Importance

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Abstract

A molding machine including a plurality of carriages for carrying mold blocks in an axial direction and a track for the carriages including a molding section, the track including spaced apart channels receiving the carriage wheels for guiding the carriages along the track. The carriages each include wheels on opposite sides of the carriage, a first set of oppositely facing and axially extending flat surfaces on one side of the carriage, a second set of oppositely facing and axially extending flat surfaces on the other side of the carriage, and centering rollers having facing rolling surfaces spaced apart a distance X. The track includes first and second sets of track rollers associated with one of the channels, the first and second track roller sets defining a first pair of axially extending, parallel facing rolling planes whereby the first and second roller sets engage the first set of flat surfaces of carriages in the molding section. The track also includes third and fourth sets of track rollers associated with the other of the channels, the third and fourth track roller sets defining a second pair of axially extending, parallel facing rolling planes whereby the third and fourth roller sets engage the second set of flat surfaces of carriages in the molding section. The track further includes a central guide track disposed between the channels and engaged on opposite sides by the centering rollers of carriages in the molding section, the engaged opposite sides of the central guide track being spaced apart the distance X.

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First Claim