Browse Prior Art Database

Simplified No Connection Interface for Manufacturing Equipment

IP.com Disclosure Number: IPCOM000110432D
Original Publication Date: 1992-Nov-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 1 page(s) / 54K

Publishing Venue

IBM

Related People

McKnight, TJ: AUTHOR

Abstract

Changing technologies in manufacturing processes has made it more common to integrate different brands of manufacturing equipment. This mixture of brands causes communication problems when interfacing the equipment with conveyors. There are two industry standards for interfacing electronic card assembly tools to conveyors; Surface Mount Equipment Manufacture's Association (SMEMA) and Standard Machine Parallel Interface (SMPI). Both of these protocols require that the assembly tool and conveyor be wired together. This causes problems with protocol compatibility and line noise that may affect the equipment processors. Fig. 1 represents the standard way conveyors are interfaced to assembly tools.

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Simplified No Connection Interface for Manufacturing Equipment

      Changing technologies in manufacturing processes has made it
more common to integrate different brands of manufacturing equipment.
This mixture of brands causes communication problems when interfacing
the equipment with conveyors. There are two industry standards for
interfacing electronic card assembly tools to conveyors; Surface
Mount Equipment Manufacture's Association (SMEMA) and Standard
Machine Parallel Interface (SMPI).  Both of these protocols require
that the assembly tool and conveyor be wired together.  This causes
problems with protocol compatibility and line noise that may affect
the equipment processors.  Fig. 1 represents the standard way
conveyors are interfaced to assembly tools.

      Disclosed is an interfacing solution for communication between
different brands of assembly equipment and conveyors.  This is
accomplished by a Simplified No-Connection Interface (SNCI).  Photo
eyes from outputs of tools or conveyors are positioned at the input
of the next tool or conveyor in the process flow.  If a product is
present at the output of an assembly tool or conveyor and there is no
product present at the input of the next tool or conveyor, the
product will be transported.  Fig. 2 represents the SNCI interface
between conveyors and assembly tools.

      This concept is unique because it is being applied as the
architectural basis to automate an entire assembly line. Photo ey...