US3341139A - Apparatus and method for accumulating metallic strip and the like - Google Patents

Apparatus and method for accumulating metallic strip and the like Download PDF

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Publication number
US3341139A
US3341139A US531581A US53158166A US3341139A US 3341139 A US3341139 A US 3341139A US 531581 A US531581 A US 531581A US 53158166 A US53158166 A US 53158166A US 3341139 A US3341139 A US 3341139A
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United States
Prior art keywords
strip
coil
convolutions
abutments
rotation
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Expired - Lifetime
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US531581A
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English (en)
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Tour Harry La
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Armco Inc
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Armco Inc
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Publication date
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Priority to US531581A priority Critical patent/US3341139A/en
Priority to GB16162/66A priority patent/GB1067640A/en
Priority to BE680319D priority patent/BE680319A/xx
Priority to ES0332927A priority patent/ES332927A2/es
Application granted granted Critical
Publication of US3341139A publication Critical patent/US3341139A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C49/00—Devices for temporarily accumulating material

Definitions

  • the instant invention has to do with the solution to the problem of providing a continuous delivery of strip-usually withdrawn from a coil-to a processing line even though it is necessary to interrupt the feeding of the strip periodically in order to weld or otherwise secure the leading end of a new coil onto the trailing end of an exhausted coil.
  • movement of the two parts to be secured together must be arrested while the ends are sheared and properly aligned and welded together.
  • Another important object of this invention is to provide a strip accumulating device that can be operated without the necessity of immersing the coiled strip in a lubricant.
  • a still further object of this apparatus is to exert a minimum of back tension on the feeding line by reducing the friction resulting from the relative movement of contiguous convolutions.
  • FIGURE 1 is a somewhat diagrammatic plan view of the device for carrying out the invention with the accumulator coil in an intermediate loaded condition.
  • FIGURE 2 is an enlarged diagrammatic cross-sectional view taken on the line 22 of FIGURE 1.
  • a table having a central circular fixed portion and an annular rotatable portion.
  • the rotatable portion is provided with actuating means to initiate its rotation. Fric- Patented Sept. 12, 1967 tional contact of the strip being withdrawn from the rotatable portion maintains the rotation thereof during its periods of rotation.
  • the rotatable portion is further provided with a plurality of retractable abutments which, when in operative position, contact and restrain a number of convolutions of strip material as it is coiled on the rotatable portion of the table.
  • the fixed portion of the table is provided with an abutment or roll cage from which the coiled strip is fed from the device through a strip processing line or the like.
  • the basic principle of the invention involves the provision on the rotatable table of a coil of said strip material of a predetermined number of turns.
  • the coil will be disposed with the strip on edge and will be suitably supported and held in place on the table. Additional strip from the decoiler or from the preceding portions of the processing line is fed onto the outside of the storage coil as the table is rotated, and strip is paid off from the inside of the coil and fed to a succeeding portion of the strip processing line.
  • a predetermined number of turns in the storage coil is maintained constant.
  • the diameter of the coil will increase and the length of strip in the coil will also increase until the initial expanded condi tion' of the coil is reestablished.
  • the action of the storage coil is in effect a cyclic tightening and loosening without a change in the number of turns in the coil.
  • Rotating table 12 may be a planar surface with spaced openings, the need for which will be described later, or it may take on the appearance of a spoked wheel.
  • the latter embodiment of the rotatable table may be defined by the outer annular ring 12a and inner annular ring 12b connected by a series of radial support members 120.
  • the annular rotatable table 12 may be provided with a flanged surface 13 at its periphery which will be contacted by an actuator 14 forming part of the rotation initiating means 15, which means is adapted to be actuated by a tension limit control device, indicated generally at 30.
  • the control device 30 may comprise the fixed rolls 31 and 32 and the movable roll 33, the device having a tension spring 34 biasing the roll 33- relative to the micro switch 35.
  • the tension on the exiting strip increases, as indicated at 29, and roll 33 is moved toward the switch 35, so that when contact is made with the switch 35, the rotation initiating means 15 is actuated and rotation of the table is begun.
  • means 15 may be any appropriate device suitable to kick the table and overcome its inertial resistance to rotate.
  • it may be a prime mover, a solenoid operated kicker, or a pneumatically operated kicker and may engage the table through a ring gear, a ratchet wheel, or a one-way clutch.
  • a prime mover may be used to initiate rotation of the table, whereupon rotational movement of the table will be maintained by the pulling movement of the exiting strip supplemented by the motor which, under normal operating conditions, will supply a portion of the torque.
