Winding drum used on unwinding machine

Abstract

The invention provides a winding drum used on an unwinding machine. The winding drum comprises a supporting base used for being fixed to a rotary support of the unwinding machine. A main shaft is transversely arranged on the supporting seat. A hydraulic oil cylinder is arranged at one end of the main shaft. A pull rod is arranged in the center of the main shaft and connected with a piston rod of the hydraulic oil cylinder. Four pyramid sleeves are evenly distributed on the outer side face of the main shaft. Each pyramid sleeve is provided with a sector plate. Sleeve rods used for mounting of the sector plates are movably arranged in the pyramid sleeves. Fixing devices used for fixing the sector plates to be in an expansion state or a shrinkage state are arranged on the pyramid sleeves. A sealing plate is arranged at the end of each sector plate and used for sealing the clearance between the corresponding sector plate and the adjacent sector plate. The winding drum further comprises a controller. The output end of the controller is connected with the hydraulic oil cylinder, first solenoid valves, second solenoid valves and switching circuits. The winding drum has the beneficial effects that a pull rope is prevented from being broken, and the service life is prolonged; and the situation that first springs retract due to too large pressure of a steel belt is avoided, and the expansion effect of the steel belt is improved.

Description

technical field [0001] The invention relates to an uncoiler structure, in particular to a reel used on the uncoiler. Background technique [0002] The uncoiler is a special equipment for metal plate leveling. It is used for leveling steel plates and uneven plates. It can be composed of uncoiling, leveling, shearing production lines and other plate product production lines according to relevant configurations. In the prior art, the uncoiler includes a reel, which is used for coiling the steel strip during uncoiling or rewinding. The reel includes a main shaft, four fan-shaped plates, four pyramid sleeves, pull rods, hydraulic cylinders and two support seats. The main shaft is movably installed on the slewing support of the uncoiler through the two support seats. Installed on the main shaft between the two support bases, the pull rod passes through the center of the main shaft, the rear end of the pull rod is connected with the piston rod of the hydraulic cylinder, and each p...

AI Technical Summary

Problems solved by technology

[0003] 1) When the reel is in the expanded state, the steel belt exerts great pressure on the reel, and it is easy to compress the first spring back, and the expansion effect cannot be achieved;

[0004] 2) When the reel is in the shrinking state, the stay cord is in a tight state for a long time, which makes the stay cord very easy to break and has a short service life;

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