Sipu Four-Way Valve Coil Automatic Production Line — Full Process from Winding to Testing
The four-way reversing valve is a core electromagnetic component in air conditioning, heat pump, and refrigeration HVAC systems. Its matching coil demands extreme precision in winding, resistance consistency, welding reliability, and service life.
6 Challenges in Traditional Four-Way Valve Coil Manufacturing
1. Fine magnet wire breaks or overlaps due to unstable tension during winding
2. High precision required for bobbin terminal insertion — manual operation causes offset and low yield
3. Unstable spot welding and resistance welding lead to cold solder joints and hidden failures
4. Manual resistor assembly and lead cutting result in poor consistency
5. Manual visual inspection and resistance testing have high miss rates and labor costs
6. Decentralized processes cause low productivity and unstable quality
Sipu Solution: Fully Automated Integrated Production Line
Sipu's four-way valve coil automatic production line integrates all processes into one seamless system:
Servo Tensioner + Closed-Loop Tension Control :Constant tension throughout winding eliminates wire breakage and overlapping, ensuring stable coil performance and high yield
Full-Process Automation: 11 steps from bobbin loading to automatic product collection
CCD Vision Inspection + Resistance Testing: Full traceability, dramatically reduced miss rateAutomatic Sorting: Products auto-classified by test results, replacing manual sorting
Production Process Flow
- Bobbin terminal insertion
- Automatic bobbin feeding
- High-precision winding (servo tensioner + closed-loop control)
- Automatic spot welding
- Automatic resistor mounting
- Resistor excess lead cutting
- Resistance welding
- CCD visual inspection
- Automatic product sorting
- Coil resistance testing
- Automatic product collecting
Why Sipu?
Founded in 2014, Sipu Mechanical has delivered 200+ custom fully automatic coil production lines globally.
From pre-sales consultation and custom manufacturing to installation, training, and after-sales support
— we stay with you through the entire lifecycle.
Contact Us to get your four-way valve coil production line solution.
Get the latest price? We'll respond as soon as possible(within 12 hours)