US3822838A - Web handling apparatus - Google Patents

Web handling apparatus Download PDF

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Publication number
US3822838A
US3822838A US00236122A US23612272A US3822838A US 3822838 A US3822838 A US 3822838A US 00236122 A US00236122 A US 00236122A US 23612272 A US23612272 A US 23612272A US 3822838 A US3822838 A US 3822838A
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United States
Prior art keywords
web
roll
running
output
handling apparatus
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Expired - Lifetime
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US00236122A
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English (en)
Inventor
R Butler
R Arendt
J Hansen
A Rump
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Butler Automatic Inc
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Butler Automatic Inc
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Butler Automatic Inc filed Critical Butler Automatic Inc
Priority to US00236122A priority Critical patent/US3822838A/en
Priority to AU53482/73A priority patent/AU465001B2/en
Priority to CA166,405A priority patent/CA987025A/en
Priority to DE2313857A priority patent/DE2313857A1/de
Priority to GB1341873A priority patent/GB1412207A/en
Priority to BE129014A priority patent/BE797046A/xx
Priority to CH404773A priority patent/CH561652A5/xx
Priority to JP3253473A priority patent/JPS5528982B2/ja
Priority to IT67792/73A priority patent/IT980642B/it
Priority to FR7309910A priority patent/FR2177355A5/fr
Application granted granted Critical
Publication of US3822838A publication Critical patent/US3822838A/en
Assigned to BUTLER AUTOMATIC INC. reassignment BUTLER AUTOMATIC INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BUTLER GREENWICH INC.
Assigned to SHAWMUT BANK, N.A., reassignment SHAWMUT BANK, N.A., SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BUTLER AUTOMATIC INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
    • B65H23/063—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle 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
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/14—Accumulating surplus web for advancing to machine while changing the web roll

Definitions

  • theapparatus responds to the instanta- 1 neous size of the roll by modulating the braking means [56] Referenc so that the drag force imparted by the brake to the UNITED STATES PATENTS web is substantially independent of roll size.
  • the apparatus with which we are concerned here is used to provide web uninterruptedly to machines which consume the web at high speed,- a printing press, for example.
  • the apparatus is designed to automatically splice the leading end of a roll of ready web to the trailing end of a depleted roll of running web and to deliver the web continuously in a controlled fashion to the web-consuming machine.
  • the apparatus includes an accumulator situated between the splicer and the web-consuming machine.
  • the apparatus includes supports for a pair of web rolls, one of which is running and one of which is at'the ready.
  • the running web is conducted into an accumulator and the web material leaving the accumulator travels into the web-consuming machine.
  • the accumulator is comprised of a set of fixed rolls and a movable dancer carrying a second set of rolls.
  • the web is looped between the fixed rolls and the dancer rolls, forming a series of bights.
  • the amount of material in the accumulator is controlled by moving the dancer toward or away from the set of fixed rolls. In other words, as the dancer moves further away from the set of fixed rolls (i.e., upward), theamount of material in the accumulator increases, and vice-versa. In operation, the dancer is biased away from the fixed rolls under constant pressure and is caused to move by changes in the tension in the web. 7
  • web is pulled from the running roll by a pulling roll in the web-consuming machine at a constant rate whose value depends upon the requirements of the webconsuming machine.
  • the running supply roll is braked in a controlled fashion to maintain the proper web tension.
  • the amount of braking force applied to the running web roll i.e., the amount of tension imparted to the web, is determined by the position of the dancer in the accumulator which, as pointed out above, reflects web tension.
  • this invention aims to provide a web tension control system which operates reliably at high web speeds.
  • the dancer As the dancer moves toward the set of fixed rolls (i.e., downward) indicating an increase in the web tension, the web braking force is reduced so that web runs into the accumulator at a faster rate, thereby tending to move the dancer up away from the set of fixed rolls. Conversely, if the dancer moves upward, indicating a web tension decrease, the braking force on the running roll is increased to slow down the rate at which web enters the accumulator. This tends to move the dancer downward toward the set of fixed rolls.
  • the dancer seeks a zero position in an attempt to maintain substantially constant tension in the web. This position is selected so that there is enough web in the accumulator to satisfy Another object of the invention is to provide a web tension control system which maintains close control over web tension immediately before and after a splice.
  • a further object of the invention is to provide a web tension control system which alleviates the dancer hunting problem.
  • Yet another object of the invention is to provide a web tension control system which assures that a splice is made only when the running web is at a standstill.
  • a further object of the invention is to provide a web tension control system which is relatively easy and inexpensive to make and maintain.
  • Still another object of the invention is to provide a web tension control system which responds quickly to an emergency situation such as a web break.
  • Yet another object of the invention is to provide a web tension control system which enables the operator to maintain close control over the position of the dancer in the accumulator during all phases of operation of the web supply apparatus, including emergency stops.
