Apparatus for identifying and gluing the final edge of a log material

An apparatus for identifying and gluing a final edge of a log of web material, comprising:

• an introducing track for introducing a plurality of logs of web material into the apparatus;
• an introducing means having a plurality of blades, wherein each blade is loaded with one of the plurality of logs of web material at a loading position adjacent to the introducing track and unloads the log of web material at a unloading position;
• a lower belt disposed on a first lower roller and a second lower roller, wherein the first lower roller is disposed adjacent to the unloading position for the lower belt to bear the log of web material unloaded by the introducing means;
• a gluing module disposed adjacent to the second lower roller for gluing the log of web material, wherein there is a gap between the gluing module and the second lower roller;
• an upper belt disposed on a first upper roller and a second upper roller, wherein the upper belt is located above the lower belt and the gluing module and moves in the same speed and direction with the lower belt;
• an upper unwinding roller disposed coaxially with the first upper roller with a diameter slightly greater than a diameter of the first upper roller;
• a lower unwinding roller disposed under the upper unwinding roller with an upper edge slightly higher than the lower belt, wherein the lower unwinding roller rotates in the same speed and direction with the upper unwinding roller;
• a first unwinding nozzle disposed near the upper unwinding roller with a blowing direction tangent to the log of web material when the log of web material touches the upper unwinding roller;
• an unwinding detector disposed behind the upper unwinding roller for detecting the final edge of the log of web material;
• an unloading track disposed adjacent to the gluing module for unloading a glued log of web material;
• and
• a gap nozzle disposed above the second lower roller with a blowing direction towards the gap.