Author: Site Editor Publish Time: 2025-01-16 Origin: Site
Slitting And Cutting Composite Line is suitable for uncoiling, slitting, rewinding + leveling, fixed-length transverse cutting and stacking and unloading of cold-rolled and galvanized sheets with a thickness of 0.5-4.0mm and a width of less than 1500. It has a compact structure, is easy to operate and maintain, and is economical and practical.
Process flow: loading trolley → cantilever uncoiler (with auxiliary support arm device, power pressing device) → traction clamping and 3-roller rough correction (with shovel head-straight head device) → hydraulic swing bridge and buffer storage pit → deviation correction device → longitudinal shearing (slitting) → double-sided waste edge strip winding device → hydraulic swing bridge and buffer storage pit → pre-splitting damping pressing device (with pneumatic swing belt threading support device) → winder → hydraulic unloading trolley → deviation correction device → leveling, fixed-length feeding (with film device) → hydraulic cutting machine → conveyor belt (6m) → automatic stacking and discharging device (6m) supporting hydraulic and pneumatic systems, electrical control systems.
Flow chart
1. Loading trolley Cantilever uncoiler
Hydraulic lifting, load-bearing ≤15t, driven by cycloid pinwheel reducer, mechanical travel.
Cantilever uncoiler (with hydraulic auxiliary support arm and power pressure guide device)
Cantilever hydraulic core expansion type, load 15t; coil inner diameter ¢508--610mm (no need to add 508/610 conversion sleeve when 610mm); maximum outer diameter of coil ¢1600mm, power (inching) unwinding (rewinding), reducer chain drive. After the production of the belt threading line, the material is discharged passively.
2. Pinch and 3-roller rough calibration and Hydraulic swing bridge and buffer storage pit
The sheet metal enters the rear equipment through the swing bridge, and swings downward after connecting to the production line.
3. Longitudinal shear (slitting) main machine
The longitudinal shear part consists of transmission, frame, knife shaft, disc knife, blade spacer, rubber ring (retracting ring), etc. The upper and lower knife shafts are made of 40cr material and adopt the process of heat treatment medium frequency quenching + grinding. The width size of the workpiece of longitudinal shearing and slitting and the gap between the upper and lower blades are adjusted and controlled by the arrangement and locking of the blade and blade spacer (knife pad) on the knife shaft. When changing the knife, one side of the knife shaft supports the frame to move out of the frame. The center distance of the upper and lower knife shafts can be adjusted, and the blade is sharpened on the outer diameter surface.
The motor power is 45kw, and frequency conversion control is adopted.
4. Waste wire winding device and Hydraulic swing bridge and buffer storage pit
5. Pre-splitting damping pressing device (with pneumatic swinging belt feeding support device)
It consists of a frame, pre-splitting shaft, damping part, lifting and pressing mechanism, pressing mechanism, and stripping shaft, etc.
6. Winder (simple type)
Separate the longitudinally cut steel strip and wind it into coils. The reel is a cantilever expansion and contraction type, consisting of a main shaft, a wedge-shaped slider, a pull rod, an arc plate, etc.; it has a simple manual jaw to tighten the material head; the reel is driven by an AC motor to rotate, and hydraulically driven radial expansion and contraction. A hydraulic cantilever coil separation pressure arm is installed above the reel, which can automatically rise as the steel coil increases, collect the material coil and always press the steel coil.
7. Hydraulic unloading trolley
Similar to the loading trolley of the uncoiler.
8.Dual 11-roller leveling and fixed-length feeding (with film laminating device)
It consists of a welded machine base, a gantry frame, 2 pinch rollers, 11 leveling rollers, upper and lower roller seats, a crossbeam, and an upper roller lifting and pressing device. The pinch lower roller is made of 42CrMo, quenched and tempered + medium frequency quenched + hard chrome plated, and the pinch upper roller is polyurethane coated; the leveling roller is made of 42CrMo, quenched and tempered + medium frequency quenched + hard chrome plated, and the upper roller is electrically adjustable.
With front (single-sided) simple film laminating device.
11 leveling rollers (5 on top and 6 on bottom), diameter Φ110mm, 42CrMo tempered, surface medium frequency quenched, surface chrome-plated
The lower roller is a power roller, and the upper roller is a non-powered driven roller
Each upper and lower roller has a set of simple supporting rollers.
1 pair of fixed-length feeding rollers, diameter Φ150mm
The lower roller is 42CrMo tempered, surface medium frequency quenched, and surface chrome-plated
The upper roller is polyurethane-coated
AC motor 0.75KW*2 sets, the leveling roller pressure adjustment.
The main motor is 22KW, using servo control to achieve leveling and fast and accurate length feeding.
9.Shearing machine
Equipped with hydraulic 4*1600 shearing machine.
10. Automatic stacking and unloading device (6m)
Stack the cut finished plates into neat stacks. Realize the overall blanking of steel plates to avoid scratches when stacking steel plates. The steel plates are transported to the blanking rack via the conveyor belt, and the opening and closing of the pneumatic blanking rack is controlled by the electrical switch to realize the overall falling of the plates and push them into alignment.
It consists of a frame, a rear baffle (electric), a side baffle (electric), a side clapper (pneumatic), a rear clapper (pneumatic), a hydraulic lifting receiving table, a flip-plate (pneumatic) blanking device, a discharging trolley (1 side discharge) and detection components.
11. Hydraulic system
4KW motor, 10L plunger pump, maximum pressure 25MP, actual pressure ≤10MP, pipeline design uses high-pressure hose and seamless steel pipe. The main hydraulic cylinder uses imported seals.
12. Pneumatic system
It consists of air source processing triplex, solenoid reversing valve, pipeline and cylinder.
Note: The air source is provided by the user
13. Electrical system
The whole line adopts centralized control, and the whole line is controlled by touch screen, PLC, AC frequency conversion and servo. The cutting length and number of cutting blocks of the plate can be set through the operation interface for synchronous control. The control has manual and automatic working modes. In the automatic mode, the whole leveling and cutting process is controlled by the computer. The error compensation function is designed in the control software.