| 摘要 |
PURPOSE: A powder supply system of shrinkage film manufacturing machine is provided to produce a tube successively by rotating a shaft and an impeller using friction force between a tube and a friction roller without an external power source and a power. CONSTITUTION: A powder supply system of shrinkage film manufacturing machine comprises an inner powder spray unit(100). The inner powder spray unit consists of a pressing rollers(20,21), a support roller(30), a storage hopper(40), a shaft(50), a vertical and horizontal helical gears, a pair of friction roller, and an impeller(90). The pressing roller is driven in compressed state to keep maintains the expansion of a tube(1) cylindrical. The support roller guides the movement of the expanded tube with the diameter of the expanded tube narrowed. The storage hopper is filled with the powder. The shaft perpendicularly passes through the storage hopper. The toothed gear direction of the vertical helical gear is formed by 45° in the upper end of a shaft. The friction roller rotates by the friction in the movement of a tube. The toothed gear direction of the horizontal helical gear is formed by 45° to mesh with the vertical helical gear. The impeller spreads out the powder towards the inside wall of a tube.
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