Tire manufacturing drum having simultaneous axial and radial adj

Details Tire manufacturing drum having simultaneous axial and radial adj Tire manufacturing drum having simultaneous axial and radial adj

1998-05-04

2000-05-09

Knable, Geoffrey L.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Tire body building type

156417, 156420, B29D 3024

Patent

active

06058999&

ABSTRACT:
A rotatable drum (10) for use in the manufacture of vehicle tires, the drum including a plurality of segments which collectively define an outer circumference (32) of the drum. The segments are divided into first and second end portions (15,17) which are individually mounted for axial and radial movement between expanded and retracted positions relative to the rotational axis (16) of the drum. Each end portion of segments is further divided into first and second groupings (23,25), the segments (18,18') of the first and second groupings (23,25) being disposed in alternating juxtaposition with respect to the segments of the second grouping (18') and with the segments of the first grouping being movable axially further and radially faster than the segments of the second grouping as the segments are moved between their expanded and retracted positions so that the segments of the second grouping are received in overlying relationship to the segments of the first grouping as the segments of the first and second groupings are simultaneously moved radially inward toward the rotational axis of the drum. A third grouping 23 of the segments of each end portion of segments is provided for, with these segments (19,19') being received in overlying relationship to the segments of the first and second groupings. Further, in a preferred embodiment, each segment is provided with a shell member (24,26), with the shell members collectively defining the outer cylindrical surface (32) of the drum. A method for the production of a rotatable cylindrical drum (10) and a method for the manufacture of an OTR vehicle tire are disclosed.

REFERENCES:
patent: 2614057 (1952-10-01), Ericson et al.
patent: 3547733 (1970-12-01), Leblond
patent: 4220494 (1980-09-01), Kawaida et al.
patent: 4425180 (1984-01-01), Samokhvalov et al.
patent: 4445962 (1984-05-01), Felder

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