COMPONENT HOLDING STATE DETECTION METHOD AND COMPONENT MOUNTING MACHINE

摘要

A component mounting machine includes a part camera in which a suction nozzle for sucking a component P and a fiducial mark are provided on a head, a sub-lens is installed in a visual field of a lens, the component is imaged through a main lens, and it is possible to image the fiducial mark through the lens and the sub-lens. Distortion correction values of the main lens portion are measured, distortion correction values of the sub-lens portion are measured, and the distortion correction values are stored in advance as a distortion correction table. During component mounting, when the component P which is sucked by the suction nozzle and the fiducial mark are imaged at the same time by the part camera, the obtained image is corrected using the distortion correction table, and a suction state of the component P is detected based on the corrected image.

主权项

1. A component holding state detection method in which an imaging means is configured to have a first imaging region in which an object forms an image on an image sensor through a first lens and a second imaging region in which an object forms an image on the image sensor through the first lens and a second lens, a component is held using a holding member attached to a head, the component held by the holding member is imaged in the first imaging region and a fiducial mark which is provided on the head is imaged in the second imaging region such that the component and the fiducial marks are imaged at the same time, and a holding state of the component held by the holding member is detected based on an image which is obtained by the imaging, the method comprising:
before determining the holding state, imaging a distortion measurement object in the first imaging region, measuring and storing a distortion value of the first imaging region based on an image which is obtained by the imaging, imaging a distortion measurement object in the second imaging region, and measuring and storing a distortion value of the second imaging region based on an image which is obtained by the imaging; when the component is held by the holding member, imaging the component and the fiducial mark by the imaging means, correcting an image obtained by the imaging of the component in the first imaging region, based on the stored distortion value of the first imaging region, and correcting an image obtained by the imaging of the fiducial mark in the second imaging region, based on the stored distortion value of the second imaging region; and detecting the holding state of the component held by the holding member based on the corrected image.