Carbon fiber part surface defect image acquisition device
Technical Field
The utility model relates to the technical field of scratch defect detection of composite material automobile parts, in particular to a carbon fiber part surface defect image acquisition device.
Background
In the production of carbon fiber prepreg and the film blowing process of molded parts (such as the Chinese patent with application number CN 201910748189.5), the molded parts are very easy to scratch due to the influence of factors such as process parameters, process operation and the like, and the product quality is reduced. Aiming at the detection of scratch defects of formed carbon fiber automobile parts, at present, production enterprises generally adopt a manual visual method on a production line, but due to factors such as mental states of detection workers, quality inspection site environments and the like, the problems of low detection efficiency, missed inspection and the like exist in manual detection of formed carbon fiber parts.
The scratch is a manufacturing defect of a common carbon fiber composite automobile part, and in the process of detecting the scratch by using a detection method based on machine vision, an image on the surface of a part needs to be shot by an image acquisition device firstly, however, the existing image acquisition device cannot overcome the influence of high reflection on the surface of the carbon fiber part, so that the acquired image has a high reflection area, the detection precision of the detection method based on machine vision is low, and the condition of false detection or missing detection occurs. Therefore, in order to improve the accuracy of the scratch detection method based on machine vision, a carbon fiber part surface defect image acquisition device capable of overcoming the influence of high light reflection on the surface of the carbon fiber part is urgently needed.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need to provide an image capturing device for surface defects of carbon fiber parts, which can overcome the influence of high light reflection on the surface of the carbon fiber parts.
In order to achieve the purpose, the utility model provides a carbon fiber part surface defect image acquisition device which comprises a polishing mechanism and a camera, wherein the polishing mechanism comprises a cover light source and a strip-shaped light source, the cover light source is arranged above the carbon fiber part and is used for polishing the carbon fiber part, the strip-shaped light source is arranged on the side of the carbon fiber part and is used for polishing the carbon fiber part, and the camera is arranged in the center of the cover light source and is used for acquiring an image of the carbon fiber part.
Preferably, the light emitting mechanism further comprises a first position adjusting mechanism, and the first position adjusting mechanism is connected with the cover light source and is used for driving the cover light source to move.
Preferably, the first position adjusting mechanism includes a first lifting plate, a first lifting adjusting member and a slide bar, the first lifting plate is provided with a guide hole extending along the horizontal direction, the first lifting adjusting member is connected with the first lifting plate and used for driving the first lifting plate to move up and down, the slide bar is slidably inserted into the guide hole, and the slide bar is fixedly connected with the cover light source.
Preferably, the first lifting plate is provided with a first screw hole extending along the vertical direction; the first lifting adjusting piece comprises a first bottom plate, a first vertical rod, a first top plate, a first screw rod and a first rotating driving piece, the first top plate is fixed above the first bottom plate through the first vertical rod, the first screw rod is connected with the first bottom plate and the first top plate in a rotating mode, the first screw rod is in threaded connection with the first screw hole, and the first rotating driving piece is connected with the first screw rod and used for driving the first screw rod to rotate.
Preferably, the first rotary driving member includes a first motor, a first driving gear and a first driven gear, the first motor is fixed to the first top plate, the first driving gear is coaxially fixed to an output shaft of the first motor, the first driven gear is coaxially fixed to the first lead screw, and the first driven gear is engaged with the first driving gear.
Preferably, the lighting mechanism further comprises a second position adjusting mechanism, and the second position adjusting mechanism is connected with the strip-shaped light source and is used for driving the strip-shaped light source to move.
Preferably, the second position adjusting mechanism comprises a second lifting plate and a second lifting adjusting piece, the second lifting plate is used for placing the strip-shaped light source, and the second lifting adjusting piece is connected with the second lifting plate and used for driving the second lifting plate to move up and down.
Preferably, the second lifting plate is provided with a second screw hole extending along the vertical direction; the second lifting adjusting piece comprises a second bottom plate, a second vertical rod, a second top plate, a second screw rod and a second rotating driving piece, the second top plate is fixed above the second bottom plate through the second vertical rod, the second screw rod is in rotating connection with the second bottom plate and the second top plate, the second screw rod is in threaded connection with the second screw hole, and the second rotating driving piece is connected with the second screw rod and used for driving the second screw rod to rotate.
Preferably, the second rotary driving element includes a second motor, a second driving gear and a second driven gear, the second motor is fixed to the second top plate, the second driving gear is coaxially fixed to an output shaft of the second motor, the second driven gear is coaxially fixed to the second lead screw, and the second driven gear is engaged with the second driving gear.
