| 摘要 |
PURPOSE: To provide an oil sealing device of screw to minimize leakage of oil by adjusting and maintaining a gap between screw seal and screw so that sealing efficiency is maximized considering characteristics of screw moved back and forth simultaneously at a time when the screw is rotated. CONSTITUTION: The oil sealing device of screw comprises a sleeve fixed to seal housing (6) of widthwise rolling apparatus; a ring shaped main seal (30) which is inserted into the sleeve, and on the inner circumferential surface of which screw thread engaged with screw is formed; a sub-seal (40) which is formed in a shape similar to the main seal and inserted into the sleeve with being spaced apart from the main seal in a certain distance, on the inner circumferential surface of which screw thread is formed in the same shape as the screw thread, and which has an oil guiding groove (49) in such a way that the inner and outer circumferential surfaces of the sub-seal are communicated with each other; gap adjusting bolts (60) with a plurality of which are arranged along the edge of the sub-seal and the main seal to elastically connect the sub-seal and the main seal to each other by passing through the sub-seal and the main seal in such a manner that tension of the sub-seal and the main seal is adjusted; and a seal stopper that is fixed to the upper surface of the sleeve by bolts to cover the upper surface of the sleeve with being partially hung on the sub-seal.
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