专利名称：REACTIVE INJECTION MOLD FOR V-RIBBED BELT
发明人：HASEGAWA MAKOTO,FUJIOKA
SEIKO,HATTA TAISUKE
申请号：JP1583390
申请日：19900125
公开号：JPH03219931A
公开日：
reactive materials studies
19910927
专利内容由知识产权出版社提供
摘要：PURPOSE:To obtain a V-ribbed belt which has neither a weld defect nor concentration of bubbles, by a method wherein a flowing distance of a molding material is made short by corresponding to a space between gates each by providing a plurality of gates in a circumferential direction of an annular cavity at intervals. CONSTITUTION:A molding material streamed into a runner 21 through a sprue 19 is split into two bands of a clockwise direction and counterclockwise direction of a peripheral direction by colliding with a protrusion 23 positioning directly below the sprue 19. The molding material is streamed away into a cavity 15 through gates 22 each by repeating such actuation as to split the same into one flowing in the peripheral direction as it is and one flowing into the cavity 15 every time the same meets respectively with the gates 22. Therefore, it becomes that the molding materials streamed in through the gates 22, 22 adjoining to each other collide with each other. However, since a space between the gates is narrow, collision is generated immediately after an inflow of the molding material into the cavity 15, the molding material is filled out into the cavity 15 under a state where the molding materials streamed into the cavity through the gates 22 each collide speedily with each
other prior to curing and meet each other, and a V-ribbed belt free from a weld defect is obtained.
申请人：BANDO CHEM IND LTD
更多信息请下载全文后查看

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。