METHOD OF MANUFACTURING SYNTHETIC RESIN UNION JOINT

• Main Authors: SAKAGUCHI, MASAYUKI, FUJII, HIROTO, KYOMEN, JUNSUKE
• Format: Patent
• Language: English; Japanese
• Published: 22.05.1986
• Edition: 4
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; CHEMISTRY; COMBINED OPERATIONS; COMPOSITIONS BASED THEREON; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERAL PROCESSES OF COMPOUNDING; HEATING; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MACHINE TOOLS; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; OTHER WORKING OF METAL; PERFORMING OPERATIONS; PHYSICS; PIPES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; TRANSPORTING; UNIVERSAL MACHINE TOOLS; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

A method of manufacturing a synthetic resin union joint consisting of inserting a box nut for a union joint into a union joint portion on the end of a pipe, the box nut having a smaller diameter than that of the collar of the union joint portion on the pipe end, employs means for coupling the union joint portion in which a union retaining collar of the box nut is softened by heat so that the diameter thereof is enlarged, and the box nut is fitted into the union joint portion so that the union retaining collar is beyond the collar of the union joint portion, and then the union retaining collar of the box nut is restored so that its diameter is reduced to its former size. Procédé consistant à introduire un écrou borgne d'un joint de raccordement dans une partie de joint de raccordement à l'extrémité d'une conduite, le diamètre de l'écrou borgne étant plus petit que celui du collier de la partie de joint de raccordement sur l'extrémité de la conduite. Ce procédé utilise un organe de couplage de la partie de joint de raccordement dans laquelle un collier de retenue de l'écrou borgne est ramolli par la chaleur de manière à en élargir le diamètre, et l'écrou borgne est introduit dans la partie de joint de raccordement de sorte que le collier de retenue se trouve au delà du collier de la partie de joint de raccordement, après quoi le diamètre du collier de retenue de l'écrou borgne est réduit jusqu'à sa taille normale.