Changzhou Mingseal Robot Technology Co., Ltd.

Customer scenario A Malaysian electronics OEM producing AI glasses required a robust inline solution for SiP packaging of the main control module. Substrates measure up to 325 × 162 mm and integrate 40~60 chips per board. Individual die sizes are under 10 × 10 mm with solder bumps 150~200 μm tall, 250~350 μm pitch and only 90 μm gaps between components. Underfill at the pad bottom is especially challenging: the process demands micro-scale, repeatable control of adhesive volume and flow to ensure full wetting without overflow or voids. Mingseal FS600S solution Mingseal proposed the FS600S inline Dam & Fill system tuned for high-density SiP underfill in AI glasses control modules. Key process elements delivered on the customer’s constraints: Non-contact high-speed jetting: Piezo-driven dispensing at up to 1000 Hz with a minimum droplet size of 0.5 nL enables ultra-fine micro-dosing into tight 90 μm gaps without mechanical contact that might disturb fragile bumps or nearby components. Full-zone precision temperature control: Independent, closed-loop temperature control across the feed and dispense zones maintains adhesive rheology with ±3°C stability, ensuring consistent viscosity and predictable flow during long runs and across different adhesive chemistries. Vision plus intelligent closed-loop algorithms: Dual high-resolution cameras locate fiducials and component edges with micron-class accuracy. An intelligent control loop combines visual alignment with periodic inline microbalance sampling to auto-correct dispense mass and maintain target volume per cavity. Multi-pass segmented paths: For very narrow 90 μm gaps, the FS600S programs multi-pen segmented fill strokes that sequentially deposit and let capillary action draw adhesive under the die, ensuring complete wetting while avoiding over-apply at edges. Micron-level repeatability: System mechanics and motion control deliver 10 μm repeat positioning to reliably hit narrow gaps between bumps and maintain uniform bead geometry across densely populated substrates. Production outcomes and value Robust solder-joint protection: Controlled underfill penetration around 150~200 μm bumps reduces mechanical stress on solder joints, improving drop and vibration resistance for wearable devices. Preserved touch sensitivity and thermal performance: Precise, minimal adhesive over-apply prevents sensor interference and maintains designed thermal pathways, keeping the AI glasses cool during continuous operation. Higher yield and reliability: Reduced voiding and consistent underfill coverage cut rework and thermal cycling failures, improving lot yield and long-term reliability necessary for consumer wearables. Traceability and integration: FS600S supports MES docking and stores dispense recipes, images and weight logs for production traceability and quality audits. Conclusion  For Malaysian AI glasses manufacturers facing extreme miniaturization and tight geometries, the FS600S provides a practical, high-throughput inline underfill solution. By combining sub-nanoliter jetting, precise thermal control, intelligent vision-based closed-loop correction and multi-pass fill strategies, the FS600S secures mechanical protection, thermal stability and reliable field performance—helping AI eyewear withstand drops, moisture and extended use. Contact Mingseal to validate the FS600S with your adhesive and SiP layout in a pilot run.

Background and Problem A Malaysian tier‑1 supplier producing automotive temperature and pressure sensors needed to convert a manual potting and thermal‑gap‑filling step to an automated cell. Operators applying thermally conductive glue by syringe produced inconsistent bead volume and weight, causing variable thermal transfer, part failures in thermal cycling, and significant rework. The customer required a solution that could integrate with existing robot arms, deliver repeatable per‑shot mass control, and support higher throughput with reduced material waste. Cause Primary failure modes were operator variability in squeeze pressure and dispense time, air entrainment and inconsistent paste supply from pressure pots, and lack of closed‑loop control for per‑part glue mass. These issues led to under‑ or over‑apply, inconsistent thermal paths between sensor die and housing, and increased scrap and customer complaints during vehicle qualification testing. Solution — KSV3000 Concentric Auger Valve Integrated with Robot Cell Mingseal supplied the KSV3000 concentric auger valve (wear‑resistant model) and integrated it onto the customer’s six‑axis robot end‑effector to replace manual dispensing. The KSV3000’s positive displacement screw metering and motor‑driven pulse control solved the core metering problems while enabling fast cycle rates required by the automotive takt. Key Implementation Details Positive displacement metering: The concentric auger design produces linear flow proportional to motor rpm, eliminating pressure‑pulse artifacts that plague pneumatic systems. Each timed motor pulse yields a fixed volumetric shot, giving tight control of glue weight per part. High‑speed capability: The KSV3000 supports up to 500 rpm, enabling short pulse durations for small, repeatable deposits while matching robot motion speed for in‑motion dispensing and higher UPH. Wear‑resistant wet path: Selected wetted materials resist abrasive, filler‑loaded thermal pastes and minimize clearance changes over long runs—reducing drift and maintenance frequency. Compact head for robot mounting: The small footprint and quick‑change nozzle interface simplified end‑effector design and allowed fast nozzle swaps for different sensor families. Process tuning and validation: Mingseal performed bench characterization to determine rpm, pulse time, and nozzle diameter for each thermal‑paste formulation and pad geometry. Encoder feedback on motor pulses was used to guarantee shot repeatability. Integration and Process Flow The cell was configured with robot pick‑and‑place, KSV3000 mounted on the wrist, and a heated, agitated feed pot with controlled pressure to maintain paste conditioning. Typical flow: robot aligns over sensor housing using vision fiducials, performs in‑motion bead or dot dispensing following the programmed path, and the part is weighed on a microbalance sample station at regular intervals. If mass drifts beyond SPC limits, the system triggers a purge, auto‑recalibration, or stops for maintenance. Results and Benefits (Malaysian Deployment) Controlled glue mass: Per‑shot variance fell below targeted tolerance, eliminating under‑fills and excessive squeeze‑out; weight control reduced thermal performance variance across lots. Yield and quality improvement: Automated metering and closed‑loop sampling reduced rework and scrap—enabling more consistent thermal test pass rates and lowering warranty risk. Throughput uplift: Robot‑mounted KSV3000 supported continuous, high‑speed dispensing cycles, increasing UPH versus manual lines while maintaining precision. Reduced material waste: Positive displacement metering and tuned nozzle selection minimized over‑apply and cleaning frequency, lowering material cost per unit. Lower maintenance and predictable uptime: The short fluid path and wear‑resistant components reduced clogging; quick nozzle changes and scheduled purge cycles simplified preventive maintenance. Recommendations and Best Practices Run a material characterization test to define rpm/pulse maps for each paste lot. Use encoder feedback and periodic microbalance checks for closed‑loop mass control. Implement purge and nozzle‑change SOPs based on shot counts for automotive traceability. Conclusion  For Malaysian automotive sensor manufacturers, the KSV3000 concentric auger valve offers a robust path from manual dispensing to automated, robot‑mounted metering. Its mechanical positive displacement, high rpm capability, and wear‑resistant design deliver repeatable glue weight control, higher throughput, reduced waste, and improved thermal performance consistency—supporting scale‑up for demanding automotive production. Contact Mingseal for on‑site trials and process qualification with your thermal paste.

