Industrial-grade automatic pre-slitting, marking, and knife pleating machine integrating inline slitting, mechanical indentation, and precision folding. Features a 1000 mm working width, adjustable 10–100 mm pleat heights, and adjustable marking depths. While our Automatic CNC Filter Media Feeding, Folding & Slitting Production Line is optimized for advanced CNC-driven panel filter assembly, this integrated system offers a highly synchronized mechanical alternative for mass-producing engine and industrial air filters.
This high-performance Automatic Pre-Slitting, Marking & Knife Pleating Machine is an advanced, fully integrated manufacturing system engineered for the continuous production of heavy-duty truck air filters, automotive engine filters, and industrial pleated cartridges. It seamlessly combines automated raw material uncoiling, high-precision circular pre-slitting, mechanical creasing (marking), and reciprocating knife folding (pleating) into a single, highly efficient station.
By synchronizing the paper tension, slitting blades, indentation rollers, and reciprocating folding knives under a centralized PLC system, this machinery eliminates the need for separate slitting and marking processes. It guarantees perfectly straight pleats, razor-sharp fold lines, and clean, burr-free edges, making it the premier choice for filter factories aiming for high-throughput 24/7 automated manufacturing.
Technical Specifications
To ensure exact mechanical alignment with your industrial air filter assembly line, the factual technical parameters are detailed below:
10 – 100 mm (Mechanically or digitally adjustable)
Slitting Blade Assembly
4 sets of adjustable circular slitting blades
Marking Depth Control
Manual or pneumatic micro-adjustment
Production Speed
15 – 35 meters / minute (Variable speed control)
Control System
PLC + Touchscreen HMI
Working Air Pressure
0.6 MPa
Total Electrical Power
10 kW
Power Supply
380V / 50Hz (Customizable to local industrial grids)
Line Dimensions
Approx. 4000 x 1800 x 1600 mm (L x W x H)
Line Net Weight
Approx. 1800 kg
Origin
China
Key Features & Mechanical Advantages
1. Integrated Pre-Slitting & Marking Mechanics
The machine combines active roll uncoiling, multi-blade circular slitting, mechanical marking (creasing), and knife folding into a single, continuous, and highly synchronized station. This eliminates separate cutting and marking steps, optimizing factory throughput and floor space.
2. Precision Creasing & Mechanical Marking
Features an adjustable marking knife roller that presses clean, uniform indentations (creases) into the moving filter paper. This pre-marked path ensures that the downstream folding knives can fold the paper with 100% accuracy, creating razor-sharp pleat edges without paper deformation.
3. Adjustable Width Slitting System
Equipped with high-hardness circular slitting blades that can be adjusted horizontally along the guide rail, allowing operators to split the wide filter media roll into multiple narrower lanes before it enters the marking and pleating sections.
4. Stable Tension & Speed Control
Managed by a centralized PLC system with an intuitive touchscreen HMI. It automatically synchronizes the feeding tension, slitting speed, marking pressure, and reciprocating knife frequency to prevent paper jams, slippage, or fiber tearing under high speeds.
Applications & Industrial Uses
This automated pre-slitting, marking, and folding line is the ideal solution for workshops manufacturing:
Automotive Engine Filters: Continuous folding of heavy-duty cellulose paper elements designed for passenger cars and SUVs.
Truck and Heavy-Duty Air Filters: Producing dense, high-pleat-height paper elements designed for commercial vehicles and tractors.
Industrial Dust Extraction Cartridges: High-throughput folding of chemical-resistant polyester media for industrial exhaust systems.
Why Partner with Fupei?
Strict Pre-Shipment Quality Inspections: Every pre-slitting and folding line is fully assembled and tested with actual filter paper rolls at our factory to verify tension, slitting, and marking stability before dispatch.
Custom Voltage & Grid Compatibility: We configure the internal electrical motors, heating elements, and PLC systems to meet your regional industrial standards (such as 3-Phase 380V/50Hz, 220V/60Hz, or 415V/50Hz) for rapid on-site commissioning.
Global Technical Assistance: We provide a comprehensive 1-year warranty, complete electrical and pneumatic schematics, and permanent remote video troubleshooting support to ensure your workshop maintains continuous production.
Frequently Asked Questions
A: Thick or heavy-duty filter paper can fold unevenly when processed directly by reciprocating knives. The pre-marking roller creates precise, shallow indentations in the paper fibers, forcing the folding knives to bend the media exactly along the marked paths. This ensures razor-sharp, uniform pleat heights and prevents paper buckling.
A: Yes, the pleating height is adjustable within the 10 to 100 mm range. To achieve major pleat height adjustments, the reciprocating knife stroke can be mechanically calibrated, and the corresponding marking roller can be swapped on the front assembly to support diverse filter specifications.
A: We configure and test every machine meticulously. Please contact our sales team with your target delivery port and regional voltage specifications, and we will provide a detailed shipping schedule, wooden crate packaging details, and a formal B2B quotation.
