resilient tubular container, its manufacturing process and design tools

摘要

1436217 Seaming non-metallic sheet material V FLAX 3 Aug 1973 [3 Aug 1972] 36993/73 Heading B5K [Also in Division B8] In the manufacture of a flexible tubular container, an end piece 2 is friction welded to a flexible tubular body 1 by disposing the endpiece 2 with a peripheral region thereof within a marginal edge portion 20 of the body 1 and rotating the body 1 and the endpiece 2 relative to one another while the endpiece peripheral region is radially outwardly deformed into frictional engagement with the body marginal edge portion, there being no rubbing movement between the endpiece 2 and apparatus for effecting the friction welding. The apparatus comprises a pressure tool 4, Fig. 4, rotatable in a housing 5 by a shaft 6 and a ball-race 7. A resilient member 8 thrusts the tool 4 against the endpiece 2 resting on an an abutment tool 9 rotatable on a fixed mandrel 10. The tool 9 is positioned inside the body 1 which is fitted into an external sleeve 11. In use, the tool 9 presses on the inside of the endpiece 2 thus increasing its initial diameter. The housing 5 is provided with an inlet 13 and an outlet 14 for compressed air to lubricate the tool 4, a circular relief 15 being provided for this purpose. In another embodiment, Fig. 5, the body is fitted over a fixed mandrel 16. Three constructions of container are illustrated, Figs. 1-3 (all not shown).