Apparatus for bending and tempering of thermoplastic sheets of d

Details Apparatus for bending and tempering of thermoplastic sheets of d Apparatus for bending and tempering of thermoplastic sheets of d

1984-07-20

1985-09-10

Kellogg, Arthur

Glass manufacturing

Glassworking or preform by or with reheating means

Planar sheet preform

65107, 65287, C03B 23033

Patent

active

045404259

ABSTRACT:
The rollers or curved rods and other elements supporting the glass sheets as well as the apparatus necessary for bending and/or tempering are preferably mounted on a pair of longitudinally flexible strips that rest on a pair of rigid templates having the desired curvature. Each flexible strip advantageously is a chain whose links are hinged on one another, these links being provided with flanges to which are fastened the rollers or curved rods, all other elements for supporting the glass sheets, and the elements necessary for bending and tempering. To permit modification of the curved profile, the templates are removable and interchangeable. To facilitate changing of the templates, the apparatus is equipped with a system for lifting the strips or chains. Such lifting system comprises one or more pivoting beams that are lifted by drive means such as a jack and a bent connecting rod. When the beams are raised, they lift the strip or chain off the template, thereby freeing the template to be replaced with a template having a different curvature.

REFERENCES:
patent: 3799752 (1974-03-01), Cheron
patent: 3801298 (1974-04-01), Bezombes
patent: 3831239 (1974-08-01), Hoff et al.
patent: 4054437 (1977-10-01), Uerberwolf et al.
patent: 4054438 (1977-10-01), Presta
patent: 4123246 (1978-10-01), Johnson
patent: 4139359 (1979-02-01), Johnson et al.
patent: 4203754 (1980-05-01), Potier
patent: 4292065 (1981-09-01), Nedelec et al.

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