Bar-wound
Bar-wound

 

Bar-Wound Stator Automated Mass Production Line Gen3 - High Compatibility

  • CT = 31.5 s
  • The production line consists of 92 stations in total, with an automation rate exceeding 95%
  • Equipment and material consumption is reduced by 8%
  • Full-automatic precision clamping is adopted for welding processes, achieving a first-pass yield of 99%
  • A multi-channel layout is applied to prevent full-line shutdown caused by failure of individual equipment
  • Quick-change interfaces are equipped; the model changeover time is 35 minutes, reserving flexible options for subsequent retrofitting and enables flexible production
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Technical Features
Insulation Paper Insertion
PIN Forming
Basket Insertion
Expanding
Twisting
Laser Welding
  • CT: ≤ 60 s/pcs (based on 48 slots)
  • Forming dimensional accuracy: ± 0.15 mm
  • The paper insertion length is automatically adjusted according to the core thickness, with an adjustment accuracy of ± 0.15 mm
  • Equipped with forming heating function; temperature control accuracy: ± 3 °C
  • Features automatic unwinding and tension control functions
  • Anti-warping design for inserted paper sheets
  • Equipped with paper debris cleaning function
  • Automatic alarm for paper jamming
Insulation Paper Insertion
  • CT: 1.25–1.5 s/pin
  • Wire feeding length accuracy: ±0.1 mm
  • Adopted innovative 2D/3D forming mode; hardware replacement is not required, and product changeover is realized via software. A single piece of equipment can satisfy the production of all wire types for one stator
  • Integrated multiple processes including straightening, enamel stripping, 2D forming, 3D forming and pre-wiring into one unit
  • Support flexible solution configuration according to customers' capacity requirements to achieve flexible production, with reserved interfaces for subsequent capacity expansion
  • Modular design; molds, milling or laser stripping methods are optional for configuration
  • Non-destructive cutting process is adopted
  • Optional on-line automatic wedge insulation inspection function is available for configuration
PIN Forming
  • CT: ≤ 1.5 s/pin
  • Equipped with wire pattern error-proofing function
  • Effectively prevent wedge deformation
  • Compatible with all types of flyer winding designs
  • Arranges copper wires to avoid misalignment and messy wire terminals, improving basket winding quality
  • The basket winding tooling adopts a flexible design and supports rapid changeover
Basket Insertion
  • CT: ≤ 4.5 s/pin/gripper
  • Equipped with Z-axis compensation function during the flaring process    
  • Effectively corrects pin positions
  • Pin position inspection is implemented after flaring
  • Adopts a unique gripper design and motion control to prevent damage to the enamel insulation of flat wires
  • Featuring a flexible design, it is compatible with stators of different diameters and slot quantities; the number of grippers can be flexibly adjusted (max. support for 18 sets)
Expanding
  • CT: ≤ 60 s/piece
  • Real-time torque monitoring is implemented to effectively prevent damage to the enamel insulation of flat wires
  • Real-time mold entry force monitoring ensures no damage to products
  • The rotation angle of each layer is controlled by an independent servo motor
  • Each twisting die for every layer is equipped with an independent Z-axis compensation function, ensuring consistent height of the welding ends after twisting. No trimming is required, which significantly reduces copper wire loss
  • Mold clamping is adopted to prevent displacement of U-Pins and L-Pins
  • Pin position inspection and product cleaning functions are available after twisting
Twisting
  • CT: 0.2 s/weld spot
  • A fully automatic clamping device is adopted, with a first-pass yield reaching 99%
  • Adopting an advanced welding tooling design to ensure each pin per slot is equipped with independent driving force for gap‑free clamping
  • Independent shielding gas assistance is configured to effectively reduce spatter and improve welding quality
  • Fixtures for welding ends support automatic disassembly and assembly
  • AI vision technology is applied to implement weld spot quality inspection
Laser Welding
Process Section
Paper Insertion
PIN Forming
  • I-pin Forming
  • U-pin Forming
Auto-basket Setting
Final Insertion
Flaring
  • Thermal Insulating Paper Flaring
  • Flyer Flaring
Twisting
Flush Cutting
Welding
  • Inner I-Pin Welding
  • Busbar Welding
  • Conventional Spot Welding
Inspection
  • AOI Inspection
Drip Impregnation
Coating
Curing
Cooling
Cleaning
  • Air Blower Cleaning
Testing
  • EOL Testing
  • Final Inspection
Marking
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