| 摘要 |
898,733. Making cartons. FMC CORPORATION. Feb. 4, 1960 [Aug. 17, 1959], No, 3990/60. Class 18. A carton-forming machine comprises a frame 22, 24, 26 and dies 150, 152, 154, 156 for bending flaps C2-C5 of a blank as in Fig. 8, each of which dies partly defines an opening corresponding to the shape of the blank base panel C1 and is adjustable to accommodate different sizes of blanks, and means e.g. a reciprocating suction head B for moving the blanks through the opening so that the dies bend the flaps C2-C5 normal to the base panel Cl. The dies 150, 152, 154, 156 comprise T- shaped members sliding in grooves on the upper surface of a top casting 28, members 150 and 154 being set lower than the other two; slots and locking bolts fix each member in the desired position e.g. slot 184 in leg 180 of the member 150 and bolt 186 as indicated on a scale 240 and index mark 242. Bolts project through blocks to engage in corresponding slots in adjacent cross bars of the T-shaped members e.g. block 200 mounted on the cross bar 182a has a bolt 202 projecting through slots 190 and 192a. and upwardly projecting plates 220, 222, 224, 226 are fixed to these blocks 200, 212, 214, 216 to define the blank magazine A. T- shaped blank supports 254, 267, 268, 269 are slidably mounted upon spacer blocks fixed to the upper surface of each die member and are provided with chamferred inner edges on which are supported the blanks in the magazine A. In operation, the suction head B, provided with suction cups 50 connected to vacuum system H, grips the lowermost carton blank C in the magazine A and draws it down through the bending dies 150, 152, 154, 156 so that the flaps C2-C5 are bent normal to the base panel C1. As the blank continues downwards, the flaps are further bent over by mechanism consisting of four identical systems 280, 282, 284, 286, each one comprising a rotatable shaft supported by plates depending from each end of the die cross-bars and provided with three bending fingers operated by an adjustable solenoid-controlled assembly. On further descent of the suction head B, plates 350 and 352 strip therefrom the blank C while an air blast from nozzle 72 blows it into the discharge shoot F. Power is provided by a motor 66, the various operations being controlled by a system of solenoids and microswitches. |