  • the fixed portion of the table 10 is provided with an abutment means in the form of a roll cage constituted of a plurality of rollers 17 mounted on vertical axes disposed in a circle.
  • a pay-off roll 18 which is preferably cylindrical in configuration with its axis inclined from the vertical at an angle suitable to provide clearance of the exiting strip over the roll cage.
  • the pay-off roll may be frusto conical in configuration with its smallest diameter lowermost and mounted perpendicular to the fixed table.
  • the exiting strip will be initially directed upwardly in the manner illustrated (FIG. 2), whereupon its path of travel may be altered as desired by means of suitable sets of guide rolls disposed to provide any desired change in its path of travel.
  • the rotatable table 12 is provided with a plurality of retractable coil restraining abutments or fingers 16. These abutments are pivotally mounted below the surface of table 12 or the plane formed by the upper surfaces of radial support members 12c.
  • the abutments 16 are pivotally mounted for movement from an inoperative retracted position to an upwardly projecting operative position and are moved by air cylinders 6 or similar devices suitable for the purpose.
  • the abutments are spring biased to the inoperative position and air cylinders 6 are connected to a rotating air joint 9 through conduits 8 to which air under pressure is supplied from a source P.
  • the abutments 16 are maintained in the upwardly extending or operative position and hence interrupt the surface of rotatable table 12 so as to restrain the outermost set of convolutions 27 as they are wound onto the coil. Retracting movement of the abutments 16 is controlled by the strip edge itself contacting sensing elements 4 which contact the collapsed inner set of convolutions and act to release the abutments as the last of the inner convolutions is withdrawn from the inner portion of the coil.
  • sensing elements will be operatively connected to the valve means 7 which may be a solenoid actuated valve operative to release the air pressure to the cylinders 6.
  • the abutments Upon being retracted, the abutments no longer restrain the collapsing movements of said outermost convolution 27 of the coil against the rollers 17.
  • the release of the outermost convolutions is not an explosive type reaction but more in the nature of a restrained inward peeling of one convolution, then another. It is advisable to provide the hold-down roller to contact the uppermost edge of the dispensing innermost convolutions 28 to maintain proper positioning on the table and contact therewith so that the friction created by contact of the strip with the table 12 will maintain the rotation thereof as the strip is withdrawn. Rotation will automatically stop when the innermost convolutions are exhausted and the retracted abutments permit the collapsing of the outermost convolutions.
  • the braking device 3 which is arranged to engage the contact surface 13 may be actuated, as by means of the sensing means 4, to stop the rotation of the table.
  • the strip being processed comes from a coil payoff means (not shown) which may be a decoiler or some preceding portion of the strip processing line, the strip being advanced therefrom as indicated by the arrow 19.
  • a tension limit control device indicated generall at 20, connected to the braking device 3, which acts as a stop switch for table 12.
  • the control device may comprise the fixed rolls 21 and 22 and movable roll 23 urged away from the fixed rolls by a spring 24.
  • a normally open micro switch, indicated at 25, is arranged to be contacted upon movement of the roll 23.
  • the strip is threaded around the rolls 21, 22 and 23, in the manner shown, and fed onto the storage coil at 26.
  • the storage coil itself is indicated generally at 27.
  • the switch 25 will be actuated and the rotation of the table will be temporarily halted. At the same time, the switch 25 will act to close the valve 7 and hence vent the cylinders 6, thereby freeing the abutments to retract under the influence of their associated spring means. The accumulating convolutions of the coil are thus released for collapsing movement, and there is no interruption to the output feeding of the strip even though there has been a break in the incoming strip.
  • the innermost dispensing convolution, indicated at 28a, is peeled off the inside of the convolutions 28 and caused to pass around the rolls 17 of the roll cage and exit between an adjacent pair of the rolls, indicated at 17a, whereupon the strip passes around the pay-01f roll 18 and is drawn from the device into a post strip processing line.
  • Such interruption will also cause the abutments 16 to retract permitting the accumulating convolutions 27 to converge inwardly, so that the strip continues to be drawn from the device around the payoff roll 18. Since the table is no longer rotating the innermost convolution of the accumulating convolutions 27 will be contracted and peeled inwardly so as to collapse against the cage of rolls 17. As the feed out continues, succeeding convolutions collapse and slide radially inward as the coil is in effect tightened. In so doing, and due to the stationary condition of the table, the coil will retain the original number of turns but the circumference of the collapsing convolutions will be reduced, thereby providing continued strip output. This action continues until all the accumulating convolutions of the coil have collapsed onto the roll cage. It will be evident that as the successive convolutions or turns col-.
  • the tension sensing device 30 will cause the rotation initiating means 15 to kick table 12 to resume its rotation.
  • the now collapsed accumulating convolutions of the coil become the dispensing convolutions.
