High - Speed Precision Dispensing Machine D450S: Core Equipment For Solving Color Difference In LED Displays - Haichen SMT

D450S High – speed Dispensing Machine – Overcoming LED Screen Color Difference with Micron – level Precision

I. Core Advantages: Perfect Integration of High – precision Spraying and Efficient Production

Micron – level Precision Control to Address the Root Cause of Color Difference

Adopts XYZ three – axis servo drive system (Panasonic servo motor + ball screw) with positioning accuracy of ±0.02 mm and repeatability of ±0.02 mm. It can precisely spray inks with a width of 2 – 30 mm, suitable for ultra – small pitch scenarios of LED displays with pixel pitch ≤0.9 mm.
Equipped with Japanese SMC cylinder and high – precision atomizing spray valve, the glue volume is stably controlled through fine – tuning of air pressure regulator (0.4 – 0.6 MPa), ensuring uniform ink coverage on the PCB background to eliminate color deviation caused by substrate reflection.

High – speed Production for Large – scale Needs

The maximum moving speed of X/Y axis is 800 mm/sec, and Z axis is 300 mm/sec. With chain drive conveying system (speed 2 – 5 m/min), it can achieve the spraying efficiency of over 1,000 PCBs per hour, meeting the mass production requirements of LED displays.
Automatic soaking glue gun design: When there is no workpiece, the glue gun automatically soaks to prevent drying, reducing downtime caused by glue curing and blocking the nozzle, and increasing the operation rate by more than 30%.

II. Intelligent System Design: Full – process Reliability from Hardware to Software

Industrial – grade Hardware Architecture with Excellent Anti – interference Ability

Control system: Advantech industrial computer + high – speed motion control card, with self – developed dispensing software, supporting trajectory programming and compatible with Windows system. It can store more than 100 groups of process programs and call different PCB spraying schemes (such as different parameters for COB modules and SMD packaging) with one click.
Frame structure: 80*60 mm thick square tube welded + stress relief treatment, with strong rigidity, small temperature deformation; the workbench is leveled by gantry milling, with stainless steel protective plate and electrostatic powder coating, anti – corrosion and ensuring the stability of the motion platform.

Humanized Function Design to Reduce Operation Threshold

Programming method: supporting keyboard and mouse operation and trajectory guidance. Operators can select different spray guns according to the spacing of PCB components and automatically adjust the component height (maximum 100 mm), completing parameter setting without professional engineers.
Conveying system: brushless DC motor drives 25B type stainless steel chain, width automatically adjusted (50 – 450 mm), equipped with protective strips to prevent ink from polluting the chain, suitable for various sizes of PCB (thickness 0.5 – 4.0 mm).

III. Technical Parameters Addressing LED Screen Production Pain Points

Key Indicators	Parameters	Solutions to LED Screen Color Difference
Positioning Accuracy	±0.02 mm	Ensure precise ink coverage of pixel gaps, forming a uniform “virtual mask” to block stray light crosstalk.
Coating Thickness Control	10 – 200 μm	Adapt to different ink viscosity requirements, avoiding reflection differences caused by uneven coating thickness.
Air Pressure Stability System	0.4 – 0.6 MPa fine adjustment	Ensure the consistency of glue volume and reduce the color deviation rate of the same batch of PCBs.
Anti – clogging Design	Automatic soaking glue gun	Avoid spraying missing caused by nozzle drying, ensuring the uniformity of ink color on the whole screen.

IV. Application Scenarios: Full Scenario Coverage from Small – pitch Displays to COB Packaging

Small – pitch LED displays: Precisely spray black ink into the pixel gaps of PCB to form an integrated light – shielding structure, solving the light scattering problem of P2.0 or smaller pitch and improving the contrast (ΔE<1).
COB packaging modules: Spray graphic ink on the chip integration surface to replace the traditional mask, eliminate the color difference of module seams, and optimize heat dissipation (optional thermal conductive ink spraying function).
Flexible screens and special – shaped substrates: Support edge clearance control of ≥5 mm for PCB, adapt to ink spraying on arc and flexible substrates, and expand the application scenarios of LED screens (such as wearable devices, arc advertising screens).

V. Conclusion: Breaking through the Color Difference Bottleneck with Technological Innovation

D450S high – speed dispensing machine has become the core equipment for solving the color difference of LED displays with its micron – level control precision, industrial – grade stability and flexible production capacity. The full – chain optimization from hardware architecture to software system not only meets the requirements of high – precision spraying, but also reduces production costs through automated design. Whether for large – scale mass production or customized R & D, D450S can provide reliable guarantee for the color consistency of your LED screen.

Contact us now for a customized solution → Click to learn about equipment demonstrations and process verification services.

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