A typical automotive cross beam production line spans 50 to 60 meters, integrating decoiling, straightening, feeding, stamping, and roll-forming operations. In such extended-process layouts, the most devastating efficiency killer is rarely the cycle time of any individual machine — it is the coil change downtime. Conventional single-head uncoilers require operators to stop the entire line, thread out the remaining tail, hoist a new coil, clamp and expand it, feed the leading edge through the straightener, and re-establish tension before production can resume. This entire sequence consumes 15 to 30 minutes even for experienced operators. With 4 to 6 coil changes per day on a busy cross beam line, the cumulative non-production time reaches 1 to 3 hours every single day — a silent but substantial drain on capacity and revenue. The Yuanjia KHT Series Double-Head Uncoiler is purpose-built to eliminate this bottleneck entirely. Its core design philosophy centers on dual-station alternating feeding with zero-downtime coil switching. Each station features an independently driven spindle powered by a Siemens variable-frequency motor with a dedicated inverter. A hydraulic expansion mechanism accommodates coil inner diameters from 460mm to 530mm, with a maximum outer diameter of 1600mm. While one station is actively feeding material into