Device for embedding threads in a rubber profiled element comprising a blunt-tipped rotary needle

Device for embedding an insert into a rubber profiled element in a given direction, having: at least one means for feeding a thread continuously, a moving support capable of moving on a structure in a rectilinear reciprocating movement between a raised position and a lowered position, at least one hollow needle having a channel of longitudinal axis XX' inside which the thread is able to run, which needle is fixed by one of its ends to the base of the moving support and has at its other end a tip capable of penetrating said rubber profiled element, a cutting means arranged on the support, having a blade capable of cutting off the thread leaving the tip of the needle on each cycle of the reciprocating movement of the needle, when said tip is in a raised position so as to release a given length of thread constituting a tail at the outlet of the needle. The moving support comprises means capable of rotating the needle about its longitudinal axis XX', and the tip of said needle is blunt.