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Browse Prior Art Database

High Speed SMT Component Insertion Tool

IP.com Disclosure Number: IPCOM000122395D
Original Publication Date: 1991-Dec-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 5 page(s) / 184K

Publishing Venue

IBM

Related People

Price, RN: AUTHOR

Abstract

This SMT component insertion tool will load all the SMT components for a PC board including resistor, capacitor, and integrated circuit components in a single operation and will insert all the components on the board in a single operation. The total load and insert time for a 300 component board is approximately 5 seconds with an additional 5 seconds added if the the gluing operation is required (the design of the multiple glue head is not part of this invention, but this technology is available). With an additional board load time of 5 seconds the total time for each board would be 10-15 seconds, if the gluing operation is required. The design of this tool is very simple when compared to the present technology.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 40% of the total text.

High Speed SMT Component Insertion Tool

      This SMT component insertion tool will load all the SMT
components for a PC board including resistor, capacitor, and
integrated circuit components in a single operation and will insert
all the components on the board in a single operation.  The total
load and insert time for a 300 component board is approximately 5
seconds with an additional 5 seconds added if the the gluing
operation is required (the design of the multiple glue head is not
part of this invention, but this technology is available).  With an
additional board load time of 5 seconds the total time for each board
would be 10-15 seconds, if the gluing operation is required.  The
design of this tool is very simple when compared to the present
technology. Further, the cost of this tool will be much lower than
current tools while outperforming the current tools by a factor of
20-30 times.

      A model of the component loading fixture with one tube, and a
single pocket in the loading head, was built and functions smoothly
when loading a chip on the top of a stack of chips and releasing the
chip on a board.

      The main parts of the tool are the component-loading head,
multiple glue head, PC board mounting fixture with automatic loading,
component-loading fixtures and mechanisms to index the component-
loading head and the multiple glue head.  The component-loading head
indexes over either component-loading fixture, to load the SMT
components, and over the PC board fixture to insert the components on
the board.  Two component-loading fixtures are used to allow the
loading of tubes in one fixture, while operating from the other.  The
loading fixtures are easily removed and interchangeable to allow a
part number mix.  This feature also allows the use of only one
component-loading fixture location, if desired, since a new loaded
fixture could replace the current fixture when one is empty.  The
multiple glue head indexes over the PC board  fixture to apply a drop
of glue at each SMT component location (if required) and then indexes
back to its resting place.

      The component-loading head is a plate slightly larger than the
size of the PC board and is automatically indexed over either of the
component-loading fixtures.  This component-loading head loads the
components into the head or inserts the components on the board when
positioned thereabove.  The loading head is simple in design and has
no moving parts.  There is a component-loading head for each unique
PC board, but they can be easily manufactured using a programmable
laser etching machine.  The loading head has an alignment pocket with
beveled edges for each SMT component location on the board.

      The depth of each pocket is such that a small amount (same
amount for all chips) of each chip protrudes below the head bottom
surface.  The beveled edges at each pocket guide the chips as they
are loaded into the alignment portion of the pocket. ...