Patent ID: 6694718
Filing Date: 2004-02-24
Classification: B65H

Abstract:
A yarn splicing device for producing a knot-free yarn connection in an elastic yarn, comprising a splicing body formed with a splicing channel for receiving an upper yarn and a lower yarn to be spliced with one another, at least one inlet opening into the splicing channel for injecting compressed air thereinto for pneumatically splicing constituent fibers of the yarns, a clamping device for clamping the upper yarn adjacent one end of the splicing channel, a clamping device for clamping the lower yarn adjacent an opposite end of the splicing channel, a cutting device for cutting an end of the upper yarn to a defined length adjacent the opposite end of the splicing channel, a cutting device for cutting an end of the lower yarn to a defined length adjacent the one end of the splicing channel, a preparatory nozzle adjacent the upper yarn cutting device for preparing the end of the upper yarn and for pneumatically holding the upper yarn end while being prepared, a preparatory nozzle adjacent the lower yarn cutting device for preparing the end of the lower yarn and for pneumatically holding the lower yarn end while being prepared, a restraining device arranged between the upper yarn clamping device and the upper yarn preparatory nozzle for pneumatically retarding contraction of the upper yarn end up to the upper yarn preparatory nozzle after cutting of the upper yarn end, and a restraining device arranged between the lower yarn clamping device and the lower yarn preparatory nozzle for pneumatically retarding contraction of the lower yarn end up to the lower yarn preparatory nozzle after cutting of the lower yarn end.