Explore our core automation units engineered for seamless stator manufacturing. Tooling and dies are customized strictly according to your electrical steel lamination drawings and dielectric specifications.
Simultaneous single-stroke transfer of phase coils and dielectric slot wedges into stator slots, virtually eliminating wire enamel friction and dielectric failure.
High-torque gear-driven feed structure engineered for rapid slot lamination alignment, optimized for continuous duty cycles in fan and pump motor stator cores.
Multi-pole internal slot flyer winding featuring synchronized four-station indexing, dedicated to brushless servo and compact pump motor applications.
Multi-spindle 3000 RPM high-speed flyer winding for batch electromagnetic coil skeins, ensuring consistent copper turn tension and precise coil grouping.
Hydraulically stabilized interference-fit insertion machine engineered to seat rotor shafts accurately without stressing bearing journals or lamination balance.
Programmed needle indexing and tensioned cord binding for motor stator end windings, providing structural rigidity against high-vibration working conditions.
Continuous twin-fixture winding architecture with rapid tooling turnaround, designed for medium-to-large stack heights and flexible lamination sets.
Induction-hardened, concentricity-ground SC45# steel shafts and precision tooling fingers tailored to custom stator bore diameters and harsh service duties.
A technical treatise on controlling mechanical stresses, slot-fill factors, and dielectric integrity during automatic wedge driving and coil insertion.
In alternating current (AC) induction, permanent magnet synchronous (PMSM), and brushless DC (BLDC) motor manufacturing, the stator core slot constitutes the heart of the electromagnetic circuit. Inserting pre-wound copper or aluminum coil conductors alongside the protective slot wedge (ground insulation cover) is often the most critical point of failure in an automated line. Our Automatic Stator Wedge and Coil Inserting Machines employ a multi-axis coordinated mechanical push-rod mechanism. By driving the wedge guide tooling directly along the inner diameter (ID) of the stator lamination pack, the insulation wedge—whether formed from Nomex, DMD, polyester film (Mylar), or rigid composite vulcanized fiber—is shaped, cut from continuous roll stock, and inserted with micro-metric axial alignment.
During insertion, excessive friction can fracture the ultra-thin enamel coating (polyurethane, polyesterimide, or polyamide-imide) on magnet wires, causing inter-turn shorts or corona breakdown under high-frequency pulse-width modulation (PWM) inverter drives. Our tooling integrates ground carbide guide blades and high-lubricity push fingers that compress the winding bundle evenly as it enters the slot opening. Simultaneously, the wedge acts as a protective boundary, locking conductors below the slot lips without mechanical crimping or shearing forces. The result is an unprecedented slot fill factor of up to 75-80% achieved safely without operator-induced insulation damage.
Kópavogur, functioning as Iceland's second-largest municipality and an expanding commercial-industrial epicentre within the Capital Region (Höfuðborgarsvæðið), displays distinctive manufacturing and electro-mechanical engineering demands. Industrial operations in the surrounding corridors of Smárinn, Kópavogsdalur, and adjacent coastal ports interface deeply with marine engineering, cold-chain refrigeration networks, geothermal fluid extraction, and district heating plants. Electric motors deployed across these Icelandic sectors operate under relentless environmental conditions: extreme moisture saturation, airborne oceanic salinity, hydrogen sulfide (H2S) presence in geothermal bypass streams, and continuous sub-zero vibration shocks.
When Kópavogur-based engineering workshops, equipment retrofitters, and electro-mechanical service providers overhaul or manufacture specialized submersible pump motors, ventilation impellers, and maritime auxiliary generators, conventional slot insulation and loose manual winding techniques fail prematurely. Zunqi’s slot wedge insertion technology delivers the high slot tightness, exact wedge end-extension tolerances (1.5mm to 3.0mm beyond the core face), and uniform dielectric containment required to withstand vacuum pressure impregnation (VPI) resins. Our machines offer local industrial operators the agility to assemble robust, explosion-proof, and corrosion-resistant motors that strictly adhere to IEC and European electrical standards.
Iceland's electrical landscape is globally unique, driven almost entirely by renewable hydro and geothermal energy sources. Consequently, industrial consumers and municipal utilities across Kópavogur and Reykjavik are subject to strict sustainability targets, emphasizing maximum operational efficiency and decarbonized maritime infrastructure. This local green shift is driving high demand for Super Premium (IE4) and Ultra-Premium (IE5) synchronous reluctance and PMSM motors for fish-processing cooling plants, harbour electrification equipment, and municipal water handling.
