Patent US2175820A successfully refreshed from Google Patents.
US3594552A
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System and method for indication and control of circumferential register
Assignee: Hurletron Inc
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Filing: 1968-04-17
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Granted: 1971-07-20
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Expires: 1988-04-17
Abstract
Abstract A system is disclosed for indicating and controlling register between repetitive patterns of work applied to a moving web, wherein a digital encoder is rotated in synchronism with rotation of work-performing members, and by counting encoder pulses any error in register at respective work stations may be displayed and/or utilized for automatic control purposes. Counter circuitry is utilized both to facilitate set up of the system and to provide a precisely adjustable digital set point for error determination in operation. Provision is made for a high error sampling rate for automatic control and a lower error sampling rate for digital display. A digital display of average error is an alternative to a lower error sampling rate.
Inventors
- 👤 Robert G Adamson
- 👤 Paul W Thiede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:38
CPC Classifications
B; B31; B31F; B31F1/00; B31F1/07; B26; B26D; B26D5/00; B26D5/20; B26D5/30; B26D5/34; B65; B65H; B65H23/00; B65H23/04; B65H23/18; B65H23/188; B65H23/1882; B31F2201/00; B31F2201/07; B31F2201/0779; B65H2801/00; B65H2801/03; B65H2801/21
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
349 words
Apparatus for detecting and measuring errors in register between repetitive patterns of work, including spaced register indicia, on a moving web of material and other repetitive patterns of work subsequently applied to the web by a rotary member located along the path of web travel and operated at a peripheral speed substantially corresponding to the linear speed of the web, said apparatus comprising: a. a web scanner constructed and arranged to detect the occurrence of said indicia on the web adjacent to the locus of said rotary member and to provide an abrupt, electrical scanner signal upon each such occurrence, b. a position detector driven in synchronism with said rotary member and constructed and arranged to provide an abrupt, electrical detector signal when a point on the periphery of said rotary member reaches a specific angular position, c. a rotary, digital encoder driven in synchronism with said rotary member and constructed and arranged to provide a series of encoder pulses, each of which represents a uniform, small angle of rotation of said rotary member, d. an initial pulse counter connected to receive said detector signals and said encoder pulses, count said encoder pulses starting upon the occurrence of each detector signal and provide an initial counter signal when its count reaches a predetermined value, e. error-counting means connected with said encoder, said initial counter and said scanner to receive the encoder pulses, the initial counter signal and the scanner signal respectively therefrom, to count said encoder pulses starting upon occurrence of the scanner signal and ending upon occurrence of the initial counter signal when the scanner signal is first to occur, and to count said encoder pulse starting upon occurrence of the initial counter signal and ending upon occurrence of the scanner signal when the initial counter signal is first to occur, to provide an error count, and f. output means connected with said error-counting means for generating an error signal having characteristics in accordance with the magnitude of the error count and in accordance with the order of occurrence of the scanner signal and the initial counter signal.
Claim 2
Dependent Claim
349 words
Apparatus for detecting and measuring errors in register between repetitive patterns of work, including spaced register indicia, on a moving web of material and other repetitive patterns of work subsequently applied to the web by a rotary member located along the path of web travel and operated at a peripheral speed substantially corresponding to the linear speed of the web, said apparatus comprising: a. a web scanner constructed and arranged to detect the occurrence of said indicia on the web adjacent to the locus of said rotary member and to provide an abrupt, electrical scanner signal upon each such occurrence, b. a position detector driven in synchronism with said rotary member and constructed and arranged to provide an abrupt, electrical detector signal when a point on the periphery of said rotary member reaches a specific angular position, c. a rotary, digital encoder driven in synchronism with said rotary member and constructed and arranged to provide a series of encoder pulses, each of which represents a uniform, small angle of rotation of said rotary member, d. an initial pulse counter connected to receive said detector signals and said encoder pulses, count said encoder pulses starting upon the occurrence of each detector signal and provide an initial counter signal when its count reaches a predetermined value, e. error-counting means connected with said encoder, said initial counter and said scanner to receive the encoder pulses, the initial counter signal and the scanner signal respectively therefrom, to count said encoder pulses starting upon occurrence of the scanner signal and ending upon occurrence of the initial counter signal when the scanner signal is first to occur, and to count said encoder pulse starting upon occurrence of the initial counter signal and ending upon occurrence of the scanner signal when the initial counter signal is first to occur, to provide an error count, and f. output means connected with said error-counting means for generating an error signal having characteristics in accordance with the magnitude of the error count and in accordance with the order of occurrence of the scanner signal and the initial counter signal.
