Steel coil decoiler swell-shrink mechanism

• Main Authors: MEI RUMIN, CHENG TAO, DONG CHUNGUANG
• Format: Patent
• Language: Chinese; English
• Published: 13.02.2008
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING

The utility model discloses a steel coil uncoiler expansion and contraction device, the device includes a hollow core shaft, a pushed drawbar which is equipped in a hollow shaft, a pyramid cover, a bore bond, a fan-shaped board and a block; the pyramid cover and the fan-shaped plate are the inner and outer tilted wedge matched and connected by a slider; the titled wedge angle is from 14 degree to 15 degree, the main characteristic is that the pyramid cover and the fan-shaped plate are respectively equipped with a groove which avoids mutual interference movement. The utility model realizes the increasing expansion and contraction quantity purpose under the condition of small diameter and the small reciprocating trip of the pushing drawbar. The utility model has the characteristics of reasonable and compact structure, easy and practical operation, large radial expansion quantity and the wide range for the changes of the steel coil inner diameter.