Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
FRICTION SHAFT FOR SLITTER
Document Type and Number:
WIPO Patent Application WO/2019/182289
Kind Code:
A1
Abstract:
The present invention relates to a friction shaft for a slitter, including a winding pipe formed on the outer surface thereof, the winding pipe for winding on a roll a unit material formed by cutting a raw material such as various kinds of papers, fabrics, or films at predetermined intervals. The present invention comprises a first rotation shaft rotated by a driving motor and supplied with compressed air from an air supply unit. The first rotation shaft includes a movement passage formed therein to be long longitudinally of the first rotation shaft, and first and second supply holes formed on one side of the outer surface thereof to be connected to the movement passage, for being supplied with compressed air, wherein movement holes connected to the movement passage along the longitude of the first rotation shaft are formed at predetermined intervals on one side opposite to the outer surface and are formed at predetermined intervals along the circumference of the first rotation shaft, a first discharge hole is formed on one side opposite to the outer surface to be longer than the moving hole longitudinally of the first rotation shaft so as to be formed between a plurality of moving holes at predetermined intervals along the circumference of the first rotation shaft, an engagement jaw protrudes from an open one end of the first discharge hole, and a connection hole is formed therein to connect the movement passage and the first discharge hole. The present invention comprises a pipe provided in the first discharge hole and having a third supply hole connected to the connection hole, and a plurality of torque brake pads provided adjacent to the first discharge hole, having a first friction part protruding from the outer surface thereof, and having an engagement part engaged with the engagement jaw protruding from an outer surface around the first friction part. The present invention comprises a second rotation shaft provided so as to be movable along the movement passage, and the second rotation shaft has a movement groove for moving compressed air supplied from the second supply hole to the connection hole, the movement groove being formed to be long on one side of the outer surface in a circular shape longitudinally of the second rotation shaft. The second rotation shaft has a first fastening hole facing the movement hole along longitude of the second rotation shaft, the first fastening hole being formed on one side opposite to the outer surface at predetermined intervals and formed along the circumference of the second rotation shaft at predetermined intervals. The present invention includes a pressurizing member which is fastened to the first fastening hole and exposed in the movement hole, and a plurality of first rotation pipes which are provided to be adjacent to each other on the outer surface of the first rotation shaft along the longitude of the first rotation shaft and have winding pipes formed on the outer surface thereof. In the first rotation pipe, a second friction part which rubs against a first friction part protrudes from the inner surface of the first rotation pipe, first and second fitting spaces are respectively formed on both sides of the second friction part, fitting holes are formed at predetermined intervals along the circumference of the first rotation pipe on one surface of the second friction part facing the second fitting space, and second discharge holes connected to the second fitting spaces are formed on the outer surface thereof at predetermined intervals along the circumference of the first rotation pipe. The present invention comprises a second rotation pipe which is movably fitted in the second fitting space and formed on the outer surface of the first rotation shaft. In the second rotation pipe, engagement holes facing the second discharge hole are formed on the outer surface at predetermined intervals along the circumference of the second rotation pipe, a first inclined surface is formed in the engagement hole, the fitting holes facing the fitting holes are formed on the outer surface at predetermined intervals along the circumference of the second rotation pipe, an engagement jaw protrudes from one side of the inner surface adjacent to the fitting hole to form a third fitting space on one side opposite to the inner surface thereof, first and second bearings are respectively fitted to the first and third fitting spaces and installed on the outer surface of the first rotation shaft so as to be respectively engaged with the second friction part and the engagement jaw, a first elastic member is fitted into the fitting hole, and a guide member is installed in the second discharge hole, has a second inclined surface, guided by the first inclined surface, formed on one side of the outer surface thereof, includes an engagement hole formed on one side opposite to the outer surface, and has a second fastening hole formed on the outer surface around the engagement hole. A second elastic member is simultaneously fitted in the engagement hole of the plurality of guide members. The present invention comprises a clamping lug provided in the second discharge hole and having a third fastening hole that is fastened to the second fastening hole with a fastening member. When the compressed air is supplied to the movement passage through the first supply hole, the pressure of the compressed air causes the second rotation shaft to move along the movement passage, so that the pressure member moves along the movement hole, the second bearing and the second rotation pipe are sequentially pressurized by the moving pressure member, the second inclined surface is guided by the first inclined surface, and the clamping lug is discharged from the second discharge hole. When the discharged clamping lug is brought into close contact with the inner surface of the winding pipe, and the compressed air is supplied to the third supply hole of the tube sequentially through the second supply hole, the movement groove, and the connection hole, the tube is expanded and the first friction part of the torque brake pad is discharged from the first discharge hole and brought into close contact with the second friction part of the first rotation pipe.

More Like This:
JP3662240Mandrel
WO/2011/047704WINDING BODY
Inventors:
LEE SOO HYUNG (KR)
LEE JAE SIK (KR)
Application Number:
PCT/KR2019/002973
Publication Date:
September 26, 2019
Filing Date:
March 14, 2019
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
YUL RIM AIR SHAFT CO LTD (KR)
International Classes:
B65H75/24; B65H18/04
Foreign References:
KR20140083406A2014-07-04
JP4299915B22009-07-22
KR101232728B12013-02-13
JP3214223U2017-12-28
KR100824041B12008-04-21
KR20140083406A2014-07-04
Attorney, Agent or Firm:
KWON, Tae Kyun (KR)
Download PDF: