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公开(公告)号：US5427514A
公开(公告)日：1995-06-27
申请号：US201155
申请日：1994-02-24
CPC分类号： B29C45/0013 , B29C45/2701
摘要： A magnetic plastic rotor disk manufacturing apparatus, includes an injection device for injecting a magnetic plastic material containing a synthetic resin matrix and a magnetic powder; a mold for molding the magnetic plastic material injected thereinto from the injection device, and a device for generating a magnetic field and magnetizing the magnetic powder in a direction along a diameter of the magnetic plastic rotor disks. The mold includes a three-plate type mold constructed of two retainer plates and a single runner stripper plate. One of the retainer plates is formed with a plurality of pin gates corresponding to the cavities so as to supply the magnetic plastic material through the pin gates into the cavities.
摘要翻译： 一种磁性塑料转子盘制造装置，包括：注入含有合成树脂基体和磁性粉末的磁性塑料的注射装置; 用于模制从注射装置注入的磁性塑料材料的模具，以及用于产生磁场并沿着磁性塑料转子盘的直径的方向磁化磁粉的装置。 模具包括由两个保持板和单个脱模板构成的三板式模具。 保持板中的一个形成有与空腔对应的多个销浇口，以便通过销浇口将磁性塑料材料供应到空腔中。
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公开(公告)号：US4904175A
公开(公告)日：1990-02-27
申请号：US342786
申请日：1989-04-25
CPC分类号： H01F41/028 , B29C45/0013
摘要： A magnetic plastic rotor disk manufacturing apparatus according to the present invention is capable of manufacturing a plurality of magnetic plastic rotor disks having equal desired surface magnetic flux density distribution characteristics in a single molding cycle.The apparatus comprises a metal mold composed of a pair of half molds and having a plurality of cavities for receiving magnetic plastic material therein, etiher one or a plurality of magnetic field creating coils for creating one or a plurality of magnetic fields to magnetize and orient the magnetic particles in the above magnetic plastic material injected into the cavities, and also a plurality of yokes, one of which by any means extends from the central portion thereof along the splitting surface of the metal mold toward the above cavities formed on a circle concentrically formed therein so as to guide the magnetic fluxes of the magnetic fields created by the above coils to flow radially from the central portion of the same toward the periphery thereof. Thus, the magnetic plastic rotor disks formed in the cavities are exposed uniformly and diametrically to the magnetic flux, enabling them having a satisfactorily large surface magnetic flux density.
摘要翻译： 根据本发明的磁性塑料转子盘制造装置能够在单个成型周期中制造具有相同的期望的表面磁通密度分布特性的多个磁性塑料转子盘。 该装置包括由一对半模组成的金属模具，并具有用于在其中接收磁性塑料材料的多个空腔，用于形成一个或多个磁场产生线圈，用于产生一个或多个磁场以磁化和定向 注射到空腔中的上述磁性塑料材料中的磁性颗粒以及多个轭，其中一个轭通过任何方式从其中心部分沿着金属模的分离表面延伸到形成在同心圆形的圆上的上述腔 以引导由上述线圈产生的磁场的磁通量从其中心部分向其周边径向流动。 因此，形成在空腔中的磁性塑料转子盘与磁通量均匀且径向地露出，使得它们具有令人满意的大的表面磁通密度。
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