Browse Prior Art Database

Shock Conveyor for Manufacturing Line Defect Containment

IP.com Disclosure Number: IPCOM000111790D
Original Publication Date: 1994-Mar-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 78K

Publishing Venue

IBM

Related People

Gallarelli, P: AUTHOR [+4]

Abstract

Illustrated in Figs. 1 and 2 is a device which provides an inexpensive means of stress screening a product in a high volume manufacturing environment, which replaces conventional shock/vibration screen test systems. The device consists of faceted rollers integrated into a manufacturing conveyor system in place of the standard cylindrical rollers. The product is subjected to a rapid series of low level shocks while passing over the turning faceted rollers, screening out defects such as bad solder joints and loose connectors, cables, cards, etc.

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Shock Conveyor for Manufacturing Line Defect Containment

      Illustrated in Figs. 1 and 2 is a device which provides an
inexpensive means of stress screening a product in a high volume
manufacturing environment, which replaces conventional
shock/vibration screen test systems.  The device consists of faceted
rollers integrated into a manufacturing conveyor system in place of
the standard cylindrical rollers.  The product is subjected to a
rapid series of low level shocks while passing over the turning
faceted rollers, screening out defects such as bad solder joints and
loose connectors, cables, cards, etc.

      The shock conveyor system can be incorporated into almost any
roller conveyor transport system.  It will eliminate process
bottlenecks, increased manufacturing time, additional manufacturing
personnel and expensive equipment otherwise associated with
conventional discrete shock/vibration stress screen test stations.

      In a typical application, the product rests on production
pallets which are driven atop the powered rollers of a manufacturing
conveyor.  When pallets pass over faceted rollers installed in the
conveyor, shock is transmitted through the pallet to the product.
Shock parameters are tuned on a per product basis to produce the
desired screen test level (considering product/component fragility
limits and screen test objectives).  Amplitude, duration and
repetition rate of shocks are controlled by adjusting roller diameter
and number of fa...