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US 9,057,264 B2Granted
Screw shaft structure for double-shaft extruder
AssigneeThe Japan Steel Works, Ltd.
InventorsTakuya Hamada, Satoru Watada
Life of this patent
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Abstract
A screw shaft structure for a twin screw extruder includes a tapered section (20) provided between a ground section (6) and a screw piece inserting section (8), and a tapered ring (21) fitted onto the tapered section (20). The tapered ring (21) serves as a flange section. An object is to reduce the weight of raw material to be used for manufacturing a screw shaft by combining a tapered section and a tapered ring as a structure of a flange section.
Claims4
A screw shaft structure for a twin screw extruder, comprising at least:
- a connection section to be connected to a gear reducer;
- a ground section;
- and
- a screw piece inserting section,
- the screw shaft structure for a twin screw extruder further comprising:
- a tapered section provided between the ground section and the screw piece inserting section;
- and
- a tapered ring fitted onto the tapered section, the tapered ring serving as a flange section.
5 more elements
Dependencies are inferred from the claim text.