Printing press having a device for controlling the air in a sheet feeder
First Claim
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1. A printing press comprising:
- a frame;
a plate cylinder rotatably mounted on said frame, said plate cylinder for positioning a printing plate thereon;
dampening means for applying dampening medium to said printing plate;
an ink reservoir for holding a supply of ink;
an inking mechanism for transferring the ink between said ink reservoir and said plate cylinder at least during operation of said printing press;
said inking mechanism comprising a plurality of inking rollers, at least one ink fountain roller, and at least one ink transfer roller for transferring ink between said ink fountain roller and at least one of said plurality of inking rollers;
sheet feeding means for feeding sheets of printing stock into the printing press from a stack of printing stock, the stack having a top for supplying sheets therefrom;
a rubber blanket cylinder i having a rubber blanket disposed thereabout for receiving an ink impression from the plate cylinder;
a sheet drum for receiving sheets being fed for printing the ink impression of the rubber blanket onto the sheets;
sheet delivery apparatus for receiving printed sheets and stacking the printed sheets;
said sheet feeding means comprising;
means for providing input air to an area adjacent the stack of printing stock, said means for providing input air comprising a first air passage for conducting input air to the area adjacent the stack of printing stock;
means for removal of exhaust air from an area adjacent the stack of printing stock, said means for removal of exhaust air comprising a second air passage for conducting exhaust air away from the area adjacent the stack of printing stock;
said first air passage being separate from and isolated from said second air passage;
means for controlling air flow through said means for providing input air and said means for removal of exhaust air;
said means for controlling comprising valve means;
said valve means comprising;
a first valve portion for controlling flow of air through said first air passage, said first valve portion having at least an open configuration for passage of air therethrough and a closed configuration for blocking passage of air therethrough;
a second valve portion for controlling flow of air through said second air passage, said second valve portion having at least an open configuration for passage of air therethrough and a closed configuration for blocking passage of air therethrough;
at least one solid element connecting at least a portion of said first valve portion to at least a portion of said second valve portion, said at least a portion of said first valve portion and said at least a portion of said second valve portion being connected by said at least one solid element for substantially simultaneous movement of both of said at least a portion of said first valve portion and said at least a portion of said second valve portion from at least the closed configuration to the open configuration for substantially simultaneous providing of air to the area adjacent the stack and removing of air from the area adjacent the stack, and for substantially simultaneously moving both of said at least a portion of said first valve portion and said at least a portion of said second valve portion from at least the open configuration to the closed configuration to substantially simultaneously stop providing of air to the area adjacent the stack and removing of air from the area adjacent the stack; and
single operating means for operating all of;
said at least a portion of said first valve portion, said at least a portion of said second valve portion, and said at least one solid element, substantially simultaneously.
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Accused Products
Abstract
A printing press for printing an image on sheets of printing stock can generally have a sheet feeder for separating and at least initiating start of transport of the separated sheet into the printing press. Such a sheet feeder can have a device for controlling feeder blowing air and feeder suction air, wherein the control device can have respective valves for accurately controlling the amount of blowing air and suction air. In addition, the amount of blowing air can be essentially exactly adjustable via the control console of the machine.
