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    • 28. 发明公开
    • Vacuum extrusion system and method
    • 真空挤出系统和方法
    • EP1354690A2
    • 2003-10-22
    • EP03076851.9
    • 1997-08-11
    • OWENS CORNING
    • Lightle, Rodger D.Sadinski, Robert L.Lincoln, Robert M.
    • B29C47/90B29C44/50B29C44/60B29C47/16B29C47/88B29C47/92
    • B29C44/3407B01J3/006B01J3/03B29C44/3403B29C47/0009B29C47/34B29C47/884B29C47/8895B29C47/90B29C47/905B29C47/92B29C2947/92104B29C2947/92428B29C2947/92476B29C2947/926B29C2947/92923B29C2947/92971
    • A horizontal vacuum extrusion line includes a fixed bulkhead (23), a die (24) inside the bulkhead, a telescoping vacuum chamber section (27) and fixed chamber sections (28,29). A dam (33) in the fixed section forms a pond (72) for immersion cooling of the extrudate. A truss (35) extends from the dam to the bulkhead supporting shaping and calibration equipment and extends through the telescoping section. Fluid pressurizable seals at each end of the telescoping section are operable after the telescoping section is closed against the bulkhead and the telescoping and fixed sections are locked together. The telescoping section provide a more compact line and easier access to the complex equipment downstream of the die. The extrudate from the die passes down into the pond (72) and then through an orifice (74) in a hood (75) projecting from the chamber into a lower level portion of the pond (78) exposed to atmosphere. The hood also includes a tractor drive (88) to push the extrudate through the underwater orifice. The hood and its contents are accessible through the atmospheric pond. A tractor haul-off and the tractor drive in the hood are the only extrudate drives between the calibration equipment and atmosphere. The higher level of the pond (72) within the chamber downstream of the dam is controlled by a valve in turn controlling the output of a pump. The valve control senses the pond level and operates independently of the vacuum controls.
    • 卧式真空挤出生产线包括固定舱壁(23),舱壁内的模具(24),伸缩真空室部分(27)和固定室部分(28,29)。 固定部分中的坝(33)形成用于浸渍冷却挤出物的池(72)。 桁架(35)从大坝延伸到支撑成形和校准设备的舱壁,并延伸穿过伸缩部分。 在伸缩部分靠着舱壁关闭并且伸缩部分和固定部分锁定在一起之后,伸缩部分的每个端部处的流体可加压密封件都可操作。 伸缩部分提供更紧凑的生产线,更容易进入模具下游的复杂设备。 来自模具的挤出物向下传递到池塘(72)中,然后通过从室中伸出的罩(75)中的孔口(74)进入暴露于大气的池(78)的较低高度部分。 罩子还包括拖拉机驱动器(88)以推动挤出物通过水下孔口。 引擎盖及其内容物可通过大气池进入。 拖拉机牵引装置和发动机罩内的拖拉机驱动装置是校准设备和大气之间唯一的挤出驱动装置。 大坝下游的池塘(72)的较高高度由阀门控制,从而控制泵的输出。 阀门控制感应池塘水平并独立于真空控制器运行。