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Browse Prior Art Database

GRAVITY FEED OF BACK-UP BATTERIES

IP.com Disclosure Number: IPCOM000008833D
Original Publication Date: 1998-Sep-01
Included in the Prior Art Database: 2002-Jul-17
Document File: 2 page(s) / 110K

Publishing Venue

Motorola

Related People

Frank Lotz: AUTHOR [+2]

Abstract

The Gravity Feed of Back-up Batteries assembly (herein referred to as the Gravity Dispenser) was designed to replace an existing method of picking a battery from tape on reel stock and placing it into indi- vidual pager decoder board receptacles of an array.

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MOTOROLA Technical Developments

GRAVITY FEED OF BACK-UP BATTERIES

by Frank Lotz and Stuart Reid

INTRODUCTION

primary pulling force being created by gravity. A sec- ondary pushing force can be provided from a low vol- ume, low-pressure air supply as required.

  The Gravity Feed of Back-up Batteries assembly (herein referred to as the Gravity Dispenser) was designed to replace an existing method of picking a battery from tape on reel stock and placing it into indi- vidual pager decoder board receptacles of an array. PROBLEM(S) TO BE SOLVED

  The batteries come packaged in pockets equally spaced on a given length of plastic material that is then wound into the form of a reel. This requires that a sep- arate mechanism be used to index and unroll the reel to expose the batteries' edge. A robot with vacuum tipped end effector picks-up a battery, travels to one pager decoder board, then places it into a battery receptacle. It is important to note that robot travel time, between pick and place locations, is a significant portion of the process cycle time. Also, holding a battery by its edge and with vacuum force only, is an inherently unreliable method. Further, the plastic reel stock is discarded when empty because it is not considered refillable. SOLUTION TO THE PROBLEM(S)

   The Gravity Dispenser is a self contained mecha- nism which mounts to a robot's frame and "theta-axis" (refer to Figure 1). The robot's host controller and existing electrical/pneumatic interface box provide all of the I/O for the Gravity Dispenser. Ten vendor sup- plied plastic battery tubes (containing coin type batter- ies stacked flat within each) are loaded into a carousel thereby providing the battery supply above and within close proximity to the end effector. As a result robot travel distances are significantly reduced. It is impor- tant to note that the battery tubes are designed to be vendor refilled and not discarded. Battery moveme...