  • the apparatus includes arbors for supporting a roll of running web and a roll of ready web. Both rolls, or more particularly the arbors there- 'for, are equipped with brakes to -vary the speed at which the rolls turn when web is being pulled from them.
  • the running web is fed through an accumulator to the web-consuming machine, i.e., a printing press. In the accumulator, the web is looped between movable dancer rolls and stationary rolls, with the amount of material in the accumulator being determined by the position of the dancer.
  • the webconsuming machine pulls web out of the accumulator with a force sufficient to maintain the web at a selected, substantially constant velocity, depending upon the requirements of the web-consuming machine.
  • the position of the dancer is continuously measured by a pontentiometer whose resistance is employed as a basis for modulating the braking force applied to the roll of running web to maintain a selected tension in the web.
  • the system also determines dancer velocity at each instant and this measurement is used to further modulate the braking force applied to the supply roll to minimize instabilities and the tendency of the dancer to hunt about its selected zero position point.
  • the size of the roll of running web is measured continuously. This is not done by measuring the size of the roll directly by a follower arm. Rather, it is done by obtaining the ratio of the angular velocities of a fixed guide roll ahead of the accumululator and the running roll and employing that measurement to vary the gain of the system to reduce the braking force applied to the running roll as the roll size diminishes. This gives improved braking control for web rolls of all diameters and over a full range of web speeds from thread speed up to full speed emergency stops. This variable gain feature also tends to maintain the dancer at its selected zero position point so that there is no tendency for the dancer to move down, decreasing the web supply in the accumulator as the roll size diminishes.
  • the system automatically activates the splice cycle to decelerate the running web, make the actual splice at a time when the web is stopped and acclerate the ready web to running speed. This is accomplished with a minimum delay between these steps so that a' good splice is made in a short time. Consequently, the system conserves a maximum amount of web storage during the splice cycle.
  • the aforesaid controls over web tension and web and dancer movements are achieved substantially entirely by electronic means. Therefore, the system responds very quickly to changing conditions. Moreover, the electronic components which make up the present tension control system are more reliable and require less maintenance than the pneumatic and mechanical elements found in the prior apparatus.
  • FIG. 1 is a diagrammatic view of web supply apparatus incorporating the present invention.
  • FIG. 2 is a block diagram partly in schematic form showing the tension control system in the FIG. 1 apparatus in greater detail.
  • FIG. 1 of the drawings a roll 10 of running web is supported for rotation on a suitable shaft or arbors 12.
  • the web W from roll 10 is conducted through a splicing station 14 and under a guide roll 16 to an accumulator shown generally at 18.
  • the web leaving the accumulator is conducted under a guide roll 22 and thence to the web-consuming machine, illustratedly a printing press 24.
  • a pull roll in press 24 pulls web W with a force which is sufficient to give the web a fixed velocity V into the press.
  • the apparatus also includes a roll 26 of ready web also rotatively supported on a suitable shaft or arbors 28.
  • the leading end of roll 26 is set in the splicing station to await the depletion of the running roll 10. Whereupon it is spliced to the trailing end of the running web as described in the aforesaid patent so that web proceeds uninterruptedly through the accumulator 18 into the press 24. The activation of the splice cycle will be described later.
  • a conventional tachometer 32 is geared to an arbor 12.
  • the tachometer develops an output signal which is proportional to the velocity of arbors 12 and, hence, roll 10. This signal is coupled to a control console 34 and processed in the manner to be described later.
  • a similar tachometer 36 is geared to an arbor 28 to apply a signal to the console 34 which is proportional to the velocity of roll 26.
  • a third tachometer 38 is geared to the guide roll 16 and generates an output signal to console 34 which is proportional to the velocity of roll 16.
  • Control console 34 processes the signals from tachometer 38 and from either tachometer 32 or tachometer 36 to develop a control signal which represents the instantaneous size of the roll of running web, i.e., either roll 10 or roll 26.
  • the accumulator 18 comprises a set of fixed rolls 42 and a set of dancer rolls 44 in a movable dancer 46 situated directly above rolls 42.
  • the rolls 42 and 44 are staggered so that the web W can be looped around the rolls festoon fashion so that an appreciable amount of web can be stored in the accumulator.
  • the amount of web stored in this manner depends upon the distance between the dancer 46 and the fixed rolls 42. As the spacing increases, more web is stored in the accumulator and vice versa.
  • the dancer 46 carrying the rolls 44 is supported by suitable means such as a cable 52 which extends up vertically and is passed around a pulley 54 positioned above the fixed rolls 42.
  • the cable extends around a second pulley 56 and is attached to a rod 58 of a piston which includes a cylinder 62.
  • the full stroke of the piston causes the dancer 46 to move from its lowermost position adjacent the fixed rolls 42 to an upper position wherein the accumulator stores a maximum amount of web W.