Claim 3
Dependent Claim
33 words
The apparatus of claim 1 with said output means comprising display means c nnected to said error-counting means for receiving and displaying selected ones of the error counts generated by said error-counting means.
Claim 4
Dependent Claim
40 words
The apparatus of claim 2 wherein said display means comprises a plurality of electronic digital display tubes and a similar tube which displays a sign indicative of the order of occurrence of the scanner signal and the initial counter signal.
Claim 5
Dependent Claim
63 words
The apparatus of claim 1 with said output means being connected with said error counting means and being operative to sample each successive error count therein and to generate an output error signal of magnitude in accordance with the magnitude of the error count and of polarity in accordance with the order of occurrence of the scanner signal and the initial counter signal.
Claim 6
Dependent Claim
50 words
Apparatus according to claim 4 with said output means further comprising error display means connected with said error-counting means and with said position detector and providing for the display of the error count at a sampling rate equal to submultiple of the rate of occurrence of said position detector signals.
Claim 7
Independent Claim
310 words
The method of determining the direction and magnitude of errors in register between repetitive patterns of work, represented by recurrent register indicia, on a moving web of material and separate, repetitive work subsEquently applied to the web by a rotary member, said method comprising the steps of: a. scanning the web at a point along the path of web travel adjacent to the locus of said rotary member and generating an abrupt, electrical scanner signal in response to each of said recurrent register indicia, b. generating an abrupt electrical position signal upon each revolution of said rotary member when a point on its periphery reaches a specific angular position, c. generating during each revolution of said rotary member a train of encoder pulses in such manner that each pulse represents a substantially uniform small angle of rotation of said rotary member and a substantially uniform short distance of travel of the web, d. counting the number of encoder pulses generated during each revolution of said rotary member starting with the occurrence of said position signal and deriving a reference signal when the count of encoder pulses reaches a predetermined value, e. separately counting the number of encoder pulses generated between the occurrence of the scanner signal and the reference signal, regardless of which is first to occur, and starting the separate counting in response to the first to occur of said scanner signal and said reference signal, and reading the accumulated count of said encoder pulses in response to the last to occur of said scanner signal and said reference signal, and f. deriving from said separately counted pulses and from the first to occur of said scanner signal and said reference signal, register error signals having characteristics indicative of the number of such separately counted pulses and the order of occurrence of said scanner signal and said reference signal.
Claim 8
Independent Claim
310 words
The method of determining the direction and magnitude of errors in register between repetitive patterns of work, represented by recurrent register indicia, on a moving web of material and separate, repetitive work subsEquently applied to the web by a rotary member, said method comprising the steps of: a. scanning the web at a point along the path of web travel adjacent to the locus of said rotary member and generating an abrupt, electrical scanner signal in response to each of said recurrent register indicia, b. generating an abrupt electrical position signal upon each revolution of said rotary member when a point on its periphery reaches a specific angular position, c. generating during each revolution of said rotary member a train of encoder pulses in such manner that each pulse represents a substantially uniform small angle of rotation of said rotary member and a substantially uniform short distance of travel of the web, d. counting the number of encoder pulses generated during each revolution of said rotary member starting with the occurrence of said position signal and deriving a reference signal when the count of encoder pulses reaches a predetermined value, e. separately counting the number of encoder pulses generated between the occurrence of the scanner signal and the reference signal, regardless of which is first to occur, and starting the separate counting in response to the first to occur of said scanner signal and said reference signal, and reading the accumulated count of said encoder pulses in response to the last to occur of said scanner signal and said reference signal, and f. deriving from said separately counted pulses and from the first to occur of said scanner signal and said reference signal, register error signals having characteristics indicative of the number of such separately counted pulses and the order of occurrence of said scanner signal and said reference signal.
