METHOD FOR SORTING OBJECTS BY SHAPE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC B07C5/00 

FIELD: physics.

SUBSTANCE: main use of the invention is the sorting (grading) process of precious stones according to their shape, especially diamonds. The object sorting method according to their shape is piece feeding the objects to the lighting surveillance zone in the freefall phase, receiving the object images in the radiation illuminators from not less than eight electronic image forming devices, processing the received images for classifying the object shape to one of the predefined shape classes, forming the team for the executive sorting device that injects the object into the appropriate storage-hopper according to its shape. Lighting the object in the observation zone and forming the image of its shape are performed by sequential turning each pair of "illuminator - image forming device", from the first til the eighth, when finding the object in the path of free falling in the area of illumination -surveillance. Herewith each of the, at least, eight pairs "illuminator - image forming device" is located in different planes and uniformly on the sphere around the trajectory intersection point of the object free falling, and the optical axes of the pairs of "illuminator - image forming device.".

EFFECT: providing the high-performance of the method for sorting the objects by shape classes with simultaneous decreasing the proportion of the classification errors, expressed in the number of objects to be repeatedly or manually inspected.

3 cl, 1 dwg