Method and device for manufacturing rubber bend pipe

Details Method and device for manufacturing rubber bend pipe Method and device for manufacturing rubber bend pipe

1993-09-23

1995-06-13

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Anti-stick or adhesion preventing coating

29262, 29282, 264134, 2642975, 2642978, 264334, 264339, 425 90, 425341, 425392, 4254031, 425436RM, B29C 3358, B29C 5308

Patent

active

054240158

ABSTRACT:
A method for manufacturing a curved rubber pipe is provided with a guide member (3) arranged concentrically with a mandrel (2, 402). A straight rubber semi-finished product (4) of an unvulcanized or semi-vulcanized rubber is inserted into the guide member (3). A die lubricant can be applied only to the inside of the rubber semi-finished product (4) over its whole length. The rubber semi-finished product (4) is fitted on the mandrel (2, 402) by pushing the product by a head (7) mounted on a leading end of an arm (6). One end of the curved rubber pipe (1) is gripped after vulcanizing by a gripping member (10) and is extracted from the mandrel (2, 402). By this method, it is possible to fit and smoothly extract the rubber semi-finished product (4). The method can also easily be automated.

REFERENCES:
patent: 2366853 (1945-01-01), Greene
patent: 3787950 (1974-01-01), Bagby
patent: 3857158 (1974-12-01), Costello
patent: 3925874 (1975-12-01), Moyers
patent: 4134784 (1979-01-01), Badberg et al.
patent: 4500485 (1985-02-01), Williemsen et al.
patent: 4537736 (1985-08-01), Peltzman et al.
patent: 4801419 (1989-01-01), Ward et al.
patent: 4847094 (1989-07-01), Parmann
patent: 5194208 (1993-03-01), Monthey et al.

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