CA1123077A - Paper feed control system - Google Patents
Paper feed control systemInfo
- Publication number
- CA1123077A CA1123077A CA337,542A CA337542A CA1123077A CA 1123077 A CA1123077 A CA 1123077A CA 337542 A CA337542 A CA 337542A CA 1123077 A CA1123077 A CA 1123077A
- Authority
- CA
- Canada
- Prior art keywords
- reel
- pulses
- frequency
- counter means
- predetermined
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
- A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
- A24C5/14—Machines of the continuous-rod type
- A24C5/20—Reels; Supports for bobbins; Other accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
- B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
Landscapes
- Replacement Of Web Rolls (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The actuation of a machine stop mechanism or reel splice mechanism in response to a predetermined low reel diameter of a reel of material feeding a web thereof to a machine is achieved by electronically counting electrical pulses corresponding in frequency to the machine speed and reel rotational speed, utilizing the reset signal of the machine speed counter to reset the reel speed counter until the reel speed corresponds to the predeter-mined minimum diameter thereof, and thereupon generating an output signal from the second counter as the actuation signal. The control mechanism is reliable and inexpensive, requiring only readily-available electronic hardware.
The actuation of a machine stop mechanism or reel splice mechanism in response to a predetermined low reel diameter of a reel of material feeding a web thereof to a machine is achieved by electronically counting electrical pulses corresponding in frequency to the machine speed and reel rotational speed, utilizing the reset signal of the machine speed counter to reset the reel speed counter until the reel speed corresponds to the predeter-mined minimum diameter thereof, and thereupon generating an output signal from the second counter as the actuation signal. The control mechanism is reliable and inexpensive, requiring only readily-available electronic hardware.
Description
3~7~
~: : TITLE OF INVENTION
, .
PAPER FæED CO~TROL S~STEM
: FIELD OF INVENTION
The present invention is directed to a paper feed control system, particularly useful in the manufacture of cigarettes.
~: BACKGROUND TO THE INVENTION
- .
In the manufacture of cigarettes, a rod or braid of tobacco particles is formed and wrapped in a paper web to form a continuous cigarette rod which is cut into individual cigarette lengths. The paper web is continuously fed at a constant speed from a reel of the paper. At the present time, in order to detect a low level of reel paper, a mechanical system is used in which a pivoted arm engages the reel and is positioned to actuate a shut-off switch when a predetermined reel diameter is reached. The latter system has been found to be unreliable, leading to wide error margins.
I SUMM~RY OF INVENTION
The present invention provides a reliable yet simple procedure for determining when the diameter of the paper reel has reached a predetermined diameter. The invention utilizes electrical signals generated by the machine being fed and by the reel combined with counters in a unique way to generate a signal when the predetermined diameter is reached.
In accordance with the present invention, there is - provided a method of generating an electrical pulse for actuation of a stop or splice mechanism for a machine receiving a web of material from a reel thereof when a predetermined diameter of the reel is reached. The method includes the establishment of a first serie~ of electrical pulses corresponding in frequency to the running speed of the machine, the electronic counting of the first series of ' 35 pulses on first electronic counter means in successive predetermined numbers of pulses, and the establishment of an output signal from the ~irst counter means when each ; predetermined number of pulses has ~een counted.
;''!; A second series of electrical pulses is established ~ 40 corresponding in frequency to the rotational speed of the '' - , : ~ , , . . . ~ .
. , .
$~
.. . .
3 ~ ~ ~
reel and hence to the diameter of the material ~n the reel -1 and a predetermined minimum diameter of the material on the ` reel is established corresponding to a predetermined pulse frequency and at which the actuation pulse is to be ; 5 generated.
The output signal from the first counter means is applied to second electronic counter means as a reset signal thereto. The second series of pulses is electronically counted on the second counter means for successively increa-; 10 sing numbers of the pulses as the frequency thereof increases with decreasing material diameter prior to the application of the reset signal thereto.
An output signal from the second counter means isgenerated as the actuation pulse for the stop or splice mechanism when the number of pulses counted on the second counter means achieves a predetermined num~er corresponding to the predetermined pulse frequency of the minimum diameter of material and prior to application of the reset signal thereto.
BRIEF D~SCRIPTION OF DRAWING
The sole Figure of the drawing is a schematic bloc~ diagram of an electronic pre~erred embodiment of the present invention.