  • differential pulleys or other means may be employed so that the stroke of the piston can be considerably less than the stroke of dancer 46.
  • a solenoid valve 63 feeds air to or bleeds air from the upper chamber within cylinder 62 (i.e., above the piston). Normally, a constant pressure is applied to the piston which is sufficient to support the dancer 46 above rolls 42.
  • a potentiometer 66 is geared to pulley 54 so that a full stroke of the dancer 46 varies the resistance of the potentiometer over its complete range.
  • the instantaneous position of the dancer 46 is reflected by a selected resistance value in potentiometer 46 which is applied to and processed by console 34 as will be described later.
  • the dancer 46 seeks a zero position Y and stores enough web in the accumulator to supply the press 24 when the web input to the accumulator stops during the splicing cycle.
  • press 24 pulls the web W with a force sufficient to maintain the constant running speed V
  • This force necessary to remove the web at constant velocity is the sum of the inertia force caused by rolls 42 and 44 and the drag force at the running roll, i.e., roll 10. Since the inertia force is substantially constant, if constant web tension is to be maintained, then the drag force at the running roll must be varied as the pulling force by the press varies. This is accomplished at roll by a pneumatically operated disc brake 72 connected by an air line 74 to console 34. A similar brake 76 controls the speed of the ready web roll 26, the. fluid for this brake beingapplied from the console through a fluid line 78.
  • the console emits a signal to a conventional eddy current drive 82 associated with the arbors 28 supporting the roll 26 of ready web.
  • Drive 82 accelerates the ready roll for a predetermined time sufficient to bring the ready web substantially up to the web running speed V
  • a similar drive 84 is associated with arbors 12 for accelerating those arbors when they are'supporting a roll of ready web.
  • the amount of web W entering the accumulator 18 is much less than the amount of material being pulled from the accumulator by. press 24. Accordingly, the supply of web stored in the accumulator is reduced, causing the dancer 46 to move down toward the fixed rolls42.
  • console34 controls the speediof the web entering the accumulator and the movements of thedancer to control the rate at which the accumulator refills with Web.
  • the console processes the resistance value of potentiometer 66 to develop a signal which represents the velocity of the dancer 46.
  • This signal is also used to modulate the drag force applied by brake 72 to obtain even closer control over web tension andthe movements'of dancer 46.
  • Stillmore control over web tension and dancer movements is obtained by varying the gain of the closed servoloopin the console in accordance with the size of roll of running web by processing the signals from tachometers 32 and 38. As a result, the system minimizes the hunting movements of the dancer over the full range of web speeds. Also, just the proper amount of braking force is applied to the running web roll for the existent operating conditions.
  • console 34 When the size of the running roll 10 reaches a prede termined minimum diameter, this is detected by console 34 which thereupon initiates the splicing cycle.
  • the console applies a constantly increasing pressure to the break 72 on the running roll so that the roll decelerates at a predetermined rate.
  • the dancer By varying the gain of the system in accordance with roll size, asthe roll diminishes in size, the dancer can be made tomove up, making more storage available at time of splice. Also, as the roll diminishes in size, less storage is required for emergency stops. Accordingly, this system can be programmed so that just enough reserve storage is available in the accumulator to handle an emergency stop proportional to roll diameter.
  • console 34 emits a control signal to the splicing station 14 to bring the leading edge of the its zero position Y at a faster rate than if there is only a small web deficiency in the accumulator. Since a closed loop servocontrol system is employed, there'is much closer control over the movements of dancer 46, particularly during the splice service cycle when the accumulator is being refilled.
  • the system also provides means for detecting excessive movements of the dancer 46 which signal some emergency condition such as a web break. In response to these emergency conditions, this'system stops the webin a controlled fashion in a minimum of time. All of these factors make the present system preferable to the prior pneumatic tension control systems exemplified in the aforesaid patent.
  • FIG. 2 which shows in greater detail the components in console 34
  • the present system measures running roll size indirectly by tachometers which measure the angular velocities of the running roll and the fixed speed guide roll 16. This can be done because the following relationship holds:
  • circuit 94 which filters the signal to eliminate tachometer noise and provides gain so that the output from the amplifier 92 reflects the RPM of the running roll.
  • a similar circuit 94 conditions the output of tachometer 38.
  • the signals from circuits 92 and 94 are applied to an analog divider 96 whichdivides the latter by the former to de velop an output voltage which reflects the instantaneous size of the running roll, e.g., roll 10.
  • the output of the analog divider 96 is applied to an amplitude comparator 98 which compares this voltage with the voltage from an adjustable splice radius threshold control 102.
  • the voltage output of control 102 represents the running roll size at which it is desired to commence the splice cycle.
  • the output of comparator 98 actuates a current driver 104 which energizes a relay 106 to commence the deceleration of the running web in preparation for the splice as described above.
