US3913900A - Device for regulating the tension in a running web - Google Patents
Device for regulating the tension in a running web Download PDFInfo
- Publication number
- US3913900A US3913900A US422368A US42236873A US3913900A US 3913900 A US3913900 A US 3913900A US 422368 A US422368 A US 422368A US 42236873 A US42236873 A US 42236873A US 3913900 A US3913900 A US 3913900A
- Authority
- US
- United States
- Prior art keywords
- roller
- take
- motor
- web
- comparison
- 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 - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
- B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/31—Features of transport path
- B65H2301/311—Features of transport path for transport path in plane of handled material, e.g. geometry
- B65H2301/3112—S-shaped
Definitions
- AISTRACT To regulate the tension in a running web, such as a paper web entering a rotary roll printing press, the web is introduced between a take-off roller and a pressure roller and. after its passage over the take-off roller, it moves over a pendulum roller for subsequent passage to the printing press.
- a tachometergenerator is connected to the motor driving the take-off roller and another tachometer-generator is connected to the drive motor for the introduction of the paper web and the values obtained from these tachometer-generator are compared in a mixing point and the take-off roller motor is regulated over a comparison-speed regulator through a reversing switch and a line connected to the take-off roller motor. If the speed of travel of the web is increased, regulation of the take-off roller motor is achieved over a comparison-position regulator connected through a mixing point to two potentiometers, one connected to the pendulum roller and another providing a nominal value, the comparison-position regulator is also connected to the take-off roller motor through the reversing switch and the line.
- the present invention is directed to a device for regulating the tension in a running web, such as a paper web entering a rotary roll printing press after its passage between a take-off roller and a pressure roller and, more particularly, it concerns an arrangement for comparing actual and nominal values and, based on the comparison, regulating the take-off roller motor.
- the primary object of the present invention is to overcome the shortcomings of the devices used in the past for regulating the tension in running webs.
- a comparison-speed regulator and a comparisonposition regulator are connected to a motor for the take-off roller over a line and a reversing switch is provided in the line so that one of the regulators can be selectively connected to the take-off roller motor.
- a tachometer-generator is connected to the take-off roller motor and another tachometer-generator is provided connected to the main motor for the introduction of the paper web and the values obtained from these members are compared in a mixing point and conveyed to the comparison-speed regulator for the regulation of the take-off roller motor.
- a nominal value limiter In the line between the reversing switch and the motor for achieving the desired regulation, there is arranged in series a nominal value limiter, an amplifier, an impulse stage and a power unit. If the web is signalled to increase its speed, regulation is provided through a potentiometer connected to the pendulum roller and to another potentiometer which provide actual and nominal values to the mixing point so that the regulation of the take-off motor is effected through the nominal-actual value comparisomposition regulator when the reversing switch selectively eonnects this regulator through the line and the members contained in the line to the take-off roller motor.
- a paper web 1 is shown running from a roll changer, not illustrated, and passing between a takeoff roller 2 and a pressure roller 3 and, after moving over the take-off roller 2, passing around a pendulum roller 4 to the printing mechanism, not shown.
- a motor 5 is connected to the take-off roller and a tachometer generator 6 is associated with the motor 5 and another tachometer-generator 7 is connected to the main motor, not shown, for the introduction of the paper web.
- the values obtained from the tachometer-generators are directed to a mixing point 8 which in turn is connected to a nominal-actual-value comparison-speed regulator 9 for effecting the regulation of the motor 5.
- a line extends from a reversing switch 10 to the motor 5 and this line contains, in series, starting from the reversing switch, a nominal value limiter 11, an amplifier 12, an impulse stage 13, and a power unit 14.
- the reversing switch is selectively displaceable between two separate positions for effecting the regulation of the motor 5 and the control of the tension in the running web. If a signal is delivered for higher speed operation, a potentiometer 15 is connected to the pendulum roller 4 and another potentiometer 16 is provided and both of them are connected to another mixing point 17 which is, in turn, connected to a nominal-actual-value comparison-position regulator I8 for the regulation of the motor.
- the regulator 18 is arranged to be selectively connected through the reversing switch 10 to the line connected to the motor 5 for providing the desired regulation of the motor.
- regulation of the motor 5 is selectively achieved through the connection of the reversing switch 10 to one of the regulators 9, 18.
- the reg ulation is effected in the armature circuit of the motor so that a sensitive, quick-acting regulation is obtained and a pendulum roller with a short path can be used to insure constant paper tension.
