Browse Prior Art Database

On-Line Coating Vertification Sensing System

IP.com Disclosure Number: IPCOM000034982D
Original Publication Date: 1989-May-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Bleau, CD: AUTHOR [+5]

Abstract

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.

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On-Line Coating Vertification Sensing System

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. Receiving lens 4 focuses the

(Image Omitted)

reflected light from the pins heads onto linear photo array 5 which produces an electrical signal according to the intensity and location of light which falls on its surface. Referring to Figs. 1, 2 and 3, during operation the pins are transported through the system, the light source shines a beam of light across the I/O pin transport 3. The collection lens 2 is used to ensure that the beam will be focused on the area in which the pins will pass. If no pin is present then no light will fall on the linear photo array 5 but if a pin passes that has no resist on the pin's head the li...