  • circuit 94 indicative of the speed of the guide roll 16 and, hence, the speed of the web entering the accumulator 18, is applied to a second amplitude comparator 108 where it is compared with the voltage from a velocity threshold control 110.
  • comparator 108 develops an output which activates the driver 11 2 controlling a relay 114.
  • the relay initiates the events in the splicing operation described in the aforesaid patent.
  • the relay 114 also engages the eddy current drive 82 which immediately accelerates the ready web 26 following the splice.
  • the output of the analog divider 96 which reflects the instantaneous size of the roll of running web is also used to vary the gain of the control system so that the braking force applied to the roll of running web is varied in accordance with the amount of material on the roll. More particularly, the output of the divider 96 is applied to a multiplier 122 whose other input is a voltage tension command T, developed as will be described presently by measuring the instantaneous position of dancer 46 (FIG. 1). This is because the tension force on web W due to the application of brake 72 varies linearly with the drag force caused by the brake. However, the drag force does not vary linearly with the pressure applied by the transducer 126 to the brake.
  • the drag force varies in accordance with the pressure divided by the radius of the running roll 10.
  • a linear variation between the commanded tension T and resultant paper tension T is achieved by multiplying the commanded tension T, by the radius r of roll in multiplier 122.
  • the output of multiplier 122 then controls a current driver 124 which drives the pressure transducer 126 operating the brake 72.
  • the output of multiplier 122 is applied to a similar current driver 128 which drives a transducer 130 associated with brake 76.
  • the pressure applied to the brake controlling the running web roll always reflects the size of the roll. For a given tension command, this pressure becomes less as the roll becomes smaller because less drag force is necessary to maintain the same amount of tension in the web.
  • the resistance value of potentiometer 66 is used to measure the position of dancer 47. More particularly, the voltage developed across the potentiometer is applied to an amplifier 150 having a variable offset control 152 which sets the dancer zero position Y The output of the amplifier 150 is a positive or negative voltage reflecting the deviation of the dancer from its zero position Y This voltage is applied by way of a switchable attenuator 154 to a resistor 156 which forms one leg of a summing network shown generally at 158. Attenuator 154 is switched to increase the gain of the circuit to brake the running roll to a halt during an emergency stop situation by a FAST STOP signal applied to its terminal 155 as will be described later.
  • the voltage across the potentiometer 66 is also applied to a differentiator 162 whose output represents the rate at whichthe dancer 47 is moving at any given time.
  • This signal is amplified by an amplifier 164 and applied by way of a second switchable attenuator 166 to the summing circuit 158 through the summing resistor 168.
  • the net voltage at network 158 represents the tension command T This voltage is applied via a normally closed switch 172 and an amplifier 174 to the multiplier 122 as noted above.
  • switch 172 is closed and the gain of the servoloop is such that as the dancer moves away from its zero position Y in response to a change in web tension, a tension command T is issued which, when multiplied by the radis r, of the running roll, applies just the right braking force to restore the proper tension condition in the web and return the dancer to its zero position.
  • the desired tension T can be set by way of an operator-controlled variable resistor 176 in the summing network 158 which is connected to a suitable positive voltage source.
  • dancer velocity feedback in the servoloop which develops the tension command T introduces a damperinto the system so that proper selection of position and velocity gains in the servoloop results in a well-behaved system.
  • a 10 pound change in web tension results in a dancer 46 displacement of only one inch.
  • the preferred system is designed with unity gain so that there is minimal overshoot of the dancer 46 when it changes position.
  • a FAST STOP signal is applied to terminal 155.
  • the braking force applied to the running roll during an emergency stop is still modulated by the size of the running roll. Therefore, more braking force is applied for a large roll than for a smaller roll. Consequently, a roll of any size is brought to a stop in a controlled fashion in a minimum amount of time.
  • a COM- MENCE SPLICE signal from relay 106 opens switch 172 disconnecting the summing network 158 from the amplifier 174.
  • the signal also closes a switch 184 which applies the output of a ramp generator 186 to the amplifier.
  • the voltage ramp from generator 186 causes the transducer 126 to apply a gradually increasing pressure on brake 72 controlling the running web so that the roll stops at a predetermined rate.
  • the relay 114 When the running web reaches zero speed (or a selected minimal speed), the relay 114 initiates the splicing sequence and then activates the eddy current drive associated with the ready web roll 26 which supplements the acceleration given the ready roll by the pulling force of the web.
  • the eddy current drive is turned off when the ready web reaches some selected percentage of running web speed V usually on the order of 70-90 percent as will be described presently.
  • the dancer 46 continues to move down for a time because there is still a net loss of web from the accumulator 18. Then it moves upward as the accumulator refills. Since there is a danger that the dancer might bottom or move up too far, the attenuator 166 in the dancer velocity feedback branch is changed to increase gain and thus increase velocity damping. This limits the acceleration of the dancer during its downward movement and'also as it moves upwards during the splice service cycle.
