公开(公告)号：US20150273753A1

公开(公告)日：2015-10-01

申请号：US14601528

申请日：2015-01-21

申请人： Barr, Inc

发明人： Robert A. Barr ,  Jeffrey A. Myers

IPC分类号： B29C47/60 ,  B29B7/42

CPC分类号： B29C48/59 ,  B29B7/42 ,  B29B7/429 ,  B29C48/52 ,  B29C48/64 ,  Y02P70/263

摘要： An extruder screw comprises a core extending longitudinally from a feed end to a discharge end thereof. The core has a helical primary thread formed thereon. At least one discontinuity is fog lied in the primary thread to divide the primary thread into a plurality of primary thread portions spaced apart from each other in a longitudinal direction of the core. The at least one discontinuity formed in the primary thread may be formed adjacent a downstream end of a compression section of the screw or spanning a transition from the compression section to a section of the screw disposed downstream of the compression section. The discontinuity in the primary thread militates against the problem of solids wedging by allowing any solid materials being processed by the extruder screw to expand and break apart prior to the core reaching a maximum outer diameter.

摘要翻译： 挤出机螺杆包括从进料端纵向延伸到其排出端的芯。 芯具有形成在其上的螺旋形主线。 在主螺纹中至少有一个不连续性是雾，以将主线分成在芯的纵向方向上彼此间隔开的多个主螺纹部分。 形成在主螺纹中的至少一个不连续部可以形成在螺杆的压缩部的下游端附近，或者形成从压缩部向设置在压缩部的下游的螺杆的过渡部。 主螺纹的不连续性通过允许由挤出机螺杆加工的任何固体材料在芯达到最大外径之前膨胀和分离，从而抵抗固体楔入的问题。