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Citations
20 Claims
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1. A printing press comprising:
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a frame; a plate cylinder rotatably mounted on said frame, said plate cylinder for positioning a printing plate thereon; dampening means for applying dampening medium to said printing plate; an ink reservoir for holding a supply of ink; an inking mechanism for transferring the ink between said ink reservoir and said plate cylinder at least during operation of said printing press; said inking mechanism comprising a plurality of inking rollers, at least one ink fountain roller, and at least one ink transfer roller for transferring ink between said ink fountain roller and at least one of said plurality of inking rollers; sheet feeding means for feeding sheets of printing stock into the printing press from a stack of printing stock, the stack having a top for supplying sheets therefrom; a rubber blanket cylinder i having a rubber blanket disposed thereabout for receiving an ink impression from the plate cylinder; a sheet drum for receiving sheets being fed for printing the ink impression of the rubber blanket onto the sheets; sheet delivery apparatus for receiving printed sheets and stacking the printed sheets; said sheet feeding means comprising; means for providing input air to an area adjacent the stack of printing stock, said means for providing input air comprising a first air passage for conducting input air to the area adjacent the stack of printing stock; means for removal of exhaust air from an area adjacent the stack of printing stock, said means for removal of exhaust air comprising a second air passage for conducting exhaust air away from the area adjacent the stack of printing stock; said first air passage being separate from and isolated from said second air passage; means for controlling air flow through said means for providing input air and said means for removal of exhaust air; said means for controlling comprising valve means; said valve means comprising; a first valve portion for controlling flow of air through said first air passage, said first valve portion having at least an open configuration for passage of air therethrough and a closed configuration for blocking passage of air therethrough; a second valve portion for controlling flow of air through said second air passage, said second valve portion having at least an open configuration for passage of air therethrough and a closed configuration for blocking passage of air therethrough; at least one solid element connecting at least a portion of said first valve portion to at least a portion of said second valve portion, said at least a portion of said first valve portion and said at least a portion of said second valve portion being connected by said at least one solid element for substantially simultaneous movement of both of said at least a portion of said first valve portion and said at least a portion of said second valve portion from at least the closed configuration to the open configuration for substantially simultaneous providing of air to the area adjacent the stack and removing of air from the area adjacent the stack, and for substantially simultaneously moving both of said at least a portion of said first valve portion and said at least a portion of said second valve portion from at least the open configuration to the closed configuration to substantially simultaneously stop providing of air to the area adjacent the stack and removing of air from the area adjacent the stack; and single operating means for operating all of;
said at least a portion of said first valve portion, said at least a portion of said second valve portion, and said at least one solid element, substantially simultaneously. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. In a printing press comprising:
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a free, a plate cylinder rotatably mounted on said frame, said plate cylinder for positioning a printing plate thereon, dampening means for applying dampening medium to said printing plate, an ink reservoir for holding a supply of ink, an inking mechanism for transferring the ink between said ink reservoir and said plate cylinder at least during operation of said printing press, said inking mechanism comprising a plurality of inking rollers, at least one ink fountain roller, and at least one ink transfer roller for transferring ink between said ink fountain roller and at least one of said plurality of inking rollers, sheet feeding means for feeding sheets of printing stock into the printing press from a stack of printing stock, the stack having a top for supplying sheets therefrom, a rubber blanket cylinder having a rubber blanket disposed thereabout for receiving an ink impression from the plate cylinder, a sheet drum for receiving sheets being fed for printing the ink impression of the rubber blanket onto the sheets, and sheet delivery apparatus for receiving printed sheets and stacking the printed sheets; means for controlling air flow of the sheet feeding means, the sheet feeding means having means for providing input air thereinto and means for removal of exhaust air therefrom, said means for controlling comprising; valve means for controlling air flow through said means for providing input air and said means for removal of exhaust air; said valve means comprising; a first valve portion for controlling flow of air through said means for providing input air, said first valve portion having at least an open configuration for passage of air therethrough and a closed configuration for blocking passage of air therethrough; a second valve portion for controlling flow of air through said means for removal of exhaust air, said second valve portion having at least an open configuration for passage of air therethrough and a closed configuration for passage of air therethrough; at least one solid element connecting at least a portion of said first valve portion to at least a portion of said second valve portion for substantially simultaneously moving both of said at least a portion of said first valve portion and said at least a portion of said second valve portion between at least the open configuration and the closed configuration; single operating means for operating all of said at least a portion of said first valve portion, said at least a portion of said second valve portion and said at least one solid element substantially simultaneously to substantially simultaneously open both said first and second valve portion and substantially simultaneously close said first and second valve portion; and means for operating said first valve portion substantially independently of said second valve portion for varying an amount of air flowing through said first valve portion substantially independently of the amount of air flowing through said second valve portion. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification