| 摘要 |
The disclosure relates to a stacker tyer for stacking newspapers received in a shingled stream from a printing press. A single centrally located stacker mechanism is flanked by a pair of compensators and outside compensators are a pair of tyers. Stacks are built in the stacker and moved laterally first to a compensator and then to a tying mechanism. Outside the tying mechanism are located a pair of delivery mechanisms which deliver the tied stack for further processing. The stacker is able to form either short stacks (bundles) or tall stacks (logs). In the case of bundles, the bundles may be either compensated or uncompensated; compensated logs are not built. The tyers are able to tie either a single strap around the midline of a stack or a pair of parallel straps offset to opposite sides of the midline of a stack using a single tie head. Moreover, the tyers are able to tie either bundles or logs. A shuttle mechanism is used to move the completed stacks from the stacker to one or the other of the compensators and from there to the adjacent tyer. A double-throw crank having a pair of connecting rods which are selectively connectible to the shuttle moves the stacks in the above mentioned manner. The shuttle mechanism supports the leading and trailing edges of each stack as it is moved, and the back side and bottom of each stack is supported by fixed bottom supports and back supoports. Therefore, the back, two sides and bottom of each stack are supported during movement, and the stacks do not require realignment upon arrival at either the compensator sections or the tying stations. |
