JPH0362820U

JPH0362820U -

Info

Publication number: JPH0362820U
Application number: JP12346789U
Authority: JP
Priority date: 1989-10-20
Filing date: 1989-10-20
Publication date: 1991-06-19

Description

[Brief explanation of the drawing]

第１図はこの考案の実施例の横断面図、第２図
は上記実施例の縦断面図である。１……ドラム、１Ａ……第１セグメント、１Ｂ
……第２セグメント、１ｍ，１ｎ……セグメント
の端面、６……半径方向に摺動する摺動ブロツク
、１４……ターンアツププラグ（折り曲げ手段）
、１５……プツシユリング（折り曲げ手段）。 FIG. 1 is a cross-sectional view of an embodiment of this invention, and FIG. 2 is a longitudinal cross-sectional view of the above-mentioned embodiment. 1...Drum, 1A...1st segment, 1B
...Second segment, 1m, 1n...Segment end face, 6...Sliding block that slides in the radial direction, 14...Turn-up plug (bending means)
, 15... Push ring (bending means).

Claims

[Scope of utility model registration request]

Belt bending means are provided on both sides of the drum, which is made up of a number of drum-forming segments arranged in a circular manner and slidable in the radial direction so that the diameter can be expanded and contracted, and the width of the drum wound on the drum is adjusted. In the pneumatic tire belt forming apparatus, the belt forming apparatus for a pneumatic tire is configured such that both side edges of a belt material having a width wider than the width of the belt material are folded over each other toward the center line of the drum by the belt bending means, wherein the drum forms two types of drums, a first and a second drum. segments are alternately arranged, and the second segment side end face of the first segment is an outwardly inclined face facing radially outward, and the first segment side end face of the second segment is an inwardly inclined face facing radially inward. and the sliding stroke of the first segment is set larger than the sliding stroke of the second segment, and the sliding stroke of the first segment is set larger than the sliding stroke of the second segment.
A belt forming device for a pneumatic tire, characterized in that an outwardly inclined surface of a segment end overlaps an inwardly inclined surface of a second segment end so that the surfaces of both segments form a perfect circle.