METHOD AND DEVICE FOR MANUFACTURING SPIRAL SPACER

摘要

[PROBLEMS] To increase productivity. [MEANS FOR SOLVING PROBLEMS] This device for manufacturing a spiral spacer comprises a tension member wire disposed at its center and a spacer body part covered on the outer periphery of the tension member wire and having a plurality of spiral grooves formed in the outer periphery thereof. A twisting device (10) holding the tension member wire (A) and imparting twist thereto is installed immediately before a non-rotating die (12) for extruding a molten resin for molding for the spacer body part to the outer periphery of the tension member wire (A). The twisting device (10) comprises holding mechanism parts (100) for the tension member wire (A) and a twisting mechanism part (101) for the holding mechanism parts (100). The holding mechanism parts (100) are disposed oppositely to each other on both sides of the tension member wire (A), and comprise a plurality of rollers (100b) formed in pairs and supporting the tension member wire (A). The multiple sets of rollers (100b) are disposed along the extension direction of the tension member wire (A). High friction members (100j) are installed on the outer peripheral surfaces of the rollers (100b). ® KIPO & WIPO 2009