Browse Prior Art Database

Flash Shield

IP.com Disclosure Number: IPCOM000075594D
Original Publication Date: 1971-Oct-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Dennis, CL: AUTHOR [+2]

Abstract

During a plastic molding cycle, nozzle 5, as seen in Fig. 1, is advanced in the direction of arrow A to the position of Fig. 2 to engage mold 6. Thereafter heated molding resin is forced into mold 6. A flash shield assembly 7, retained about nozzle 5 by straps 9 and bolt 10, presents a shield 11, pivoted about the axis of hinges 12, with an opening 13 that fits closely about the end of the nozzle and through which the nozzle outlet communicates with the mold inlet.

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Flash Shield

During a plastic molding cycle, nozzle 5, as seen in Fig. 1, is advanced in the direction of arrow A to the position of Fig. 2 to engage mold 6. Thereafter heated molding resin is forced into mold 6. A flash shield assembly 7, retained about nozzle 5 by straps 9 and bolt 10, presents a shield 11, pivoted about the axis of hinges 12, with an opening 13 that fits closely about the end of the nozzle and through which the nozzle outlet communicates with the mold inlet.

During operation, when the molding resin is injected, the flash 14 occasioned by excess resin occurs between the shield 11 and mold 6. When nozzle 5 is retracted, the flash is stripped from the nozzle and remains with mold assembly 6 where it is ejected with the runner to eliminate the need to remove such flash material from the nozzle between successive cycles.

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