Workpiece hidden pattern detecting device
A detection device and workpiece position technology, applied in the field of visual inspection, can solve the problems of large equipment volume, cumbersome technical steps for invisible pattern detection on workpieces, low detection efficiency, etc., and achieve uniform light distribution, simple and compact detection equipment, and improved detection speed. Effect
Active Publication Date: 2015-06-03
江苏科思机电工程有限公司
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Problems solved by technology
[0003] The problem to be solved by the present invention is: the existing technical steps for detecting invisible patterns on the workpiece are cumbersome, the equipment is bulky, and the detection efficiency is low
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[0022] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0023] The present invention includes an illumination device 1, a workpiece position sensor 2, a detection camera 3 and a controller 4, and the illumination device 1, the workpiece position sensor 2 and the detection camera 3 are respectively connected to the controller 4, such as figure 1 As shown, the lighting device 1 is divided into a first-area light source 11 and a second-area light source 12, the workpiece 5 sequentially passes through the irradiation ranges of the first-area light source 11 and the second-area light source 12, and the workpiece position sensor 2 is set corresponding to the first-area light source 11 for detecting the workpiece 5 whether it has passed through the irradiation range of a light source 11; figure 2 As shown, the second zone light source 12 is divided into different parts according to...
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A workpiece hidden pattern detecting device comprises a lighting device, a detecting camera, a workpiece position sensor and a controller. The lighting device, the detecting camera and the workpiece position sensor are connected with the controller. The lighting device comprises a first-area light source and a second-area light source. Workpieces sequentially pass irradiation ranges of the first-area light source and the second-area light source. The workpiece position sensor corresponds to the first-area light source. The second-area light source is divided into different parts according to annular angles, and light sources circuits of different parts are serially connected. The detecting camera is used for acquiring images of the workpieces passing the first-area light source and the second-area light source. The workpiece hidden pattern detecting device has the advantages that image is acquired by double exposure with one camera to complete workpiece hidden pattern detection, full-automatic detection is achieved, complex detecting procedures are avoided, detecting efficiency is high, and the detecting device is simple and compact in structure.
Description
technical field [0001] The invention belongs to the technical field of visual inspection and is used for detecting invisible patterns on workpieces including various coins, circulation coins and commemorative coins, and is a workpiece invisible pattern detection device. Background technique [0002] Invisible pattern is an anti-counterfeiting technology, which is often used to identify various types of workpieces such as coins, circulation coins, and commemorative coins. At present, image visual inspection technology has been widely used. Existing detection equipment can image workpieces through multiple cameras. However, such a detection method has cumbersome steps and low detection efficiency. Since it is necessary to first determine the developing direction of the invisible pattern during detection, and then select the corresponding lighting orientation (angle) to detect the invisible pattern, this needs to be divided into two For the above inspection stations, the inspec...
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IPC IPC(8): G07D5/00
Inventor 许群波周基祥
Owner 江苏科思机电工程有限公司