lamp can be adjusted.

As a preferable aspect of the surface defect detecting apparatus, the moving assembly includes:

the screw rod is rotatably arranged on the rack;

the power part is in transmission connection with the screw rod;

the nut is in transmission connection with the screw rod;

the sliding plate is arranged on the rack in a sliding mode and fixedly connected with the nut, and the first workpiece and the second workpiece are placed on the sliding plate.

As a preferable mode of the surface defect detecting apparatus, the first detecting station further includes a first elevating assembly for installing a first camera and adjusting a distance between the first camera and the first workpiece.

As a preferable mode of the surface defect detecting apparatus, the second detecting station further includes a second elevating assembly for mounting a second camera and adjusting a distance between the second camera and the second workpiece.

The invention has the beneficial effects that:

the invention provides a surface defect detection device, which is used for detecting sheet metal parts with different sizes by arranging a first detection position and a second detection position, clamping the sheet metal parts which are detected at the first detection position and the second detection position by arranging a manipulator and transferring the sheet metal parts to the upper part of a third detection position so as to detect other areas of the sheet metal parts. This surface defect check out test set can measure and detect the sheet metal component that the size is different simultaneously, and through manipulator upset sheet metal component, has improved detection efficiency.

Drawings

FIG. 1 is a schematic structural diagram of a surface defect inspection apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a connection relationship between a first light bracket and a rack according to an embodiment of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 1 according to an embodiment of the present invention.

In the figure:

100. a frame; 101. a hole;

1. a first detection bit; 11. a first fill-in light; 12. a second fill-in light; 13. a first light bracket; 131. a groove; 14. a second light bracket; 15. a push rod motor; 16. a slider; 17. a first brake assembly; 171. a clamping piece; 172. an adsorbing member; 173. an elastic member; 18. a first camera;

2. a second detection bit; 21. a second camera;

3. a third detection position; 31. a third camera;

4. a moving assembly; 41. a power member; 42. a sliding plate;

51. a manipulator; 52. a conveyor belt; 53. an alarm lamp; 54. a grating; 55. a printer.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Where the terms "first position" and "second position" are two different positions, and where a first feature is "over", "above" and "on" a second feature, it is intended that the first feature is directly over and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 3, the present embodiment provides a surface defect detecting apparatus, which includes a frame 100, wherein the frame 100 is provided with a first detecting position 1, a second detecting position 2, a third detecting position 3, a moving assembly 4 and a robot 51, wherein the first detecting position 1 is used for detecting a first workpiece; the second inspection station 2 is used for inspecting a second workpiece. The moving assembly 4 is positioned below the first detection position 1 and the second detection position 2, the moving assembly 4 is used for transferring the first workpiece to the position below the first detection position 1, and the moving assembly 4 is used for transferring the second workpiece to the position below the second detection position 2; the outer diameter of the second workpiece is smaller than the outer diameter of the first workpiece. The distance between the second detection position 2 and the moving assembly 4 is smaller than the distance between the first detection position 1 and the moving assembly 4; the distances between the first detection position 1 and the second detection position 2 and the moving assembly 4 are vertical distances, so that the distance between the second camera 21 in the second detection position 2 and the second workpiece is smaller than the distance between the first camera 18 in the first detection position 1 and the first workpiece. The third detection site 3 is used for detecting the first workpiece and the second workpiece, i.e. the third detection site 3 can be used for detecting both the first workpiece and the second workpiece. The robot 51 is configured to transfer the first workpiece and the second workpiece to the position above the third inspection position 3, that is, the robot 51 can transfer both the first workpiece and the second workpiece to the positions above the third inspection position 3.

In this embodiment, the surface defect detecting apparatus detects workpieces of different sizes by setting the first detecting position 1 and the second detecting position 2, and clamps and transfers the workpieces detected at the first detecting position 1 and the second detecting position 2 to the upper side of the third detecting position 3 by setting the manipulator 51, so as to detect other regions of the workpieces. This surface defect check out test set can measure and detect the sheet metal component that the size is different simultaneously, and overturns the sheet metal component through manipulator 51, has improved detection efficiency.

The distance between the second camera 21 in the second detection position 2 and the second workpiece is smaller than the distance between the first camera 18 in the first detection position 1 and the first workpiece, so that when workpieces with different outer diameters are detected, complete shooting can be achieved, focusing can be achieved accurately, and cost is saved.

In this embodiment, the first workpiece and the second workpiece are two types of sheet metal parts with different outer diameters, and for convenience of description, the sheet metal parts are used for description, but of course, in other embodiments, the invention is not limited thereto.

