Engineered to integrate smoothly into automated lines for fractional horsepower (FHP) to medium-frame induction motors, meeting ABNT NBR and international IEC dimensional standards.
Overcoming copper strand displacement, excessive coil end-turn height, and insulation breakdown in high-duty electric motor manufacturing through synchronized upper and lower CNC binding.
In conventional single-end lacing, asymmetrical axial compression distorts the stator overhang, shifting the magnetic center and generating electromagnetic vibration. Double-side lacing machines deploy dual servomotors actuating upper and lower needles synchronously. High-speed hooked needles penetrate slot clearances down to 1.8mm without nicking wire enamel, securing both coil overhangs in a single clamp cycle.
Tension variations in polyester or Nomex lacing cord can crush slot cell margins or leave loose loops that vibrate under pulse-width modulation (PWM) inverter harmonics. Our system applies an electromechanical magnetic particle brake regulated by real-time load sensors. Tension is dynamically maintained within ±0.5 N across slot-by-slot, skip-slot, and complex cross-over strapping patterns.
Utilizing high-precision globoidal indexing cams matched to high-response absolute servo encoders, our lacing tooling indexes stators through 8, 16, 24, 36, or 48 slots at speeds exceeding 220 stitches per minute. Mechanical linkages are nitrided and lubricated via positive-displacement centralized manifolds, preserving micrometer repeatability over millions of production cycles.
In high-vibration and humid industrial environments, loose end-turns allow relative wire motion under peak starting torque. This abrasive friction causes turn-to-turn micro-fretting of the enamel coating, followed by phase insulation breakdown. By binding phase separators firmly against the copper bundles with uniform double-side lacing, the stator assembly achieves exceptional mechanical rigidity, lowering partial discharge risk and preventing corona breakdown when driven by Variable Frequency Drives (VFDs).
| Functional Parameter | Manual / Semi-Auto Binding | Single-End Auto Lacing | Double-Side CNC Servo Lacing |
|---|---|---|---|
| Cycle Time (24-Slot Stator) | 120 – 180 seconds | 28 – 38 seconds (two flips) | 11 – 15 seconds (simultaneous) |
| Tension Uniformity | Variable (Operator dependent) | Moderate (Spring mechanical) | Constant Closed-Loop Servo (±0.5 N) |
| End-Turn Squeeze Symmetry | Poor (Significant ovality) | Asymmetrical (One side bias) | Balanced Dual-Axial Compression |
| Wire Coating Abrasion Risk | High (Manual tool rubbing) | Low to Moderate | Zero (Sensor-guided needle alignment) |
| Tooling Changeover Duration | None (Manual labor) | 35 – 50 minutes | 12 – 18 minutes (Quick-lock modular nests) |
| VFD Inverter Grade Compliance | Unpredictable Partial Discharge | Acceptable for Standard Duty | Meets IEC 60034-18-41 Stress Standards |
Customized machine configurations meeting the rugged environmental and duty-cycle demands of Rio de Janeiro's maritime, petrochemical, infrastructure, and consumer manufacturing basins.
The offshore supply chain in Macaé and Porto do Açu requires electric motors that withstand heavy vibration and highly corrosive saline fog. Submersible pump stators and auxiliary cooling fans wound and laced with our equipment undergo double-end compacting to prevent windage vibration. Tooling accommodates heavy insulation papers (Nomex/DMD) and heavy-gauge wire bundles used in IEEE 841 severe-duty motors.
Heavy processing machinery operating around REDUC refinery (Duque de Caxias) and CSN steelworks in Volta Redonda relies on continuous-duty conveyor drives, gear motors, and industrial ventilating units. Our automated lacing machines ensure rigid winding overhangs that endure frequent line starts and heavy voltage swings common to heavy industrial power lines across the Rio-Paraíba valley.
Domestic fans, split-system air conditioning compressors, and commercial refrigeration motors manufactured in industrial districts like Santa Cruz and Queimados require high volume throughput. Our 8-station coil winders and high-speed double lacing machines deliver fast 12-second cycle times, lowering unit production costs while adhering strictly to Brazilian energy efficiency labels.
How recent efficiency mandates and workplace safety regulations are driving modernization in Rio de Janeiro's motor assembly plants.
Brazil’s Portaria Interministerial mandates premium efficiency levels (equivalent to IE3 and emerging IE4). Achieving these ratings requires packing higher copper slot-fill percentages (often exceeding 78%) into laminations. High slot-fill makes manual winding and lacing impractical without damaging magnet wire insulation. Automated double-side lacing compacts tight coil bundles cleanly without mechanical interference, allowing motor builders in Rio to pass INMETRO efficiency audits easily.
Brazilian workplace safety standards (Norma Regulamentadora NR-12 for machinery safety and NR-10 for electrical installations) require strict protective features on imported industrial gear. Our export machinery can be specified with Category 4 safety light curtains, dual emergency stop monitoring circuits, keyed interlocks, and segregated 24VDC control cabinets, simplifying workplace safety clearance across Brazilian manufacturing facilities.
Operating near Guanabara Bay and Sepetiba Bay means dealing with year-round relative humidity above 80% and airborne marine chlorides. We treat machine bases with heavy epoxy primer undercoats, use hard-chromed guide shafts, and house electronics in IP54-rated sealed cabinets with integrated vortex cooling tubes or anti-condensation heating elements to stop corrosion and tracking faults.
Operating from our dedicated manufacturing base in Qishi Town, Dongguan, Zunqi Intelligent Equipment Co., Ltd. combines in-house machining, software development, and electrical assembly to build rugged, factory-ready stator production systems. Rather than forcing your stator into generic off-the-shelf tooling, we custom-engineer our coil formers, inserting blades, and lacing nests directly to your core drawings.
Answers to key technical, logistical, and import questions for procurement teams and plant managers across Rio de Janeiro.
Send our engineering team your stator technical drawings, core lamination stack heights, target cycle times, and wire specifications. We will review your requirements and provide a detailed proposal and machine configuration within 9 hours.