DESCRIPTION OF PREFERRED ~MBODIMENT
. . _ . . . _ _ . . . _ _ A control mechanism 10 is illustrated in the drawing, suitable for use to control the actuation of a machine stop mechanism in response to a predetermined diameter of one or the other of two reels of material feedin~ webs to the machine. The mechanism 10 was particularly designed for a cigarette-making machine wherein separate webs of cigarette wrap~ing paper and cor~-tipping paper are fed from reels thereof to the cigarette-making machine and it is necessary to determine when either reel is almost empty of paper, so that a new full reel can be substituted.
; The invention, however, is broad enough to encompass the control of the end stop diameter of a single reel of material feeding a web thereof to a machine of any convenient type and is versatile enough to encompass the , . ' , ' :
:
3 ~
control o the end stop diameter of any of a plurality of reels of materials feeding separate webs thereof to a machine of any convenient type.
The mechanism 10 includes a first electronic counter 12 which continuously receives a machine speed signal 14 in the form of a series of electrical pulses corresponding in frequency to the running speed of the cigarette-making machine. Such electrical pulses may be generated in any desired known manner. While the cigarette-making machine usually runs at a substantially constantspeed, so that pulse frequency is substantially constant, it will be apparent from the succeeding description that the mechanism 10 operates independently of machine speed.
The electronic counter 12 counts a predetermined ; 15 number of the pulses whereupon a reset signal 16 is gener-ated which resets the counter 12 to count the next predetermined number of pulses. This counting and reset procedure is repeated for as long as the cigarette-making machine runs.
~: : TITLE OF INVENTION
, .
PAPER FæED CO~TROL S~STEM
: FIELD OF INVENTION
The present invention is directed to a paper feed control system, particularly useful in the manufacture of cigarettes.
~: BACKGROUND TO THE INVENTION
- .
In the manufacture of cigarettes, a rod or braid of tobacco particles is formed and wrapped in a paper web to form a continuous cigarette rod which is cut into individual cigarette lengths. The paper web is continuously fed at a constant speed from a reel of the paper. At the present time, in order to detect a low level of reel paper, a mechanical system is used in which a pivoted arm engages the reel and is positioned to actuate a shut-off switch when a predetermined reel diameter is reached. The latter system has been found to be unreliable, leading to wide error margins.
I SUMM~RY OF INVENTION
The present invention provides a reliable yet simple procedure for determining when the diameter of the paper reel has reached a predetermined diameter. The invention utilizes electrical signals generated by the machine being fed and by the reel combined with counters in a unique way to generate a signal when the predetermined diameter is reached.
In accordance with the present invention, there is - provided a method of generating an electrical pulse for actuation of a stop or splice mechanism for a machine receiving a web of material from a reel thereof when a predetermined diameter of the reel is reached. The method includes the establishment of a first serie~ of electrical pulses corresponding in frequency to the running speed of the machine, the electronic counting of the first series of ' 35 pulses on first electronic counter means in successive predetermined numbers of pulses, and the establishment of an output signal from the ~irst counter means when each ; predetermined number of pulses has ~een counted.
;''!; A second series of electrical pulses is established ~ 40 corresponding in frequency to the rotational speed of the '' - , : ~ , , . . . ~ .
. , .
$~
.. . .
3 ~ ~ ~
reel and hence to the diameter of the material ~n the reel -1 and a predetermined minimum diameter of the material on the ` reel is established corresponding to a predetermined pulse frequency and at which the actuation pulse is to be ; 5 generated.
The output signal from the first counter means is applied to second electronic counter means as a reset signal thereto. The second series of pulses is electronically counted on the second counter means for successively increa-; 10 sing numbers of the pulses as the frequency thereof increases with decreasing material diameter prior to the application of the reset signal thereto.
An output signal from the second counter means isgenerated as the actuation pulse for the stop or splice mechanism when the number of pulses counted on the second counter means achieves a predetermined num~er corresponding to the predetermined pulse frequency of the minimum diameter of material and prior to application of the reset signal thereto.
BRIEF D~SCRIPTION OF DRAWING
The sole Figure of the drawing is a schematic bloc~ diagram of an electronic pre~erred embodiment of the present invention.
DESCRIPTION OF PREFERRED ~MBODIMENT
. . _ . . . _ _ . . . _ _ A control mechanism 10 is illustrated in the drawing, suitable for use to control the actuation of a machine stop mechanism in response to a predetermined diameter of one or the other of two reels of material feedin~ webs to the machine. The mechanism 10 was particularly designed for a cigarette-making machine wherein separate webs of cigarette wrap~ing paper and cor~-tipping paper are fed from reels thereof to the cigarette-making machine and it is necessary to determine when either reel is almost empty of paper, so that a new full reel can be substituted.
