Mold for injection molding

B - Operations – Transporting – 29 – F

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18/708

B29F 1/022 (1980.01)

Patent

CA 1150922

T I T L E " MOLD FOR INJECTION MOLDING" ABSTRACT OF THE DISCLOSURE A mold for injection molding of plastic articles which are automatically numbered or coded without repeating the com- binations. In accordance with the invention one half of the mold comprises concentric ring rotatable about a reference axis perpendicular to the mold surface, the rings forming portions of the mold cavity in equally spaced positions about said reference axis, each ring presenting in the interior of each cavity a marking that is different from those that it presents to the other cavities, means for rotating one of said rings by increments so that its markings are presented, one by one, to said cavities, and for rotating each other ring by an increment each time the previous ring completes a revolution, in a manner similar to a mechanical counter, and actuating means to actuate said rotating means by an increment for each cycle of separation and approximation of said mold halves.

343228

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