Document Type and Number:
Japanese Patent JPH0367497
Kind Code:
B2
Abstract:
PURPOSE:To improve the quality of a poduct by adding a process of inserting a support means functioning as insert into the tube body to the production process of a flange integral with the tube body to uniformize the thickness of the tube body portion where the insert is put. CONSTITUTION:A short tube P made of a hard vinylchloride is mounted and a hot fluid is fed to a nozzle hole 8 of a mobile insert 6 at a very low pressure to soften the short tube P. The mobile insert 6 is moved and stopped at the position of an inner die 4. Then, a mobile mount plate 2 is brought close to the inner die 4 and a hot fluid is fed to the nozzle 8 at a low pressure (3-4kg/cm<2>) to bulge the short tube P radially. After the mobile mount plate 2 further approaches it, the supply of the hot fluid is stopped and the bulged portion is bent in two closely. Finally, the short tube P is taken out of the inner die 4 and a clamp part 16 is cut off to obtain a flanged tube joint.
Inventors:
NAKAI TERUO
SAKAI HATSUO
SAKAI HATSUO
Application Number:
JP5659984A
Publication Date:
October 23, 1991
Filing Date:
March 24, 1984
Export Citation:
Assignee:
MEIHO KOGYO KK
International Classes:
B29C49/00; B29C49/48; B29C55/30; B29C57/00; B29C57/08; B29L23/00
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