Famous Double Head Reel Uncoiler Manufacturers & Factories

The primary advantage is the total eradication of changeover downtime. In continuous production lines (such as ERW pipe mills, high-speed slitting lines, and automotive stamping), loading a master coil onto a single mandrel requires 15 to 25 minutes of dead time: overhead crane positioning, mandrel insertion, expansion, band cutting, and manual jogging. A double head reel uncoiler enables the operator to load and band-prep the secondary coil on the outward-facing mandrel while the working spindle feeds the running line. Swiveling the new coil into working position via 180° hydraulic indexing takes under 2 minutes, increasing operational uptime by up to 25% across multiple shifts.

Jianfa double head reel uncoilers integrate a dual-stage safety interlock system. Rotation is executed by either a heavy hydraulic rack-and-pinion actuator or a cycloidal motor with an electromagnetic brake. Once the carousel completes its 180-degree traverse, heavy-duty pneumatic/hydraulic shot-pins engage into hardened locating bushings in the base chassis, physically locking the turntable against mechanical movement. Rotation is electrically interlocked with downstream sensors—it is impossible to index the carousel if the strip payoff drive is engaged, if snubber arms are lowered, or if safety optical light curtains are broken.

Depending on line speed and material gauge, we employ two primary methods: (1) Heavy-duty multi-caliper pneumatic disc brakes with electro-pneumatic proportional pressure regulators that automatically reduce braking torque as the coil outer diameter diminishes, maintaining constant strip back-tension; or (2) Regenerative AC vector variable frequency drives (Siemens or Yaskawa) acting as electrical braking generators. For high-strength steel that exhibits extreme spring-back tendencies, motorized overhead snubber arms with polyurethane-coated wheels hold the outer coil wrap firmly during OD banding removal and threading.

Yes. The standard 4-segment wedge-type hydraulic expansion mechanism covers standard coil ID ranges of Ø470 mm to Ø520 mm. To process larger master coils with core IDs of Ø610 mm, Ø710 mm, or Ø760 mm, Jianfa provides precision-machined quick-change shoe segments (available in high-strength aluminum alloy or forged steel, with optional vulcanized polyurethane covers to protect sensitive aluminum or cold-rolled strip inner wraps). The shoes attach firmly via countersunk cap screws, allowing changeover in minutes.

Because double head uncoilers carry cantilevered asymmetric loads up to 35 tons per side during rotation, a reinforced concrete foundation with engineered anchor tie-bolts is mandatory. Wuxi Jianfa provides certified civil engineering foundation drawings detailing dynamic overturning moments, reinforcing rebar specs, and conduit routing ahead of machinery shipment. Hydraulic power units (HPUs) featuring Rexroth or Yuken valving and internal immersion water/oil coolers can be mounted in an adjacent pit or enclosed on the factory floor.

Every line completes rigorous Factory Acceptance Testing (FAT) with test coils at our 40,000 m² Wuxi facility before containerization and moisture-barrier export crating. Upon arrival at the buyer's site, our senior mechanical and electrical commissioning engineers deploy directly to supervise foundation leveling, hydraulic piping, electrical termination, dry-cycle verification, and operator training until commercial output targets are consistently achieved.