비보강 재료의 사출성형에 있어서 사출성형품의 리브 설계가 휨에 미치는 영향 Influence of Various Rib Design for Injection Molded Parts On Warpage during Injection Molding of Non Reinforced Resins
한국기계기술학회지
(韓國機械技術學會誌)
제17권 제4호
(2015.08)
pp.789-794
pp.789-794
한국기계기술학회
(Korean Society of Mechanical Technology)
초록
Molding trouble in injection-molded parts is caused by change of complexed molding product and molding process condition, etc. Warpage, which is one of the molding trouble, acts as possible factor which results in defect in assembly. In this study, a mold was designed to produce specimens with rib parallel to flow direction, specimens with rib perpendicular to flow direction and specimens without rib. This work researched change of warpage according to injection molding condition such as packing pressure, packing time, resin temperature in crystalline polymers(PP). Flat shape with ribs showed higher warpage than flat shape without ribs. The Specimens with ribs that are located perpendicular to the flow direction.
저자