"Cut To Length Line refers to a production line that cuts cold-rolled coils into several pieces of steel plates according to specified sizes after being flattened in a cold-processed state, and then packs them into stacks. With the rapid development of the global logistics and distribution industry, customers mainly in the automotive, home appliance, shipbuilding, and container industries have increasingly higher requirements for personalized services in steel plant sales. Shearing and reasonable cutting and matching of plates have become the main sales model for steel plants and large distributors. The demand for metal coil processing equipment, mainly Cut To Length Line and Steel Coil Slitting Machine, is increasing. KINGREAL SLITTING will explain the advantages and characteristics of the Cut To Length Line production line in metal processing technology and explore more profound technologies."
How To Operate Coil Cut To Length Line?
1/Loading Trolley For Cut To Length Line
The coil transport trolley transports the aluminum coil from the storage position to the uncoiling position, and adjusts the height of the aluminum coil through the hydraulic lifting arm to ensure that it is aligned with the axis of the uncoiling machine drum. The trolley is equipped with a laser distance measurement or encoder positioning system, and the accuracy must be controlled within ±5mm.
The expansion and contraction drum of the uncoiling machine drives the pull rod through the rotating cylinder to expand the fan-shaped plate radially (the expansion range is usually φ450–φ510mm), lock the inner hole of the aluminum coil, and the displacement sensor detects the edge position of the aluminum coil in real time, and feeds back to the PLC control system to adjust the center line of the aluminum coil to coincide with the center line of the production line.
2/Decoiler Fot Coil Cut To Length
The hydraulic cylinder for lifting the guide plate at the beginning lifts the guide plate to a position flush with the tangent line of the outer ring of the aluminum coil to avoid scratching the surface of the aluminum plate. The hydraulic cylinder for extending and retracting the guide plate is pushed out to make the front end of the guide plate close to the aluminum coil belt head and guide the belt head into the pinch roller area. The variable frequency motor drives the roll to rotate through the gear box, and cooperates with the bite force of the pinch roller to pull the aluminum plate out at a uniform speed.
3/Straighter For Coil Cutting Machine
The pinch roller uses a servo hydraulic cylinder to control the roller gap, and switches to pressure control mode after biting the steel to ensure that the feeding is not slipping. The multi-roller straightening machine (commonly 9-23 rollers) applies repeated bending stress through the staggered upper/lower roller groups to eliminate the internal stress of the aluminum coil. The roller gap is automatically set by the CNC system according to the plate thickness and material, and the straightening accuracy is ≤1mm/m
4/Cut To Length
The upper knife shaft (active) of the Cut To Length Machine drives the Cr12MoV alloy blade (hardness HRC58-62), and the lower knife shaft supports it; the hydraulic pressing device prevents the material from deflecting, and the arc-shaped upper blade rolls and shears along the horizontal base surface, and the cut is flat and without steps. The Cut To Length Machine servo motor encoder (speed feedback) + length measuring wheel encoder (position feedback) eliminates slip errors.
5/Auto Stack For Coil Cut To Length
The pneumatic baffle or magnetic spreader separates the aluminum sheets piece by piece, and the hydraulic lifting platform of the stacker descends according to the set number of layers (paper is placed between layers to prevent scratching). The stacking alignment accuracy is ±2mm, and the maximum load is 10 tons. After the stacking is completed, the hydraulic lifting mechanism of the stacker lifts the material stack, moves out of the production line along the track, and is transported to the storage area by a crane or AGV.
What Is Benefits Of Cut to Length Lines In Metal Processing?
1/High dimensional accuracy. Coil Cut To Length Line cuts steel in a cold state, and the cross-cut product has a sizing accuracy of ±0.3mm, which can be accurately processed according to customer requirements.
2/Eliminate internal stress in steel. Coil Cut To Length Machine mechanically flattens steel in a cold-rolled state, which can greatly eliminate internal stress in the coil. The stress elimination is generally 60%-80%, and the elimination of internal stress greatly improves the various mechanical properties of the steel plate.
3/Maximize steel utilization. Steel is accurately cut and sized according to customer requirements. The size after sizing is basically tailored according to the final specifications of the metal product. In the next processing procedure, the head, tail, and scraps generated are greatly reduced, thereby greatly improving the utilization of steel. The yield rate of Coil Cut To Length Machine can reach 98%.
4/The yield rate of rolling is increased. If the coil is found to have defects during the rolling process of the cold-rolled steel mill, it is usually judged as waste or inferior plate. The cold-rolled coil is flattened through the Coil Cut To Length Line, and the defective part is cut off after flattening. The remaining part can still be sold as qualified finished plate, thus greatly improving the rolling yield of the cold-rolled steel mill.
Regarding the selection of Coil cut to length machine, KINGREAL SLITTING recommends choosing a coil cutting machine of appropriate specifications according to the type, thickness and size of the material to be processed, and choosing the appropriate equipment specifications considering the production line's capacity and efficiency requirements while choosing a reliable equipment manufacturer or brand. For example, KINGREAL SLITTING is a professional coil processing equipment manufacturer, and insists on providing customers with good quality and after-sales service for coil cut to length line products, which can ensure the stability and continuous production capacity of the cut to length machine.
