Semi Automatic Bottom Spot Welding and Groove Rolling Machine for Cylindrical Batteries

Product Overview

This semi-automatic bottom spot welding and groove rolling machine combines cylindrical battery bottom welding with steel shell mouth groove rolling in one connected production system. It is designed to support repeatable positioning, adjustable process conditions, and coordinated material transfer while reducing manual handling between the two operations. The equipment can also be configured as a standalone groove rolling machine or standalone bottom spot welding machine when the production line requires only one process.

The system is intended for cylindrical battery manufacturing, with the equipment function specifically supporting 21700 cylindrical battery bottom spot welding and groove rolling. The operating instructions also specify uniform 18650 cylindrical cells as the incoming material, so the required cell format and tooling should be confirmed against the customer’s production process before ordering. Its applications are relevant to battery pilot lines, laboratory-scale production, and manufacturing environments requiring controlled shell forming and bottom connection processes.

Adjustable tooling, welding parameters, pneumatic pressure, process counters, fault notifications, and fixture-position detection help operators maintain stable production conditions. Protective equipment, including an enclosure and safety light curtain, supports safer operation around the work area. The equipment is built for repeatability and practical serviceability, including welding needle maintenance access after extended use.

Key Features

• Integrated Bottom Welding and Groove Rolling: The connected configuration combines cylindrical battery bottom spot welding and steel shell mouth groove rolling in a coordinated workflow, reducing transfer steps between process stations.

• Semi-Automatic Material Handling: Operators place incoming cells at the bottom welding feed position, while the downstream equipment automatically transfers and discharges material. This arrangement improves workflow continuity without requiring a fully automatic loading system.

• Adjustable Groove Geometry: The main top head compression distance, groove cutter distance, groove depth, and groove shoulder height can be adjusted according to the customer’s steel shell requirements. These controls support different process dimensions within the applicable production range.

• Consistent Forming Accuracy: The equipment provides groove inner diameter accuracy of ±0.05 mm, shoulder height accuracy of ±0.05 mm, total height accuracy of ±0.1 mm, and shell mouth accuracy of ±0.1 mm, supporting consistent cylindrical cell shell preparation.

• Configurable Welding Parameters: Welding voltage, current, time, welding power, pressure, stroke, and interval time can be adjusted for the required bottom spot welding process. Resistance verification and welding power verification provide additional process-control references.

• Pneumatic Process Adjustment: Groove rolling air pressure can be adjusted according to the battery steel shell model and material thickness. The equipment requires a dry compressed air source at 0.5 to 0.6 MPa or higher.

• Operator Adjustment Interface: Manual debugging functions allow operators to fine-tune groove rolling and welding stations. The automatic groove rolling control interface includes manual and automatic adjustment items, oil application functionality, and short-circuit testing functionality.

• Production and Fault Monitoring: Groove rolling and welding counts help operators monitor output in real time. Abnormal-condition prompts, current alarms, pull-force testing, and automatic fixture-position detection support faster response to process deviations.

• Protected Operating Area: The machine includes protective equipment such as an external enclosure and safety light curtain. These features help separate operators from moving process areas during operation.

Applications

Technical Specifications

Why Choose This Product

• Premium Process Consistency: Controlled groove dimensions and adjustable welding conditions help maintain stable results across repeated production cycles.

• Flexible Configuration: The integrated system can be purchased as a combined unit, while standalone groove rolling or bottom welding configurations are available when the production requirement is narrower.

• Practical Operator Control: Manual debugging, production counters, fault prompts, fixture detection, and process verification functions make daily operation easier to monitor and adjust.

• Robust Production Design: A 4500 W electrical system, adjustable pneumatic processing, protective enclosure, and safety light curtain provide a substantial platform for demanding battery production environments.

• Application-Specific Engineering: Groove depth, shoulder height, shell-mouth dimensions, air pressure, and welding settings can be adapted to customer process requirements, supporting a more durable investment than fixed-purpose equipment.

Contact us for a quotation, process consultation, or custom configuration matched to your cylindrical battery format and production requirements.

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