  • This high gain condition is initiated at the'beginning of the roll acceleration by a signal from relay 114 applied to attenuator 166 by way of a HOLD circuit 191. Circuit 191 switches the attenuator 166 back to normal after 30-60 seconds. By this time, the dancer is close to its zero position Y Alternatively, the attenuator 166 can be turned on for a selected time interval after cessation of the COMMENCE SPLICE signal.
  • the point at which the ready web has reached the desired speed is sensed by detecting when the dancer 46 is at rest or has a certain minimum velocity. More particularly, the output of amplifier 164 which represents dancer velocity is applied to a pair of dancer velocity detectors 192 and 194. Detector 192 generates an output signal when the dancer is moving upwards at a rate less than a predetermined magnitude, while detector 194 generates a similar output when the downward velocity of the dancer is less than a predetermined magnitude.
  • the signal from amplifier 164 representing dancer velocity is also used to detect when an emergency condition exists such asa break in the web W. When the web breaks, there is a drastic decrease in web tension which causes the dancer 46 to move up rapidly away from fixed rolls 42.
  • the output of amplifier 164 is applied to an amplitude comparator 204 which also receives an output voltage from a velocity threshold control 206. When the voltage from circuit 164 exceeds the threshold velocity, comparator 204 actuates a driver 208 which closes a relay 210.
  • the closing of the relay 210 can be arranged to brake the running roll to a stop or to control the air pressure applied to cylinder 62 biasing the dancer 46 to slow down the dancer before it reaches its upper and lower limit stops.
  • variable gain feature of the present system allows one to control the amount of reserve storage remaining in the accumulator 18 for emergency stops in accordance with roll size. In other words, the amount of necessary reserve storage becomes less as the roll diameter decreases. Therefore, the output of the divider 96 can be applied to vary the zero position control 152 so that the zero osition Y of the dancer is lowered as the runquires a minimum amount of maintenance as compared with prior pneumatic tension control systems. Furthermore, there is less inertia and inherent delays in the present system so that much closer control can. be maintained over web and dancer movements. Furthermore, the electrical components consisting in large part of standard operational amplifiers and other stock components, are relatively inexpensive to make.
  • Web handling apparatus comprising A. means for supporting a roll of running web,
  • D. means for sensing changes in the tension of the web as it runs caused by changes in the pulling force on the web
  • F. means responsive to the instantaneous size of the roll
  • G means for modulating the control of the braking means so that the drag force imparted by the brake to the web is substantially independent of roll size.
  • C. means for processing the two roll velocities to obtain a ratio which reflects the size of the roll of running web.
  • the processing means comprise a divider which divides the output of the tachometer associated with the fixed diameter roll by the output of the tachometer associated with the roll of running web.
  • the position sensing means is a potentiometer associated with the dancer which changes its resistance value as the dancer moves in response to changes in web tension.
  • Web handling apparatus as defined in claim 5 and further including A. means for measuring the instantaneous velocity of the dancer
  • Web handling apparatus as defined in claim 6 and further including A. means for actuating the braking means so as to decelerate the roll of running web to a selected minimum speed at a programmed rate, and
  • B. means for detecting when the web speed is below a predetermined value.
  • web speed detecting means comprise A. a tachometer associated with a roll engaged by the running web, and
  • B. means for detecting when the output of the tachometer falls below a predetermined value.
  • the dancer velocity measuring means comprise means for differentiating'a signal reflecting the potentiometer resistance value
  • the applying means include a summing network that sums the output of the differentiator with the output provided by the potentiometer.
  • Web handling apparatus as defined in claim 8 and further including A. means for supporting a roll of ready web, and
  • Web handling apparatus comprising A. means for supporting a roll of running web,
  • F. means for sensing the position of the deflectible member, said sensing means emitting a signal when the member deviates from a selected position
  • G means for differentiating the signal from the position sensing means
  • H means for summing the outputs of the position sensing means and the differentiating means
  • Web handling apparatus as defined in claim 12 and further including means for modulating the output of the summing means in accordance with the size of the roll of running web so that the braking force applied to the running roll varies inversely with the size of the running roll.
  • modulating means comprise A. means responsive to the diameter of the running web roll and emitting an output signal in response thereto, and
  • B means for multiplying the output of the responsive means by the output of the summing ,means prior to the application of the latter to the brake control means.
  • Web handling apparatus as defined in claim 14 wherein the running web roll diameter detecting means comprise A. means for measuring the angular velocity of the running web roll,
  • D. means for multiplying the quotient of said division by the output of the summing means prior to application of the latter to the brake control means.
  • Web handling apparatus as defined in claim 13 further including A. means for measuring the speed of the running web and delivering an output signal in response thereto, and
  • B. means responsive to the output of the modulating means for controlling the brake control means so as to brake the running web roll to a selected minimum speed when the running web roll diameter reaches a pre-determined minimum size.
  • Web handling apparatus as defined in claim 16 comprising A. means for accelerating the roll of ready web after the running web roll reaches said selected minimum speed, and
  • B. means for disabling the accelerating means after the ready web roll reaches a pre-determined higher speed.
  • the disabling means include A. a first detector means responsive to the output of the differentiating means for emitting an output when the velocity of the deflectible member in one direction from the selected position is less than a minimum value,
  • C. means for disabling the accelerating means up on the simultaneous occurrence of outputs from the two detector means.
  • Web handling apparatus as defined in claim 18 further including means responsive to the output of the differentiating means for causing the brake control means to brake the running web roll to a stop when the velocity of the deflectable member exceeds a selected maximum value.

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  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)
US00236122A 1972-03-20 1972-03-20 Web handling apparatus Expired - Lifetime US3822838A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US00236122A US3822838A (en) 1972-03-20 1972-03-20 Web handling apparatus
CA166,405A CA987025A (en) 1972-03-20 1973-03-19 Tension control with inertia compensation in web handling system
AU53482/73A AU465001B2 (en) 1972-03-20 1973-03-19 Web handling apparatus
GB1341873A GB1412207A (en) 1972-03-20 1973-03-20 Web handling apparatus
BE129014A BE797046A (fr) 1972-03-20 1973-03-20 Appareil de commande du defilement d'une bande alimentant notamment une presse d'imprimerie
CH404773A CH561652A5 (sv) 1972-03-20 1973-03-20
DE2313857A DE2313857A1 (de) 1972-03-20 1973-03-20 Zufuehreinrichtung fuer bahnmaterial
JP3253473A JPS5528982B2 (sv) 1972-03-20 1973-03-20
IT67792/73A IT980642B (it) 1972-03-20 1973-03-20 Dispositivo per l alimentazione controllata di nastri continui in particolare a macchine da stam pa
FR7309910A FR2177355A5 (sv) 1972-03-20 1973-03-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00236122A US3822838A (en) 1972-03-20 1972-03-20 Web handling apparatus

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US3822838A true US3822838A (en) 1974-07-09

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Application Number Title Priority Date Filing Date
US00236122A Expired - Lifetime US3822838A (en) 1972-03-20 1972-03-20 Web handling apparatus

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US (1) US3822838A (sv)
JP (1) JPS5528982B2 (sv)
AU (1) AU465001B2 (sv)
BE (1) BE797046A (sv)
CA (1) CA987025A (sv)
CH (1) CH561652A5 (sv)
DE (1) DE2313857A1 (sv)
FR (1) FR2177355A5 (sv)
GB (1) GB1412207A (sv)
IT (1) IT980642B (sv)

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936008A (en) * 1974-07-01 1976-02-03 Harris Corporation Reel stand tension control system
US3995791A (en) * 1975-07-09 1976-12-07 Package Machinery Company Continuous web supply system
DE2553943A1 (de) * 1975-12-01 1977-06-02 Liba Maschf Fadenspeicher fuer schaer- und zettelmaschinen
US4151594A (en) * 1976-02-26 1979-04-24 Bobst-Champlain, Inc. Web tension control for high-speed web handling equipment
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FR2492351A1 (fr) * 1980-10-22 1982-04-23 Owens Illinois Inc Procede et appareil pour commander la tension d'une nappe de matiere
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US4838498A (en) * 1988-02-22 1989-06-13 Rockwell International Corporation Web tensioning system
US5098029A (en) * 1990-06-01 1992-03-24 Eastman Kodak Company Apparatus and method for minimizing web cinching during unwinding of rolls of web materials of indeterminate length
US5190234A (en) * 1988-12-06 1993-03-02 Butler Automatic, Inc. Web handling method and apparatus with pre-acceleration of web feed rolls
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US6507832B1 (en) 1994-02-15 2003-01-14 R.R. Donnelley & Sons Company Using ink temperature gain to identify causes of web breaks in a printing system
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EP1378354A2 (en) * 2001-11-29 2004-01-07 Rafael Pascual Bernabeu Machine to simultaneously hot-press, print, flock imprint and brush
US6676062B1 (en) * 1999-06-01 2004-01-13 Honigmann Industrielle Elektronik Gmbh Device for discharging webs
