发明名称 MANUFACTURING APPARATUS FOR DIAPHRAGM SHEET FOR SPEAKER
摘要 PURPOSE:To increase the boundary accuracy between the cone and the edge, by using a ring-shape mask consisting of an elastic substance having through- holes radially, in laminating a paper-making sheet for cone on a paper-making sheet for edge. CONSTITUTION:A mask 8' of ring shape made of an elastic substance is provided at the external circumference of a circular rope 6', and its mesh is fixed with paint for parts 8'' other than the mask 8'. Through-holes 17 are provided on the mask 8' radially. When the circular rope 6' rotates, a part of a cone stock 5 in holes 7' of the ring mask 8' flows out via the through-holes 17 externally, the stock 5' attached to the edge of the mask 8' can be omitted. Thus, the circular rope 6' like this is used and a paper-making sheet for cone is laminated on a paer-making sheet for edge, allowing to increase the boundary accuracy between the cone and the edge.
申请公布号 JPS57135596(A) 申请公布日期 1982.08.21
申请号 JP19810022056 申请日期 1981.02.16
申请人 MATSUSHITA DENKI SANGYO KK 发明人 YAMAMOTO TOORU;NOGUCHI HIROTOSHI;YAMAMOTO KAZUMASA
分类号 D21J5/00;H04R7/02;H04R7/12;H04R7/18;H04R31/00 主分类号 D21J5/00
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