Preferably, the device for acquiring the surface defect images of the carbon fiber parts further comprises a conveying belt, wherein the conveying belt is arranged below the cover light source and is used for placing the carbon fiber parts, so that the carbon fiber parts reach the position below the cover light source.
Compared with the prior art, the technical scheme provided by the utility model has the beneficial effects that: the light source is used as a main polishing part, the existing point light source is replaced to polish, light supplement is carried out on the side through the bar-shaped light source, the light reflection phenomenon on the image of the carbon fiber part shot by the camera shooting part can be greatly reduced, and therefore a foundation is provided for subsequent scratch detection based on machine vision.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of an image capture device for surface defects of carbon fiber parts according to the present invention;
FIG. 2 is a schematic perspective view of the first position adjustment mechanism of FIG. 1;
FIG. 3 is a perspective view of the first position adjustment mechanism of FIG. 2 from another perspective;
FIG. 4 is a schematic perspective view of the second position adjustment mechanism of FIG. 1;
in the figure: 1-a lighting mechanism, 2-a camera, 3-a carbon fiber part, 4-a conveyer belt, 11-a cover light source, 12-a strip light source, 13-a first position adjusting mechanism, 131-a first lifting plate, 132-a first lifting adjusting member, 1321-a first bottom plate, 1322-a first upright rod, 1323-a first top plate, 1324-a first screw rod, 1325-a first rotating driving member, 13251-a first motor, 13252-a first driving gear, 13253-a first driven gear, 133-a slide rod, 14-a second position adjusting mechanism, 141-a second lifting plate, 142-a second lifting adjusting member, 1421-a second bottom plate, 1422-a second upright rod, 1423-a second top plate, 1424-a second screw rod, 1425-a second rotating driving member, 14251-a second motor, 14252-second driving gear, 14253-second driven gear.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate preferred embodiments of the utility model and together with the description, serve to explain the principles of the utility model and not to limit the scope of the utility model.
Referring to fig. 1, the utility model provides a carbon fiber part surface defect image acquisition device, which includes a polishing mechanism 1 and a camera 2, wherein the polishing mechanism 1 includes a cover light source 11 and a strip-shaped light source 12, the cover light source 11 is disposed above a carbon fiber part 3 and is used for polishing the carbon fiber part 3, the strip-shaped light source 12 is disposed on a side of the carbon fiber part 3 and is used for polishing the carbon fiber part 3, and the camera 2 is disposed in a center of the cover light source 11 and is used for acquiring an image of the carbon fiber part 3.
The carbon fiber part surface defect image acquisition device provided by the utility model uses the cover light source 11 as a main polishing part to replace the existing point light source polishing, and meanwhile, light is supplemented on the side through the strip-shaped light source 12, so that the reflection phenomenon on the image of the carbon fiber part shot by the camera 2 can be greatly reduced, and a foundation is provided for the subsequent scratch detection based on machine vision.
In order to adjust the position of the cover light source 11 to achieve the best lighting effect, referring to fig. 1-3, in a preferred embodiment, the lighting mechanism 1 further includes a first position adjusting mechanism 13, and the first position adjusting mechanism 13 is connected to the cover light source 11 and is configured to drive the cover light source 11 to move.
In order to specifically realize the function of the first position adjusting mechanism 13, referring to fig. 1-3, in a preferred embodiment, the first position adjusting mechanism 13 includes a first lifting plate 131, a first lifting adjusting member 132, and a sliding rod 133, the first lifting plate 131 is provided with a guide hole extending along a horizontal direction, the first lifting adjusting member 132 is connected to the first lifting plate 131 and is configured to drive the first lifting plate 131 to move up and down, the sliding rod 133 is slidably inserted into the guide hole, the sliding rod 133 is fixedly connected to the cover light source 11, when in use, the height of the cover light source 11 is adjusted by the first lifting adjusting member 132, and the front and rear positions of the cover light source 11 are adjusted by moving the sliding rod 133 back and forth, so that the position adjustment of the cover light source with two degrees of freedom can be performed.