In the actual work process, because the setting of production line, multiple sheet metal component can be produced simultaneously, therefore in the testing process, often need detect the sheet metal component of two kinds or multiple equidimensions not, present method, for reduce cost, use same platform equipment to detect different sheet metal components, but need when changing the kind of sheet metal component, debug check-out equipment or change the camera to satisfy the detection demand of sheet metal component of different sizes, consequently, detection efficiency has been influenced.

In this embodiment, can be according to the size of the sheet metal component of two kinds of not equidimensions, after debugging equipment, accomplish the detection achievement of the sheet metal component of two kinds of not equidimensions simultaneously in turn, need not to carry out the secondary debugging to equipment midway, detection efficiency improves greatly.

In addition, when manipulator 51 shifts the sheet metal component to third detection position 3, be located the third and detect position 3's top, at this moment, need not overturn to the sheet metal component and can accomplish the detection at the back, when the side of sheet metal component need be detected, only need overturn 90 degrees can, further improved detection efficiency. In addition, the sheet metal part does not need to be placed on the carrier, and the detection efficiency is further improved.

In this embodiment, optionally, the first detection position 1 includes a first supplementary lighting lamp 11 and a second supplementary lighting lamp 12, the first supplementary lighting lamp 11 and the second supplementary lighting lamp 12 are both disposed on the rack 100 and are respectively disposed on two sides of the first camera 18, optionally, the first supplementary lighting lamp 11 is located on the left side of the first camera 18, and the second supplementary lighting lamp 12 is located on the right side of the first camera 18; the light of the first light supplement lamp 11 and the light of the second light supplement lamp 12 are respectively converged on the sheet metal part by two sides of the first camera 18. With the help of the above arrangement, when detecting the sheet metal component, turn on first light filling lamp 11 earlier, turn on second light filling lamp 12 afterwards, turn on first light filling lamp 11 and second light filling lamp 12 simultaneously at last to accomplish the detection to the crackle of different gradients on the sheet metal component. It should be noted that, when the crack inclines leftward from the surface of the sheet metal part toward the inside, the crack is easy to be found after being irradiated by the first fill-in light 11.

In this embodiment, the specific turning-on mode of the first light supplement lamp 11 and the second light supplement lamp 12 may also be determined according to the structure of the sheet metal part. For example, when there is a protruding structure on the left side of the sheet metal part, the image shot when the first light supplement lamp 11 on the left side is turned on is taken as an inspection object, and the influence of the protruding structure on the sheet metal part on the shot image can be avoided. In addition, in other embodiments, when a protruding structure is located on the right side of the sheet metal part, turning on the first light supplement lamp 11 on the left side results in a long shadow of the protruding structure, and defects of the sheet metal part located below the shadow are not easy to detect. When the second light supplement lamp 12 is turned on, the shadow is shortened or even eliminated, and the detection success rate of the surface defects around the raised structure of the sheet metal part is improved.

Further, the first detection position 1 further comprises a first light bracket 13, a second light bracket 14, a push rod motor 15 and a first brake assembly 17, wherein the first light bracket 13 and the second light bracket 14 are hinged to the rack 100 and are respectively used for installing a first light supplement lamp 11 and a second light supplement lamp 12; two ends of the push rod motor 15 are respectively and rotatably connected with the two sliding blocks 16, and the two sliding blocks 16 are respectively and slidably connected with the first light bracket 13 and the second light bracket 14; preferably, the first light bracket 13 and the second light bracket 14 are both provided with a guide rail, and the sliding block 16 is slidably connected with the guide rail; the first brake assembly 17 is disposed on the rack 100, and the first brake assembly 17 is used for locking the first light bracket 13 to the rack 100. With the help of the above arrangement, the first brake component 17 acts, and when the push rod motor 15 stretches out to act, the second light bracket 14 can only be pushed to the direction far away from the first light bracket 13, and at the moment, the inclination of the light of the second light supplement lamp 12 is reduced. When first braking subassembly 17 stops working, first light support 13 and second light support 14 resume balanced position under the action of gravity, and at this moment, the gradient of the light of first light filling lamp 11 reduces, and the gradient of the light of second light filling lamp 12 increases, and the gradient of the light of first light filling lamp 11 and second light filling lamp 12 is equal at last, and is symmetrical for the vertical direction.

