| 摘要 |
<p>1,190,425. Making pipe connectors. ROBERTSHAW CONTROLS CO. 8 Sept., 1967 [12 Sept., 1966], No. 41172/67. Heading B5A. [Also in Divisions F1 and F2] In a combination of a set of conduits 37, Fig. 7, and a plug connector 40, the latter has flexible integral tubular extensions 44 projecting from a flat side and inwardly offset from a narrow peripheral side, the conduits being secured at the opposed flat side in fluid flow connection with passages through the connector body and tubular extensions. The plug connector 40, e.g. of plastics has aligned extensions 44, 45 on opposite sides of its body portion 41. Nipples 45 are softened by a solvent 53 and fitted to the ends of flexible plastics conduits 37. Alternative shapes of plug connectors are illustrated in Figs. 5, 6 and 11 (not shown). In a method of forming the plug assembly moulds 64, Fig. 15, are successively moved between stations by a conveyer belt 73, Fig. 10. At station 74 the conduit ends 79 are engaged with the small cylindrical parts 71 of mandrels 69 within mould chamber 65 and each conduit is cut off to length by cutters 80, the conduits 63 being reeled from rolls 82. At station 75 the liquid plastics material, e.g. a vinyl plastisol is fed into mould chamber 65 to submerge the conduit ends 79. At stations 76 and 77 the plastics material is successively cured by heater 85 and then cooled by cooling means 86. The plug assembly is ejected from the mould at station 78 by an air blow off 87. The plug assembly is used in a programme controller (25), Fig. 1 (not shown) in a pneumatic control system (see Division F1) of domestic appliance apparatus.</p> |
