Lead bend detector

Abstract

Abstract PURPOSE:To reduce an erroneous decision by converting a lead shape photographed by a CCD camera into a numeric value, expressing quantitatively the degree of its deformation, obtaining the information of the degree of lead bend and an easily bendable lead number and showing its tendency. CONSTITUTION:A DUT (an IC package to be measured) glides along an inclination from a loader part 1 being a supply part and carried successively by an operating arm through an inspection part 2, passes through a non-defective/ defective branching part 3 and stored in non-defective/defective storing parts 4, 5, respectively. Subsequently, in the inspection part 2, a lead shape of the DUT is photographed by a CCD camera 6, binarized by a CPU 8, expressed quantitatively as a point set in a coordinate system determined by a calibration and measured. Also, based on its data, a GO/NG decision of the DUT is executed, and the CPU 8 executes an image input and a data collection. Moreover, in each stage, by a frame memory 7, an image memory 9 and an external storage device 10, data is stored and accumulated, and also, displayed by a CPU control CRT 11 and a video monitor 12.

Inventors

• 👤 Tomoyuki Kida
• 👤 木田　智之

Bibliographic Details