Semi Automatic Z Fold Stacking Machine for Sodium Ion and Advanced Battery Cell Prototyping

Product Overview

This semi-automatic Z-fold stacking machine delivers precision layer-by-layer assembly for next-generation pouch cell prototyping. Engineered specifically for research facilities and pilot production environments, the system automates continuous separator interleaving while providing intuitive, operator-guided electrode sheet positioning. By synchronizing high-stability pneumatic traversal with customizable alignment fixtures, the equipment eliminates separator wrinkling, short-circuit risks, and electrode misalignment, establishing an uncompromising standard for experimental cell fabrication.

Designed to handle advanced chemistries including sodium-ion, lithium-ion, supercapacitor, and solid-state battery systems, this unit accommodates a broad spectrum of cathode and anode dimensions. Its flexible tooling architecture allows rapid adjustment between varied form factors without requiring dedicated modular retooling. The integration of ergonomic foot-pedal actuation and a digital preset counter streamlines the cell fabrication workflow, enabling technicians to maintain high throughput while upholding exact repeatability across multi-layer cell stacks.

Built on a rigid, vibration-resistant frame with precision-machined guide rails, the apparatus ensures dependable performance in demanding laboratory and cleanroom environments. Its compact benchtop footprint integrates seamlessly into standard dry rooms or laminar flow hoods. With low maintenance overhead, intuitive setup calibration, and robust mechanical construction, this stacking solution provides academic institutions, battery R&D centers, and industrial manufacturers with a reliable pathway from coin-cell screening to full-format pouch cell validation.

Key Features

• Precision Z-Fold Separator Interleaving: The pneumatically driven swing roller mechanism executes smooth 300 mm reciprocal travel, automatically laying the continuous separator roll over alternating anode and cathode sheets to eliminate manual folding inconsistencies and internal micro-stress.
• Broad Electrode Dimension Compatibility: The versatile stacking platform accommodates cathode and anode sheets ranging from 20 mm to 200 mm in both length and width, supporting cell stack thicknesses up to 18 mm for diverse pouch cell capacities.
• Integrated Digital Layer Counter: An intelligent digital display counter monitors stacking progress in real time and automatically halts or signals completion upon reaching target layer counts, eliminating manual counting errors in dense multi-layer assemblies.
• Ergonomic Foot-Pedal Pneumatic Actuation: Hands-free foot-switch activation controls the swing roller stroke, allowing operators to maintain two-handed control over precise electrode placement and edge alignment against the mechanical positioning stops.
• Standard 3-Inch Core Separator Payoff Reel: The feed assembly supports standard industrial separator rolls up to 200 mm outer diameter on a 3-inch core, ensuring smooth unwinding tension and preventing separator elongation or distortion during continuous cycles.
• Compact and Rigid Benchtop Profile: With an optimized footprint of 650 mm × 400 mm × 700 mm and an independent control unit, the system maximizes cleanroom workspace efficiency while maintaining superior mechanical rigidity during high-speed reciprocal motion.
• Simplified Maintenance and Fast Changeover: Modular alignment jigs, accessible lubrication points on linear bearings, and rapid-adjust fixture rails minimize transition downtime between differing cell chemistry dimensions and research projects.

Applications

Technical Specifications

Operational Workflow & Maintenance Engineering

Operational Workflow

1. Separator Setup: Mount the continuous separator roll (up to φ200 mm on a standard 3-inch core) onto the unwind shaft. Thread the separator web through the tension guide rollers and swing roller assembly, positioning the leading edge securely across the stacking table fixture.
2. Parameter Preset: Input the desired total layer count into the digital counter on the independent control box.
3. Initial Layer Placement: Place the first negative electrode (anode) sheet onto the stacking stage against the precision mechanical alignment guides.
4. Z-Fold Interleaving Cycle: Depress the pneumatic foot pedal. The swing roller assembly traverses across the 300 mm stroke, folding the separator smoothly over the seated anode.
5. Counter-Electrode Placement: Position the positive electrode (cathode) sheet onto the newly folded separator layer using the positioning stops.
6. Reciprocal Folding: Depress the foot pedal once more. The swing roller returns along its linear path, folding the separator over the cathode.
7. Continuous Iteration: Repeat the placement and foot-pedal sequence until the digital counter signals target completion.
8. Finishing: Manually cut the continuous separator web, extract the aligned cell stack, and secure the assembly with termination tape for subsequent tab welding or packaging.

Preventive Maintenance Guidelines

• Surface Cleanliness: Routinely wipe the swing rollers, guide shafts, and stacking platform with lint-free wipes and electronic-grade isopropyl alcohol to prevent particulate contamination.
• Kinematic Lubrication: Periodically apply high-grade mechanical lubricant to the linear motion guide rails and bearing assemblies to ensure low-friction reciprocal movement and prevent premature wear.
• Fastener Integrity Inspections: Conduct regular visual and torque inspections of all structural bolts, pneumatic cylinder linkages, set screws, and guide pins to eliminate loosening caused by reciprocal operational vibrations.
• Storage Protocols: When taking the unit offline for extended periods, thoroughly clean all surfaces, apply a protective anti-corrosion barrier to unpainted metal surfaces, and shield the chassis with protective wrap in a dry, temperature-controlled environment.

Why Choose This Product

• Industrial-Grade Alignment Precision: Eliminates the layer misalignment, edge burring, and separator tension variations inherent to manual stacking methods, ensuring cell stacks meet exacting electrochemical testing standards.
• Universal Chemistry Adaptability: Engineered to handle the unique mechanical properties of conventional lithium-ion active materials as well as sensitive, brittle sodium-ion formulations with equal reliability.
• Turnkey Integration for R&D Workflows: Low utility requirements (standard 220V power and 0.4–0.7 MPa compressed air) coupled with a compact 30 kg structure make this system immediately deployable into standard glovebox ante-rooms, dry rooms, or benchtop lab spaces.
• Operator-Centric Ergonomics: Foot-switch triggering paired with dual mechanical positioning stops reduces operator fatigue and streamlines high-layer pouch cell assembly during high-frequency testing cycles.
• Comprehensive Technical Support: Backed by dedicated battery processing expertise, responsive application engineering support, and complete availability of replacement components.

Contact our technical sales team today to request a quotation or discuss how this system can be customized for your battery research parameters.

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