Single-layer Solenoid Winding
Wound in a single dense layer on a cylindrical bobbin, used for electromagnetic damper actuators (energize to pull in, power off for spring reset). It requires uniform axial magnetic field and stable push-pull force, and the production line must ensure consistent winding pitch.
Multi-layer Stepped Winding
To boost magnetic force without increasing axial length, multi-layer winding is adopted with fewer turns at both ends and more turns in the middle (stepped profile) to optimize magnetic field distribution. The production line must support variable pitch programming to realize stepped winding.
Dual-coil Interlock Winding
Two coils with opposite winding directions are designed in series or parallel, for bi-stable dampers (one energization changes state, and the state is maintained after power-off). The production line must feature dual-winding switching and tap leading functions.
Air-core Self-adhesive Winding (Bobbinless)
Using self-bonding wire to wind into an air-core coil, which is directly assembled into the magnetic circuit, for ultra-compact dampers (such as cooling dampers in micro projectors). The equipment must be equipped with heating bonding and precise demolding functions.
Consistent Actuating Force for Reliable Damper Opening/Closing
The electromagnetic force of damper coils depends on turn count and winding tightness. Automated production lines precisely control turn count and tension, minimizing batch-to-batch pull-in force fluctuation to avoid damper jamming caused by insufficient force.
Precise Low-power Design Implementation
Home appliances are highly sensitive to power consumption. The production line achieves precise resistance control, paired with optimized turn count design, to keep current deviation narrow at rated voltage, ensuring sufficient suction force without excessive heat generation.
High-efficiency Micro Coil Winding
Damper coils are extremely small in size, making manual winding very difficult. Yite's micro production lines are equipped with high-magnification vision systems and micro-tension mechanisms, enabling stable ultra-fine wire winding with daily output fully meeting mass production demands.
With over 20 years of R&D experience in high-precision micro-fine wire automated production lines for miniature electromagnetic actuator coils in home appliances, Eternal's equipment delivers ultra-high winding accuracy and supports extremely small bobbin inner diameter specifications.
The line can integrate automatic adhesive dispensing and resistance/inductance testing to ensure every coil meets actuation requirements. We provide full turnkey automated line solutions covering coil winding, magnet assembly and spring installation. Our equipment has been supplied to multiple refrigerator damper suppliers with proven stable process performance. Timely after-sales response, free coil winding process consultation and prototyping services are fully guaranteed.