Regarding the structure of the first braking component 17, in this embodiment, optionally, a plurality of grooves 131 are uniformly distributed at one end of the first light bracket 13 hinged to the frame 100 around the direction of the hinged shaft; that is, the end of the first light bracket 13 hinged to the frame 100 is arc-shaped, and a plurality of grooves 131 are uniformly distributed on the arc surface. The first braking component 17 comprises a clamping member 171, the clamping member 171 is slidably arranged on the frame 100, and the clamping member 171 has a braking position extending into the groove 131 and a releasing position separated from the groove 131. Wherein, in joint member 171 can rely on self gravity gliding to recess 131, can take out joint member 171 when needing to adjust first light support 13 can. With the above arrangement, the fixing and releasing of the first lamp holder 13 are achieved.

Further, the first brake assembly 17 further includes an absorption member 172, and the absorption member 172 is disposed on the frame 100 and is used for absorbing the clamping member 171 to the release position. The clamping member 171 can realize automatic control in the process from the braking position to the releasing position by the arrangement of the adsorption member 172, so that the adjusting efficiency of the first light bracket 13 and the second light bracket 14 is improved, and the detection efficiency is further improved. Optionally, the adsorbing member 172 is an electromagnet.

Furthermore, the first braking assembly 17 further includes an elastic member 173, the elastic member 173 is disposed between the engaging member 171 and the frame 100, and the elastic member 173 stops the engaging member 171 at the braking position. The elastic member 173 is preferably a tension spring, and the elastic member 173 prevents the locking member 171 from being locked in the release position, thereby improving the reliability of the first brake assembly 17.

Still further, in this embodiment, the surface defect detecting apparatus further includes a second braking component, and the second braking component is disposed on the rack 100 and is used for locking the second light holder 14 to the rack 100. The setting of second braking component makes first light support 13 and second light support 14 can adjust alone, has further improved the regulation efficiency to the light angle of first light filling lamp 11 and the light angle of second light filling lamp 12. Specifically, when the first brake assembly 17 brakes, the second brake assembly does not brake, and at this time, when the push rod motor 15 extends, the second light bracket 14 rotates. When the second brake component brakes, the first brake component 17 does not brake, and at the moment, when the push rod motor 15 extends to act, the first light bracket 13 rotates.

It should be noted that the structure of the second brake assembly is the same as that of the first brake assembly 17, the structure of the second light bracket 14 is the same as that of the first light bracket 13, and the specific structure and the matching relationship are not described herein again.

In the actual work process, because the reason of environment and sheet metal component color and luster, illumination luminance difference that the testing process needs, luminance too high can lead to defect edges such as the profile and the mar of sheet metal component fuzzy, luminance crosses lowly can lead to not seeing clearly the sheet metal component. For this reason, in this embodiment, the brightness of the first fill-in lamp 11 and the brightness of the second fill-in lamp 12 can be optionally adjusted. With the help of the above arrangement, the detection of different sheet metal parts with different colors in the environment can be adapted.

Optionally, the surface defect detecting apparatus further includes a controller and a photosensitive sensor, and the controller is connected to the photosensitive sensor, the first light supplement lamp 11 and the second light supplement lamp 12 to control the brightness of the first light supplement lamp 11 and the second light supplement lamp 12. It should be noted that the structure and operation principle of the controller and the photosensitive sensor are well known to those skilled in the art, and the detailed structure and operation principle are not described herein.

Optionally, the first detection position 1 includes a first camera 18, the second detection position 2 includes a second camera 21, the third detection position 3 includes a third camera 31, the first camera 18, the second camera 21 and the third camera 31 are all disposed on the rack 100, the first camera 18 is used for shooting sheet metal parts with large sizes, and the second camera 21 is used for shooting sheet metal parts with small sizes. Due to the presence of the robot arm 51, the sheet metal part can be moved to any position. Therefore, the third camera 31 is used to photograph various sizes of sheet metal parts.

Optionally, the frame 100 is provided with a hole 101, and the third camera 31 is provided in the frame 100 and shoots the sheet metal part through the hole 101. This setting makes third camera 31 be located inside frame 100, avoids receiving external striking, improves factor of safety.

Further, the inner diameter of the hole 101 is smaller than the outer diameter of the sheet metal part. This setting makes the sheet metal component can not pass through hole 101, and then drops when the sheet metal component testing process, can avoid causing destruction to third camera 31, has further improved third camera 31's factor of safety.

Alternatively, the moving assembly 4 comprises a screw rod, a power member 41, a nut and a sliding plate 42, wherein the screw rod is rotatably arranged on the frame 100; the power part 41 is in transmission connection with the screw rod; the nut is in transmission connection with the screw rod; the sliding plate 42 is slidably disposed on the frame 100 and fixedly connected to the nut, and the sheet metal member is placed on the sliding plate 42. With the help of the above arrangement, the position transfer of the sheet metal part is realized.

