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    Molding arrangement to achieve short mold cycle time
    4.
    发明公开
    Molding arrangement to achieve short mold cycle time 失效
    Spritzgiessenanlage zumVerkürzender Formgebungstaktzeit

    公开(公告)号：EP0687551A2

    公开(公告)日：1995-12-20

    申请号：EP95303998.9

    申请日：1995-06-09

    申请人： JOHNSON & JOHNSON VISION PRODUCTS, INC.

    发明人： Lust, Victor ,  Martin, W. Anthony ,  Renkema, Kornelis ,  Van der Meulen, Wybren

    IPC分类号： B29D11/00 ,  B29C35/00

    CPC分类号： B29D11/0048 ,  B29C33/306 ,  B29C33/3842 ,  B29C33/56 ,  B29C45/37 ,  B29C45/73 ,  B29C2045/7343 ,  B29C2045/7362 ,  B29D11/00038 ,  B29D11/0023 ,  B29L2011/0016 ,  B29L2031/757 ,  Y10S425/808 ,  Y10S425/812

    摘要： An arrangement for molding a front or back polystyrene mold half which is used, with a second complementary back or front mold half, for subsequent molding of a soft contact lens such as a hydrogel soft contact lens. The arrangement is designed with heat flow considerations in mind to minimize the molding cycle time, while producing uniformly precise and accurate optical quality mold halves. Each mold half defines a convex curved surface and a concave curved surface spaced therefrom, with one of the surfaces defining an optical quality curved surface for the soft contact lens. A heated molding machine introduces molten polystyrene through a hot runner system to a plurality of mold cavities, each of which defines an optical quality curved surface and also a second noncritical surface. The optical quality surface of the mold cavity is positioned further away from the heated hot runner side of the mold than the second surface, which allows faster cooling of the optical quality surface of the mold cavity. This allows quicker setting and locking of minimal temperature residual stresses on the optical quality side of the mold half and a faster molding cycle time. Each mold cavity has a first insert on the optical quality side of the mold cavity and a second insert on the second side. Each of the first and second inserts has a circumferential cooling passageway defined therearound or in proximity for the first inserts, and also includes a bubbler positioned internally therein. Coolant is circulated in a turbulent mode through the circumferential passageways and also through the bubblers against inner surfaces of the insert to provide rapid cooling of the mold cavity.

    摘要翻译： 用于模制正面或背面聚苯乙烯半成品的装置，其具有第二互补的后部或前部半模，用于随后模制软性隐形眼镜，例如水凝胶软性隐形眼镜。 该设计考虑到热流考虑，以最小化成型周期时间，同时产生均匀精确和准确的光学质量半模。 每个模具半部限定凸起的弯曲表面和与其间隔开的凹形曲面，其中一个表面限定用于软性隐形眼镜的光学质量弯曲表面。 加热成型机将熔融聚苯乙烯通过热流道系统引入到多个模腔中，每个模腔限定光学质量曲面以及第二非临界表面。 模腔的光学质量表面定位成比第二表面更远离模具的加热的热流道侧，这允许更快地冷却模腔的光学质量表面。 这允许更快地设置和锁定半模的光学质量侧上的最小温度残余应力和更快的成型周期时间。 每个模腔在模腔的光学质量侧具有第一插入件，在第二侧具有第二插入件。 第一和第二插入件中的每一个具有围绕第一插入件限定在其周围或邻近的周向冷却通道，并且还包括位于其内部的起泡器。 冷却剂以湍流模式通过周向通道循环，并且还通过鼓泡器抵靠插入件的内表面，以提供模腔的快速冷却。

    CAVITY ASSEMBLY FOR A PREFORM MOLDING SYSTEM
    7.
    发明公开
    CAVITY ASSEMBLY FOR A PREFORM MOLDING SYSTEM 审中-公开
    模腔结构对于空白形成体系

