Sheet Metal Slitter Recoiler Machines For Precision Slitting Line

Sheet Metal Slitter Recoiler Machines for Precision Slitting Line

Precision steel slitting line includes uncoiler machine, slitter machine, tensioner and recoiler machine, etc..

• Uncoiler machine: bear steel coil load and uncoil steel strip for slitting.
• Slitter machine: double arbors of wearing circular knives to slit steel strip longitudinally, the motor and gearbox drive the two arbors by universal joints, press-down of upper arbor is adjusted by motor and worm gear & rod. Precision of slitter is very important, the two arbors must be parallel, the knives and spacers must be good precision

The slitter tools include circular knives, steel spacers between knives and cushions to guide slit strips straightly leaving from slitter.

Circular knives materials differ to material of metal strip to slit, steel spacers are made of CK45 in different thicknesses, cushions can be straight wooden bars or rubber rings. to give high precision slitting:  camber +/-0.10mm/m, edge burrs:  ≤0.3mm, straightness: ≤0.8mm/m, slit widths ±0.1mm.

• Recoiler machine: rewind slit strips on recoiler mandrel, it includes press separator, expansion mandrel, drive motor and transmission gearbox,support arm, pusher.

For thin sheet winding, the recoil mandrel is seamless, to protect steel strips inside layers.

The rewound steel strips are neat in layers and edges, the telescope within 0.5mm

Thin sheet slitting machine is high precision high speed slitting 120m/min, 150m/min, 200m/min, each half an hour can slit one coil, plus 

effective mechanism is arranged to shorten idle time, the time of loading, handling and unloading is about 10minutes, each 8 hour can slit 10coils (10coils x 15T = 150T), each day two shifts 300T.

Characters:

1. Coil storing saddle: put coil ready on the saddle, coil car (trolley) can come under the coil and lift it up, which reduces overhead crane working time and avoid steel coil being damaged if crane directly put coil on coil car.
2. Coil loading car: either floor type coil car or pit type, ensure efficient coil loading onto uncoil mandrel.
3. single mandrel uncoiler: hydraulic expansion mandrel proper for 508mm, and can install additional segments or rubber sleeve to uncoiler bigger ID coils. The load on mandrel varies with different dimensions metal coils.
4. coil head traction press arm, peeler shoveling plate: cooperate with each other to open coill head and send into pinch feeder.
5. Pinch feeder and preleveling equipment: in threading send coil head forward to slitter, in automatic mode, synchronous with slitter continuously sending strip into accumulator loop.
6. 1# first accumulator loop in ground: hydraulic flapping plate as bridge to let thin sheet pass over during threading stage, in automatic mode, accumulate steel trip in loop pit to synchronize pinch feeding and slitting speed, with electric eyes on pit walls to feedback.
7. Press rollers and side guide: to horizontally and vertically guide steel strip on center of slitting machine. Manually adjust side guide to steel strip width.
8. Main machine, slitting machine: include a pair of parallel knife shafts, one moveable slitter stand, one fixed slitter stand, screw down mechanism, drive and transmission controlled by DC / AC driver.
9. Edge scrap coiler: wind up edge scrap, winding tension is provided by cycloid motor through friction wheel.
10.  2# accumulator loop pit: the same structure with 1# accumulator pit, to guarantee synchronous speed of slitting and recoiling, the slit strips never ever entangle in the loop.
11. Tension and speed measuring unit: hydraulic wool felt type or roller type tension provision of recoiling, encoding measure line speed before recoiling.
12. Deflector roller and pre separator: before recoiling, separate steel strips in order and guide strips direction to recoil mandrel nipper.
13. Separating overarm and recoiler: either seamless or open segments mandrel, to make sure good recoiling, coiling hump ≤0.5mm, edge difference ±0.10mm.
14. Electric control system: Siemens PLC to control the slitting line working at high speed 200m/min.ü

Parameters:

Layout: