Plastic article or earthenware shaping or treating: apparatus – Press forming means – press reshaping means – or vulcanizing... – Cooperating endless belts
Patent
1992-12-16
1994-08-09
Bushey, Charles S.
Plastic article or earthenware shaping or treating: apparatus
Press forming means, press reshaping means, or vulcanizing...
Cooperating endless belts
100151, 100154, 1565835, B29C 4300
Patent
active
053360770
ABSTRACT:
A belt press has a frame having horizontally extending and vertically spaced upper and lower plates defining a horizontally extending gap, respective upper and lower sets of drums rotatable on the frame, respective upper and lower endless belts spanned over the respective upper and lower sets of drums and each having a working stretch lying between the plates, and respective upper and lower sets of tubular rollers engaged between the working stretches and the respective plates. Respective upper and lower sets of rods traverse the respective rollers and are connected together as upper and lower endless chains. A drive connected to the drums advances the belts to move the working stretches horizontally in a transport direction to displace a workpiece in the direction through the gap and the plates are urged together with a pressure of between 300N/cm.sup.2 and 600N/cm.sup.2. Each tubular roller has a wall thickness greater than 2 mm, is formed of a material such that it is not substantially deformed when compressed diametrally between the respective plate and the respective working stretch, has a mass which is smaller by a factor of between 0.30 and 0.50 than a solid rod of identical material and outside dimensions, and has a geometrical moment of inertia that is smaller by a factor of between 0.50 and 0.65 than a solid rod of identical material and outside dimensions.
REFERENCES:
patent: 2137505 (1938-11-01), Osgood
patent: 2137506 (1938-11-01), Osgood
patent: 3973483 (1976-08-01), Appenzeller
patent: 4213748 (1980-07-01), Ahrweiler
patent: 4417866 (1983-11-01), Sitzler
patent: 4480978 (1984-11-01), Gerhardt
patent: 4494648 (1985-01-01), Held
patent: 4613293 (1986-09-01), Gerhardt
patent: 4714015 (1987-12-01), Stabler
patent: 4807525 (1989-02-01), de Brock
Bushey Charles S.
Dubno Herbert
G. Siempelkamp GmbH & Co.
Wilford Andrew
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