Claim 9
Dependent Claim
43 words
The method of claim 6 including the deriving of register error signals of the analog type, having a magnitude directly proportional to the separately counted pulses and a polarity dependent upon the order of occurrence of said scanner signal and said reference signal.
Claim 10
Dependent Claim
37 words
The method of claim 7 further comprising displaying a number in accordance with the number of separately counted encoder pulses at a readout rate equal to a submultiple of the rate of occurrence of said position signals.
Claim 11
Dependent Claim
40 words
The method of claim 6 further comprising visually displaying the count of said encoder pulses as a plurality of decimal digits, and changing the visual display at a rate which is less than the rate of the successive counting cycles.
Claim 12
Dependent Claim
261 words
A registration error measuring system for measuring the distance of any misregistration between a moving work receiving means and work applied thereto by a work applying means substantially coordinated in its operation with the movement of such work-receiving means, comprising: a. scanning means cooperable with said work-receiving means for scanning the same to produce successive scanner signals which are precisely correlated with the instantaneous position of said work-receiving means, b. encoder means substantially synchronized with the operation of said work-applying means for generating encoder pulses having a repetition rate substantially proportionally related to the rate of operation of said work-applying means, c. adjustable counting means for counting and responding to an adjustable number of said encoder pulses and for cyclically resetting in response to the operation of said work-applying means for providing a series of reference pulses substantially precisely coordinated with the operation of said work-applying means relative to said work-receiving means and which are to be time coincident with the respective scanner signals when the work-applying means is in registration with said work-receiving means, d. error-counting means for receiving both said reference pulses and said scanner signals, and for counting the number of encoder pulses which occur in any interval between the occurrence of a respective one of said reference pulses and a corresponding one of said scanner signals, to provide error counts iN successive cycles of said adjustable counting means, and e. incrementally calibrated display means coupled to said error-counting means for displaying an incrementally calibrated error readout in accordance with error counts supplied thereto from said error-counting means.
Claim 13
Dependent Claim
261 words
A registration error measuring system for measuring the distance of any misregistration between a moving work receiving means and work applied thereto by a work applying means substantially coordinated in its operation with the movement of such work-receiving means, comprising: a. scanning means cooperable with said work-receiving means for scanning the same to produce successive scanner signals which are precisely correlated with the instantaneous position of said work-receiving means, b. encoder means substantially synchronized with the operation of said work-applying means for generating encoder pulses having a repetition rate substantially proportionally related to the rate of operation of said work-applying means, c. adjustable counting means for counting and responding to an adjustable number of said encoder pulses and for cyclically resetting in response to the operation of said work-applying means for providing a series of reference pulses substantially precisely coordinated with the operation of said work-applying means relative to said work-receiving means and which are to be time coincident with the respective scanner signals when the work-applying means is in registration with said work-receiving means, d. error-counting means for receiving both said reference pulses and said scanner signals, and for counting the number of encoder pulses which occur in any interval between the occurrence of a respective one of said reference pulses and a corresponding one of said scanner signals, to provide error counts iN successive cycles of said adjustable counting means, and e. incrementally calibrated display means coupled to said error-counting means for displaying an incrementally calibrated error readout in accordance with error counts supplied thereto from said error-counting means.
Claim 14
Dependent Claim
81 words
A system according to claim 10 in which said adjustable counting means comprises a main counting circuit having plural decimal counting stages, and said incrementally calibrated display means includes digital display devices coupled to respective stages of said main counting circuit for displaying the number of encoder pulses occurring between a resetting of said adjustable counting means and the occurrence of one of said scanner signals to assist in the adjustment of said adjustable counting means during setup of the system.