Preferably, the first detection position 1 further comprises a first lifting assembly, and the first lifting assembly is used for installing the first camera 18 and adjusting the distance between the first camera 18 and the sheet metal part. Specifically, the first lifting assembly includes a first power component and a first sliding component, the first sliding component is slidably disposed on the rack 100, the first power component is in transmission connection with the first sliding component, and the first camera 18 is disposed on the first sliding component. This arrangement enables adjustment of the elevation of the first camera 18, facilitating focusing of the first camera 18. Meanwhile, the thickness range of the sheet metal part detected by the first camera 18 is expanded.

Preferably, the second detection position 2 further comprises a second lifting component, and the second lifting component is used for installing the second camera 21 and adjusting the distance between the second camera 21 and the sheet metal part. Specifically, the second lifting assembly includes a second power component and a second sliding component, the second sliding component is slidably disposed on the frame 100, the second power component is in transmission connection with the second sliding component, and the second camera 21 is disposed on the second sliding component. This arrangement realizes the elevation adjustment of the second camera 21, facilitating focusing. Meanwhile, the thickness range of the sheet metal part detected by the second camera 21 is expanded.

Optionally, the surface defect detecting apparatus further includes a conveyor belt 52, and after the detection at the third detection position 3 is completed, the sheet metal part is placed on the conveyor belt 52 by the manipulator 51. The conveyor 52 transports the sheet metal part to the next station.

Optionally, the surface defect detecting device further comprises a printer 55, and if the sheet metal part is unqualified in the detecting process, the printer 55 prints an unqualified detecting result so as to facilitate subsequent analysis.

In this embodiment, surface defect check out test set still includes alarm lamp 53, and alarm lamp 53 includes yellow lamp and green lamp, and yellow lamp and green lamp are used for instructing respectively that the detection is accomplished and can place the sheet metal component that waits to detect. Further, the warning light 53 also includes a red light for indicating that the first detection position 1 or the second detection position 2 of the device is detecting.

Optionally, the second detection position 2 includes a third fill-in light and a fourth fill-in light. The mounting manners of the third light supplement lamp and the fourth light supplement lamp are the same as those of the first light supplement lamp 11 and the second light supplement lamp 12 in the first detection position 1, and the specific structure and mounting manner are not described herein again.

Optionally, the surface defect detecting apparatus further includes a light barrier 54, and the light barrier 54 is disposed on the frame 100 and is used for detecting whether the hand of the worker is in the position for placing the sheet metal part. This arrangement improves the safety of the apparatus.

Optionally, the surface defect detecting apparatus further comprises a database, and the database can record the detection information. The detection result can be conveniently searched and traced in the later period. The connection relationship between the controller and the database, the moving assembly 4, the manipulator 51, the conveyor belt 52, the alarm lamp 53, the grating 54, the printer 55, the first detection position 1, the second detection position 2, the third detection position 3, and the like, and the control method are common knowledge for those skilled in the art, and therefore, the detailed description thereof is omitted.

Regarding the use method of the surface defect detection device, the method comprises the following steps:

1. the green light is on, and the sheet metal part is placed on the sliding plate 42; preferably, the carriers can be placed on a slide plate 42.

2. The moving assembly 4 transports the sheet metal part to the first detection position 1 or the second detection position 2, when the sheet metal part is transported to the first detection position 1, the first light supplement lamp 11 and/or the second light supplement lamp 12 are/is lightened, image acquisition and processing are completed, and when the sheet metal part is transported to the second detection position 2, image acquisition and processing are completed.

3. The moving assembly 4 moves the sheet metal part to a grabbing position where the manipulator 51 can grab, wherein the grabbing position is preferably the second detection position 2, namely below the second camera 21; the manipulator 51 grabs the sheet metal part.

4. The manipulator 51 transfers the sheet metal part to the position above the third detection position 3, and finishes image acquisition and processing; at the same time, the moving assembly 4 resets the sliding plate 42 to the sheet metal part placing position to place the next sheet metal part.

5. The manipulator 51 transfers the sheet metal part detected at the third detection position 3 to the conveyor belt 52, and the conveyor belt 52 conveys the sheet metal part to the picking position of the worker.

6. The yellow light is on, and the staff takes away the sheet metal component.

In step 2 or 4, if an unqualified sheet metal part is detected, the detection result is printed out by the printer 55.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.