US4582316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for withdrawing printed sheets for examination or sorting purposes
Assignee: Heidelberger Druckmaschinen AG
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Filing: 1984-06-22
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Granted: 1986-04-15
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Expires: 2004-06-22
Abstract
Abstract A device for withdrawing printed sheets from a delivery of a sheet-fed rotary printing machine for examination and sorting purposes, the delivery being a chain delivery with gripper rows attached to the chain and having grippers operable by cam control, withdrawal of the printed sheets being initiated by a delayed opening of the respective grippers, includes a first gripper-opening cam, means for releasing the first gripper-opening cam from a locked position thereof so that it is engageable with a rotating control cam for bringing the first gripper-opening cam into a position wherein opening of the grippers is effected and is prevented, a second gripper-opening cam for initiating a delayed opening of the grippers, the second gripper-opening cam being disposed downstream from the first gripper-opening cam in travel direction of the printed sheets, and means for feeding the printed sheets released from the grippers, when the grippers are opened, directly to a conveyance device for further transporting the printed sheets.
Inventors
- 👤 Arno Wirz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:33
CPC Classifications
B; B65; B65H; B65H29/00; B65H29/58; B65H29/585
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
216 words
A device for withdrawing printed sheets from a delivery of a sheet-fed rotary printing machine for examination and sorting purposes, the delivery being a chain delivery with rear sprocket wheels and with gripper rows attached to the chain and having grippers openable by cam control, withdrawal of the printed sheets being initiated by a delayed opening of the respective grippers, comprising a first gripper-opening cam pivotable about an articulating point means for applying a spring biasing force to said first gripper-opening cam, an additional cam roller carried by said first gripper-opening cam, an arresting-lever mechanism for releasing said first gripper-opening cam from a locked position thereof so that it is engageable via said additional cam roller with a rotating control cam mounted on a shaft of the rear sprocket wheels of the chain delivery, said first gripper-opening cam being pivotable via said rotating control cam into respective positions wherein opening of the grippers if effected and is prevented, a second gripper-opening cam for initiating a delayed opening of the grippers, said second gripper-opening cam being disposed downstream from said first gripper-opening cam in travel direction of the printed sheets, and means for feeding the printed sheets released from the grippers, when the grippers are opened, directly to a conveyance device for further transporting the printed sheets.
Claim 2
Independent Claim
216 words
A device for withdrawing printed sheets from a delivery of a sheet-fed rotary printing machine for examination and sorting purposes, the delivery being a chain delivery with rear sprocket wheels and with gripper rows attached to the chain and having grippers openable by cam control, withdrawal of the printed sheets being initiated by a delayed opening of the respective grippers, comprising a first gripper-opening cam pivotable about an articulating point means for applying a spring biasing force to said first gripper-opening cam, an additional cam roller carried by said first gripper-opening cam, an arresting-lever mechanism for releasing said first gripper-opening cam from a locked position thereof so that it is engageable via said additional cam roller with a rotating control cam mounted on a shaft of the rear sprocket wheels of the chain delivery, said first gripper-opening cam being pivotable via said rotating control cam into respective positions wherein opening of the grippers if effected and is prevented, a second gripper-opening cam for initiating a delayed opening of the grippers, said second gripper-opening cam being disposed downstream from said first gripper-opening cam in travel direction of the printed sheets, and means for feeding the printed sheets released from the grippers, when the grippers are opened, directly to a conveyance device for further transporting the printed sheets.
Claim 3
Dependent Claim
37 words
Device according to 1 wherein said arresting lever mechanism includes an arresting lever manually actuable for bringing said first gripper-opening cam into a position wherein it is supported and a position wherein it is free of support.
Claim 4
Dependent Claim
37 words
Device according to 1 wherein said arresting lever mechanism includes an arresting lever manually actuable for bringing said first gripper-opening cam into a position wherein it is supported and a position wherein it is free of support.
Claim 5
Dependent Claim
77 words
Device according to claim 1 including electromechanical means for actuating said arrester lever so as to bring said first gripper-opening cam into a position wherein it is supported, said electromechanical means including a magnetic switch activatable via a selector switch for actuating said arrester lever so that a varying number of the printed sheets can be withdrawn selectively, and a counting device engaging said control cam for counting the number of the printed sheets which are withdrawn.
Claim 6
Dependent Claim
42 words
Device according to claim 1 wherein said control cam has a rise found therein via which said arresting lever is automatically returnable under spring bias at a predetermined time to an initial position thereof wherein said first gripper opening cam is supported.
Claim 7
Dependent Claim
51 words
Device according to claim 1 wherein said second gripper-opening cam is stationary, and said conveyance device is located close to said second gripper-opening cam, said conveyance device comprising a guide channel and transport rollers cooperating with the guide channels for feeding to the outside a printed sheet disengaged from the grippers.
Claim 8
Dependent Claim
35 words
Device according to claim 1 including lateral frame walls supporting the delivery, said releasing means comprising a pawl mechanism with actuating means therefor located at an end region of one of said lateral frame walls.
Claim 9
Dependent Claim
172 words
Device for withdrawing printed sheets from a delivery of a sheet-fed rotary printing machine for examination and sorting purposes, the delivery being a chain delivery with gripper rows attached to the chain and having grippers openable by cam control, withdrawal of the printed sheets being initiated by a delayed opening of the respective grippers, comprising a gripper-opening cam in the form of a disc and mounted on a rotatable shaft, a drawbar directly engaging said gripper-opening cam, said drawbar having an end thereof projecting beyond a rear region of a side wall whereon the chain delivery is supported, and a handle mounted on said drawbar end for manually moving said drawbar horizontally in and opposite the direction of travel of the printed sheet into two end positions, said gripper-opening cam being pivotable out of an end position wherein a sheet is released above a sheet pile into an end position wherein a sheet is released away from a sheet pile and taken up by a conveyor device and conveyed to the outside.
Claim 10
Dependent Claim
172 words
Device for withdrawing printed sheets from a delivery of a sheet-fed rotary printing machine for examination and sorting purposes, the delivery being a chain delivery with gripper rows attached to the chain and having grippers openable by cam control, withdrawal of the printed sheets being initiated by a delayed opening of the respective grippers, comprising a gripper-opening cam in the form of a disc and mounted on a rotatable shaft, a drawbar directly engaging said gripper-opening cam, said drawbar having an end thereof projecting beyond a rear region of a side wall whereon the chain delivery is supported, and a handle mounted on said drawbar end for manually moving said drawbar horizontally in and opposite the direction of travel of the printed sheet into two end positions, said gripper-opening cam being pivotable out of an end position wherein a sheet is released above a sheet pile into an end position wherein a sheet is released away from a sheet pile and taken up by a conveyor device and conveyed to the outside.
Claim 11
Dependent Claim
52 words
Device according to claim 7 including a compression spring and a stop on said drawbar for retaining said gripper-opening cam in a given position for forming a sheet pile, said handle having stops at said rear region of said side wall for determining an end position wherein a printed sheet is withdrawn.
Claim 12
Dependent Claim
22 words
Device according to claim 7 wherein said conveyor device comprises a guide channel and a suction roller cooperating with said guide channel.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |