SDN-32ZH Low Price Spot Welding Machine
- Welding ModeMicro-gap Inverter
- Electrode FeedPneumatic Servo
- MOQ Requirement1 Set Complete
Motor Automation R&D (Since 1998)
Industrial Plant in Sanmen, Zhejiang
National Patents & ISO9001 Audited
Specialized Motor Assembly Equipment
Engineered for high-volume automotive starters, alternators, power tool armatures, and industrial BLDC motors. Tooling precision, cycle time repeatability, and low thermal impact.
Procuring a rotor assembly line requires balancing takt times, thermal stress during commutator fusion, and multi-station conveyor integration. Modern plants optimize across five key operational disciplines:
Traditional high-speed flyers often introduce wire-stretch variations that lead to unbalanced armatures. Modern systems implement three-axis closed-loop servo tensioning to ensure precise copper layering across varying slot geometries while preventing enamel micro-fracturing at speeds above 3,500 RPM.
Commutator hook welding requires precise energy control to avoid burning copper strands or weakening nearby resin insulation. Contemporary lines utilize 1kHz to 4kHz mid-frequency DC spot welding systems equipped with secondary displacement sensors that track copper collapse in real time.
Automated balance testing feeds correction data directly into dual-station V-cut or axial milling units. The rotor transfers automatically from the testing cradle to the milling station via pneumatic pick-and-place indexing, removing manual operator handling and safeguarding concentricity tolerances.
Replacing large dip-tank ovens, modern trickle varnish dispensing targets the slot openings and end windings directly while rotating pre-heated armatures. Induction coils provide controlled, localized heating that cures resin in minutes rather than hours, reducing volatile organic emissions (VOCs).
Integrated rotor lines require comprehensive automated testing before final assembly. Integrated test stations evaluate inter-turn surge insulation, bar-to-bar resistance balance, weld joint resistance, and high-voltage dielectric breakdown within a single 6-second test nest, tagging non-conforming units automatically.
Modern motor manufacturers balance high volume with frequent SKU transitions across automotive, appliance, and power-tool rotor sizes. Modern assembly lines feature modular nesting pallets, quick-disconnect pneumatic clamps, and digital recipe recall on touchscreens to reduce changeovers from full shifts to under 30 minutes.
Purchasing teams must account for evolving powertrain architectures, rare-earth magnet integration, and automated data logging requirements when specifying new production equipment.
Automotive starters and starter-generators (ISGs) increasingly transition from traditional round enameled copper wire to rectangular cross-section flat wire. Sourcing specifications now emphasize automated CNC wire bending, insertion tooling, and automated paper insulation inserting capable of handling thick rectangular cross-sections without tearing slot liners.
As Brushless DC (BLDC) and Permanent Magnet Synchronous Motors (PMSM) replace universal brushed motors, rotor equipment procurement is shifting toward automated magnet handling. Sourcing engineers specify cleanroom-compatible magnet stack feeds, adhesive dispensing stations, automated heat-activation curing, and post-assembly pulse magnetizing.
Global Tier-1 motor contracts require end-to-end station tracking. Procurement checklists prioritize PLCs equipped with native OPC-UA or MQTT protocols that feed real-time press forces, welding energy curves, winding tensions, and dynamic balance values directly into plant MES platforms for zero-defect compliance.
Headquartered in the Shatianyang Development Zone of Sanmen, Taizhou, Zhejiang Rilvo Automation Equipment Co., Ltd. combines heavy in-house manufacturing capabilities with a dedicated engineering R&D team.
Led by our President and Chief Engineer—honored as a Model Knowledge-Worker by the All-China Federation of Trade Unions—our team integrates custom mechanical, electrical, and pneumatic design in-house.
With 20,000 m² of completed workshop floor space, an additional 30,000 m² under construction, and over 150 metal-cutting and machining units on-site, we fabricate precision tooling in-house rather than relying on external machine shops.
Officially recognized as a High and New Technology Enterprise of Zhejiang Province, holding 17 national invention and utility patents, our processes adhere to ISO9001 standards from incoming QC to run-off trials.
Located roughly two hours from Ningbo Port, we support FOB, CFR, CIF, and EXW terms across Eastern Asia, Southeast Asia, South America, Eastern Europe, and the Middle East with comprehensive on-site sample validation before shipment.
Factory Direct
Whether you require a single semi-automatic winder or a complete, interconnected starter armature manufacturing line, Rilvo delivers turnkey manufacturing solutions. Our 36-member engineering department customizes tooling fixtures directly to your 2D/3D lamination prints, wire gauges, and output targets.
Practical answers to the common technical and commercial questions procurement managers and motor plant directors evaluate during supplier qualification.
Every order begins with your CAD drawings (DWG/DXF/STEP) specifying stack length, slot dimensions, and shaft diameters. Tooling and winding jaws are CNC-machined in our internal toolroom. Before dispatch, we request physical bare core samples to perform full trial runs under production speeds, verifying wire lay, slot fill, and insulation integrity on high-definition video acceptance records.
Standard standalone equipment (such as the ZB-302 rotor winder or SDN-32ZH welder) typically ships within 25 to 40 days following drawing approval. A turnkey, integrated automatic rotor line with connecting transfer conveyors, automated hot-staking, balancing, and testing stations typically requires 75 to 110 days, including factory acceptance testing (FAT) at our Sanmen facility.
Depending on your armature specifications, we offer both pneumatic-driven and servo-driven spot welding machines with mid-frequency inverter DC power supplies. Mid-frequency DC offers stable thermal penetration, reduces electrode wear, and minimizes spatter compared to older AC transformers, protecting nearby commutator riser resin from thermal breakdown.
Yes. Our electrical control architectures rely on industrial-grade PLCs and HMI touchscreens. We provide Ethernet-based communication protocols (including Modbus TCP, Profinet, and OPC-UA) to transmit machine cycle times, weld energy logs, winding cycle counts, fault alarms, and dynamic unbalance data to your plant data collectors.
Each unit ships with complete English operational manuals, wiring diagrams, and a recommended spare-parts kit (including spare winding nozzles, indexing belts, and contact tips). We provide remote video-assisted setup and calibration support. For complete assembly lines, our field service engineers are available for on-site commissioning and operator training.
We work with international industrial clients under FOB (typically via Ningbo or Shanghai), CFR, CIF, and EXW terms. Payments are processed in USD or EUR via Wire Transfer (T/T). Each machine is securely packed in vacuum-sealed moisture barrier film inside heavy-duty, fumigated wooden export crates designed for ocean freight transit.
Send your motor drawing, lamination dimensions, target cycle time, and production volume goals to our engineering team. We will prepare an equipment layout, tooling evaluation, and formal commercial proposal within 24 hours.