| 摘要 |
A roller shaft sagging prevention apparatus for a glass of flat panel display using compressed air is provided to prevent a roller shaft from being sagged by sliding pistons by compressed air, and to save manufacturing cost by reducing a diameter of the roller shaft. A roller shaft sagging prevention apparatus for a glass of flat panel display using compressed air comprises: a roller shaft(110) rotating for moving a glass, plural rollers fixed to the outer circumference surface of the roller shaft, a support die supporting the rollers, a fixing housing(100) combined with the support die, a cylinder rod(130) rotating integrally with the roller shaft, first and second ball bearings(140,141) provided at right and left sides of the cylinder rod for reducing friction force between the roller shaft and the cylinder rod and the fixing housing, a thrust bearing(150) provided at one side of the first ball bearing for rotating the roller shaft, first and second air tension units(160,161) for preventing the roller shaft from being sagged by injecting compressed air into the fixing housing, first and second sliding pistons sliding by pushing force of the compressed air for preventing the roller shaft from being sagged, and a roller shaft fixing nut(190) provided at the other side of the fixing housing for fixing the roller shaft.
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