METHOD FOR MANUFACTURING FLAT SPIRAL SPRING

• Main Authors: GOTO AKIO, SATO AKIHITO
• Format: Patent
• Language: English; Japanese
• Published: 16.08.2018
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a method for manufacturing a flat spiral spring capable of forming the flat spiral spring made of a resin material and tightly wound up in a closely contacted state.SOLUTION: A method for manufacturing a flat spiral spring includes: a first primary winding step S1 for tightly winding up a belt-like member 1 made of a resin material in a closely contacted state such that one end 1a is inside and the other end 1b is outside; a first heating and cooling step S2 for heating and then cooling the belt-like member 1 while maintaining the tightly wound up state in the first primary winding step S1; a second primary winding step S3 for tightly winding up the belt-like member 1 in a closely contacted state in the same direction as that in the first primary winding step S1 such that the one end 1a is outside and the other end 1b is inside; and a second heating and cooling step S4 for heating and then cooling the belt-like member 1 while maintaining the tightly wound up state in the second primary winding step S3.SELECTED DRAWING: Figure 1 【課題】樹脂材料からなり、密接した状態で巻き締められたぜんまいばねを形成することが可能なぜんまいばねの製造方法を提供する。【解決手段】樹脂材料からなる帯状部材１を、一端１ａが内側で他端１ｂが外側となるように密接した状態で巻き締める１回目の１次巻き工程Ｓ１と、１回目の１次巻き工程Ｓ１で巻き締めた状態を維持しながら、帯状部材１を加熱した後、冷却する第１加熱冷却工程Ｓ２と、帯状部材１を、一端１ａが外側で他端１ｂが内側となるように、１回目の１次巻き工程Ｓ１と同方向に密接した状態で巻き締める２回目の１次巻き工程Ｓ３と、２回目の１次巻き工程Ｓ３で巻き締めた状態を維持しながら、帯状部材１を加熱した後、冷却する第２加熱冷却工程Ｓ４と、を含むことを特徴とする。【選択図】図１