On-Line Coating Vertification Sensing System
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-28
This article describes a verification system which inspects the flat heads of input/output (I/O) pins for the presence of a coating material as the pins move uninterrupted on a conveyor line. The system disclosed herein applies, cures and inspects a plating resist to the heads of taper headed I/O pins of the type shown in Fig. 1. In order to produce large volumes, an on-line inspection station is required that can provide a "go/no go" test for the system's controller, accurately and quickly. Fig. 2 illustrates the configuration and major components of the system. The basic configuration includes a light source 1 which emits a small beam of light of constant intensity. A collection lens 2 focuses the light onto the I/O pin head. An I/O pin transport 3, holds and moves the pins throughout the system.