Compression Molding of Multi-Part Phasing Plugs

Sound Phasing Plug Compression Molding

(click on thumbnail to enlarge)

The project highlighted here demonstrates the diversity of Globe Plastics manufacturing capabilities, and their ability to apply precision molding processes to complex, precision applications. Globe was recently contracted by an audio industry customer to fabricate multi-part phasing plugs, which are designed to enhance sound performance. A 5-cavity family mold was usedf for this high volume application to directly replace a die cast process.

AcoustaComp® composite molding compound was molded in an advanced 150 ton compression molding machine; in conjunction with precision molds, the ±0.002" tolerances and 0.0015" shrinkage allowances were easily maintained. The parts were then bonded and assembled robotically and finished utilizing precision CNC machining to maintain a critical feature tolerance of ±.0005. Thorough in-process testing and inspections were carried out, including CMM, optical comparator, and drop indicators. Measurements of the semi-gloss finished part were 3" in diameter, 2" in height, and a weight of 220 grams, with wall thickness that ranged from 0.375" to 0.050". Turnaround time for this project was 4-6 weeks for parts, with 10,000 units shipped annually to the customer in Mexico.

For more details about this phasing plug project, or the other high performance multi-operational composite molding capabilities available, please see the table below or contact Globe directly.

Multi-Part Phasing Plug Project Details