; The invention, however, is broad enough to encompass the control of the end stop diameter of a single reel of material feeding a web thereof to a machine of any convenient type and is versatile enough to encompass the , . ' , ' :
:
3 ~
control o the end stop diameter of any of a plurality of reels of materials feeding separate webs thereof to a machine of any convenient type.
The mechanism 10 includes a first electronic counter 12 which continuously receives a machine speed signal 14 in the form of a series of electrical pulses corresponding in frequency to the running speed of the cigarette-making machine. Such electrical pulses may be generated in any desired known manner. While the cigarette-making machine usually runs at a substantially constantspeed, so that pulse frequency is substantially constant, it will be apparent from the succeeding description that the mechanism 10 operates independently of machine speed.
The electronic counter 12 counts a predetermined ; 15 number of the pulses whereupon a reset signal 16 is gener-ated which resets the counter 12 to count the next predetermined number of pulses. This counting and reset procedure is repeated for as long as the cigarette-making machine runs.
2~ A second electronic counter 18 continuously : receives a first reel speed signal 20 in the form of a series of electricàl pulses corresponding in frequency to the speed of rotation of the first reel feeding the machine.
Such electrical pulses may be generated in any desired known manner.
As the diameter of the first reel of material decreases, the rotative speed of the reel increases, so that the frequency of the pulses increases as the reel diameter decreases. A maximum pulse frequency is predeter-3a mined corresponding to the diameter of the first reel at ; which machine stop or splicing is desired to be effected.
The second counter 18 is also in communicationwith the reset signal 16 of the first counter 12 for reset of the second counter 18 when the first counter 12 also is reset. The number of signals counted by *he second counter 18 prior to reset thereof increases as the frequency increa-ses with decreased reel diamter.
The second counter 18 produces an output control signal 22 to actuate a machine stop mechanism, or a splicing .
1, . . .
, : , ~ : , ,: -. . ~-:, . "
.. . .
" : ~
Such electrical pulses may be generated in any desired known manner.
As the diameter of the first reel of material decreases, the rotative speed of the reel increases, so that the frequency of the pulses increases as the reel diameter decreases. A maximum pulse frequency is predeter-3a mined corresponding to the diameter of the first reel at ; which machine stop or splicing is desired to be effected.
The second counter 18 is also in communicationwith the reset signal 16 of the first counter 12 for reset of the second counter 18 when the first counter 12 also is reset. The number of signals counted by *he second counter 18 prior to reset thereof increases as the frequency increa-ses with decreased reel diamter.
The second counter 18 produces an output control signal 22 to actuate a machine stop mechanism, or a splicing .
1, . . .
, : , ~ : , ,: -. . ~-:, . "
.. . .
" : ~
3~
mechanism when the maximum pulse frequency corresponding to the desired minimum reel diameter is counted prior to actu-ation of reset thereof by the reset signal 16 of the first counter 12.
A third electronic counter 24 receives a second reel speed signal 26 from a second reel of material feeding ; a web thereof to the machine and also the reset signal 16 of the first counter 12. The third electronic counter 24 operates in identical manner to the second counter and generates an output control signal 28 for a machine stop mechanism or splice mechanism when the second reel reaches a predetermined minimum diameter.
The control mechanism 20, therefore, monitors machine and reel speeds and function independent of lS variations of the machine speed, since production of the control signal results from a comparison of relative speeds of machine and material reel by counters.
The electronic elements used in the mechanism, i.e., ; speed sensors and counters, are conventional readily-available electronic hardware and hence the mechanism 10, as well as being reliable, is simple and inexpensive.
SUMMARY OF DISCLOSUR_ . -In summary of this disclosure, the present invention is directed to a paper feed control mechanism which is simple, reliable and inexpensive and overcomes prior art problems. Modifications are possible within the scope o~ the irvention.
- ~
.
`
`
:.; ' . ~
mechanism when the maximum pulse frequency corresponding to the desired minimum reel diameter is counted prior to actu-ation of reset thereof by the reset signal 16 of the first counter 12.
A third electronic counter 24 receives a second reel speed signal 26 from a second reel of material feeding ; a web thereof to the machine and also the reset signal 16 of the first counter 12. The third electronic counter 24 operates in identical manner to the second counter and generates an output control signal 28 for a machine stop mechanism or splice mechanism when the second reel reaches a predetermined minimum diameter.
The control mechanism 20, therefore, monitors machine and reel speeds and function independent of lS variations of the machine speed, since production of the control signal results from a comparison of relative speeds of machine and material reel by counters.