  • the retracted abutments 16 will move to the operative position
  • Table 12 is supplying the post processing unit at a rate of 30 ft./min. and contains ten collapsed dispensing convolutions having a mean circumference of 18 ft., and ten accumulating convolutions, averaging about 50 ft. in circumference. At this point the total accumulation is 680 ft. This total may vary, but the predetermined number of convolutions, twenty in this example, will remain constant.
  • the total strip accumulated will be increased by the difference between the respective circumferences of the dispensing and accumulating convolutions. In the example given, the increase is approximately thirty-two feet. This build up will continue until rotation of table 12 is halted.
  • the maximum diameter of the storage coil will be predetermined in accordance with the requirements of use, and the diameter of the table will be sized accordingly. Normally, the size of the fully expanded storage coil will be such that the outer or accumulating convolutions will contain at least a unit length of strip, such as the entire contents of a standard length coil.
  • the accumulator will be essentially automatic in operation and will cycle between the loaded and collapsed conditions of the storage coil. While normally the control elements 30 and 20 will coact to start and stop the cycle, it is also contemplated that the unit could be stopped at any time or place in its operating cycle.
  • a sensing device 36 with a spring biased arm 37 could be positioned to sense the collapse of the outermost convolution in the accumulating coil set, such sensing means acting to energize the rotation initiating means 15.
  • manual controls would be provided for use when needed.
  • the delay time which may be provided will depend upon a number of variables, such as strip gauge, strip speed, number of turns in the storage coil, and the relative diameters of the expanded and collapsed coil.
  • a coil of strip 17 inches wide having a thickness of 0.060 inch is wound into a coil having 20 turns.
  • the roll cage diameter or inside diameter of the collapsed coil is 6 feet and the average diameter of the coil in the expanded condition is 11 feet.
  • a strip speed in the processing line of 50 feet per minute a delay time of more than 6 minutes is achieved.
  • the supply of strip to the device may be interrupted for more than 6 minutes while the strip continues to be supplied to the processing line at a constant speed of 50 feet per minute.
  • a run of 150 feet would be required. It will be clear from the foregoing example that the device of the present invention occupies a very small area since the outside diameter of the expanded storage coil is on] about 11 feet.
  • N number of turns in coil
  • V velocity of line output
  • D mean diameter of accumulating convolutions
  • d mean diameter of collapsed dispensing convolutions
  • tension responsive switch means may be provided to stop feeding movement of the strip at 29 in the event of malfunction in the operation of the table 1.2.
  • control device 20 is exemplary only and that other forms of sensing and control devices may be employed.
  • a strip end detector could be employed to sense the trailing end of the strip supply.
  • Such device could comprise a photoelectric cell or a spring biased switch arm riding in contact with a surface of the strip.
  • this invention has in effect divided the convolutions of the coil so that the number of laps sliding over one another has been greatly reduced during each operating cycle. Dry operation is therefore facilitated.
  • one skilled in the art may find it appropriate for a particular application to subject or even immerse the coil in a lubricant.
  • Many applications will suggest themselves to those skilled in the art where the apparatus and method of the present invention could be used to provide a time delay. Among such applications, for example, would be for what might be termed continuous box annealing, wherein the coil could be disposed in a furnace and every element of the strip would be subject to the furnace temperature for a predetermined length of time.
  • the strip accumulating apparatus of claim 3 including inner and outer annular rings connecting the ends of said radial support members.
  • the strip accumulating apparatus of claim 2 wherein the means for stopping rotation of the table includes sensing means operative to stop rotation of said table when the trailing end of the strip from the pre-processing unit is reached.
  • the strip accumulating device of claim 6 including a cylindrically shaped pay-off roll angled from the vertical and disposed in the center of said series of rolls.
  • the strip accumulating apparatus of claim 2 wherein the means to initiate rotation of the table includes tension sensing means operative to start rotation of said table when a predetermined tension on the exiting strip is reached.
  • the strip accumulating device of claim 2 wherein the means to initiate rotation of the table includes a contact sensing means operative to start rotation of said table when contact with the collapsing strip is broken.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Replacement Of Web Rolls (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
US531581A 1966-03-03 1966-03-03 Apparatus and method for accumulating metallic strip and the like Expired - Lifetime US3341139A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US531581A US3341139A (en) 1966-03-03 1966-03-03 Apparatus and method for accumulating metallic strip and the like
GB16162/66A GB1067640A (en) 1966-03-03 1966-04-13 Method and apparatus for accumulating metalic strip and the like
BE680319D BE680319A (zh) 1966-03-03 1966-04-29
ES0332927A ES332927A2 (es) 1966-03-03 1966-10-29 Procedimiento y aparato para suministrar tiras en forma continua.

