To provide a manufacturing method of a toothed belt of a thermoplastic elastomer good in the arrangement of core wires, having high dimensional accuracy and enhanced in belt life by sufficiently surrounding the core wires by the thermoplastic elastomer to enhance adhesiveness.
In the manufacturing method of the toothed belt made of the thermoplastic elastomer by embedding the core wires in belt backs so as to extend them longitudinally and providing tooth parts to at least one of the belt backs at a predetermined interval, the core wires 16 are wound spirally around a inner mold 3 wherein longitudinally extending groove-like parts 12 and protruded parts 13 are alternately provided along a circumferential direction and, after the inner mold 3 is installed with respect to an outer mold 2b, the thermoplastic elastomer is allowed to flow in the winding direction of the core wires 16 from the film gate 46 wherein the winding width of the core wires 16 is set to the maximum gate width in the winding direction of the core wires 16 to integrally mold a belt tooth layer 15 and a belt back layer 17 at the same time to demold a belt sleeve 18 from the inner mold 3. The toothed belt is finished from the belt sleeve 18.
HIOKI KATSUYUKI
KAWAHARA KAZUTOMO
TAGAWA TAKAYUKI
| JPH02151425A | 1990-06-11 | |||
| JP2003025372A | 2003-01-29 |
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