Synthetic resin hose and manufacturing method thereof

Abstract

Abstract Translated from Japanese (57)【要約】 （修正有） 【課題】 従来の合成樹脂ホースは硬鋼線と導電線とを ホースの全長にわたって螺旋状に配設してあるため、ホ ース全体の重量が重く、長時間の使用で疲労が大きい。 【解決手段】 導電線ｋまたは絶縁材ｒで被覆された被 覆導電線Ｋが管壁１の軸方向に沿って直線状に配設さ れ、該導電線ｋまたは被覆導電線Ｋにおける内周面側の 全長を管壁１が覆い、その外周側を管壁１の山部２だけ が包み込み覆っている構造。製造方法は成形金型を用 い、その内部に導電線ｋまたは被覆導電線Ｋを供給する 工程、金型内に溶融樹脂をチューブ状に押し出し供給す る工程、該チューブ内に高圧空気を供給し、溶融樹脂チ ューブを金型の凹凸面に沿うように膨張圧接させ、同時 に導電線ｋまたは被覆導電線Ｋの外周側を包み込む工 程、樹脂チューブを冷却、保形させる工程、成形した樹 脂ホース本体を金型を開いて取り出す工程とからなる。 (57) [abstract] (with correction) [PROBLEMS] The conventional synthetic resin hose has a hard steel wire and a conductive wire spirally disposed over the entire length of the hose, so that the entire hose is heavy and prolonged. Great fatigue due to use. SOLUTION: A coated conductive wire K coated with a conductive wire k or an insulating material r is linearly arranged along an axial direction of a tube wall 1, and an inner peripheral surface side of the conductive wire k or the coated conductive wire K. The structure is such that the entire length of the tube wall is covered by the tube wall 1, and the outer peripheral side of the tube wall 1 is wrapped and covered only by the ridges 2. The manufacturing method uses a molding die, a step of supplying a conductive wire k or a coated conductive wire K therein, a step of extruding and supplying a molten resin into a mold into a tube, supplying high-pressure air into the tube, A step of expanding and pressing the molten resin tube along the uneven surface of the mold, simultaneously wrapping the outer peripheral side of the conductive wire k or the coated conductive wire K, a step of cooling and maintaining the shape of the resin tube, Opening the mold and removing it.

Inventors

• 👤 Hiroyuki Masui
• 👤 宏之 桝井

Bibliographic Details