US 10,315,449 B2 · Thread sewing machine

Abstract

A method for operating a thread sewing machine to process printed sheets to form book blocks includes transporting the printed sheets lying astride a first transport section of a transport system. The first transport section is operated by a conveying mechanism. The conveying mechanism is operated with a speed change that depends on a direct sequence of different sheet lengths of the printed sheets. The printed sheets are fed from the first transport section to a second transport section of the transport system. The second transport section is operated by a conveying device having at least one of a controller and an operative connection to a stop so as to ensure an individual positioning of a sub-format printed sheet relative to a standard-format printed sheet. The printed sheets are fed from the second transport system to a downstream sewing station.

Claims23

Dependent claims

A method for operating a thread sewing machine to process printed sheets to form book blocks, the method comprising:

transporting the printed sheets lying astride a first transport section of a transport system, the first transport section being operated by a conveying mechanism, the conveying mechanism being operated with a speed change that depends on a direct sequence of different sheet lengths of the printed sheets;
feeding the printed sheets from the first transport section to a second transport section of the transport system, the second transport section being operated by a conveying device having at least one of a controller and an operative connection to a stop so as to ensure an individual positioning of a sub-format printed sheet relative to a standard-format printed sheet;
and
feeding the printed sheets from the second transport section to a downstream sewing station,
wherein the speed change includes an acceleration of the sub-format printed sheet which is transported in an intermediary manner along the first transport section and a delay of the standard-format printed sheet which is transported along the first transport section after the sub-format sheet.

2 more elements

A method for operating a thread sewing machine to process printed sheets to form book blocks, the method comprising:

transporting the printed sheets lying astride a first transport section of a transport system, the first transport section being operated by a conveying mechanism, the conveying mechanism being operated with a speed change that depends on a direct sequence of different sheet lengths of the printed sheets, wherein a further detecting unit within the first transport section carries out the following steps:
a) triggering an interim acceleration of an entrainer chain belonging to the first transport section in case of transporting a sub-format printed sheet,
b) inserting an idle cycle without feeding of one of the printed sheets following the sub-format printed sheet, and
c) triggering a delay of the entrainer chain in case of a standard-format printed sheet following the idle cycle;
feeding the printed sheets from the first transport section to a second transport section of the transport system, the second transport section being operated by a conveying device having at least one of a controller and an operative connection to a stop so as to ensure an individual positioning of the sub-format printed sheet relative to the standard-format printed sheet;
and
feeding the printed sheets from the second transport section to a downstream sewing station.

4 more elements

A method for operating a thread sewing machine to process printed sheets to form book blocks, the method comprising:

transporting the printed sheets lying astride a first transport section of a transport system, the first transport section being operated by a conveying mechanism, the conveying mechanism being operated with a speed change that depends on a direct sequence of different sheet lengths of the printed sheets, the first transport section being operated by first and second entrainer chains, the first entrainer chain being used to transport a standard-format printed sheet and the second entrainer chain being used to transport a sub-format printed sheet;
feeding the printed sheets from the first transport section to a second transport section of the transport system, the second transport section being operated by a conveying device having at least one of a controller and an operative connection to a stop so as to ensure an individual positioning of the sub-format printed sheet relative to the standard-format printed sheet;
and
feeding the printed sheets from the second transport section to a downstream sewing station.

1 more element

Dependencies are inferred from the claim text.

Thread sewing machine

Life of this patent

Thread sewing machine

Life of this patent

Abstract

Claims23