Automatic EI-100 Lamination Stacking Machine for Machine Tool and UPS Transformer Core Assembly, ±0.1 mm Accuracy, 250 Stacks/Min, PLC Control, CE

Automatic EI-100 Lamination Stacking Machine for Machine Tool and UPS Transformer Core Assembly

The EI-100 automatic lamination stacking machine inserts E & I silicon steel laminations into transformer coil bobbins under PLC control. Built for 600-1200 VA cores used in machine tool control and UPS transformers, it holds ±0.1 mm stacking accuracy at up to 250 stacks per minute.

What a Buyer's Auditor Asks About Your Stacking Line

When a machine tool builder or a data centre equipment supplier qualifies a new transformer source, the questions are rarely about price first. They ask how the core is assembled, how you know it is assembled correctly, and what happens when it is not. Those three questions decide whether a trial order becomes a framework agreement. The EI-100 is built to answer them with evidence rather than assurances.

How is the core assembled? Laminations are fed, positioned and inserted by machine to ±0.1 mm stacking accuracy, with ±0.02 mm positioning repeatability. The process does not depend on which operator is on shift.

How do you know it is correct? The PLC counts every lamination and records the cycle result. Stack count, insert depth and timing are held in a stored recipe per core size, so the specification on the drawing is the specification that was run.

What happens when it is not? Photoelectric sensors detect a misfeed and stop the cycle before laminations are crushed, the fault is written to the controller, and the affected piece is traceable to its batch.

Why These Two Applications Care

A machine tool control transformer sits behind the CNC drive, the servo amplifier and the safety circuit. Its output must stay stable through spindle starts and axis accelerations, because a control supply that sags under load turns into nuisance alarms that the machine builder's service team pays for. Stack consistency keeps the effective air gap and the regulation curve where the design put them.

A UPS transformer carries the more brutal job: it is sized for overload and inrush, and it is expected to work after years of sitting on float charge, waiting for a mains failure that may come once. Core loss and stack integrity decided at assembly are what remain when that day arrives - there is no second chance to fix a buzz or a hot spot inside a live installation.

Key Specifications

Core Programs the EI-100 Covers

A bobbin window of about 33 mm puts the EI-100 in the 600-1200 VA band: machine tool and CNC control transformers, UPS and inverter isolation transformers, industrial power supplies, and general three-phase related single-phase control units. CRGO and CRNGO grades are both supported, at 0.3 mm, 0.35 mm and 0.5 mm sheet thickness, with cardboard or plastic bobbins. The machine runs standalone or as a station in a winding-to-varnish line, and each core size keeps its own saved recipe.

Documentation and Supply

Each machine ships with an operating manual, a recommended spare parts list and the recipe set for the core sizes you specify. Delivery is 1-15 working days for standard configurations, with professional after-sales technical support and a 12-month warranty. We are a direct manufacturer with CE certified equipment, serving customers including GE Vernova and Eaton (USA) as well as CATL and Chint Electric, and exporting to more than 20 countries and regions. The full EI series from EI-19 to EI-300 is available from one supplier.