• 제목/요약/키워드: 노즐터치

검색결과 1건 처리시간 0.016초

리니어모터식 사출성형기의 반력문제 및 노즐터치기구 (Inertia Force Problem and Nozzle Contact Mechanism on Linear Motor Drive Injection Molding Machine)

  • 방영봉;윤등진
    • 한국정밀공학회지
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    • 제19권10호
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    • pp.171-177
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    • 2002
  • This paper presents the inertial force problem of ultrahigh-speed injection molding machine using linear motors, and presents its solutions. To make very thin products by injection molding, very high injection speed is required, and linear motors are used for this purpose. But direct drive by linear motors may cause brief nozzle separation from the sprue bushing because of the inertia force as large as the total output thrust of the linear motors, and this momentary separation can cause molten plastic leakage. In this paper, two solutions are proposed for this inertia force problem. One is the mechanical cancellation of the inertia force, and the other to increase the nozzle contact force. With the latter solution, the stationary platen bending worsens, so a new nozzle contact mechanism is also proposed, which can prevent the stationary platen bending.