Applications Claiming Priority (1)

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US531581A US3341139A (en) 1966-03-03 1966-03-03 Apparatus and method for accumulating metallic strip and the like

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US3341139A true US3341139A (en) 1967-09-12

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BE (1) BE680319A (zh)
ES (1) ES332927A2 (zh)
GB (1) GB1067640A (zh)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406600A (en) * 1966-04-27 1968-10-22 United States Steel Corp Method of removing material from the inside of a coil
US3506210A (en) * 1967-10-20 1970-04-14 Armco Steel Corp Compact strip accumulator
US3510241A (en) * 1966-11-16 1970-05-05 Allied Chem Coloration of aromatic polyesters
US3628742A (en) * 1970-07-08 1971-12-21 Armco Steel Corp Drive system for strip accumulator
US3782662A (en) * 1971-02-24 1974-01-01 Armco Steel Corp Simplified strip accumulation
US3885748A (en) * 1974-03-28 1975-05-27 Loopco Industries Take-out arbor for a strip accumulator
US3999718A (en) * 1974-08-02 1976-12-28 Societe De Constructions Mecaniques De Creil-Comec Spiral accumulator for a flexible metal strip
US4012004A (en) * 1975-01-17 1977-03-15 Sylvain Tonellato Device for the accumulation of materials in strips
US4473193A (en) * 1983-01-13 1984-09-25 Guild International Inc. Helical feed-in mechanism for strip accumulator
US4569487A (en) * 1983-06-16 1986-02-11 Dr. Weusthoff Gmbh Band storing machine
US4579169A (en) * 1980-04-29 1986-04-01 Southwire Company Continuous casting band system
WO1995006528A1 (de) * 1993-09-01 1995-03-09 Voest-Alpine Industrieanlagenbau Gmbh Bandspeicher
FR2751629A1 (fr) * 1996-07-24 1998-01-30 Protection Decoration Conditio Accumulateur tampon pour une ligne de traitement en continu utilisant un produit en forme de ruban fourni par une bobine
EP1167258A2 (de) * 2000-06-21 2002-01-02 SMS Demag Aktiengesellschaft Bandspeicher für Metallbänder, insbesondere Spiralbandspeicher für dicke Stahlbänder
RU2481905C1 (ru) * 2011-09-22 2013-05-20 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Спиральный накопитель полосы
CN113401698A (zh) * 2021-06-18 2021-09-17 成都新图新材料股份有限公司 一种废弃卷材收卷机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2318316A (en) * 1941-06-19 1943-05-04 Ibm Storage mechanism
US2706629A (en) * 1951-06-07 1955-04-19 Cailliot Serge Apparatus for continuously paying out a relatively long band
US3265321A (en) * 1962-06-28 1966-08-09 Schloemann Ag Coil expander

