Browse Prior Art Database

Module Separator

IP.com Disclosure Number: IPCOM000048858D
Original Publication Date: 1982-Apr-01
Included in the Prior Art Database: 2005-Feb-09
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Chow, WW: AUTHOR [+4]

Abstract

Selective debonding of a head module at the module/ housing interface can be performed by the tool shown. The housing and module are heated and an edge of a plate is directed at the bond for producing a cleavage load on the adhesive. The plate edge includes a soft elastomeric coating to minimize stress concentration on the module.

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Module Separator

Selective debonding of a head module at the module/ housing interface can be performed by the tool shown. The housing and module are heated and an edge of a plate is directed at the bond for producing a cleavage load on the adhesive. The plate edge includes a soft elastomeric coating to minimize stress concentration on the module.

As shown in the figure, a head 1 is placed in the fixture 2 with a pusher plate 3 positioned to apply a cleavage load at the adhesive bond 4 between the housing 5 and the read/ write module 6. The pusher plate 3 includes a soft elastomeric coating 7. The edge of the pusher plate 3 is grooved and includes the coating 7 to minimize the stress concentration on the module 6. The pusher plate 3 directs an applied load to the edge of the module 6 at an angle A of approximately 45 to the bond surface 4. A heating element 8 is located in the fixture 2 to direct a heat flow from the housing 5 to the module 6 through the adhesive bond joint 4 that is to be separated. A thermocouple 9 monitors the temperature applied by the heating element 8. The thermocouple is inserted into the housing 5 close to the adhesive bond joint 4.

To perform the separation, the heater 8 is turned on and the temperature is monitored through the thermocouple 9. When the temperature reaches to about 10 degrees C less than the softening temperature of the bond, a gradually increasing load is applied to the pusher plate 3. The load is increased gradually unt...