In order to realize the function of the first lifting adjusting member 132, referring to fig. 1-3, in a preferred embodiment, the first lifting plate 131 is provided with a first screw hole extending along a vertical direction; the first lifting adjusting member 132 includes a first bottom plate 1321, a first vertical rod 1322, a first top plate 1323, a first lead screw 1324 and a first rotation driving member 1325, the first top plate 1323 is fixed above the first bottom plate 1321 through the first vertical rod 1322, the first lead screw 1324 is rotatably connected with the first bottom plate 1321 and the first top plate 1323, the first lead screw 1324 is connected in the first screw hole in a threaded manner, the first rotation driving member 1325 is connected with the first lead screw 1324 and is used for driving the first lead screw 1324 to rotate, and when the first lifting adjusting member is used, the first rotation driving member 1325 drives the first lead screw 1324 to rotate so as to drive the first lifting plate 131 to move up and down.
In order to realize the function of the first rotary driving element 1325, please refer to fig. 1-3, in a preferred embodiment, the first rotary driving element 1325 includes a first motor 13251, a first driving gear 13252 and a first driven gear 13253, the first motor 13251 is fixed on the first top plate 1323, the first driving gear 13252 is coaxially fixed on the output shaft of the first motor 13251, the first driven gear 13253 is coaxially fixed on the first lead screw 1324, and the first driven gear 13253 is engaged with the first driving gear 13252.
In order to adjust the position of the bar-shaped light source 12 for achieving the best lighting effect, referring to fig. 1 and 4, in a preferred embodiment, the lighting mechanism 1 further includes a second position adjusting mechanism 14, and the second position adjusting mechanism 14 is connected to the bar-shaped light source 12 and is used for driving the bar-shaped light source 12 to move.
In order to realize the function of the second position adjusting mechanism 14, referring to fig. 1 and 4, in a preferred embodiment, the second position adjusting mechanism 14 includes a second lifting plate 141 and a second lifting adjusting member 142, the second lifting plate 141 is used for placing the strip-shaped light source 12, and the second lifting adjusting member 142 is connected to the second lifting plate 141 and is used for driving the second lifting plate 141 to move up and down. When the cover light source device is used, the height of the strip-shaped light source 12 is adjusted through the second lifting adjusting piece 142, and meanwhile, the position (made of transparent materials) and the angle of the strip-shaped light source 12 can be moved back and forth on the second lifting plate 141, so that the cover light source 11 can be adjusted in position and angle with multiple degrees of freedom.
In order to realize the function of the second lifting adjusting member 142, referring to fig. 1 and 4, in a preferred embodiment, a second screw hole extending along the vertical direction is formed on the second lifting plate 141; the second lifting adjusting member 142 includes a second bottom plate 1421, a second vertical rod 1422, a second top plate 1423, a second screw 1424 and a second rotary driving member 1425, the second top plate 1423 is fixed above the second bottom plate 1421 via the second vertical rod 1422, the second screw 1424 is rotatably connected with the second bottom plate 1421 and the second top plate 1423, the second screw 1424 is connected in the second screw hole in a threaded manner, the second rotary driving member 1425 is connected with the second screw 1424 and is used for driving the second screw 1424 to rotate, and when in use, the second rotary driving member 1425 drives the second screw 1424 to rotate, so as to drive the second lifting plate 141 to move up and down.
In order to specifically realize the function of the second rotary driving member 1425, referring to fig. 1 and fig. 4, in a preferred embodiment, the second rotary driving member 1425 includes a second motor 14251, a second driving gear 14252 and a second driven gear 14253, the second motor 14251 is fixed on the second top plate 1423, the second driving gear 14252 is coaxially fixed on the output shaft of the second motor 14251, the second driven gear 14253 is coaxially fixed on the second lead screw 1424, and the second driven gear 14253 is engaged with the second driving gear 14252.
In order to improve the detection efficiency, please refer to fig. 1, in a preferred embodiment, the device for acquiring surface defects of carbon fiber parts further includes a conveyor belt 4, the conveyor belt 4 is disposed below the cover light source 11, and the conveyor belt 4 is used for placing the carbon fiber parts 3, so that the carbon fiber parts 3 reach below the cover light source 11.
For better understanding of the present invention, the following will describe the working process of the image capturing device for surface defects of carbon fiber parts provided by the present invention in detail with reference to fig. 1 to 4: make cover light source 11 reach the suitable position of conveyer belt 4 top through first position adjustment mechanism 13, make bar light source 12 reach the suitable position of conveyer belt 4 side through second position adjustment mechanism 14, the rethread conveyer belt 4 carries carbon fiber part 3 to cover light source 11 below in proper order, and through the image of the carbon fiber part 3 of 2 collections of making a video recording to provide the basis for subsequent mar based on machine vision.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.