Automatic Hydraulic Sealing Machine for Cylindrical Batteries

Product Overview

This automatic hydraulic sealing machine is designed for cylindrical battery closure after cell assembly. It automates feeding, positioning, sealing, and discharge while applying a controlled multi-stage crimping process. The equipment performs first-stage, second-stage, and third-stage sealing to create a smooth closure edge with strong dimensional accuracy and reliable airtightness. Its compact structure, 3000 kg maximum sealing pressure, and programmable operation support consistent battery production with reduced operator variability.

The system is suited to cylindrical battery research, pilot-scale cell fabrication, and repeatable laboratory production. It is particularly valuable for teams working with 18650 and 21700 cells, as well as other cylindrical formats supported by interchangeable tooling. The split design allows operation inside a glovebox, making the unit suitable for controlled-atmosphere workflows involving moisture- or oxygen-sensitive battery materials.

A rigid steel construction, precision tooling, and long-life sealing mold support dependable operation under demanding production schedules. With a rated mold life exceeding 3 million cycles, a processing accuracy of ±0.1 mm, and a throughput of 6 pieces per minute, this equipment is engineered for stable performance, repeatable closure quality, and straightforward maintenance over an extended service life.

Key Features

• Automatic Material Handling: Automated infeed and outfeed reduce manual handling steps and improve the repeatability of cylindrical cell positioning during production.

• Three-Stage Sealing Process: First-stage, second-stage, and third-stage crimping form the closure progressively, producing a flat sealing edge, reliable airtightness, accurate dimensions, and consistent finished cells.

• Glovebox-Compatible Split Design: The separated construction allows the operating section to be installed or used inside a glovebox, supporting controlled-atmosphere battery assembly and sealing processes.

• PLC Touchscreen Control: A PLC-based touchscreen interface makes operating parameters easy to set and provides a high level of automation for repeatable production routines.

• Precision Sealing Tooling: Carefully engineered molds support accurate forming and reliable closure geometry, helping maintain consistent sealing results across production batches.

• High Structural Rigidity: A robust steel frame provides stable support during hydraulic compression, helping minimize movement and maintain process accuracy during repeated operation.

• High Cycle Durability: The sealing mold is rated for more than 3 million cycles, supporting long-term use in research laboratories, pilot lines, and production-oriented development environments.

• Interchangeable Mold Configuration: The standard tooling is configured for the 18650 series, while optional tooling enables processing of other cylindrical battery sizes, including 21700 formats.

• Compact and Maintainable Form: The compact footprint combines convenient operation with simplified maintenance access, making the equipment practical for laboratories where floor space and process efficiency are important.

Applications

Technical Specifications

The three-stage sealing sequence is central to the equipment's performance. Rather than relying on a single compression step, the process forms the closure through progressive operations. This supports a level sealing edge, reliable airtightness, accurate final dimensions, and improved consistency between cells. The approach is suitable for battery development programs where small differences in closure geometry can affect subsequent testing, handling, and long-term evaluation.

The standard 18650 mold allows users to begin processing a widely used cylindrical battery format. When development work requires another cell diameter or height, the mold can be replaced with a compatible optional configuration. This tooling flexibility is useful for laboratories and pilot facilities that need to evaluate multiple cylindrical cell designs without purchasing a separate complete sealing system for each format.

The PLC touchscreen interface provides a direct way to configure operating parameters and manage automated cycles. This reduces the number of manual interventions required during routine operation and supports a more controlled production sequence. For research teams, clear parameter access also makes it easier to document process conditions and reproduce sealing results during comparative experiments.

The split construction is especially important for controlled-environment battery work. The equipment can be arranged for operation within a glovebox, helping users maintain the atmosphere required for moisture-sensitive or oxygen-sensitive materials. This configuration supports workflows in which cell components must remain protected from ambient conditions through the sealing stage.

A maximum sealing pressure of 3000 kg provides the forming force required for cylindrical battery closure operations. The rigid steel structure helps maintain stability as hydraulic force is applied, while the precision mold design controls the final geometry. Together, these features support accurate forming and help limit variation caused by frame movement or inconsistent tooling support.

The specified processing accuracy of ±0.1 mm gives buyers a clear reference for dimensional control. This is relevant when sealing parameters must be compared across batches or when finished cells need to meet defined mechanical and dimensional requirements. The combination of controlled pressure, precision tooling, and automated movement supports reliable operation in both experimental and repeat production settings.

With a rated capacity of 6 pieces per minute, the system provides practical productivity for laboratory and pilot-scale use. The output level allows development teams to process structured experimental batches efficiently while retaining control over the sealing sequence. It can also support small production runs where manual sealing would create excessive labor requirements or introduce unacceptable variation.

The mold service life is specified as more than 3 million cycles, reflecting a design intended for sustained use rather than occasional operation. Long mold life can reduce replacement frequency, minimize downtime, and improve the predictable operating cost of the equipment. The durable steel structure further supports stable use across repeated production cycles.

The compact dimensions of L550W420H800mm make the unit suitable for laboratories, pilot rooms, and glovebox-linked work areas where available space is limited. Its 0.5KW power rating and 220v/50Hz power supply simplify integration into facilities using the specified electrical standard. Compressed air requirements of 0.5MPa to 0.7MPa should be available at the installation location for proper operation.

Why Choose This Product

• Built for Repeatable Cell Quality: Progressive three-stage sealing, precision molds, and ±0.1 mm processing accuracy help deliver consistent closure geometry across experimental and pilot batches.

• Designed for Long-Term Use: A rigid steel structure and mold service life exceeding 3 million cycles support dependable operation and reduce the disruption associated with frequent tooling replacement.

• Suitable for Controlled Atmospheres: The split configuration enables glovebox operation, extending the equipment's usefulness to sensitive battery materials and advanced cell fabrication workflows.

• Flexible Across Cell Formats: Standard 18650 tooling and optional molds for other cylindrical battery specifications allow the system to adapt as development programs change.

• Efficient Automated Operation: PLC touchscreen control, automatic material handling, and a capacity of 6 pieces per minute improve process consistency while reducing repetitive manual work.

Contact us for a quotation, compatible tooling options, and a sealing configuration matched to your cylindrical battery development or pilot-production requirements.

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