Glueless pocketed spring unit construction

摘要

Methods and systems for no-glue pocketed spring unit construction. Rows of pocketed springs, preferably arranged into modules of more than two pocketed springs surrounding a central hole, are ultrasonically welded together when paired vibrating probes and anvils press layers of pocketed spring fabric from the rows of pocketed springs together and a welding pulse is transmitted to the vibrating probe.

主权项

1. A method for glueless assembly of cushioning units, comprising:
putting openings of first and second rows of pocketed spring modules onto first and second rows of locator pins respectively; wherein individual ones of said pocketed spring modules comprise more than two pocketed springs which together surround one of said openings; and wherein individual ones of said pocketed springs each comprise a coil spring inside a pocket made of a flexible material; transferring said first and second rows of pocketed spring modules from said first and second rows of locator pins onto a double row of probe/anvil pairs; moving the probe and anvil of ones of said probe/anvil pairs together, and welding said first and second rows of pocketed spring modules together by applying power to said probes; and repeating said moving and welding steps on said first and second rows of pocketed spring modules at multiple different coaxial positions, to thereby form welding at multiple vertical positions on said first and second rows of pocketed spring modules.