Full-Auto High Speed Cnc Knife Paper Pleating Machine

Pulan's Full-Auto High Speed CNC Knife Paper Pleating Machine is a knife-type pleating machine specially designed for paper filter elements used in filtration and purification applications. The machine consists of a pre-slitting unit and a pleating unit. With servo drive technology, the fold height can be continuously adjusted from 4~100mm. The folding knife angle can be adjusted flexibly to support M-shaped, W-shaped, and irregular pleat patterns. It is equipped with imported slitting blades, heating shaping system, and dot counting function.

What is Full-Auto High Speed CNC Knife Paper Pleating Machine?

Full-Auto High Speed CNC Knife Paper Pleating Machine is an automatic pleating machine that uses upper and lower folding knives to alternately move and overlap, where the knife overlap height determines the fold height. The machine consists of a pre-slitting unit (imported slitting blades + variable frequency paper feeding) and a pleating unit (servo knife folding + heating shaping + dot counting).
It is widely used for high-volume production of paper filter elements for automotive filters, air filters, and purification filters, providing accurate pleat dimensions and stable pleating quality.

Machine Application and Structure

Application:

Pleating processing of paper filter elements for filters and air purification equipment.

Main Components:

Pre-slitting unit: Feeding rack, imported slitting blades, variable frequency paper feeding system, pneumatic slitting pressure adjustment
Pleating unit: Servo-driven folding knife mechanism, upper and lower heating plates (ambient~220℃), dot counting device, touch screen control system
Auxiliary system: Pneumatic components, emergency stop system, safety guard interlock

Working Principle and Production Process

Working Principle:

The servo motor drives the upper and lower folding knives to move alternately. The overlap height between the two knives determines the fold height. After the filter media is pre-slitted to the required width, it enters the pleating unit for folding, followed by heat pressing and shaping through the heating plates. At the same time, the dot marking system automatically marks according to the preset pleat quantity.

Production Process:

Material Feeding:
Install the roll filter media onto the feeding rack.
Pre-slitting:
Adjust the guide rail, paper feeding roller gap, slitting blade spacing, and cutting pressure according to production requirements.
Embossing (Optional):
The printer unit creates folding lines on the filter media, where the embossing pitch equals the fold height.
Pleating:
Set the fold height and pleat mode (M/W/irregular pattern) through the touch screen. The servo folding knives automatically adjust and fold the filter media.
Dot Counting:
The system automatically marks the preset number of pleats for later cutting and separation.
Heating Shaping:
Upper and lower heating plates apply heat and pressure to stabilize the folded filter media.
Output:
The finished pleated filter element is discharged from the rear platform.

Core Features

1. Knife-type pleating with stepless fold height adjustment
The fold height can be freely adjusted from 4~100mm. The servo system automatically adjusts the folding position without replacing mechanical parts.
2. Supports irregular pleat patterns
The machine can produce M-type, W-type, and various irregular fold height patterns through touch screen settings.
3. Flexible folding knife angle adjustment
The folding knife angle can be adjusted according to different filter media characteristics, reducing material damage during processing.
4. Imported slitting blades
High-quality slitting knives ensure smooth cutting edges without burrs. The minimum slitting width can reach 45mm.
5. Heating shaping system (ambient~220℃)
The heating plates stabilize the pleat structure after folding, preventing rebound and deformation.
6. Automatic dot counting function
The system marks according to the preset pleat quantity, making subsequent cutting and separation easier.
7. Large fold height processing capability
When the fold height exceeds 35mm, the cam slide rollers need to be replaced to increase the knife exchange curve and ensure stable folding.
8. Touch screen with Chinese and English interface
The control system supports M/W/irregular mode selection, parameter setting, and recipe storage.

Technical parameters

Installation Notes

Install the Full-Auto High Speed Cnc Knife Paper Pleating Machine on a flat surface with more than 1m clearance on both sides and more than 1.5m clearance at the front and rear.
Keep 0.8~1.2m distance between the pre-slitting unit and pleating machine, aligned on the same center line.
Use a forklift above 1 ton for transportation.
Connect to 380V/50Hz power supply with independent grounding.
Air supply pressure: 0.6MPa.
Check cables, emergency stop button, and safety guard door before operation (the machine cannot start when the door is open).

FAQ

Q1: What special pleat shapes can this machine produce?
A: It supports M-type, W-type, and various irregular fold height patterns, which can be selected through the touch screen control system.

Q2: What adjustments are required when fold height exceeds 35mm?
A: Replace roller B on the cam slide plate (two pieces on each side, four pieces in total) to increase the knife exchange curve, and reduce the folding speed to prevent paper breakage.

Q3: How to adjust uneven pleat end surfaces?
A: Uneven ends are usually caused by non-parallel upper and lower folding knives. If the end surface shifts left, lower the left knife gap; if it shifts right, lower the right knife gap.

Q4: How are embossing depth and pitch adjusted?
A: Adjust the embossing depth by rotating the fine adjustment handwheels on both sides of the upper embossing knife. The embossing pitch is set through the touch screen stepper motor parameters, where the embossing pitch equals the fold height.

Q5: What should be done if abnormal noise occurs during operation?
A: It is usually caused by insufficient clearance between the knives and heating plates, causing filter media to be squeezed inside the machine. Stop the machine immediately and increase the clearance to avoid knife damage.

Q6: Why should filter media be removed after each working shift?
A: Removing remaining filter media prevents moisture residue after heating from affecting the material passage and heating plates.

Purchasing Information

Factory direct supply, customized solutions available (special fold height, irregular pleats, etc.)
Free sample testing available (send filter paper for trial production)
English and Chinese manuals, electrical diagrams, and pneumatic component lists included
Long-term supply of spare parts (slitting blades, folding knives, heating tubes, etc.)
As a professional Full-Auto High Speed Cnc Knife Paper Pleating Machine exporter, Pulan provides factory direct prices, one-year warranty, and long-term technical support. Contact us for quotation or factory visit.