Building high-efficiency motors demands tighter electromagnetic tolerances: narrower stator tooth openings, thinner silicon steel laminations (0.35mm down to 0.2mm to curb eddy current losses), and significantly increased slot copper densities. Manual wedge insertion is incapable of sustaining the repeatability required for these micro-tolerances. Automated slot wedge inserting machines solve this by utilizing variable-speed servomotors and precision mechanical pushers that precisely feed the wedge into micro-gap lamination designs without buckling brittle silicon teeth. Embracing automated insertion enables local Nordic enterprises to transition seamlessly into manufacturing and servicing advanced variable-frequency motor lines.
Comprehensive technical comparison across our automated stator slot insertion and winding product series.
| Functional Parameter | Automatic Wedge & Coil Inserter | 4-Station Internal Winder | CNC Flyer Coil Winding Machine | Rotor Shaft Hydraulic Press |
|---|---|---|---|---|
| Stator Outer Diameter (Ø OD) | Ø 40 mm – Ø 260 mm | Ø 20 mm – Ø 140 mm | N/A (Coil Skein Formation) | Up to Ø 300 mm (Rotor OD) |
| Stator Lamination Stack Height | 10 mm – 220 mm (Customizable) | 8 mm – 90 mm | N/A (Tooling Form Dependent) | 15 mm – 350 mm |
| Applicable Slot Wedge Material | DMD, NMN, Nomex, Mylar, PET Film | Pre-insulated Slot Liner Cores | Polyester film / Varnished tape | N/A |
| Wedge Thickness Processing | 0.15 mm – 0.50 mm continuous roll | Pre-formed liners (0.12 - 0.35 mm) | N/A | N/A |
| Wire Gauge Compatibility | Ø 0.18 mm – Ø 1.35 mm (Cu / Al) | Ø 0.10 mm – Ø 0.85 mm | Ø 0.10 mm – Ø 1.20 mm | Shaft Diameters: Ø 8 – Ø 60 mm |
| Kinematic Cycle Speed | ≤ 18 – 30 sec / Stator core | Synchronized 4-station index | Up to 3,000 RPM Flyer Speed | Hydraulic Stroke 150-250 mm |
| Control Architecture | Mitsubishi / Siemens PLC + HMI | Programmable Multi-Axis Servo | Microcomputer CNC / Delta Servo | Pressure Feedback PLC Interlock |
| Power Requirement | 380V / 220V ±10% (50/60 Hz 3-Phase) | 220V / 380V Configurable | 220V Single-Phase / 1.5 kW | 380V 3-Phase / 3.0 – 5.5 kW |
With 17 years of specialized export excellence from Dongguan to international precision manufacturing plants, we provide fully verified production lines designed to minimize downtime.
Continuous on-site audited enterprise credentials through international verification agencies. Transparent trade capacity, verified manufacturing workshops, and hundreds of verified client deliveries across global markets.
We do not sell rigid standard molds. Our tooling engineers machine inserting blades, wedge folding dies, and guide magazines directly mapped to your physical lamination samples and winding schemes before shipping.
Control cabinets are wired with tier-1 components compatible with European maintenance standards: Siemens, Mitsubishi, Schneider, Delta, Omron PLCs, and SMC/Airtac pneumatics to make spare parts sourcing straightforward.
One single supplier covers the full process: from slot paper insulation to coil winding, wedge insertion, intermediate forming, lacing, final forming, and precision rotor turning, avoiding vendor-mismatches.
Every ordered machine undergoes extensive functional validation in our factory with your provided stator laminations. High-definition test run videos and inspection certificates are submitted for approval prior to balance and crating.
Equipment is treated with VCI anti-rust oil, wrapped in multi-layer moisture-barrier vacuum film, and secured to skids inside non-fumigation solid plywood sea-worthy crates suited for transit to Reykjavik / Eimskip terminals.
Direct technical and commercial answers regarding machinery acquisition, electrical grid matching, customs clearance, and tooling replacement.
Send your stator core drawings, lamination diameters, slot count, and production capacity targets. Our senior automation engineers provide a complete layout proposal and quotation within 9 hours.