The electronic elements used in the mechanism, i.e., ; speed sensors and counters, are conventional readily-available electronic hardware and hence the mechanism 10, as well as being reliable, is simple and inexpensive.
SUMMARY OF DISCLOSUR_ . -In summary of this disclosure, the present invention is directed to a paper feed control mechanism which is simple, reliable and inexpensive and overcomes prior art problems. Modifications are possible within the scope o~ the irvention.
- ~
.
`
`
:.; ' . ~
Claims (4)
1. A method of generating an electrical pulse for actuation of a stop or splice mechanism for a machine receiving a web of material from a reel of the same, which comprises establishing a first series of electrical pulses corresponding in frequency to the speed of the machine, electronically counting said first series of pulses on first electronic counter means in successive predetermined numbers thereof, establishing an output signal from said first counter means when each predetermined number of pulses has been counted, establishing a second series of electrical pulses corresponding in frequency to the rotational speed of the reel and hence to the diameter of the material on the reel, establishing a predetermined minimum diameter of said material on the reel corresponding to a predetermined pulse frequency and at which said actuation pulse is to be generated, applying said output signal from said first counter means to a second electronic counter means as a reset signal thereto, electronically counting said second series of pulses on said second counter means for successively increasing numbers of said pulses as the frequency thereof increases with decreasing material diameter prior to the application of said reset signal thereto, and generating an output signal from said second counter means as said actuation pulse when the number of pulses counted on said second counter means achieves a predetermined number corresponding to the predetermined frequency and prior to the application of said reset signal thereto.
2. The method of claim 1 including at least one additional reel of material feeding a web of the same to said machine and generating an independent electrical pulse for actuation of a stop or splice mechanism for each said additional reel by:
establishing a third series of electrical pulses corresponding in frequency to the rotational speed of the additional reel, establishing a predetermined minimum diameter of said material on the additional reel corresponding to a further predetermined pulse frequency and at which said independent actuation pulse is to be generated, applying said output signal from said first counter means to third electronic counter means as a reset signal thereto, electronically counting said third series of pulses on said third counter means for successively increasing numbers of said pulses as the frequency thereof increases with decreasing material diameter prior to the' application of said reset signal thereto, and generating an output signal for said third counter means as said independent actuation pulse when the number of pulses counted on said third counter means achieves a predetermined number corresponding to the further predetermined frequency and prior to the application of said reset signal thereto.
establishing a third series of electrical pulses corresponding in frequency to the rotational speed of the additional reel, establishing a predetermined minimum diameter of said material on the additional reel corresponding to a further predetermined pulse frequency and at which said independent actuation pulse is to be generated, applying said output signal from said first counter means to third electronic counter means as a reset signal thereto, electronically counting said third series of pulses on said third counter means for successively increasing numbers of said pulses as the frequency thereof increases with decreasing material diameter prior to the' application of said reset signal thereto, and generating an output signal for said third counter means as said independent actuation pulse when the number of pulses counted on said third counter means achieves a predetermined number corresponding to the further predetermined frequency and prior to the application of said reset signal thereto.
3. In a cigarette-making machine wherein a tobacco rod is wrapped in a web of paper to form a continuous cigarette rod from which individual cigarettes are cut, said web of paper is fed from a reel thereof to said machine;
and a control mechanism is provided to determine a predetermined low diameter of paper on said reel for actuation of a machine stop mechanism or a reel splice mechanism, the improvement wherein said control mechanism comprises:
first speed sensing means for generating a first series of electrical pulses corresponding in frequency to the speed of said machine, first electronic counter means for electronically counting said first series of pulses in successive predetermined numbers thereof and for establishing an output signal when each predetermined number has been counted, second speed sensing means for generating a second series of electrical pulses corresponding in frequency to the rotational speed of the reel of material, and second electronic counter means for receiving said output signal as a reset signal thereto, for electronically counting said second series of pulses in successively increasing numbers of said pulses as the frequency thereof increases with decreasing material diameter prior -to application of said reset signal thereto, and for generating an output signal as the actuation pulse for said machine stop mechanism for reel splice mechanism when the number of pulses counted on said second counter means achieves a predetermined number corresponding to a predetermined pulse frequency corresponding to a desired minimum material diameter on the reel.
