Browse Prior Art Database

Automated Assembly and Disassembly Station for Line Embedding Process

IP.com Disclosure Number: IPCOM000110165D
Original Publication Date: 1992-Sep-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 4 page(s) / 220K

Publishing Venue

IBM

Related People

Jordan, SR: AUTHOR [+2]

Abstract

This article describes an automated system to assemble and disassemble uncured glass ceramic substrates in a line embedding process.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Automated Assembly and Disassembly Station for Line Embedding Process

       This article describes an automated system to assemble
and disassemble uncured glass ceramic substrates in a line embedding
process.

      A process which is performed on green sheets that are used to
make multilayer ceramic (MLC) substrates is called line embedding
because the circuit lines that are on the green sheet are pressed or
embedded into the green sheet material.  This embedding process
improves the yields of the MLC substrates.

      The embedding process requires that the green sheet be
assembled into a "sandwich" between two steel plates and two mylar
backer sheets, as shown in Fig. 1.  Previously, this sandwich has
been manually assembled.  This invention describes the automated
assembly and disassembly stations to automatically assemble and
disassemble these line-embed sandwiches.

      Figs. 2a. and 2b are top and side views, respectively, showing
the automatic assembly station.  The automated assembly station has
seven positions and four stations.  The four stations work
asynchronously and in parallel to assemble a sandwich.  The assembly
operation begins when a walking beam-type indexing mechanism 2 slides
the bottom plate 1 off the conveyor to the first position of the
automatic assembly station.  Then a pneumatic pick and place
mechanism 3 picks a single mylar backer sheet, using vacuum, from a
stack; then raises and rotates 90 degrees and places the sheet on the
bottom plate at this first position.  The part is then indexed to the
second position by the walking beam.  At this position a second pick
and place mechanism 4, which is the same as 3, picks up a single
green sheet from an Input Cleaner Transport (not shown) and places it
on top of the backer sheet/bottom plate.  The green sheet/backer
sheet/bottom plate are indexed two times to arrive at the fourth
position of the automated assembly station.  At this position, a
third pick and place mechanism 5 picks a single mylar backer sheet
from a second stack and places it on top of the green sheet/backer
sheet/ottom plate.  This "open-faced sandwich" is indexed three times
to arrive at the seventh and final position of the automated assembly
station.  At this position, a flip-over mechanism 6 picks up an
upside-down top plate 7 from the conveyor, flips it over 180 degrees,
so that it is right side up, and places it to complete the sandwich.
The next index of the assembly station causes the sandwich to be slid
onto a conveyor system where it is transferred and processed for line
embedding.

      Figs. 3a...