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US 2003/0141630 A1Published application
Rubber crawler producing method
AssigneeBridgestone Corporation
InventorYasuaki Fujita
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AssigneeBridgestone Corporation
InventorYasuaki Fujita
Estimating the term…
It is to provide a method of manufacturing a rubber crawler which enhances a degree of freedom in the handling in a vulcanization-shaping of a crawler part and largely improves vulcanization shapability and operability and facilitates an arrangement of an auxiliary device or the like. In a method of manufacturing a rubber crawler comprising a first vulcanization step of vulcanization-shaping by simultaneously heating and pressing inner circumferential side rubbers (2A, 2B) and ground side rubbers (3A, 3B) having a length corresponding to about a half circumferential length of an endless ring-shaped reinforcing cord (1) with a middle mold (6) arranged in an inner circumferential side of the reinforcing cord (1) and upper mold (4) and lower mold (5) arranged up and down on an outer circumferential side of the reinforcing cord (1) and a second vulcanization step of vulcanization-shaping rubbers having a length corresponding to a remaining half circumferential length in the same manner as described above, at least a middle mold (6) is heated at each step by flowing heat medium through flow paths (7) formed in the mold, whereby the thickness of at least the middle mold (6) is made thin.
A method of manufacturing a rubber crawler comprising a first vulcanization step of vulcanization-shaping by simultaneously heating and pressing inner circumferential side rubbers and ground side rubbers each having a length corresponding to approximately a half circumferential length of an endlessly ring-shaped reinforcing cord among a middle mold arranged at an inner circumferential side of the reinforcing cord and upper and lower molds arranged upside and downside on an outer circumference of the reinforcing cord, and a second vulcanization step of subsequently vulcanization-shaping rubbers corresponding to approximately a remaining half circumferential length of the reinforcing cord in the same manner as in the first vulcanization step, characterized in that at least the middle mold is heated by passing heat medium through flow paths formed in such a mold at each vulcanization step.
Dependencies are inferred from the claim text.