and a control mechanism is provided to determine a predetermined low diameter of paper on said reel for actuation of a machine stop mechanism or a reel splice mechanism, the improvement wherein said control mechanism comprises:
first speed sensing means for generating a first series of electrical pulses corresponding in frequency to the speed of said machine, first electronic counter means for electronically counting said first series of pulses in successive predetermined numbers thereof and for establishing an output signal when each predetermined number has been counted, second speed sensing means for generating a second series of electrical pulses corresponding in frequency to the rotational speed of the reel of material, and second electronic counter means for receiving said output signal as a reset signal thereto, for electronically counting said second series of pulses in successively increasing numbers of said pulses as the frequency thereof increases with decreasing material diameter prior -to application of said reset signal thereto, and for generating an output signal as the actuation pulse for said machine stop mechanism for reel splice mechanism when the number of pulses counted on said second counter means achieves a predetermined number corresponding to a predetermined pulse frequency corresponding to a desired minimum material diameter on the reel.
4. The apparatus of claim 3 including an additional reel of cork tip paper also feeding said cigarette-making machine for providing cork tipping to said cigarettes, and wherein said control mechanism further comprises:
third speed sensing means for generating a third series of electrical pulses corresponding in frequency to the rotational speed of the additional reel of material, and third electronic counting means for receiving said output signal of said first counting means as a reset signal thereto, for electronically counting said third series of pulses in successively increasing numbers of said pulses as the frequency thereof increases with decreasing material diameter prior to application of said reset signal thereto, and for generating an output signal as the independent actuation pulse for said machine stop mechanism or reel splice mechanism when the number of pulses counted on said third counter means achieves a predetermined number corresponding to a predetermined pulse frequency correspon-ding to a desired minimum material diameter on the additional reel.
third speed sensing means for generating a third series of electrical pulses corresponding in frequency to the rotational speed of the additional reel of material, and third electronic counting means for receiving said output signal of said first counting means as a reset signal thereto, for electronically counting said third series of pulses in successively increasing numbers of said pulses as the frequency thereof increases with decreasing material diameter prior to application of said reset signal thereto, and for generating an output signal as the independent actuation pulse for said machine stop mechanism or reel splice mechanism when the number of pulses counted on said third counter means achieves a predetermined number corresponding to a predetermined pulse frequency correspon-ding to a desired minimum material diameter on the additional reel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA337,542A CA1123077A (en) | 1979-10-12 | 1979-10-12 | Paper feed control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA337,542A CA1123077A (en) | 1979-10-12 | 1979-10-12 | Paper feed control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1123077A true CA1123077A (en) | 1982-05-04 |
Family
ID=4115345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA337,542A Expired CA1123077A (en) | 1979-10-12 | 1979-10-12 | Paper feed control system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1123077A (en) |
-
1979
- 1979-10-12 CA CA337,542A patent/CA1123077A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3854587A (en) | Optical inspection apparatus | |
| GB1518823A (en) | Method and arrangement for checking the wrapping of rod-like articles of the tobacco-processing industry | |
| CA1145641A (en) | Firmness control in cigarette maker | |
| US3253491A (en) | Cutting apparatus for mouthpiece rods | |
| GB1559196A (en) | Method and device for forming a cigarette rod | |
| GB909925A (en) | Improvements relating to the production of tobacco rod articles | |
| CA1123077A (en) | Paper feed control system | |
| US3287887A (en) | Detecting apparatus for strands | |
| ES387337A1 (en) | Device for automatically varying the operating speed in packaging machines for cigarettes | |
| JPS56107961A (en) | Transient state detector for engine | |
| GB1251051A (en) | ||
| GB1192403A (en) | Yarn Monitoring Device | |
| JPS5511445A (en) | Sheet material feeder | |
| US4024394A (en) | Method and apparatus for measuring and regulating the density of rod-like fillers consisting of tobacco or the like | |
| US3238951A (en) | Apparatus for wrapping and tipping cigars | |
| GB929337A (en) | Apparatus for measuring a characteristic of a moving filler in a continuous rod machine and recording variations therein | |
| GB1414544A (en) | Cigarette cutoff and filter tip attachment registration apparatus | |
| ES457703A1 (en) | Storage unit for compensating production imbalances between cigarette-manufacturing machines and a packeting machine | |
| TW325397B (en) | Cigarette manufacturing device | |
| GB1304810A (en) | ||
| KR100420800B1 (en) | Band feed length adjusting device in packing machine | |
| JPS5548871A (en) | Lead-in unit of pickup arm for player | |
| JPS52149019A (en) | Paper traveling monitor unit | |
| GB1604494A (en) | Method and circuit arrangement for controlling a device operating on articles of the tobacco-processing industry | |
| GB994035A (en) | Ejector device for eliminating faulty cigarettes from cigarette making machines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |