In HVAC ventilation systems, flexible connectors are crucial components connecting fans, air conditioning units, and ductwork. Their function is to reduce vibration and noise, compensate for displacement, and isolate vibration—without them, equipment vibrations would be transmitted along the ductwork, generating noise and even damaging duct joints.
Traditional flexible connector manufacturing requires manual cutting of metal strips, canvas, punching, and splicing, a cumbersome process with inconsistent quality. BYFO’s CNC flexible connector production line integrates all processes into a single automated line; coil material goes in, and a finished flexible connector comes out.
I. What is a Flexible Connector? Why is a Dedicated Production Line Needed?
Flexible connectors are composed of a metal frame and a fire-resistant canvas/silicon-titanium cloth composite. The metal frame connects to the duct flange, while the flexible fabric layer in the middle absorbs vibration.
The pain points of traditional manual manufacturing:
| Pain points | Instruction |
| Manual cropping | Large dimensional deviations, misalignment of fabric and metal strip |
| Hand punching | Hole position misalignment, the flange cannot be aligned during installation |
| Spliced loosely | The metal and fabric are not firmly bonded and will separate during use |
| Very low efficiency | A skilled worker can only do a few a day |
| High waste rate | Cutting error leads to material scrap |
BYFO CNC flexible connection production line: Uncoiling → Servo feeding → Punching → Forming → Cutting → Recoiling, fully automated, requiring only one operator.
II. Production Line Composition and Workflow
Complete configuration:
| Component | Function |
| Dual electric unwinding machine | Simultaneously release metal strips and fireproof cloth |
| Servo feeding device | Precise control of feed length |
| Hydraulic punching machine | Punching mounting holes (such as M8/M10 bolt holes) |
| Roll forming machine | Rolling and laminating metal strips and fabrics |
| Cutting device | Fixed-length cutting |
| Electric winding machine | Automatic winding of finished products |
| PLC control system | Fully automatic parameter control |
Workflow:
Uncoiling → Servo Feeding & Punching → Roll Forming → Cutting → Coiling
The entire line is controlled by a PLC system. The operator only needs to input the finished product width and length on the touchscreen, and the equipment automatically completes all processes.
III. Core Advantages
1. Metal + Fabric One-Time Composite Forming
The production line can simultaneously process galvanized steel strip and fireproof/silicon titanium cloth, firmly bonding them together during the roll forming process for one-time forming. The metal frame and fabric are tightly bonded, eliminating the loosening issues associated with manual splicing.
2. Punching and Forming Completed Simultaneously
Equipped with a hydraulic punching device, the mounting holes are punched before the metal strip enters the forming process. The holes are precise and burr-free, allowing flange bolts to pass directly through during installation without the need for secondary drilling on-site.
3. Adjustable Width, Adaptable to Multiple Specifications
The width of the finished flexible connection can be adjusted within the range of 180-500mm. Different specifications can be switched simply by adjusting parameters on the touchscreen, without changing the mold.
4. One-person Operation, Efficiency Increased Several Times
Traditional manual production requires 2-3 people, while a CNC production line can complete the entire operation with just one person. Based on an 8-hour shift, daily output can reach hundreds of meters, several times that of manual production.
5. High Material Utilization
Automatic feeding and precise cutting minimize waste. Leftover material from traditional manual cutting can be reduced by more than 50%.
IV. Technical Parameters (Reference)
| Parameter | BYFO flexible connector production line |
| Processing metal strip thickness | 0.3-0.6mm (galvanized sheet)/ 0.3-1.0mm (optional) |
| Metal strip width | 50-110mm |
| Fireproof cloth width | 80-450mm |
| Finished width | 180-600mm |
| Forming speed | 6-8 m/min |
| Punching force | 400KN (40T) |
| Punching frequency | 50 times/minute |
| Control method | PLC + touch screen |
| Main unit power | 3KW |
| Power supply | 380V/50Hz (customizable) |
| Overall dimensions | ≈3.5×2.0×1.5m |
Note: The above parameters are for standard model reference only; the actual configuration shall prevail.
V. Applicable Scenarios
| Application | Instruction |
| Central air conditioning system | Flexible connection between air conditioning unit and air duct |
| Fan coil interface | Vibration-damping connection between the equipment’s air outlet and the duct |
| Smoke exhaust system | Fire-resistant flexible connections that meet fire safety regulations |
| Industrial ventilation | Dust removal system and exhaust gas treatment equipment interface |
| Cleanroom | Flexible connection of cleanroom air conditioning system |
VI. Why do overseas customers choose BYFO?
• Complete production line delivery, simple installation: The production line is pre-commissioned and tested before leaving the factory. Upon arrival at the customer’s site, only the power and air supply need to be connected for production.
• Remote technical support: We provide instruction manuals in both Chinese and English, along with operation videos. Engineers provide video guidance for installation, commissioning, and operation training.
• Customizable voltage: 380V/50Hz, 220V/60Hz, and 415V/50Hz are all compatible.
• Global shipping of spare parts: We keep stock of easily damaged parts such as punching dies and cutting blades. Fast shipping via DHL/FedEx.
• Warranty service: 24-month warranty on the entire unit (critical components). Free replacement for non-human-caused damage within the warranty period.
VII. Summary
Flexible connections are an indispensable component in HVAC systems, but the efficiency and quality bottlenecks of manual manufacturing have long plagued many ductwork manufacturers. BYFO’s CNC flexible connector production line automates unwinding, punching, rolling, cutting, and rewinding, helping you:
• Increase efficiency: One operator can produce hundreds of meters per day
• Ensure quality: Precise hole positioning, strong bonding, and consistent dimensions
• Reduce costs: Reduced labor and waste
• Expand business: Undertake more HVAC engineering projects
Need to select a model based on your finished product specifications? Contact BYFO, provide your common widths and material requirements, and we will recommend a suitable model within 24 hours.
Email byfo@byfomachine.com
WhatsApp (0086)18255536645
