Spindle motor tray adhesive dispensing method and supplementary apparatus
A spindle motor tray adhesive dispensing method and supplementary apparatus is disclosed. The apparatus includes a base block and a pressure block. The base block supports the tray to be processed, having a blind hole for receiving one end of the center axle of the tray and three adhesive troughs around the blind hole. The pressure block pressed on the tray above the base block and axially movable relative to the base block, having a guide hole for receiving the other end of the center axle of the tray. An open space is defined above the base block around the pressure block within which an adhesive dispenser is movable to dispense a polymer adhesive to the through holes on the tray and the adhesive troughs of the base block to form rubber pads at the tray when cured.
1. A spindle motor tray adhesive dispensing method, comprising the steps of:
(a) sandwiching a tray between a base block and a pressure block to keep an open space above said base block and around said pressure block, wherein said base block comprises at least one adhesive trough; said tray comprises a tray body having at least one through hole corresponding to said at least one adhesive trough, and an axle at the center of said tray body;
(b) moving an adhesive dispenser into the open space above said base block and around said pressure block and then operating said adhesive dispenser to dispense a polymer adhesive to said at least one through hole of said tray and said at least one adhesive trough of said base block; and
(c) removing said base block and said pressure block from said tray after curing of the dispensed polymer adhesive.
2. The spindle motor tray adhesive dispensing method as claimed in claim 1 , wherein the base block used in said step (a) comprises a blind hole for receiving one end of the axle of said tray, a spring member mounted in said blind hole, and a support pin supported on said spring member in said blind hole and stopped against the axle of said tray.