61results about How to "Increase internal air pressure" patented technology

The invention relates to the technical field of cartons, and discloses a carton outer package label pasting detection device which comprises a first conveying belt, a second conveying belt and a carton body, the first conveying belt and the second conveying belt are located at the same height and located on the same straight line, and positioning frames are fixedly connected to the sides, close to each other, of the first conveying belt and the second conveying belt; by arranging the air guide mechanism, air is generated through the suction dual-purpose air pump and is fed into the air bag main body, at the moment, the internal pressure of the air bag main body is changed, the two sides of the outer wall of the carton main body are limited while the air bag main body expands, then the label existence detector detects a label on the outer wall of the carton main body, and the label existence detector detects the label on the outer wall of the carton main body. And then a second motor drives a second driving rod and a supporting frame to rotate by 90 degrees, at the moment, the carton body also rotates by 90 degrees, and the label located at the right angle of the carton body is also detected by a label existence detector.