公开(公告)号：US20130300022A1

公开(公告)日：2013-11-14

申请号：US13939597

申请日：2013-07-11

Applicant: Hitachi Magnet Wire Corp.

Inventor： Masayoshi Goto

IPC: H01B13/24

CPC classification number: H01B7/08 ,  B05C1/04 ,  B05C3/12 ,  B05C3/125 ,  B05D7/20 ,  C03C25/12 ,  C03C25/18 ,  H01B13/065 ,  H01B13/16 ,  H01B13/24

Abstract: A manufacturing method uses a solid coating die for applying an insulation varnish around a flat wire conductor. The die includes a die body and a die hole formed through the die body, into which the conductor is inserted. The die hole includes an entry portion having a cross section monotonically decreasing along a conductor insertion direction, and a coating portion including at least a sub-portion having a constant cross section. The cross section of the coating portion is a rectangle having four straight sides and four rounded corners. Each inner surface of each straight side has an inwardly projecting protrusion, a top contour of each protrusion being a circular arc, an elongated circular arc, an elliptical arc or a combination of these arcs, the maximum curvature of the top contour of each protrusion being larger than the maximum curvature of inner surface of the rounded corners.

Abstract translation: 一种制造方法使用用于在扁平导线周围施加绝缘漆的固体涂层模头。 模具包括模具主体和穿过模具主体形成的模具孔，导体插入模具主体中。 模具孔包括沿着导体插入方向具有横截面单调递减的入口部分和至少包括具有恒定横截面的子部分的涂覆部分。 涂布部分的横截面是具有四个直边和四个圆角的矩形。 每个直边的每个内表面具有向内突出的突起，每个突起的顶部轮廓是圆弧，细长圆弧，椭圆弧或这些弧的组合，每个突起的顶部轮廓的最大曲率为 大于圆角内表面的最大曲率。