Strip steel coiling system, high-strength steel coiling method and high-strength steel production line

Abstract

The invention relates to a strip steel coiling system, a high-strength steel coiling method based on the strip steel coiling system and a high-strength steel production line adopting the strip steel coiling system. The coiling system comprises a coiling machine, a steering pinch roller and a coil unloading vehicle. The steering pinch roller is connected with the coiling machine through a strip penetrating guide plate, and a bending machine is arranged on the feeding side of the steering pinch roller; and at least one auxiliary pressing roller is arranged around a winding drum of the coiling machine, the axial directions of the auxiliary pressing rollers are parallel to the axial direction of the winding drum, and the auxiliary pressing rollers are provided with auxiliary pressing roller driving units so as to have working positions in rolling contact with a steel coil and standby positions away from the steel coil. The bending machine can straighten strip steel at the initial stage ofcoiling to prevent the strip penetrating guide plate from being damaged, the strip steel is made to generate plastic deformation at the final stage of coiling, rear tension can be provided for coiling, and bounce of the outer-ring strip steel can be reduced; and the auxiliary pressing rollers can enable the strip steel to be attached to the winding drum/steel coil in the coiling process, the winding effect of the strip steel is improved, and the problem that when high-strength steel and other steel types are wound, bumps exist near a jaw can be avoided.

Description

technical field [0001] The invention relates to a strip steel coiling system, a high-strength steel coiling method based on the strip steel coiling system and a high-strength steel production line using the strip steel coiling system. Background technique [0002] The high-strength steel market is gradually expanding. In order to increase the production capacity of equipment, the production of high-strength strip steel has gradually expanded from the previous production of single sheets to the direction of continuous production. In order to adapt to flexible and changeable production methods, high-strength strip steel coiling has become a difficult point. The main problems are as follows : [0003] 1) Since the high-strength steel is difficult to bend, head tilting or bowing will cause great damage to the threading guide plate, especially when entering the jaws, it is difficult to enter automatically; [0004] 2) When the steel strip clamped by the jaws is just started to b...

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Problems solved by technology

[0003] 1) Since the high-strength steel is difficult to bend, head tilting or bowing will cause great damage to the threading guide plate, especially when entering the jaws, it is difficult to enter automatically;

[0004] 2) When the steel strip clamped by the jaws is just started to be coiled, because the full tension cannot be established, generally only 50% tension can be used for coiling. At this time, it is difficult for the high-strength steel to adhere to the reel, especially near the jaws. It will bulge a bag, which will cause the steel coil to become a convex circle and cannot be a perfect circle, resulting in a reduction in the tension control accuracy of coiling;

[0005] 3) When coiling the last lap, due to the cutting of the strip tail, the tail of the strip loses the back tension, and the high-strength rebound will cause the last few laps to be uncoiled;

[0006] 4) When the coil is unloaded after coiling, due to the strong rebound force of the high-strength steel, when the jaws are opened, the springback of the strip will be stuck in the jaws and it is difficult to unload the coil;

[0007] 5) The resilience of the last lap of the steel coil is very large, especially the high-strength steel of the thick plate, which causes great difficulty in bundling the strip steel. Loose rolls may cause accidents

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