PROBLEM TO BE SOLVED: To provide a method for manufacturing a filler tube that enhances durability.SOLUTION: In a primary step, a cylindrical material is sucked into contact with an inner circumferential surface of primary molds 123 and 124 to mold a primary molding body 60. The primary molds 123 and 124 are provided with suction grooves 142 for sucking the cylindrical material into contact with the inner circumferential surface of the primary molds 123 and 124 in a region corresponding to a longitudinal central portion 33 of the primary molding body 60. The primary molds 123 and 124 are not provided with suction grooves in a region corresponding to a longitudinal end portion 61 of the primary molding body 60, or are provided with suction grooves 162a having a weak sucking force. In a secondary step, a flange 31c is molded by a flare molding, expanding the longitudinal end portion 61 of the primary molding body 60 outward in the radial direction, using secondary molds 210 and 220.SELECTED DRAWING: Figure 3

    【課題】耐久性を向上することができるフィラーチューブの製造方法を提供する。【解決手段】一次工程として、筒状素材を一次金型123,124の内周面に吸着させることによって、一次成形体60を成形する。一次金型123,124は、一次成形体60の長手方向の中央部33に対応する領域において、筒状素材を一次金型123,124の内周面に吸着させるための吸引溝142を備える。一次金型123,124は、一次成形体60の長手方向の端部61に対応する領域において、吸引溝を備えない、または、弱い吸引力を有する吸引溝162aを備える。二次工程として、二次金型210,220を用いて、一次成形体60の長手方向の端部61を径方向外方に広げるフレア成形により、フランジ31cを成形する。【選択図】図3


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    Title :

    METHOD FOR MANUFACTURING FILLER TUBE


    Additional title:

    フィラーチューブの製造方法


    Contributors:

    Publication date :

    2018-08-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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