Automatic EI-35 Lamination Stacking Machine for Audio and Small Power Transformer Core Assembly, ±0.1 mm Accuracy, 250 Stacks/Min, PLC Control, CE

Automatic EI-35 Lamination Stacking Machine for Transformer Core Assembly

The EI-35 automatic lamination stacking machine is built for compact EI-35 cores used in audio and small power transformers. It inserts E & I silicon steel laminations into transformer coil bobbins under PLC control with repeatable accuracy and consistency. Compared with manual stacking, it improves production efficiency by 8-10 times and raises core consistency above 95%, making it an ideal core production machine for manufacturers of audio-grade and small-format transformers.

Why Audio-Grade Cores Demand Better Stacking

In audio and instrumentation transformers, the magnetic quality of the core is directly audible. Uneven stacking pressure can damage the interlaminar insulation and raise eddy-current loss, while inconsistent lamination alignment changes the effective air gap and increases hum. The EI-35 stacking machine places every lamination with the same controlled motion, protecting the insulation coating and producing uniform, tightly compressed stacks - batch after batch.

Key Specifications

Key Features & Advantages

✅ Audio-Grade Stacking Consistency – Every stack receives the same controlled insertion force and compression, keeping the effective air gap uniform across production batches.

✅ Protects Interlaminar Insulation – Smooth, jam-free lamination handling preserves the insulation coating on thin silicon steel, helping reduce eddy-current loss and audible hum.

✅ PLC Intelligent Control – Touch-screen PLC allows precise setting of lamination quantity and stacking speed; parameters change in seconds for different core sizes.

✅ Gentle on Thin Laminations – Handles 0.3 mm, 0.35 mm and 0.5 mm EI silicon steel sheets smoothly without edge damage or deformation.

✅ Jam-Resistant Operation – Auto-stop function when lamination jams occur, protecting both material and machine and keeping production interruption-free.

✅ Compact & Export-Friendly Design – Space-saving structure and 70 kg weight simplify factory layout and international shipping.

✅ Durable & Safe – High-strength steel frame, dual grounding, overload and short-circuit protection, emergency stop and safety guards.

Applications

Ideal for manufacturing EI-35 cores for audio output transformers, microphone and line-matching transformers, instrument power transformers, small control and isolation transformers, and other 3-15 VA electromagnetic components. The full series from EI-19 to EI-300 is available to meet diverse production requirements.

Why Choose Us?

Direct manufacturer with competitive factory pricing and CE certified quality assurance. Our products have served globally renowned customers including GE Vernova and Eaton (USA) as well as leading enterprises such as CATL and Chint Electric, and are exported to more than 20 countries and regions. Fast delivery within 1-15 working days, professional after-sales technical support, 12-month warranty.