| 摘要 |
1. A foil feed unit for a tube manufacturing machine, having at least two winding spindles (10, 72) each receiving a foil-strip delivery spool (12, 74), having a strip feed device (14) for withdrawing the foil strip (16) from one of the delivery spools (12) at a time and conveying it further to the tube manufacturing machine, having a clamping device (46, 80) for clamping the end of the strip and the beginning of the following strip, having a sensing device (20) adapted to sense the foil strip (16) withdrawn from the particular delivery spool (12) which is in operation in order to stop the foil strip (16) temporarily, at least in the region of the clamping device (46, 80), depending on the response of the sensing device (20), having a controllable cutting device (40) and a controllable connecting device (88) to connect the end of the strip to the beginning of the following strip, characterised in that the sensing device (20) is a foil-thickness measuring device delivering an electrical signal when it responds. |
