Design and development of two-dimensional ultrasonic horn with B-spline curve based on orthogonal method.

The ultrasonic horn is the core component in ultrasonic-assisted micro-injection molding (UμIM). UμIM is a complex process with high temperature, high pressure, and high speed, and it is required that the ultrasonic horn should have a reliable performance to ensure the stability of its work. Therefore, the design of the ultrasonic horn is of great significance.

The Improvement Effect and Mechanism of Longitudinal Ultrasonic Vibration on the Injection Molding Quality of a Polymeric Micro-Needle Array.

A polymeric micro-needle array with high quality has been fabricated using a longitudinal ultrasonic-assisted micro-injection molding (LUμIM) method. To realize the practicability and stability in actual industrial processing, this paper is aimed at studying the improvement mechanism of ultrasonic vibration on the molding quality. The melt-filling process in the micro-needle array cavity is simulated, and the improvement effect of ultrasonic vibration is discussed.