Segmented mold for tire casing

Details Segmented mold for tire casing Segmented mold for tire casing

1980-07-08

1981-09-15

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Reshaping, resizing or vulcanizing means for tire, tire...

Sectional female mold including locking or clamping assembly...

425 46, 425 38, B29H 502

Patent

active

042894638

ABSTRACT:
A segmented mold for molding tire casings has a fixed lower mold part for molding one side wall of the tire, a series of molding segments for molding the tread movably mounted on the lower mold part to be slidable and swingable along radial planes, an axially movable upper mold part for molding the other side wall of the tire, and means cooperating with the segments to effect the movement thereof along the radial planes. The mold also has elastic members interposed between the fixed lower mold part and the segments for continously urging each of said segments toward an open position in which the segments are radially retracted and swung upward and to the outside of the mold to free a passage for the tire when the upper mold part is lifted off. These members include a first spring for pulling each segment radially outward and a second spring for tilting each segment vertically upward toward an open position.

REFERENCES:
patent: 3553789 (1971-01-01), Allitt
patent: 3730658 (1973-05-01), Marra
patent: 3989791 (1976-02-01), Tippin
patent: 3990823 (1976-11-01), Le Moullac

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