Customer scenario

An Indian actuator and camera module manufacturer producing Voice Coil Motors (VCMs) for smartphone and automotive cameras required a fully automatic assembly cell optimized for optical-component-level accuracy. Their production demanded simultaneous glue dispensing and component placement flows, tight positional tolerances to protect lens/grating performance, and reliable inline verification to prevent rework. The customer also needed a platform capable of supporting multi-valve dispensing, tilted and rotated glue paths, and adaptable process sequences for mixed product runs.

Mingseal AC100 solution

Mingseal configured the AC100 automatic mounting & precision dispensing system as an integrated VCM assembly cell tailored to optical-component requirements. The delivered solution supports combined dispense-then-place and place-then-dispense workflows, enabling flexible sequencing to match different VCM designs and adhesive chemistries. The system’s compatibility with up to four simultaneous valves increases throughput and process versatility while preserving sub-micron placement performance for delicate optical elements.

Key capabilities and process features

• Dual-mode flow: The AC100 executes both point-dispense + pick-and-place and pick-and-place + point-dispense process flows on a single line. This dual-mode capability reduces line changeover and shortens qualification cycles when moving between lens-first and adhesive-first assembly strategies.

• Four-valve simultaneous dispensing: The dispensing station accepts up to four valves running concurrently (piezojet, screw, or two‑component metering), allowing multi-point adhesive patterns, parallel dosing for multiple components, or independent TIM/adhesive lines for mixed product families. Parallel dispensing reduces cycle time while maintaining consistent shot mass and placement repeatability.

• Tilt and rotation dispensing head: The AC100’s tilting module (±30°) and rotary compensation deliver complex, multi-face dispense trajectories required for contoured VCM housings and angled magnet/lens seating. This enables uniform bead profiles on non-planar surfaces and precise edge coverage without mechanical interference to fragile optics.

• High-precision mounting and compensation: The mounting head combines linear-motor positioning with direct-drive fine compensation to achieve micron-class placement accuracy. Automatic focus vision recognizes varying part heights and corrects Z-axis approach for precise seating of optical components and coils.

• Inline adhesive effectiveness detection: A dedicated glue-effect inspection module measures bead geometry and wetting behavior immediately after dispense. By identifying under-fill, stringing, or mis-wetting in real time, the system reduces downstream rework and ensures consistent VCM damping and magnetic centering performance.

Quality control and smart factory integration 

AC100 logs dispense images, placement coordinates and process parameters for each unit and supports MES connectivity and industry-standard communication protocols. Integrated AOI and pick-and-place verification create closed-loop feedback to automatically tune dispense volume, pulse parameters and placement offsets during the run—improving first-pass yield and reducing variability across batches.

Production outcomes and value

• Increased yield and reliability: Real-time glue-effect detection and accurate placement reduce optical misalignment and adhesive-related failures, boosting first-pass yield and lowering warranty risk for camera assemblies.

• Greater flexibility and throughput: Four-valve simultaneous dispensing and dual-mode process sequencing support mixed-model lines and higher UPH without added footprint.

• Reduced qualification time: Modular tooling and multi-valve compatibility shorten changeover for new optics or adhesive materials, supporting rapid product updates in India’s fast-moving mobile market.

Conclusion 

For Indian VCM and optical-module manufacturers seeking a high-precision, highly adaptable automated cell, the AC100 provides an integrated solution that combines advanced dispensing, angled-path capability, multi-valve throughput and inline adhesive-effect inspection. Contact Mingseal to pilot the AC100 on your VCM designs and validate cycle time, placement accuracy and adhesive performance in your production environment.