Industry applications 2025.10.14
Large-Capacity Metering + Rotary Valve Technology: Solving Automotive Glass Dispensing Challenges
Large-Capacity Metering + Rotary Valve Technology: Solving Automotive Glass Dispensing Challenges
In the automotive manufacturing process, the dispensing process for windshields and triangular windows directly impacts vehicle sealing performance and safety. This seemingly simple procedure actually involves highly technical process requirements, making perfect dispensing a critical focus in automotive manufacturing .Core Challenges in Automotive Glass Dispensing: Continuous Uniformity and Precision MoldingAutomated dispensing for automotive windshields and triangular windows faces two major technical challenges: it must achieve a single-loop continuous bead without interruption, as any break affects the sealing effect; and the adhesive bead cross-section must remain uniform to ensure the strength of the sealed structure after compression .Specifically, the adhesive bead typically needs to achieve a triangular profile with a base width of 8-12mm and a height of 12-14mm. After compression, the adhesive layer thickness must stabilize within the 4-6mm range. These precise parameter requirements guarantee perfect integration between the glass and the vehicle body, ensuring both sealing performance and sufficient structural support .Rotary Valve Technology: Solving the Challenge of Irregular Contour DispensingFor challenging contours like triangular windows, rotary dispensing valve technology offers an innovative solution. This technology can dynamically adjust the dispensing angle and synchronize in real-time with the robot's path, effectively solving the problem of bead breakage at corners .During the process, the robot moves along a predetermined path while the rotary valve adjusts the dispensing direction in real-time based on the path's curvature. This ensures the continuity of the adhesive bead and consistency of its cross-section at any bend or corner, significantly improving dispensing quality through this coordinated approach .High-Precision Metering System: The Key to Ensuring Dispensing QualityCentron has customized a high-precision servo metering system for this application. Equipped with a large-capacity 1000cc adhesive storage unit, this system works in concert with the rotary valve and robot to ensure a continuous and stable adhesive supply, preventing dispensing quality issues caused by supply interruptions .The system achieves a dispensing accuracy of ±1% and millimeter-level path deviation control, ensuring each segment of the adhesive bead meets precise process requirements . This high-precision control capability provides reliable assurance for zero-defect glass sealing, substantially enhancing overall vehicle manufacturing quality .The advancement in automotive windshield dispensing technology reflects the continuous pursuit of precision control and technological innovation in modern manufacturing. By perfectly integrating rotary valve technology with high-precision metering systems, it not only solves long-standing industry challenges but also provides strong support for improving overall vehicle quality . As automotive manufacturing processes continue to evolve, this high-precision, high-efficiency dispensing solution is expected to find applications in more areas, injecting new momentum into high-quality manufacturing development .
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