Cooling arrangement in a folding assembly and cooling process
AssigneeMAN Roland Druckmaschinen AG
InventorErich Wech
Life of this patent
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Abstract
A folding device in which printing-material webs are cooled in an effective manner includes guide rollers and/or feed rollers designed as cooling rollers. Alternatively or in conjunction with the cooling rollers, there are cooling arrangements in the folder superstructure and compressed cooling air flows from these cooling arrangements onto the surfaces of the printing-material webs.
Claims13
A web-fed rotary printing machine including a printing unit, a dryer, and a cooling unit, and a folding device arranged downstream of the cooling unit, said folding device comprising:
- a turner-bar structure;
- a folding unit;
- and
- plurality of rollers for guiding and feeding a printing-material web along a path through said turner-bar structure and to said folding unit, at least one of said plural rollers comprising a coolant roller operatively designed for conducting a coolant medium, wherein said folding device stands apart from the cooling unit in the web-fed rotary printing machine so that said coolant roller of said folding device effects a second step of a cooling process of the printing-material web.
In a web-fed rotary printing machine including a printing unit, a dryer, and a cooling unit, a folding device arranged downstream of the cooling unit and comprising:
- a turner-bar structure;
- a folding unit;
- a plurality of rollers for guiding and feeding a printing-material web having two opposing sides along a path through said turner-bar structure and to said folding unit;
- and
- a cooling arrangement operatively arranged in said folding device along the path of the printing-material web for feeding a first cooling medium to said two opposing sides of said printing material web.
A cooling process for cooling a printing-material web that has been printed in printing units of a web-fed printing machine, dried in a dryer and preliminarily cooled in a cooling unit, comprising the steps of:
- receiving the printing-material web from the cooling unit at a folding device and guiding the printing-material web received from the cooling unit through the folding device of the web-fed printing machine;
- and
- performing a second cooling step of a cooling process by cooling the printing-material web within the folding device using a cooling arrangement arranged in the folding device comprising one of a cooling roller for conducting a first cooling medium and a cooling arrangement for feeding a second cooling medium to the printing-material web, such that no printing ink comes away from the printing material web in the folding device.
Dependencies are inferred from the claim text.