- Device for regulating the tension of a running web such as a paper web entering a rotary roll printing press, including a take-off roller, a pressure roller associated with said take-off roller, and a pendulum roller located downstream of said take-off roller in the path of travel of the web, so that the web passes between said take-off roller and said pressure roller and over said take-off roller before it passes over said pendulum roller and onto the printing press, wherein the improvement comprises a motor for said take-off roller, a first tachometer-generator associated with said take-off roller motor for providing a first value, a second tachometer-generator associated with the main motor for pulling the web for providing a second value, a first mixing point in communication with said first tachometer-generator and said second tachometergenerator for comparing the first and second values obtained therefrom, a comparison-speed regulator in communication with said first mixing point, a line connected at one end to said take-off roller motor, a reversing switch connected to
Landscapes
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7216138A SE379722B (US08080257-20111220-C00005.png) | 1972-12-11 | 1972-12-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3913900A true US3913900A (en) | 1975-10-21 |
Family
ID=20301779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US422368A Expired - Lifetime US3913900A (en) | 1972-12-11 | 1973-12-06 | Device for regulating the tension in a running web |
Country Status (8)
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4008661A (en) * | 1975-03-20 | 1977-02-22 | In-Line Equipment Company, Inc. | Printing press for use with bag-making machines |
US4271379A (en) * | 1978-12-29 | 1981-06-02 | Harris Corporation | Web fed printing press motor control |
US4464916A (en) * | 1982-05-28 | 1984-08-14 | The Minster Machine Company | Loop follower straightener control in a press installation |
US4553501A (en) * | 1984-03-14 | 1985-11-19 | Shinko Electric Industries Co., Ltd. | Selective plating apparatus |
EP0329830A2 (en) | 1988-02-22 | 1989-08-30 | Rockwell International Corporation | Web tensioning apparatus |
WO1996004100A1 (en) * | 1994-08-04 | 1996-02-15 | Lawson-Hemphill, Inc. | Yarn test system which moves yarn at high speed under constant, adjustable tension |
US6085956A (en) * | 1998-08-04 | 2000-07-11 | Quad/Graphics, Inc. | Method and apparatus for controlling tension in a web offset printing press |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1119102B (it) * | 1979-06-07 | 1986-03-03 | Cerutti Spa Off Mec | Dispositivo elettronico di regolazione e controllo per il comando di rulli di traino di macchine rotative rotocalco |
DE3812295C1 (US08080257-20111220-C00005.png) * | 1988-04-13 | 1989-07-06 | Albert-Frankenthal Ag, 6710 Frankenthal, De |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3506863A (en) * | 1965-06-24 | 1970-04-14 | Continental Can Co | Web tension controlling rewind drive |
US3784123A (en) * | 1971-04-05 | 1974-01-08 | Whiteley Ind Inc | Tension control system |
US3807613A (en) * | 1972-10-24 | 1974-04-30 | Riggs & Lombard Inc | Tension control system for a running web |
-
1972
- 1972-12-11 SE SE7216138A patent/SE379722B/xx unknown
-
1973
- 1973-11-20 DE DE2357850A patent/DE2357850A1/de not_active Ceased
- 1973-12-06 US US422368A patent/US3913900A/en not_active Expired - Lifetime
- 1973-12-07 CH CH1708773A patent/CH559690A5/xx not_active IP Right Cessation
- 1973-12-07 IT IT54166/73A patent/IT1000241B/it active
- 1973-12-10 GB GB5712973A patent/GB1434266A/en not_active Expired
- 1973-12-11 FR FR7344127A patent/FR2210184A5/fr not_active Expired
- 1973-12-11 JP JP48137461A patent/JPS4988617A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3506863A (en) * | 1965-06-24 | 1970-04-14 | Continental Can Co | Web tension controlling rewind drive |
US3784123A (en) * | 1971-04-05 | 1974-01-08 | Whiteley Ind Inc | Tension control system |
US3807613A (en) * | 1972-10-24 | 1974-04-30 | Riggs & Lombard Inc | Tension control system for a running web |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4008661A (en) * | 1975-03-20 | 1977-02-22 | In-Line Equipment Company, Inc. | Printing press for use with bag-making machines |
US4271379A (en) * | 1978-12-29 | 1981-06-02 | Harris Corporation | Web fed printing press motor control |
US4464916A (en) * | 1982-05-28 | 1984-08-14 | The Minster Machine Company | Loop follower straightener control in a press installation |
US4553501A (en) * | 1984-03-14 | 1985-11-19 | Shinko Electric Industries Co., Ltd. | Selective plating apparatus |
EP0329830A2 (en) | 1988-02-22 | 1989-08-30 | Rockwell International Corporation | Web tensioning apparatus |
WO1996004100A1 (en) * | 1994-08-04 | 1996-02-15 | Lawson-Hemphill, Inc. | Yarn test system which moves yarn at high speed under constant, adjustable tension |
US6085956A (en) * | 1998-08-04 | 2000-07-11 | Quad/Graphics, Inc. | Method and apparatus for controlling tension in a web offset printing press |
Also Published As
Publication number | Publication date |
---|---|
JPS4988617A (US08080257-20111220-C00005.png) | 1974-08-24 |
FR2210184A5 (US08080257-20111220-C00005.png) | 1974-07-05 |
SE379722B (US08080257-20111220-C00005.png) | 1975-10-20 |
DE2357850A1 (de) | 1974-06-12 |
IT1000241B (it) | 1976-03-30 |
GB1434266A (en) | 1976-05-05 |
CH559690A5 (US08080257-20111220-C00005.png) | 1975-03-14 |
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