Achieving uniform and precise adhesive coating of sealing resin on connectors requires high-precision dispensing technology, equipment selection, and process optimization. This, combined with the connector’s structural characteristics and sealing requirements, necessitates breakthroughs in core technologies and system collaboration to achieve precise control of adhesive quantity and consistent coating. The following details the implementation path from four dimensions: technical solutions, core equipment, process optimization, and application effects:
Core Technology Support: Precise Control of Adhesive Uniformity and Stability
● Non-Contact Spray Dispensing Technology
a.Technical Principle:Using Piezoelectric Injection glue dispensing valve or Pneumatic injection glue dispensing valve, the adhesive is atomized or quantitatively sprayed onto the connector surface under high pressure, eliminating contact with the workpiece and avoiding scratches to precision connector components. Piezoelectric spray valves can achieve high-frequency spraying of 300 dots/second, suitable for medium to high viscosity sealing resins, and particularly suitable for scenarios with small connector pin pitch and sensitive surfaces.
b.Precise Control:Through air pressure regulation, screw pump drive, or piston push, the adhesive quantity error is precisely controlled within ±3%, and the adhesive dot diameter matches the connector pitch, ensuring uniform and deviation-free coating.
●High-Precision Needle and Fluid Control Technology
a.Needle Design: Utilizes a customized high-precision dispensing needle, optimizing the internal flow channel through precision machining technology to eliminate unnecessary tubing resistance, prevent solid particle retention, and ensure consistent needle outlet and body diameter. This achieves smooth adhesive flow, reduces solid-liquid separation, and suppresses coating separation by up to 80%, solving the problems of clogging and stringing in high-viscosity sealing resins.
b.Dynamic Adhesive Quantity Adjustment:Employs PWM functionality to precisely control the opening and closing time of the dispensing valve, combined with a screw pump PID control system, dynamically adjusting the dispensing quantity and speed to adapt to the adhesive application needs of different parts of the connector, ensuring consistent adhesive line width and thickness.
Fully Automatic 3-Axis Potting Machine SEC-S3030B & SEC-S3030C
The work of the glue potting machine mainly depends on air pressure control. Through the air pressure device, the glue is pressed out by pressure, and the size of the glue is controlled by the pump body. At the same time, the robotic arm is responsible for controlling the moving position of the glue discharge to achieve fully automated operation. This automated operation not only solves the problem of low labor efficiency, but also greatly improves the quality of production.
b.High-Efficiency Production: Dispensing speed can reach 5-6 seconds/cycle. The daily output of a single machine is equivalent to 4-6 workers, while reducing inconsistent glue dosage caused by human operation and improving connector sealing yield.
https://secondintelligent.com/product/vacuum-potting-machines/
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