Browse Prior Art Database

Epoxy Apply and Cure Workstation

IP.com Disclosure Number: IPCOM000121336D
Original Publication Date: 1991-Aug-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 7 page(s) / 238K

Publishing Venue

IBM

Related People

Barenboim, M: AUTHOR [+4]

Abstract

This article describes an epoxy apply and cure workstation which is part of a suspension assembly manufacturing line. This workstation applies a drop of premixed epoxy adhesive onto a magnetic read/write head, and after securing (manually) a load beam over the head, the epoxy is cured so that the head and the load beam form head suspension assembly (HSA).

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 38% of the total text.

Epoxy Apply and Cure Workstation

      This article describes an epoxy apply and cure
workstation which is part of a suspension assembly manufacturing
line. This workstation applies a drop of premixed epoxy adhesive onto
a magnetic read/write head, and after securing (manually) a load beam
over the head, the epoxy is cured so that the head and the load beam
form head suspension assembly (HSA).

      In the drawings Fig. 1 shows the HSA, the product to be
manufactured on the assembly line.

      Fig. 2 shows a tooling fixture used in the HSA assembly
process.

      Fig. 3 shows the same tooling fixture as seen in Fig. 2, with
the load beam assembly clamped over the magnetic head.

      Figs. 4a and 4b are top and front views, respectively, showing
the entire workstation, including power and control cabinets.

      Figs. 5a and 5b are top and side views, respectively, showing
the epoxy apply subassembly.

      Figs. 6a and 6b are top and front views, respectively, showing
the epoxy cure subassembly.

      Referring to Fig. 1, the suspension assembly consists of a
number of parts, including magnetic head 1 attached to flexure 2 by
means of an epoxy adhesive applied and cured as described herein.
Flexure 2 is welded to load beam 3, and wiring harness 4 is attached
to magnetic head 1 and routed through the U-shaped load beam
structure.

      Referring to Fig. 2, a tooling fixture 5 contains magnetic head
1 and wiring harness 4 which were inserted and secured at previous
stations of the assembly line.  At that point, four wires of the
harness have been attached to the magnetic head 1.

      After a premixed epoxy adhesive drop has been deposited on top
of the magnetic head 1, load beam 3 with its flexure 2 can be loaded,
properly oriented and secured over the magnetic head 1 by means of a
tooling fixture 5 as described in [*].  Referring to Fig. 3, the
tooling fixture 5 is shown loaded with all the components of the HSA.

      Referring to Figs. 4a, 4b, 5a, 5b, 6a and 6b, when an operator
loads tooling fixture 5 onto the workstation's epoxy apply
subassembly, it is ready for an automatic epoxy apply cycle.  After
epoxy has been applied, an operator may check the proper epoxy
deposition either by looking at a TV monitor (comparing size of the
deposited dot to a master dot outlined on the screen), or through
microscope eyepieces.  If the deposited epoxy dot is within the
specifications, an operator loads the load beam 3 over the magnetic
head 1 and secures it within tooling fixture 5 (as seen in Fig. 3).
Tooling fixture 5 is then loaded on epoxy cure subassembly for an
automatic curing cycle.

      The epoxy apply and cure workstation (Figs. 4a, 4b, 5a, 5b, 6a
and 6b) is a semi-automatic, operator-driven station. It consists of
two major subassemblies, the epoxy apply and the epoxy cure, with all
associated equipment necessary to drive and control the station.  All
subassemblies and mec...