Patent ID: 7766217
Filing Date: 2010-08-03
Classification: B21C,C21D

Abstract:
1. A method for managing the feed of a new coil into a continuous inline processing plant for making a band-type product from metal coils, said plant being supplied with successive bands and including means for controlling the continuous running of the band successively into an inlet section, an upstream accumulator, a processing section, a downstream section and an outlet section, the connection of the tail of a first coil when completely unwound with the head of a consecutive next coil being carried out in the inlet section of the plant in two successive stage cycles, respectively a first preparation cycle for preparing the ends, respectively said tail of said first coil and said head of said consecutive next coil for their junction thereof and a second junction cycle for joining both facing edges of said ends, wherein the running of the band is stopped or, at least, slowed down in the inlet section for a period of time necessary to carry out all the connection operations, and the processing section is supplied, during the stoppage time, with a band length set aside beforehand in the upstream accumulator for carrying on the process at a normal running speed, characterized in that joining the facing edges of said ends is performed in at least two portions of the inlet section, respectively a first portion and a second portion, between which is located an intermediate accumulator for setting aside a variable band length, and that the time period necessary to perform all the connection operations of said ends is divided into at least two time periods respectively a first time period corresponding to the first preparation cycle and to a first phase of the second junction cycle of the facing edges of said ends, and a second time period corresponding to a second phase of the second junction cycle, said both time periods being separate by a time interval of variable duration corresponding to the running of the band length set aside in the intermediate accumulator wherein both the first phase and the second phase of the second junction cycle comprise welding.