| 摘要 |
A rotatable slotter head assembly (20) of the type used in the slotting of box blanks is provided which includes mechanism (28) permitting rapid and easy alteration of the circumferential position of the cutting knives, (26) carried by the assembly (20). Preferably, the assembly (20) includes a rotatable body (24) provided with an elongated, peripheral, knife-receiving slot (68) defined by fixed backing plates (58) and laterally shiftable locking plates (86-96). A plurality of selectively inflatable resilient bladders (74-78) are carried by the head assembly (20) and, when inflated, shift the associated movable locking plates (86-96) against the cutting knives (26), thereby firmly locking the latter in place. When knives adjustment is desired, one or more of the appropriate bladders (74-78) are deflated, the knives (26) are shifted as desired, and the bladders (74-78) are reinflated.
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