JPH0175068U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の帯状体用コアの一実施例の斜
視図、第２図は同上正面図、第３図は第２図中Ａ
―Ａ線拡大断面図、第４図は他の実施例の正面図
、第５図は第４図中Ｂ―Ｂ線拡大断面図、第６図
は従来の帯状体用コアの正面図、第７図は第６図
中Ｂ―Ｂ′線拡大断面図である。 １……外円筒、２……内円筒、３……円環板、
４……リブ、５……凸部。 Fig. 1 is a perspective view of one embodiment of the core for a belt-shaped body of the present invention, Fig. 2 is a front view of the same, and Fig. 3 is A in Fig. 2.
- An enlarged sectional view taken along the line A, FIG. 4 is a front view of another embodiment, FIG. 5 is an enlarged sectional view taken along the line B-B in FIG. 4, and FIG. FIG. 7 is an enlarged sectional view taken along the line B-B' in FIG. 1... Outer cylinder, 2... Inner cylinder, 3... Annular plate,
4...Rib, 5...Protrusion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 外円筒と内円筒の軸芯を一致させて、両円筒の
各々略中央部間に、前記軸芯と直角方向に位置す
る一枚の円環板の両面に複数のリブを略左右対称
に、かつ前記軸芯から放射方向に両円筒を連接し
て配設してなる、熱可塑性樹脂を射出成型して形
成した帯状体用コアにおいて、射出成形における
金型のコアと接触する部位の少なくとも一部に凸
部を形成したことを特徴とする帯状体用コア。 The axes of the outer cylinder and the inner cylinder are made to coincide, and a plurality of ribs are placed approximately symmetrically on both sides of a single annular plate located in a direction perpendicular to the axis, between the approximately central portions of both cylinders, and in a core for a belt-shaped body formed by injection molding a thermoplastic resin, which is formed by connecting both cylinders in a radial direction from the axis, at least one of the parts that contacts the core of a mold in injection molding. A core for a belt-shaped body, characterized in that a convex portion is formed in the core.