Claim 15
Dependent Claim
36 words
A system in accordance with claim 10 wherein said adjustable counting means comprises manually operable digital switching means for selectively establishing any one of a series of successive counts at which said reference pulse is generated.
Claim 16
Dependent Claim
61 words
A system according to claim 10 with said incrementally calibrated display means comprising a series of digital number display devices, and readout means coordinated with the cyclical resetting of said adjustable counting means and operable at a sampling rate equal to a submultiple of the cyclical resetting of the adjustable counter means to transmit error count readings to said display means.
Claim 17
Dependent Claim
31 words
A system according to claim 10 with fail-safe means responsive to the absence of a scanner pulse in a given cycle of said adjustable counting means to signal a fail-safe condition.
Claim 18
Dependent Claim
27 words
A system according to claim 14 with said fail-safe means being responsive to a predetermined excessive error count of said error-counting means to initiate the fail-safe condition.
Claim 19
Dependent Claim
26 words
A system according to claim 10 with fail-safe means coupled to said error-counting means and responsive to an excessive error count to signal a fail-safe condition.
Claim 20
Dependent Claim
50 words
A system according to claim 10 with said error-counting means including a digital comparator circuit for signalling which of a respective reference pulse and a corresponding scanner signal is first to occur, and said display means being controlled by said comparator circuit to display the polarity of said error readout.
Claim 21
Dependent Claim
29 words
A system according to claim 10 with a position detector operated in synchronism with said work-applying means to cyclically supply a detector pulse for resetting said adjustable counting means.
Claim 22
Dependent Claim
48 words
A system according to claim 18 with a pulse-counting means connected to said position detector for emitting control pulses at a submultiple of the rate of the detector pulses, and said display means being operative to read and display the error count in response to each control pulse.
Claim 23
Dependent Claim
258 words
A registration error measuring system for measuring the distance of any misregistration between a moving work-receiving means and work applied thereto by a work-applying means substantially coordinated in its operation with the movement of such work-receiving means, comprising: a. scanning means cooperable with said work-receiving means for scanning the same to produce successive scanner signals which are precisely correlated with the instantaneous position of said work-receiving means, b. encoder means substantially synchronized with the operation of said work-applying means for generating encoder pulses having a repetition rate substantially proportionally related to the rate of operation of said work-applying means, c. adjustable counting means for counting and responding to an adjustable number of said encoder pulses and for cyclically resetting in response to the operation of said work-applying means for providing a series of reference pulses substantially precisely coordinated with the operation of said work-applying means relative to said work-receiving means and which are to be time coincident with the respective scanner signals when the work-applying means Is in registration with said work-receiving means, d. error-counting means for receiving both said reference pulses and said scanner signals, and for counting the number of encoder pulses which occur in any interval between the occurrence of a respective one of said reference pulses and a corresponding one of said scanner signals, to provide error count in successive cycles of said adjustable counting means, and e. analog error means coupled to said error-counting means for providing an analog error signal of magnitude in accordance with the magnitude of each successive error count.
Claim 24
Dependent Claim
258 words
A registration error measuring system for measuring the distance of any misregistration between a moving work-receiving means and work applied thereto by a work-applying means substantially coordinated in its operation with the movement of such work-receiving means, comprising: a. scanning means cooperable with said work-receiving means for scanning the same to produce successive scanner signals which are precisely correlated with the instantaneous position of said work-receiving means, b. encoder means substantially synchronized with the operation of said work-applying means for generating encoder pulses having a repetition rate substantially proportionally related to the rate of operation of said work-applying means, c. adjustable counting means for counting and responding to an adjustable number of said encoder pulses and for cyclically resetting in response to the operation of said work-applying means for providing a series of reference pulses substantially precisely coordinated with the operation of said work-applying means relative to said work-receiving means and which are to be time coincident with the respective scanner signals when the work-applying means Is in registration with said work-receiving means, d. error-counting means for receiving both said reference pulses and said scanner signals, and for counting the number of encoder pulses which occur in any interval between the occurrence of a respective one of said reference pulses and a corresponding one of said scanner signals, to provide error count in successive cycles of said adjustable counting means, and e. analog error means coupled to said error-counting means for providing an analog error signal of magnitude in accordance with the magnitude of each successive error count.