US20050139713A1 (en) * 2003-11-24 2005-06-30 Kimberly-Clark Worldwide, Inc. System and process for controlling the deceleration and acceleration rates of a sheet material in forming absorbent articles
US20050242224A1 (en) * 2004-04-30 2005-11-03 Komori Corporation Braking force control method and device for strip-shaped material feeding device
US6986823B2 (en) * 1999-12-22 2006-01-17 Bundesdruckerei Gmbh Process and apparatus for producing a laminate, comprising at least one polymer film with information and at least one substrate, for further processing for forgery-proof documents
US20060207716A1 (en) * 2005-03-15 2006-09-21 Uwe Schneider Apparatus for reducing downtime in web processes
US7392634B1 (en) * 2005-06-16 2008-07-01 Maye Anthony J Web printing and feed machine and method
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US20120292422A1 (en) * 2011-04-18 2012-11-22 Alkar-Rapidpak-Mp Equipment, Inc. Systems and methods for supplying a web of packaging material to an indexing-motion packaging machine
US20130284845A1 (en) * 2012-04-27 2013-10-31 Web Industries, Inc. Interliner method and apparatus
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US3936008A (en) * 1974-07-01 1976-02-03 Harris Corporation Reel stand tension control system
US3995791A (en) * 1975-07-09 1976-12-07 Package Machinery Company Continuous web supply system
DE2553943A1 (de) * 1975-12-01 1977-06-02 Liba Maschf Fadenspeicher fuer schaer- und zettelmaschinen
US4151594A (en) * 1976-02-26 1979-04-24 Bobst-Champlain, Inc. Web tension control for high-speed web handling equipment
US4274903A (en) * 1979-07-13 1981-06-23 Mock Vernon A High speed programmable pressure-sensitive transfer tape applicator
US4281803A (en) * 1979-11-19 1981-08-04 Molins Machine Company, Inc. Splicer control
FR2492351A1 (fr) * 1980-10-22 1982-04-23 Owens Illinois Inc Procede et appareil pour commander la tension d'une nappe de matiere
US4337904A (en) * 1980-10-22 1982-07-06 Owens-Illinois, Inc. Web tension control method and apparatus
US4793564A (en) * 1986-08-27 1988-12-27 Veb Kombinat Polygraph "Werner Lamberz" Leipzig Device for controlling unwinding in a web-feeding device of a printing machine
US4838498A (en) * 1988-02-22 1989-06-13 Rockwell International Corporation Web tensioning system
US5190234A (en) * 1988-12-06 1993-03-02 Butler Automatic, Inc. Web handling method and apparatus with pre-acceleration of web feed rolls
US5098029A (en) * 1990-06-01 1992-03-24 Eastman Kodak Company Apparatus and method for minimizing web cinching during unwinding of rolls of web materials of indeterminate length
US6098063A (en) * 1994-02-15 2000-08-01 R. R. Donnelley & Sons Device and method for identifying causes of web breaks in a printing system on web manufacturing attributes
US6507832B1 (en) 1994-02-15 2003-01-14 R.R. Donnelley & Sons Company Using ink temperature gain to identify causes of web breaks in a printing system
US5694524A (en) * 1994-02-15 1997-12-02 R. R. Donnelley & Sons Company System and method for identifying conditions leading to a particular result in a multi-variant system
US6336106B1 (en) 1994-02-15 2002-01-01 R.R. Donnelley & Sons Company System and method for partitioning a real-valued attribute exhibiting windowed data characteristics
US6009421A (en) * 1994-02-15 1999-12-28 R. R. Donnelley & Sons Company Device and method for decreasing web breaks in a printing system based on web tension ratios
US5517914A (en) * 1994-09-30 1996-05-21 Tilton, Sr.; Danny E. Web tension regulator for printing machine
US5647276A (en) * 1994-09-30 1997-07-15 Tilton, Sr.; Danny Eugene Web tension regulator for printing machine
WO1997032803A1 (en) * 1996-03-07 1997-09-12 Martin Automatic Inc. Improved system and method for controlling the speed and tension of an unwinding running web
US5671895A (en) * 1996-03-07 1997-09-30 Martin Automatic, Inc. System and method for controlling the speed and tension of an unwinding running web
US20020128990A1 (en) * 1997-05-01 2002-09-12 Kaminskas Paul A. Control methodology and apparatus for reducing delamination in a book binding system
US5887816A (en) * 1997-07-28 1999-03-30 Accra-Wire Controls Inc. Dereeler for selectively feeding coiled stock into an associated fabricating machine
US6676062B1 (en) * 1999-06-01 2004-01-13 Honigmann Industrielle Elektronik Gmbh Device for discharging webs
EP1129971A2 (en) * 1999-12-22 2001-09-05 Tokyo Kikai Seisakusho Ltd. Paper roll braking device
