摘要:
A registration device for a sheet material article handler includes a movable backstop which sequentially engages a leading edge portion of a sheet material article as the article moves in a direction of movement along a path of movement in the sheet material article handler, thereby registering the sheet material article relative to the sheet material article handler. A driver is provided, the driver moving the backstop along an arcuate path in the direction of movement of the sheet material article from a first position out of the path of movement to a second position in the path of movement.
摘要:
A gripper assembly for a deceleration/acceleration drum is described which includes a pivot arm with a gripper seat and a gripper bar with a gripper and a pin assembly. The assembly further includes a first toggle link supported by the pivot arm about a first pivot points the gripper bar is able to partially rotate about the first toggle link about a second pivot point. The assembly also includes a second toggle link supported by the pivot arm which supports the pin assembly of the gripper bar.
摘要:
The present invention is directed to a method and apparatus for providing positive control of a printable medium in a printing system such that high speed processing of the printable medium can be achieved without damage to the product (e.g., printed signatures). Exemplary embodiments are directed to a carrier system which contacts (e.g., grips) the printable medium from both sides to provide positive control over the printable medium as it is transported from one area of positive constraint (e.g., a folding mechanism of a folder device) to another area of positive constraint (e.g., transport tapes and/or a signature deceleration device located downstream of the cutting cylinders).
摘要:
A transfer apparatus for a sheet material article trimmer includes a transfer element configured to grip the sheet material article and move the sheet material article in a transfer direction onto a side table of the sheet material article trimmer. A driver is provided, the driver being configured to move the transfer element at the same speed as the side table during period of time when the sheet material article is gripped by the transfer element and the side table is moving in the transfer direction.
摘要:
A method for registering a sheet material article in a sheet material article handler includes sequentially engaging, using a movable backstop, a leading edge portion of a sheet material article moving in a direction of movement of the sheet material article along a path of movement of the sheet material article in the sheet material article handler so as to register the sheet material article relative to the sheet material article handler. The backstop is moved along an arcuate path in the direction of movement of the sheet material article from a first position out of the path of movement to a second position in the path of movement using a driver.
摘要:
An infeed apparatus for a sheet material article trimmer includes a pusher element for moving a sheet material article to be trimmed on a front table of the trimmer and into engagement with a backstop of the front table. The pusher element is moved by a driver which moves the pusher element at the same speed as the front table for a period of time with the pusher element in engagement with a back edge portion of the sheet material article and the backstop in engagement with a front edge portion of the sheet material article. The period of time is at least as long as the time required for the front clamp to move through a distance corresponding to the difference in thickness between the thinnest sheet material article and the thickest sheet material article to grip the sheet material article against the front table.
摘要:
A method and device for diverting signatures is disclosed. A first cutting device partially cuts a web, while a second cutting device downstream of the first cutting device fully cuts the web so as to form a plurality of signatures. At least one first belt and at least one second belt hold the plurality of signatures, with the first belt having at least one first raised outer section and passing through at least part of the second cutting device, and with the second belt having at least one second raised outer section. The first and second raised outer sections interact to offset the plurality of signatures so as to define an alternating first stream and second stream of the plurality of signatures.
摘要:
A positive control signature transferring assembly, for use in a lower folder, transports and diverts signatures under positive control. The assembly has a first positive control deceleration device having grippers for transporting some of the signatures of a stream of signatures to a first delivery stream. The assembly has a gripper cylinder containing a plurality of grippers for gripping a leading edge and a trailing edge of each of the remaining signatures in the signature stream for transporting the signatures on the gripper cylinder. A second positive control deceleration device has grippers for transporting the remaining signatures released by the gripper cylinder to a second delivery stream. In this manner, the signatures are positively controlled at all times and alignment and fixed pitch errors are significantly reduced.
摘要:
A stream of signatures is delivered by a conveyer belt to an angled conveyer. The angled conveyor grips a set of signatures from the stream. The gripped set of signatures is transported by the angled conveyer to a third conveyer belt, and deposited on the third conveyer belt. By transporting the set of signatures at an angle, a lateral offset between the individual signatures within the set of signatures is created. A diverter on the third conveyer belt grips the laterally offset signatures, separating the signatures into substreams.
摘要:
The present invention is directed to providing a method and apparatus for diverting and separating sheets of printable material, such as signatures severed from a web, in a cost effective, efficient manner which does not create the potential for damage to the signatures or jamming of the press. Exemplary embodiments can implement a signature diversion and separating in a single step, without reorienting the signatures. Thus, for example, where the signatures include a folded edge, the orientation of that folded edge can be maintained throughout the diverting and separating process.