Interesting post. Machines like this show how much engineering sits behind everyday products. The timing between wire feed, coiling, and stitching looks very precise.

I’m curious about long-term upkeep. Anyone know how these machines handle jams or wear parts over time?

Nice to see more manufacturing content on HN.

Kimkoo offers a full range of pocket spring machines, including 130, 160, and 180 springs/min pocket spring coiling machines—each available in single or dual-wire configurations. The 160 model also features a high compression ratio version for denser spring production. Kimkoo’s pocket spring assembly machines include both automatic and semi-automatic options: the automatic assembly machine can connect with 1, 2, or up to 3 pocket spring coiling machines to form a flexible pocket spring production line, while the semi-automatic version connects with a single coiling machine.