EP1129971A3 (en) * 1999-12-22 2003-02-26 Tokyo Kikai Seisakusho Ltd. Paper roll braking device
US6986823B2 (en) * 1999-12-22 2006-01-17 Bundesdruckerei Gmbh Process and apparatus for producing a laminate, comprising at least one polymer film with information and at least one substrate, for further processing for forgery-proof documents
US6293192B1 (en) * 2000-04-03 2001-09-25 Norman C. Bartlett Newsprint core brake system for newspaper presses
US6547707B2 (en) * 2001-01-10 2003-04-15 Heidelberger Druckmaschinen Ag Strain control in an infeed of a printing machine
EP1378354A3 (en) * 2001-11-29 2005-03-16 Rafael Pascual Bernabeu Machine to simultaneously hot-press, print, flock imprint and brush
EP1378354A2 (en) * 2001-11-29 2004-01-07 Rafael Pascual Bernabeu Machine to simultaneously hot-press, print, flock imprint and brush
US20030209629A1 (en) * 2002-05-10 2003-11-13 Tsugio Hirata Web splicing method and web splicing apparatus
US6886772B2 (en) 2002-05-10 2005-05-03 Zuiko Corporation Web splicing method and web splicing apparatus
US20050098677A1 (en) * 2002-05-10 2005-05-12 Tsugio Hirata Web splicing method and web splicing apparatus
EP1364897A1 (en) * 2002-05-10 2003-11-26 Zuiko Corporation Web splicing method and web splicing apparatus
US20050139713A1 (en) * 2003-11-24 2005-06-30 Kimberly-Clark Worldwide, Inc. System and process for controlling the deceleration and acceleration rates of a sheet material in forming absorbent articles
US7458540B2 (en) * 2003-11-24 2008-12-02 Kimberly-Clark Worldwide, Inc. System and process for controlling the deceleration and acceleration rates of a sheet material in forming absorbent articles
US20050242224A1 (en) * 2004-04-30 2005-11-03 Komori Corporation Braking force control method and device for strip-shaped material feeding device
US7540447B2 (en) * 2004-04-30 2009-06-02 Komori Corporation Braking force control method and device for strip-shaped material feeding device
US20060207716A1 (en) * 2005-03-15 2006-09-21 Uwe Schneider Apparatus for reducing downtime in web processes
US8910689B2 (en) 2005-03-15 2014-12-16 The Procter & Gamble Company Apparatus for reducing downtime in web processes
US7392634B1 (en) * 2005-06-16 2008-07-01 Maye Anthony J Web printing and feed machine and method
US7975584B2 (en) 2007-02-21 2011-07-12 Curt G. Joa, Inc. Single transfer insert placement method and apparatus
US20100181412A1 (en) * 2009-01-12 2010-07-22 Abb Oy Method and apparatus for decelerating a machine reel of an unwinder
US8991737B2 (en) * 2009-01-12 2015-03-31 Abb Oy Method and apparatus for decelerating a machine reel of an unwinder
US20120292422A1 (en) * 2011-04-18 2012-11-22 Alkar-Rapidpak-Mp Equipment, Inc. Systems and methods for supplying a web of packaging material to an indexing-motion packaging machine
US20130284845A1 (en) * 2012-04-27 2013-10-31 Web Industries, Inc. Interliner method and apparatus
US10029876B2 (en) * 2012-04-27 2018-07-24 Web Industries, Inc. Interliner method and apparatus
US10322899B2 (en) * 2012-04-27 2019-06-18 Web Industries Inc. Interliner method and apparatus
CN103708267A (zh) * 2013-12-23 2014-04-09 重庆东登科技有限公司 无刷伺服纠偏控制器中传感器和执行器状态的显示方法
CN103708267B (zh) * 2013-12-23 2016-02-17 重庆东登科技有限公司 无刷伺服纠偏控制器中传感器和执行器状态的显示方法
CN105923436A (zh) * 2016-06-22 2016-09-07 中山市新宏业自动化工业有限公司 一种多层膜软包装袋制袋不停机储料装置
CN108217273A (zh) * 2017-11-30 2018-06-29 彩虹（合肥）液晶玻璃有限公司 一种进纸出纸的缓冲式装置
US20220127093A1 (en) * 2019-02-13 2022-04-28 Zuiko Corporation Sheet feeding device and sheet feeding method
US11597618B2 (en) * 2019-02-13 2023-03-07 Zuiko Corporation Sheet feeding device and sheet feeding method
US11737930B2 (en) 2020-02-27 2023-08-29 Curt G. Joa, Inc. Configurable single transfer insert placement method and apparatus
US11447356B2 (en) 2020-05-18 2022-09-20 Butler Automatic, Inc. System and method for aligning and joining the same sides of two web materials
US20220380160A1 (en) * 2021-05-28 2022-12-01 Renova S.R.L. Machine for producing cardboard
US11851298B2 (en) * 2021-05-28 2023-12-26 Renova S.R.L. Machine for producing cardboard

Also Published As

Publication number Publication date
JPS4955407A (sv) 1974-05-29
AU465001B2 (en) 1975-09-11
CA987025A (en) 1976-04-06
BE797046A (fr) 1973-09-20
DE2313857A1 (de) 1973-10-18
AU5348273A (en) 1974-09-19
GB1412207A (en) 1975-10-29
IT980642B (it) 1974-10-10
JPS5528982B2 (sv) 1980-07-31
CH561652A5 (sv) 1975-05-15
FR2177355A5 (sv) 1973-11-02

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