& nbsp; Jinan Zeye Machine Tool Manufacturing Co., Ltd. mainly produces slitting machines, uncoiling machines, leveling machines, and uncoiling leveling cutting lines. The uncoiler is receiving increasing attention from people, so what is the performance of the uncoiler core shaft? Below, Zeye will introduce to you the unwinding machine you are currently using or about to use, so that you can have a deeper understanding.The unwinding mechanism shaft is connected to four fan-shaped plates with inclined dovetail grooves on four end faces. Each fan-shaped plate is prevented from axial movement by a radial slide at the tail end, but can achieve radial expansion and contraction. There is a rotating oil cylinder connected to the tail end of the drum shaft, and the piston rod of the oil cylinder drives the front four sided shaft to slide axially through the pull rod at the center of the drum shaft, thereby driving the radial expansion and contraction of the sector plate. The drum can increase its nominal diameter by adding four fan-shaped plates. The unwinding machine frame can move on the guide rail of the machine base, driven by a hydraulic cylinder, and can achieve center position control. To enhance the stability of the drum, a support arm device is designed at the head of the drum. When there is a steel coil on the drum, the support arm is driven by an oil cylinder to support the head of the drum. Normally, the support arm retracts without affecting the winding of the steel coil.  & nbsp; Structure of unwinding machine: The unwinding machine body is a welded box structure, and the variable frequency speed regulating motor drives the drum shaft to provide the main power for the unwinding machine after being reduced by the gearbox. The reel of the uncoiler is a hollow shaft supported by two bearings on the gearbox body, with a transmission spur gear installed between the bearings.The gearbox is lubricated through forced lubrication and is equipped with two constant speed motors for a closed-loop oil lubrication system. The core shaft is a cantilever structure, and its front end is supported by an external support bearing during unwinding to maintain the rigidity and stability of the unwinding machine.