Patent ID: 6800236
Filing Date: 2004-10-05
Classification: B29C,B29D

Abstract:
A crawler molding method, in which structural components of a crawler are placed between an outer mold and an inner mold to form an endless shape and vulcanized to integrally mold a crawler, comprising:disposing the structural components of the crawler on an outer peripheral surface of the inner mold, which the inner mold is dividable in the axial direction of the crawler; and radially contracting and pressurizing toward the inner mold, by a radially contracting means, a diameter of a circle defined by a plurality of outer molds which are divided and disposed along the outer peripheral surface of the inner mold, whereby the structural components of the crawler are integrally vulcanized, wherein the radially contracting means is formed by on of: an outer mold and a radially contractible inner frame formed on an outer peripheral side of the outer mold, the radially contractible inner frame having an inclined surface inclining in the width direction of the crawler and formed on an outer peripheral surface of the inner frame, the inner frame being movable in the axial direction and in the radial direction with respect to an inner peripheral inclined surface of an outer frame via the inclined surface: and an outer mold, the outer mold having an inclined surface inclining in the width direction of the crawler and formed on an outer peripheral surface of the outer mold, the outer mold being movable in the axial direction with respect to an inner peripheral inclined surface of an outer frame via the inclined surface; and the structural components of the crawler are integrally vulcanized by moving the outer frame in the width direction of the crawler to radially contract and pressurize the inner frame and the outer molds.