At present, thin steel coil processing lines mainly adopt three types of cutting configurations: slitting, cross-cutting, and combined slitting & cross-cutting lines. Adjustment of the strip width is generally performed manually using circular slitting knives, with the loosening, positioning, adjustment, and locking of the knives all requiring manual operation. This makes automated production difficult and results in issues such as low efficiency and insufficient dimensional accuracy.
For fixed-length cutting, conventional systems generally use a long transverse cutting knife to cut the steel strips simultaneously. As a result, it is not possible to cut each individual strip to a different, freely specified length.
The JFQ125 Automatic Steel Plate Slitting Machine, newly developed by Zhejiang Jinggong Intelligent Building Material Machinery Co., Ltd., is a thin steel plate slitting system designed for zero-waste material utilization. The machine mainly consists of a powered uncoiler, guiding system, protective film laminating unit, powered leveling unit, pinch roll unit, multiple slitting knife assemblies equipped with dedicated preloaded anti-reverse bearing systems, automatic knife positioning system, automatic cross-cutting system, pneumatic system, and zero-waste feeding control system.
The equipment can efficiently and accurately perform uncoiling, guiding, film laminating, leveling, slitting, fixed-length cutting, and automatic knife positioning of steel plates.
As a key piece of equipment in the field of metal sheet processing, the Automatic Steel Plate Slitting Machine and Coil Storage System can help users in China and overseas improve the level of automation and intelligent manufacturing in steel plate slitting operations, supporting more intelligent and efficient production in the context of manufacturing transformation, upgrading, and digitalization.
No. | Item | Specification | Qty. | Supplied | Remarks |
1. | Steel Plate Slitting Machine | JFQ125 | 1 set | Standard | |
1.1. | Slitting Knife Shaft Assembly | 5 knife groups | 1 set | Standard | |
1.2. | Cross-Cutting Knife Assembly | 1 knife group | 1 set | Standard | |
1.3. | Knife Positioning System | 1 set | Standard | ||
1.4. | Leveling Unit | 7-roll powered leveling | 1 set | Standard | |
1.5. | Infeed Guiding System | Single-side reference | 1 set | Standard | |
1.6. | Protective Film Laminating Unit | 1 set | Standard | ||
1.7. | Pinch Roll Unit | 1 set | Standard | ||
1.8. | Pneumatic System | 1 set | Standard | ||
1.9. | Control System | 1 set | Standard | ||
2. | Uncoiler | 5TPowered Uncoiler | 1 set | YES¨NOþ | Optional |
Item | Technical Parameter |
Number of Knife Assemblies | 5 pairs for longitudinal slitting + 1 set for cross-cutting |
Steel Plate Width | 500–1250 mm |
Minimum Strip Width | 75 mm |
Slitting Speed | ≤25 m/min |
Leveling Rolls | 7-roll powered leveling, independently adjustable |
Protective Film Laminating | Passive constant-tension laminating |
Control Software | Developed by Jinggong |
Touch Screen Size | 10 inches |
Installed Power | 16.5 kW |
Equipment Weight | Approx. 7 tons |
Overall Dimensions (L × W × H) | 3000 × 3000 × 1750 mm (excluding uncoiler) |
Thickness Range(mm) | ||||
Copper | Steel 400 MPa | Stainless Steel MAX 550 MPa | Aluminum AIMg3 (5754) | Zinc |
0.5-2 | 0.4-1.5 | 0.4-1 | 0.5-2 | 0.5-2 |

The standard configuration includes 5 sets of longitudinal slitting knife assemblies, with the option to upgrade to 8 sets.
The overlap and clearance between the upper and lower slitting knives of all longitudinal slitting knife assemblies can be synchronously and automatically adjusted through the servo system, enabling quick and precise setup.
The longitudinal slitting knives can be preset to the required dimensions through the touch screen. The automatic knife positioning system enables fast automatic adjustment, making the equipment particularly suitable for batch production with multiple plate-width specifications.
The cross-cutting system adopts a single cutting knife assembly combined with a long cutting knife. Driven by the servo system, it can independently cut individual steel strips on the left, middle, right, or other designated positions.
The equipment supports a zero-waste production mode. When processing the final sheet of a slitting sequence, the longitudinal slitting knives are disengaged from the cutting position in advance. After the sheet is cross-cut flush, the material is automatically retracted. Once the knife configuration has been adjusted, the equipment resumes sheet feeding and starts slitting the next specified sheet size.
A fully automatic safety protection system is provided. The output torque of each servo motor is monitored in real time. In the event of an abnormal or sudden change in torque, the equipment will automatically issue an alarm and stop for protection. Operation can resume after manual inspection, troubleshooting, and confirmation.
The equipment adopts a 7-roll leveling system. The three upper leveling rolls can each be independently and rapidly adjusted through the servo system to adapt to steel plates with different levels of flatness.
The equipment is standard-equipped with a protective film laminating unit, enabling automatic film application to the steel plate. The output tension of the laminating roll is adjustable.
A precision guiding and centering system is provided and driven by a servo system. One side of the sheet is used as the reference edge, while the motor-driven servo mechanism applies pressure to the opposite edge, ensuring that the sheet travels through the machine parallel and stably, preventing material deviation.
1.The equipment color may be specified by the Purchaser when signing the contract. Unless otherwise specified, the equipment will be manufactured using the standard Jinggong color scheme.
Main Body RAL7031Blue Grey | Safety Guards RAL7035Light Grey | Electrical Control Cabinet RAL7035Light Grey |
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Note: The equipment color may be specified by the Purchaser at the time of contract signing. The standard Jinggong color scheme will be adopted if no special requirements are specified.
2.During equipment delivery and installation, the Purchaser's workshop shall be equipped with one 10-ton overhead crane or mobile crane.
3.Before the equipment arrives on site, the Purchaser shall arrange the following near the equipment:
One power distribution cabinet, equipped with one 63 A circuit breaker.
One compressed-air supply point, with a pressure of ≥0.6 MPa.
4.The main incoming power cable (YCW 3×6 + 1×4 mm²) shall be provided by the Purchaser. The required cable length shall be determined according to the actual site conditions.
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