APPARATUS FOR THE ERECTION OF DISPLAY CONTAINERS OR TRAYS

摘要

1468818 Erecting display and transport containers P E ELFORD 13 June 1974 [14 June 1973] 28384/73 Heading B5D [Also in Division B8] An apparatus for electing a display and transport container blank, Fig. 3, comprises a central crease breaker 131 which can be raised to fold parts 10A, 10B of the blank about a crease line 11 while end portions 12, 13 of the blank are held in a common plane, and a forming head 57 which can move the thus folded blank downwardly through a die to erect edge parts 26, 27, 34a, 261, 271 and 34a1. The forming head 57 includes a plate 70 which defines a recess and a blind slot for accommodating portions of the folded parts 10A, 10B. Edge portions 76, 77 of the plate 70 hold the blank end portions 12, 13 in the common plane. The folding about the crease line 11 may be assisted by claws, such as 97, which engage opposite edges of the blank and move inwardly. During the folding of the parts 10A, 10B, side walls 14-17 which have been folded upwardly by vertically reciprocable members 100, (101) Fig. 7 (not shown) forming parts of opposed sides of the die, are retained in their erect condition by plates (85, 86) Fig. 5 (not shown) carried on the forming head 57. A support 120 which accommodates the lowered crease breaker 131, includes a platform 125 for supporting panels 20, 201 of the blank during its passage through the die. Upon downward movement of the forming head, end flaps 36, 37, 361, 371 are first folded upwardly by corner members, such as 108, 109, and then the edge parts 26, 27, 34a, 261, 271 and 34a1 are erected by the walls of the die. Fixed plates 134, (135) Fig. 7 (not shown), a release plate 137, and a pusher plate 136 hold the blank in its erect condition when the platform 125 is in its lowermost position 1251. Members 147, 148, (149, 150) Fig. 7 (not shown), fixed on rotatable shafts 145, (146) are then rotated either to fold over locking flaps 28, 29, 281, 291 and insert tongues 32, 33, 321, 331 into apertures 34, 35, 341, 351 in the blank or to compress glue joints between parts of the blank. The completed container is pushed on to a deadplate 127 by the pusher plate 137 upon retraction of the release plate 137.