    公开(公告)号：EP3033206A1

    公开(公告)日：2016-06-22

    申请号：EP14836742.8

    申请日：2014-08-15

    申请人： Mold-Masters (2007) Limited

    发明人： RODINSKY, Sheldon

    IPC分类号： B29B11/00

    CPC分类号： B29C45/7312 ,  B29B11/08 ,  B29C45/2711 ,  B29C49/06 ,  B29C2045/7362 ,  B29K2105/258 ,  B29L2023/00

    摘要： Disclosed is a preform molding system having a cavity assembly having an end forming portion and a body forming portion. A cooling chamber is defined between the cavity assembly and a surrounding structure. An outside surface of the end forming portion and an outside surface of the body forming portion are spaced apart from the surrounding structure, and, in operation, are engulfed in a flow of cooling fluid within the cooling chamber. Also disclosed is a preform mold stack having a cavity assembly that has end and body forming portions for molding a preform. An annular cooling chamber is defined at least in part by the cavity assembly, and is for cooling a preform molded in the cavity assembly. The annular cooling chamber extends in a longitudinal direction along the length of the end and body forming portions of the cavity assembly.

    INJECTION MOLDING COOLING CORE HAVING A RIBBED CAP
    8.
    发明授权
    INJECTION MOLDING COOLING CORE HAVING A RIBBED CAP 有权
    注射成型冷却核心有一个带帽的帽子

    公开(公告)号：EP1137525B1

    公开(公告)日：2003-12-03

    申请号：EP99959385.8

    申请日：1999-12-07

    申请人： Gellert, Jobst Ulrich

    发明人： Gellert, Jobst Ulrich

    IPC分类号： B29C45/73 ,  B29C33/04 ,  B29C45/72

    CPC分类号： B29C45/7312 ,  B29C2045/7362 ,  B29K2105/253

    摘要： Injection molding apparatus with each elongated cooled mold core (10) having a number of cooling fluid bores (118) or grooves (134) extending around a central cooling fluid duct (104). An integral dome shaped front cap (76) encloses the open front end (78). The inner surface (130) of the dome shaped cap (76) has curved ribs (132) which form curved cooling fluid grooves (134) aligned with the cooling fluid bores (118) or grooves (134). The curved ribs (132) give the dome shaped front cap (76) more strength which allows it to be thinner with the curved cooling fluid grooves (134) being closer to the cavity (66) to improve cooling efficiency.

    摘要翻译： 具有每个细长冷却模芯（10）的注射成型设备，其具有围绕中心冷却流体导管（104）延伸的多个冷却流体孔（118）或凹槽（134）。 整体圆顶形的前盖（76）封闭开口的前端（78）。 圆顶形帽（76）的内表面（130）具有弯曲肋（132），其形成与冷却流体孔（118）或凹槽（134）对齐的弯曲冷却流体槽（134）。 弯曲肋（132）为圆顶形前盖（76）提供更大的强度，使得弯曲的肋条更加薄并且弯曲的冷却流体槽（134）更靠近空腔（66）以提高冷却效率。

    INJECTION MOLDING COOLING CORE HAVING SPIRAL GROOVES
    9.
    发明授权
    INJECTION MOLDING COOLING CORE HAVING SPIRAL GROOVES 有权
    注射成型冷却芯有螺旋槽

    公开(公告)号：EP1137526B1

    公开(公告)日：2003-08-27

    申请号：EP99963416.5

    申请日：1999-12-07

    申请人： Gellert, Jobst Ulrich

    发明人： Gellert, Jobst Ulrich

    IPC分类号： B29C45/73

    CPC分类号： B29C45/7312 ,  B29C2033/042 ,  B29C2045/7362 ,  B29K2105/253

    摘要： Injection molding apparatus with each elongated cooled mold core (10) having a hollow elongated inner part (78) inside a hollow elongated outer part (80) and an integral dome shaped front cap (132). The outer surface (120) of the inner part (78) and the inner surface (126) of the outer part (80) each having cooling fluid conveying grooves (122, 128) which spiral in opposite direction. This provides very uniform cooling and forces the cooling fluid flow through the grooves (122, 128) to be very turbulent which increases cooling efficiency. It also gives the mold cores (10) additional structural strength to withstand higher injection pressures.

    摘要翻译： 具有每个细长冷却模芯（10）的注射成型装置具有在中空细长外部部分（80）内部的中空细长内部部分（78）和整体穹顶形前盖（132）。 内部件（78）的外表面（120）和外部件（80）的内表面（126）均具有沿相反方向螺旋的冷却流体输送槽（122,128）。 这提供非常均匀的冷却并且迫使冷却流体流过凹槽（122,128）非常湍流，这增加了冷却效率。 它还赋予模芯（10）额外的结构强度以承受更高的注射压力。