公开(公告)号：US20100166904A1

公开(公告)日：2010-07-01

申请号：US12653285

申请日：2009-12-11

申请人： Harris E. Holton ,  McGhee K. Burr

发明人： Harris E. Holton ,  McGhee K. Burr

IPC分类号： B29C47/54 ,  B29C47/92

CPC分类号： B29C47/92 ,  B29C47/0023 ,  B29C47/0033 ,  B29C47/364 ,  B29C47/367 ,  B29C47/38 ,  B29C47/54 ,  B29C2947/9259 ,  B29C2947/926 ,  B29C2947/92704 ,  B29C2947/92809 ,  B29C2947/92857 ,  B29C2947/92885 ,  B29C2947/92961

摘要： An extrusion system and method uses an accumulator to control and use excess plastic melt. The accumulator is situated between an extruder and a gear pump. The accumulator includes an accumulator housing to store excess plastic melt from the extruder and an accumulator spring connected to an accumulator piston to subsequently send the excess plastic melt to the gear pump. In another embodiment, the accumulator includes an accumulator housing to store excess plastic melt from the extruder and a hydraulics system to send the excess plastic melt to the gear pump. The accumulator can be a first in first out (FIFO) device having a melt passage through the accumulator piston. The system and method are used particularly advantageously in Alternate Polymer extrusion installation in which gear pumps regularly increase and decrease their speed but in which the melt-supplying extruder cannot accommodate such rapid speed changes.

摘要翻译： 挤压系统和方法使用蓄能器来控制和使用多余的塑料熔体。 蓄能器位于挤出机和齿轮泵之间。 蓄能器包括储存器壳体，用于储存来自挤出机的多余的塑料熔体和与蓄能器活塞连接的蓄能器弹簧，随后将多余的塑料熔体送至齿轮泵。 在另一个实施例中，蓄能器包括蓄能器壳体，用于存储来自挤压机的多余的塑料熔体和液压系统，以将多余的塑料熔体发送到齿轮泵。 蓄能器可以是具有通过蓄能器活塞的熔体通道的先进先出（FIFO）装置。 该系统和方法特别有利地用于交替聚合物挤出设备，其中齿轮泵定期增加和降低其速度，但熔融供给挤出机不能适应这种快速变化。