Tire molding apparatus

Details Tire molding apparatus Tire molding apparatus

1984-04-23

1985-04-09

Flint, Jr., J. Howard

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Tire body building type

156420, B29H 1716

Patent

active

045100128

ABSTRACT:
A tire molding apparatus having a hollow rotary shaft, a plurality of first drum segments are arranged substantially in the form of a cylinder around the front end portion of said rotary shaft. The second drum segments are paried with the first drum segments, thus forming a molding drum. A diameter changing mechanism is provided between the rotary shaft and the first and second drum segments for transmitting rotation of said rotary shaft to the first and second drum segments and additionally for moving the first and second drum segments radially. A plurality of threaded shafts, each having both end portions threaded in the opposite directions, are screwed respectively into the first and second drum segments thus paired. Rotation of the threaded shafts causes the first and second drum segments to move towards each other or to move away from each other to change the width of the molding drum. A drive shaft inserted into said rotary shaft allows the drive shaft to rotate separately from the rotary shaft and a supporting member is coupled to the front end of the rotary shaft in such a manner that the supporting member can turn together with the rotary shaft. A plurality of rotating shafts are supported on the supporting member with the rotating shafts being synchronously turned through an angle by the drive shaft. A plurality of transmission members transmit rotation of the rotating shafts to the threaded shafts, respectively.

REFERENCES:
patent: 2313035 (1943-03-01), Breth
patent: 2514215 (1950-07-01), Stevens et al.
patent: 3485700 (1969-12-01), Cooper et al.
patent: 3787262 (1974-01-01), Appleby et al.
patent: 3795564 (1974-03-01), Mallory
patent: 3813271 (1974-05-01), Riggs
patent: 3868203 (1975-02-01), Turk
patent: 4206010 (1980-06-01), Gutknecht
patent: 4312696 (1982-01-01), Bryant
patent: 4425180 (1984-01-01), Samokhvalov et al.

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