Method of making a molded part utilizing a liquid injection molding apparatus

Claim 1

In a method of making a molded part from a liquid injection molding composition utilizing a liquid injection molding apparatus, comprising: (a) feeding molding composition into a conduit slidably mounted on the forward end of a frame and on the forward end of a mold frame means; (b) causing a first plate means having passage means therein for the passage of molding composition and a nozzle means located at the end of said passage means in said first plate means to come into contact with a mold cavity means; (c) retracting a closing pin means slidably mounted in said mold frame means so as to open a nozzle opening means in said nozzle means; (d) allowing molding composition to pass into said mold cavity means; (e) causing said closing pin means to close said nozzle means after the required amount of molding composition has passed into said mold cavity means; (f) causing said first plate means to retract from said mold cavity means; (g) curing said molding composition in said mold cavity means; (h) the improvement which comprises utilizing a shuttle plate means adjacent to said nozzle means to automatically take a finished molded part from said mold cavity means and pass it out of the mold apparatus by knocking out said molded part with a knock-out plate means located on both sides of said nozzle means, in the same plane as said nozzle means, and substantially external to support post means, and wherein said knock-out plate means comprises first and second knock-out plates containing knock-out pins which fit in the mold cavities of said shuttle plate means while said shuttle plate means is moving so as to knock-out the molded parts in the mold cavities in said moving shuttle plate means.