Semi Automatic Battery Bottom Welding and Grooving Machine 2 in 1 Cylindrical Cell Grooving and Spot Welder

Product Overview

This integrated production workstation combines cylindrical cell bottom tab spot welding and precision case mouth grooving into a single, high-efficiency manufacturing unit. Engineered specifically for high-integrity cylindrical battery assembly, the equipment bridges two critical cell-casing fabrication steps into a smooth, coupled mechanical workflow. By consolidating bottom welding and rolling-groove forming, battery manufacturers eliminate redundant manual material handling, preserve strict axial alignment between process steps, and substantially reduce floor footprint in cleanroom assembly facilities.

Designed for secondary battery manufacturing lines, pilot-scale facilities, and specialized cell prototyping centers, the unit supports primary cylindrical formats including 18650 and 21700 specifications. The modular dual-station architecture enables seamless inline docking where an operator loads bare cell assemblies at the bottom-weld infeed, after which the unit automatically transfers the can through precision spot welding, intermediate verification, automated rolling grooving, and downstream discharge. Both processing modules can also be configured as standalone units to suit specific laboratory or scaled batch-production requirements.

Built for continuous industrial duty cycles, the machine utilizes rigid steel framing, high-precision pneumatic-hydraulic actuators, and a dedicated programmable logic controller paired with an industrial touchscreen interface. Precision micrometer and digital pressure adjustments guarantee that tight radial grooving tolerances (±0.05 mm) and low-resistance weld joints are consistently maintained across intensive production shifts. Integrated monitoring, short-circuit detection, and optical safety interlocks protect both equipment mechanisms and factory operators during demanding, repetitive production runs.

Key Features

• Unified 2-in-1 Inline Architecture: Features a rigid docking connection between the bottom welder and the roll-grooving module, allowing a single operator to feed materials at the inlet while automated mechanisms handle intermediate transfer and finished cell ejection.
• Precision Grooving Tolerances: Delivers tight mechanical forming accuracy with inner diameter precision of ±0.05 mm, shoulder height precision of ±0.05 mm, total height precision of ±0.1 mm, and casing mouth precision of ±0.1 mm for optimal subsequent top-cap crimp sealing.
• Multi-Format Cylindrical Cell Versatility: Fully compatible with standard 18650 and 21700 cylindrical steel casings, featuring adjustable tooling sets and independently tunable mechanical stroke parameters to accommodate diverse casing wall thicknesses and depths.
• Comprehensive Weld Process Monitoring: Advanced spot welding control enables real-time parameter configuration of weld voltage, peak current, duration, interval timing, pulling force verification, dynamic weld resistance monitoring, and automatic overcurrent alarms.
• Fine-Tuning Adjustment Controls: The main grooving head down-stroke travel, grooving cutter horizontal advance distance, groove depth, and forming pneumatic pressures are all independently adjustable via calibrated mechanical and digital controls.
• Integrated Short-Circuit and Tooling In-Place Sensing: Equipped with automated tooling positioning sensors and pre-weld short-circuit detection circuits that verify correct cell placement and insulation integrity before executing high-current welding discharge.
• Automated Lubrication and Oiling System: Features a programmable casing oiling function that applies a uniform micro-layer of lubricant to the rolling contact interface, reducing cutter wear and eliminating burrs or mechanical galling during high-speed grooving.
• Robust Safety and Diagnostic System: Built with an intelligent human-machine interface offering manual calibration modes, automated production counters, fault diagnostic prompts, a protective physical enclosure, and an optical safety light curtain.

Applications

Technical Specifications

Why Choose This Product

• Proven Process Consistency: Designed to eliminate manual transfer errors between tab welding and grooving stations, this system maintains rigid dimensional tolerances across thousands of consecutive production cycles.
• Engineered Versatility and Modularity: Seamlessly accommodates both 18650 and 21700 cylindrical platforms, with flexible procurement options allowing the system to operate as a docked 2-in-1 line or as independent modular stations.
• Advanced In-Line Quality Assurance: Incorporates critical pre-weld short-circuit testing, pulling force validation, current fault alarms, and automated tooling verification to minimize production scrap rates.
• Robust Industrial Build Quality: Built on a heavy-gauge welded steel chassis with wear-resistant precision tooling, safety light curtains, and automated lubrication systems designed for low maintenance overhead and extended service life.

Contact our technical sales team today to request a detailed quotation, discuss custom tooling requirements, or configure a tailored cylindrical battery fabrication solution for your manufacturing facility.

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