Claim 25
Dependent Claim
36 words
A system according to claim 20 with said error-counting means including a comparator circuit for providing a polarity signal in accordance with which a respective reference pulse and the corresponding scanner signal is first to occur.
Claim 26
Dependent Claim
214 words
Apparatus for detecting and measuring errors in register between repetitive patterns of work, including spaced register indicia, on a moving web of material and other repetitive patterns of work subsequently applied to the web by a rotary member located along the path of web travel and operated at a peripheral speed substantially corresponding to the linear speed of the web, said apparatus comprising a web scanner constructed and arranged to detect the occurrence of sad indicia on the web adjacent to the locus of said rotary member and to provide a series of scanner pulses in response to scanning of the successive indicia, detector pulses being produced as a function of the cyclical operation of the rotary member on the web, and encoder pulses being generated in accordance with successive uniform increments of travel of the web, characterized in that a counting chain for counting encoder pulses is provided having sufficient capacity so that a reference pulse can be generated a required number of encoder pulses after the occurrence of one of the first mentioned pulses so as to define by its time coincidence with the other of the first mentioned pulses the condition of register between the respective patterns of work applied to the web, without requiring any mechanical adjustment of the system.
Claim 27
Dependent Claim
214 words
Apparatus for detecting and measuring errors in register between repetitive patterns of work, including spaced register indicia, on a moving web of material and other repetitive patterns of work subsequently applied to the web by a rotary member located along the path of web travel and operated at a peripheral speed substantially corresponding to the linear speed of the web, said apparatus comprising a web scanner constructed and arranged to detect the occurrence of sad indicia on the web adjacent to the locus of said rotary member and to provide a series of scanner pulses in response to scanning of the successive indicia, detector pulses being produced as a function of the cyclical operation of the rotary member on the web, and encoder pulses being generated in accordance with successive uniform increments of travel of the web, characterized in that a counting chain for counting encoder pulses is provided having sufficient capacity so that a reference pulse can be generated a required number of encoder pulses after the occurrence of one of the first mentioned pulses so as to define by its time coincidence with the other of the first mentioned pulses the condition of register between the respective patterns of work applied to the web, without requiring any mechanical adjustment of the system.
Claim 28
Dependent Claim
78 words
Apparatus according to claim 22 with said counter chain being operable in set up mode to count the number of encoder pulses occurring in the time interval between a detector pulse and a scanner pulse, and said counting chain including an adjustable counter which is set to a count in accordance with the number of encoder pulses occurring in such time interval under conditions of register, thereby to provide said reference pulse in operating mode of the system.
Claim 29
Dependent Claim
21 words
Apparatus in accordance with claim 23 with digital display means selectively connectable to the counting chain to display the count registered.
Claim 30
Dependent Claim
45 words
Apparatus according to claim 22 with said adjustable counter having a sufficient counting capacity so that a properly timed reference pulse can be generated for any possible time interval between detector and scanner pulses, thereby to avoid the need for mechanical adjustment of the system.
Claim 31
Dependent Claim
46 words
Apparatus according to claim 22 with error-counting means for counting encoder pulses as a measure of any error in coincidence of the reference pulse and the other of the first-mentioned pulses, and digital display means connected to the error-counting means for displaying the error count therein.
Claim 32
Dependent Claim
22 words
Apparatus according to claim 26 with the display means displaying an average of a series of error counts of the error-counting means.
Claim 33
Dependent Claim
33 words
Apparatus according to claim 26 with the display means providing for the display of the error count at a sampling rate equal to a submultiple of the rate operation of the error-counting means.
Claim 34
Dependent Claim
33 words
Apparatus according to claim 26 with the display means comprising a plurality of electronic digital display tubes and a similar tube which displays a sign indicative of the polarity or any error count.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |