Browse Prior Art Database

Tape Feeder Characterization

IP.com Disclosure Number: IPCOM000102379D
Original Publication Date: 1990-Nov-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 79K

Publishing Venue

IBM

Related People

Greig, J: AUTHOR [+2]

Abstract

This article describes a mechanical modification to a component tape feeder which allows characterization set-up time to be reduced. A slipping clutch and index lever are redesigned. The disclosure relates to DYNAPERT. Surface Mounted Placement Machines and to Tape Feeder TF24C-14 MkII.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 53% of the total text.

Tape Feeder Characterization

       This article describes a mechanical modification to a
component tape feeder which allows characterization set-up time to be
reduced.  A slipping clutch and index lever are redesigned.  The
disclosure relates to DYNAPERT.  Surface Mounted Placement Machines
and to Tape Feeder TF24C-14 MkII.

      Tape feeder type TF24C-14 MkII is designed to feed large
components which are packed in blister tapes 24 mm wide.  Two
different index drive pulleys can be fitted to the TF24C-14 in order
that tapes of varying hole pitches can be handled, i.e., a 30-tooth
drive pulley advances the tape three holes at a time, and a 20-tooth
drive pulley advances the tape two holes at a time.  The TF24C-14
requires extensive adjustments prior to loading onto a DYNAPERT
surface placement feeder carriage.

      Each feeder prior to being used on the DYNAPERT placement
machines must be CHARACTERIZED.  This is a procedure where the
indexing of the component in relation to the datum pickup point of
the feeder must be set on a bench fixture.  It is a time-consuming
exercise and may take many attempts to establish the correct position
due to the inaccuracies in the tolerances of the feeder and machine
carriage locations resulting in bad pickup with the machine placement
head.  Additionally, when the placement head does not pick a part and
the operator gives the machine a signal for the feeder to index
another to the pickup datum, many parts may be pa...