METHOD OF MANUFACTURING PIPE JOINT

• Main Authors: IMURA HAJIME, MORIBE HIROSHIGE
• Format: Patent
• Language: English; Japanese
• Published: 10.10.2019
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide a method of manufacturing a pipe joint capable of stably supporting an insert member in a mold.SOLUTION: A manufacturing method of a pipe joint provided with a connecting portion having a screw portion is a method of manufacturing a first header piece including a third connection portion 17 having a screw portion 16, in which the screw portion 16 is formed with an insert member 35 different from a pipe joint body 11 constituting the first header piece, a molten resin is injected from a gate 57 of a mold 50 into a cavity 53 in the mold 50 to mold the pipe joint body 11 after the insert member 35 is disposed in the mold 50 when molding the first header piece, then, the mold 50 is opened, then, in the connection portion 17, the first header piece is manufactured by extracting the mold 50, and the insert member 35 is disposed so that an inner space faces the gate 57 of the mold 50.SELECTED DRAWING: Figure 10 【課題】 インサート部材を金型内において安定して支持できる管継手の製造方法を提供すること。【解決手段】 ねじ部１６を有する第３の接続部１７を備えた第１ヘッダーピースの製造方法であって、第１ヘッダーピースを構成する管継手本体１１とは別のインサート部材３５でねじ部１６を形成し、第１ヘッダーピースの成形時に金型５０内にインサート部材３５を配置した後、金型５０のゲート５７から金型５０内のキャビティ５３に溶融樹脂を射出して管継手本体１１を成形し、次いで金型５０を型開きし、次いで接続部１７においては金型５０を抜き出すことで第１ヘッダーピースを製造し、インサート部材３５は内空間が金型５０のゲート５７に対向して配置されている。【選択図】 図１０