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2318316A (en) * 1941-06-19 1943-05-04 Ibm Storage mechanism
US2706629A (en) * 1951-06-07 1955-04-19 Cailliot Serge Apparatus for continuously paying out a relatively long band
US3265321A (en) * 1962-06-28 1966-08-09 Schloemann Ag Coil expander

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406600A (en) * 1966-04-27 1968-10-22 United States Steel Corp Method of removing material from the inside of a coil
US3510241A (en) * 1966-11-16 1970-05-05 Allied Chem Coloration of aromatic polyesters
US3506210A (en) * 1967-10-20 1970-04-14 Armco Steel Corp Compact strip accumulator
US3628742A (en) * 1970-07-08 1971-12-21 Armco Steel Corp Drive system for strip accumulator
US3782662A (en) * 1971-02-24 1974-01-01 Armco Steel Corp Simplified strip accumulation
US3885748A (en) * 1974-03-28 1975-05-27 Loopco Industries Take-out arbor for a strip accumulator
US3999718A (en) * 1974-08-02 1976-12-28 Societe De Constructions Mecaniques De Creil-Comec Spiral accumulator for a flexible metal strip
US4012004A (en) * 1975-01-17 1977-03-15 Sylvain Tonellato Device for the accumulation of materials in strips
US4579169A (en) * 1980-04-29 1986-04-01 Southwire Company Continuous casting band system
US4473193A (en) * 1983-01-13 1984-09-25 Guild International Inc. Helical feed-in mechanism for strip accumulator
US4569487A (en) * 1983-06-16 1986-02-11 Dr. Weusthoff Gmbh Band storing machine
WO1995006528A1 (de) * 1993-09-01 1995-03-09 Voest-Alpine Industrieanlagenbau Gmbh Bandspeicher
US5575434A (en) * 1993-09-01 1996-11-19 Voest-Alpine Industrieanlagenbau Gmbh Strip accumulator
FR2751629A1 (fr) * 1996-07-24 1998-01-30 Protection Decoration Conditio Accumulateur tampon pour une ligne de traitement en continu utilisant un produit en forme de ruban fourni par une bobine
EP1167258A2 (de) * 2000-06-21 2002-01-02 SMS Demag Aktiengesellschaft Bandspeicher für Metallbänder, insbesondere Spiralbandspeicher für dicke Stahlbänder
EP1167258A3 (de) * 2000-06-21 2003-09-17 SMS Demag Aktiengesellschaft Bandspeicher für Metallbänder, insbesondere Spiralbandspeicher für dicke Stahlbänder
RU2481905C1 (ru) * 2011-09-22 2013-05-20 Открытое акционерное общество "Электростальский завод тяжелого машиностроения" Спиральный накопитель полосы
CN113401698A (zh) * 2021-06-18 2021-09-17 成都新图新材料股份有限公司 一种废弃卷材收卷机

Also Published As

Publication number Publication date
BE680319A (zh) 1966-10-03
GB1067640A (en) 1967-05-03
ES332927A2 (es) 1967-10-01

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