DEVICE FOR FOLDING SEAM FLAP AND APPLYING GLUE TO THE SAME

PURPOSE:To perform glue application efficiently and assuredly by a method wherein a folding device and glue applying device integrally descend, and first, by the folding device, a seam flap is folded, and while the seam flap is held as it is, glue application is started by the glue applying device. CONSTITUTION:An air cylinder 20 operates, and a glue applying mechanism and a folding plate 28 are lowered. A tip taper part 28b of the folding plate 28, which is attached on the lowest part of the air cylinder 20, comes into contact with seam flaps 50d, 52e of both packaging boxes 50, 52. The folding plate 28 gradually becomes horizontal, accompanying with the descent of a bin 42 side, and following to the taper part 28b, a parallel part 28a also enters a gap between the seam flaps 50d, 42e, and bends these seam flaps 50d, 52e until they become approximately horizontal. A limit switch 44 senses that the folding plate 28 has become approximately horizontal, and stops the air cylinder 20. Under this condition, an adhesive is sprayed with a hot melt gun 34, and at the same time, the glue applying mechanism and the folding plate 28 are horizontally moved by a rodless cylinder 10.