Comprehensive Analysis of Aluminum Cup Manufacturing — Molds Chapter

Every cup holds a story, and life is filled with warmth. Hello everyone, and welcome to "Dong Dong's Cup Talk" Many friends already know that I primarily specialize in producing various types of stainless steel cups and plastic cups. https://www.umbottle.com/ProductsDetail-VB-10103.htmlAlthough I previously shared an in-depth analysis of glass cups, it was made possible with the help of friends. If you encounter any issues when purchasing or developing stainless steel or plastic cup products, feel free to message me privately. I am more than happy to provide you with dedicated assistance.

Perhaps due to the season or the arrival of another peak sales period, I have recently received numerous inquiries from around the world about purchasing aluminum cups. https://www.umbottle.com/ProductsDetail-VB-10103.htmlThis inspired me to share some insights about aluminum cups. Considering my limited expertise in this area, I have invited Mr. Xuan, who has nearly 20 years of experience in operating an aluminum cup factory, to elaborate on the intricacies of aluminum cup manufacturing.

Molds: The "Critical Factor" in Aluminum Cup Quality

Design Essentials:

- Taper: Deep-drawing molds require a 1°-2° demolding taper.

- R-angle: The punch head R-angle should be ≥6t (material thickness), https://www.umbottle.com/ProductsDetail-VB-10103.htmlthe die entry R-angle ≥8t, and the corner R-angle ≥10t.

- Venting: Vent grooves/holes (depth 0.03-0.05mm) must be added at critical positions of the die.

Failure Case:

During the production of a 2L large water bottle (wall thickness 1.5mm), the small R-angle of the die (only 5mm) and lack of venting caused extensive cracking at the bottom, resulting in a scrap rate of 30%. After improvements, https://www.umbottle.com/ProductsDetail-VB-10103.htmlthe R-angle was increased to 12mm and vent holes were added, resolving the issue.