Background and Problem A Thailand-based contract manufacturer supplying wireless magnetic rings for premium smartphones faced challenges when scaling production. The magnetic ring assemblies feature irregular 3D geometries and tight keep-out zones; manual or 3‑axis dispensing produced inconsistent bead profiles, excess squeeze‑out, and frequent rework. Customers required repeatable adhesive fillets for reliable mechanical bonding and cosmetic finish while maintaining high throughput for volume phone assembly. Cause  Irregular, curved part surfaces and varying local heights made nozzle path planning and Z‑compensation difficult for conventional dispensers. Limited axis freedom meant the tool could not maintain optimal nozzle angle and distance across the entire ring profile, causing variable bead width and incomplete wetting at critical contact points. Lack of inline inspection and recipe traceability allowed drift to persist across shifts, increasing scrap and downstream assembly failures. Solution — PD500D Five‑Axis Linkage Dispensing System Mingseal deployed the PD500D five‑axis linkage dispensing robot tailored to the Thai customer’s wireless magnetic ring process. The PD500D’s 5‑axis interpolation and high‑precision motion directly address curved surface dispensing by enabling the nozzle to follow complex 3D contours with correct tilt and continuous Z compensation. Key Implementation Details True 5‑axis path following: Complex ring geometries were programmed as 3D spline paths so the nozzle maintained optimal approach angles for consistent bead geometry along inner and outer ring surfaces. Ultra‑high repeatability: Linear motor X/Y and servo Z delivered ±0.003 mm repeatability, minimizing shot‑to‑shot variation in bead width and volume—critical for both mechanical strength and surface appearance. Dual‑station operation: While one station performed dispensing, the second executed inline AOI inspection and sampling, ensuring continuous production without process interruption and maximizing uptime. Smart vision alignment: CCD-based auto-focus and fiducial recognition corrected XY/Tilt offsets in real time, compensating for part placement variance and panel warpage common in high-speed feeders. Process flexibility: The system supported dot, bead and short-line modes with controlled speed/pressure profiles to optimize adhesive wetting for different adhesive chemistries (structural epoxy, UV-curable or thermally cured adhesives). Results and Benefits Improved yield and reduced rework: Consistent fillet geometry and accurate placement reduced adhesive over‑apply and squeeze‑out, decreasing rework rates and improving first‑pass yield on functional and cosmetic inspections. Higher throughput: Dual‑station configuration and high acceleration motion allowed continuous dispense/inspect cycles, raising effective output while keeping cycle time per part within takt targets. Reduced material waste: Precise volumetric control minimized adhesive consumption per part and limited cleaning cycles, lowering material cost and downtime. Better product reliability: Uniform bond areas and controlled adhesive thickness improved mechanical retention of the magnetic ring across thermal and mechanical stress tests. Traceability and SPC: Recipes, AOI images and dispense logs were integrated with the customer’s MES for lot traceability and statistical process control, enabling rapid root‑cause analysis when anomalies occurred. Recommendations for Thai Lines Create part‑specific 3D Z‑maps during FAT and save as MES recipes for quick changeovers. Use AOI thresholds tied to downstream fit/finish checks to close the quality loop. For mixed adhesives, store valve parameters and speed profiles as locked recipes to avoid operator drift. Conclusion  For Thai manufacturers producing wireless magnetic rings for high‑end smartphones, the PD500D delivers a robust path to automated 3D dispensing: combining five‑axis motion, sub‑micron repeatability, dual‑station inspection and MES traceability to boost efficiency and yield while protecting cosmetic and mechanical quality. Contact Mingseal for process trials and recipe qualification tailored to your ring geometries and adhesives.