Patent ID: 6024820
Filing Date: 2000-02-15
Classification: B29C,B30B,Y10T

Abstract:
A mold-changing device used for an apparatus that has a press-gluing station to which a vertically movable cope is detachably attached, a groove-fitting station to which a vertically movable groove-fitting mold is detachably attached, a receiving plate having an opening, a drag disposed under the receiving plate, and a truck to run horizontally between the press-gluing station and the groove-fitting station to carry the drag that is detachably attached to the truck, wherein the cope has a first and a second portion, the first portion being able to pass through the opening of the receiving plate, the receiving plate and the cope are configured to be supported on the drag so that the truck can carry an assembly comprising the drag, the receiving plate and the cope from the press-gluing station to the groove-fitting station, and the groove-fitting mold is configured to be lowered onto the assembly in said groove-fitting station, said mold-changing device comprising:at least one first cylinder mounted on the press-gluing station for supporting and vertically moving the receiving plate;bushes attached to the bottom of the receiving plate;at least one second cylinder mounted on the drag for engaging said bushes to receive the receiving plate from said at least one first cylinder;positioning bushes mounted on the drag;positioning pins downwardly projecting from the bottom of the second portion of the cope for engaging said positioning bushes on the drag;positioning bushes mounted on the cope; andpositioning pins downwardly projecting from the groove-fitting mold for engaging said positioning bushes of the cope, wherein the at least one first cylinder and the at least one second cylinder are operable in a mold-changing mode to fit together the receiving plate, the drag, the groove-fitting mold, and the cope using the bushes attached to the receiving plate, the positioning bushes mounted on the drag, the positioning pins projecting from the second portion of the cope, the positioning bushes mounted on the cope, and the positioning pins projecting from the groove-fitting mold, so that the fitted-together receiving plate, drag, groove-fitting mold, and cope can be moved together as a unit on the truck out of the groove-fitting station.