| 摘要 |
The present invention provides a method of and apparatus for automatically controlling longitudinal transfer of a plurality of film strips in a bag-making machine, packaging machine, or the like. One of the most important features of the method is that, when one of the strips goes ahead of the other strip or strips, the feeding of all the strips is stopped by braking an intermittent conveyor means, and the leading preceding strip is braked during the next feeding action of the conveyor means. The apparatus is provided with sequential control units, including photoelectric detectors, for carrying out the method. |
