US4832329A
Expired / Lapsed
US
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Device for controlling a pile lifting device and method of operation
Assignee: Heidelberger Druckmaschinen AG
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Filing: 1987-09-16
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Granted: 1989-05-23
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Expires: 2007-09-16
Abstract
Abstract Device for controlling a pile-lifting device of a sheet-processing machine has a drive for performing correction movements in order to keep the upper side of the pile within a range of heights, a device for scanning the position of an upper side of the pile so as to determine whether the upper side of the pile has reached a predetermined height or not, and a control device for controlling the correction movements in accordance with the result of the scanning of the position of the upper side of the pile, and includes device for determining a quantity dependent upon the correction movement.
Inventors
- 👤 Anton Rodi
- 👤 Michael Kruger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:08
CPC Classifications
B; B65; B65H; B65H1/00; B65H1/08; B65H1/18
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
153 words
A device for controlling a pile-lifting device of a sheet-processing machine having a drive for performing correction movements in order to keep the upper side of the pile within a range of heights, a device for scanning the position of an upper side of the pile so as to determine whether the upper side of the pile has reached a predetermined height or not, and a control device for controlling the correction movements in accordance with the result of the scanning of the position of the upper side of the pile, comprising means for determining a quantity dependent upon the correction movement, and a memory wherein setpoint values for the correction movement as a function of sheet thickness are storable, having means for enabling, in accordance with the sheet thickness, a performance of a correction movement having a magnitude corresponding to a value assigned to the sheet thickness and contained in said memory.
Claim 2
Independent Claim
153 words
A device for controlling a pile-lifting device of a sheet-processing machine having a drive for performing correction movements in order to keep the upper side of the pile within a range of heights, a device for scanning the position of an upper side of the pile so as to determine whether the upper side of the pile has reached a predetermined height or not, and a control device for controlling the correction movements in accordance with the result of the scanning of the position of the upper side of the pile, comprising means for determining a quantity dependent upon the correction movement, and a memory wherein setpoint values for the correction movement as a function of sheet thickness are storable, having means for enabling, in accordance with the sheet thickness, a performance of a correction movement having a magnitude corresponding to a value assigned to the sheet thickness and contained in said memory.
Claim 3
Dependent Claim
16 words
Device according to claim 1, including means for producing information regarding operating speed of the machine.
Claim 4
Dependent Claim
31 words
Device according to claim 1, wherein the control device is of such construction that it enables a performance of a respective correction movement having a magnitude greater than one sheet thickness.
Claim 5
Dependent Claim
32 words
Device according to claim 1, wherein the control device is of such construction that it enables a performance of a respective correction movement having a magnitude corresponding to a single sheet thickness.
Claim 6
Dependent Claim
31 words
Device according to claim 1, wherein the control device is of such construction that it enables a performance of a respective correction movement having a magnitude smaller than one sheet thickness.
Claim 7
Dependent Claim
25 words
Device according to claim 1, wherein the control device is of such concentration that it enables a performance of a correction movement which is continuous.
Claim 8
Dependent Claim
28 words
Device according to claim 1, wherein the control device is so constructed that, depending upon the determination of a value, the control device switches the correction movement over.
Claim 9
Dependent Claim
44 words
Device according to claim 1, including means for producing information on operating speed of the machine, means for producing information on the magnitude of an executed correction movement, and means for determining sheet thickness from the information from both of said information producing means.
Claim 10
Dependent Claim
24 words
Device according to claim 1, wherein the control device is constructed so that a starting frequency of the drive is within a prescribed range.
Claim 11
Dependent Claim
45 words
Device according to claim 1, wherein the control device is constructed so as to adjust a value of at least one of the correction movement and a starting frequency of the drive, depending upon a mean quantity of paper to be delivered per unit time.
Claim 12
Dependent Claim
47 words
Device according to claim 1, including means for detecting movement continued by the pile-lifting device at the end of a correction movement after the drive has been switched off and means for determining an actually performed correction movement from a continued movement detected by said detecting means.
Claim 13
Dependent Claim
20 words
Device according to claim 1, wherein the control device comprises an arrangement for varying the speed of the correction movement.
Claim 14
Dependent Claim
140 words
Method of operating a device for controlling a pile-lifting device of a sheet-processing machine by performing a correction movement in order to keep an upper side of a pile within a range of heights, scanning the position of the upper side of the pile so as to determine whether the upper side of the pile has reached a predetermined height or not, and controlling the correction movement in accordance with the result of the scanning of the position of the upper side of the pile, which includes determining a quantity dependent upon the correction movement, storing in a memory setpoint values for the correction movement as a function of sheet thickness and, depending upon sheet thickness, enabling a performance of a correction movement having a magnitude corresponding to a value assigned to the sheet thickness and stored in the memory.
Claim 15
Dependent Claim
140 words
Method of operating a device for controlling a pile-lifting device of a sheet-processing machine by performing a correction movement in order to keep an upper side of a pile within a range of heights, scanning the position of the upper side of the pile so as to determine whether the upper side of the pile has reached a predetermined height or not, and controlling the correction movement in accordance with the result of the scanning of the position of the upper side of the pile, which includes determining a quantity dependent upon the correction movement, storing in a memory setpoint values for the correction movement as a function of sheet thickness and, depending upon sheet thickness, enabling a performance of a correction movement having a magnitude corresponding to a value assigned to the sheet thickness and stored in the memory.
Claim 16
Dependent Claim
15 words
Method according to claim 13 which includes producing information regarding operating speed of the machine.
Claim 17
Dependent Claim
27 words
Method according to claim 13 wherein the corrective movement has a magnitude ranging in value from less than a sheet thickness to greater than a sheet thickness.
Claim 18
Dependent Claim
12 words
Method according to claim 13 which includes performing the correction movement continuously.
Claim 19
Dependent Claim
19 words
Method according to claim 13 which includes switching the correction movement over, depending upon the determination of a value.
Claim 20
Dependent Claim
35 words
Method according to claim 13, which includes producing information on operating speed of the machine, producing information on the magnitude of an executed correction movement, and determining sheet thickness from both of the produced informations.
Claim 21
Dependent Claim
17 words
Method according to claim 13, wherein a starting frequency of the drive is within a prescribed range.
Claim 22
Dependent Claim
38 words
Method according to claim 13, which includes, depending upon a mean quantity of paper to be delivered per unit time, adjusting a value of at least one of the correction movement and a starting frequency of the drive.
Claim 23
Dependent Claim
41 words
Method according to claim 13, which includes detecting a movement continued by the pile-lifting device at the end of a correction movement after the drive has been switched off, and determining an actually performed correction movement from the detected continued movement.
Claim 24
Dependent Claim
14 words
Method according to claim 13 which includes varying the speed of the correction movement.
References Cited (Backward Citations)
DE158171C
Cited
US2912243A
Cited
DE1181717B
Cited
US3716226A
Cited
US3768806A
Cited
US4310153A
Cited
US4535463A
Cited
US4624454A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-05-22 | 1992-11-21 | 1993-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-22 | 1996-11-21 | 1997-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-22 | 2000-11-21 | 2001-05-23 | $7700.00 | Window Closed / Lapsed |