US3382964A - Transport system for rolling mills and the like - Google Patents

Transport system for rolling mills and the like Download PDF

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Publication number
US3382964A
US3382964A US515637A US51563765A US3382964A US 3382964 A US3382964 A US 3382964A US 515637 A US515637 A US 515637A US 51563765 A US51563765 A US 51563765A US 3382964 A US3382964 A US 3382964A
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Prior art keywords
rollers
transport system
array
transport
roller
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Expired - Lifetime
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US515637A
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English (en)
Inventor
Bonhoff Willi
Ernst L Ullmann
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Beteiligungs und Patentverwaltungs GmbH
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Beteiligungs und Patentverwaltungs GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/008—Rollers for roller conveyors

Definitions

  • Our present invention relates to a transport system for rolling mills and the like whereby a plate, block, bloom, billet or ingot of a metal such as steel is repeatedly passed between a pair of working rolls for compression to reduce the cross section of the body, elongate it and/or impart a desired profile to the finished shape. More particularly, this invent-ion relates to an improved transport-roller arrangement by means of which the workpiece can be reciprocated toward and away from the working rolls.
  • roller conveyor with powered transport rollers which are rotatable about axes transverse to the direction of displacement of the ingot or billet (e.g. generally horizontal axes) for displacing the workpiece when it rests upon the rollers.
  • the drive means for the transport rollers can be reversibly operable in order to displace the workpiece toward and away from the working rolls or another processing station.
  • the means for reorienting latelike work-pieces which cannot readily be flipped over or onto a side, can include arrays of frustoconical transport rollers interleaved along the transport path and rotatable in opposite senses so that the opposite edges of a sheet are engaged by respective sets of rollers and driven thereby in opposite directions. It has been found, in practice, that frustoconical rollers are disadvantageous for the conveying or transport of ingots or other blocklike bodies and rapidly deteriorate when used for the rolling of workpieces of the latter type.
  • a further object of this invention is to provide a trans port system for rolling mills and the like which eliminates the need for rollers of special configuration and which is substantially more efficient and versatile than those provided heretofore.
  • a transport system which comprises a succession of transport rollers with generally parallel axes and drive means for rotating the rollers alternately in opposite senses, means being provided for pivoting the cylindrical rollers at their longitudinal axes for swinging movement about respective axes perpendicular thereto and parallel to the transport path.
  • Adjacent rollers are so pivoted at one of their opposing extremities while the other extremity is provided with means for elevating that extremity to slope the alternating rollers in opposite di- 3,332,964 Patented May 14, M68
  • the rollers When the opposing extremities of alternate rollers are raised by the actuating device, the rollers can be driven in the same sense for similar advance or retraction of plate-like workpieces by engagement with the edges of the body parallel to the direction of displacement thereof for corresponding advance or retraction of the body.
  • alternate rollers so positioned are driven in opposite senses, the plate-like workpiece is swung about a generally vertical axis.
  • the pivotal means for each of the rollers is formed by a self-aligning (pendulum) bearing disposed at a fixed location at this extremity of each roller while the other extremity is journaled in a vertically movable self-aligning or pendulum-bearing whose bearing housing is elevatable by the actuating means.
  • the drive means for the rollers preferably are connected with the axles thereof at the vertically fixed pivot bearings, preferably through the intermediary of universal join-ts or similar means.
  • the actuating means can be a hydraulic piston-and-cylinder arrangement with the elevatable bearings being mechanically or hydraulically coupled together in the respective arrays for simultaneous actuation.
  • the eevat-ing means can include levers, eccentrics and the like and a common frame can be provided for the actuatable bearings of each array upon which the elevating means can act. In the latter case, only a single elevating mechanism is required for each array.
  • the elevating means includes stop means in the form of abutments for the extreme vertical positions of the elevata-ble bearings thereby ensuring that the rollers of each array are substantially coplanar in their elevated and rolled positions.
  • rollers driven in the same sense of each array can have a common drive source or individual drives; when a single drive is provided for all of the rollers of a respective array, a mechanical transmission means for distributing the driving power (e.g. a gear transmission) thereby effecting and saving in the number of motors required and ensuring a good distribution of the load upon the drive elements.
  • a mechanical transmission means for distributing the driving power e.g. a gear transmission
  • FIG. 1 is a plan view of a portion of a transport system in accordance with the present invention, partly broken away;
  • FIG. 2 is a cross-sectional view taken generally along the line ll-II of FIG. 1;
  • FIG. 3 is a cross-sectional view taken generally along the line III-III of FIG. 1;
  • FIG. 3A and FIG. 3B are detail views of the bearings at the ends of the rollers
  • FIG. 4 is a diagrammatic plan view of a system in which the rollers have individual drives disposed at one side of the transport system;
  • FIG. 5 is a similar view wherein respective drive means are provided for each array.
  • FIG. 6 diagrammatically illustrates a further modification of the transport system in plan view.
  • FIGS. l3, 3A and 38 we show a transport system which comprises two interleaved arrays of transport rollers 1 and 2, respectively, with the rollers 1 and 2 of the array longitudinally spaced apart and alternating along the transport path.
  • the rollers in the unactuated position of the apparatus, lie in a common horizontal plane and are mutually parallel.
  • Each of the rollers 1 and 2 is generally cylindrical and provided with the usual tapered extremities which converge to the axle portions 16, 17 of the roller.
  • the axle portions 16 and 17 of each roller are journaied in Self-aligning bearings which permit angular displacement of the respective extremity along an axis generally designated 18 (FIGS. 1 and 3A) and extending in the horizontal plane perpendicular to the respective longitudinal axis of the roller in the direction of the transport path.
  • the self-aligning bearings 3, 4, which may be of any conventional type permitting the pivotal movement described, can as seen in FIGS. 3A and 3B comprise an inner race 19 mounted on the axle portion 16 or 17 and received within the outer race 20.
  • the raceway 21 of the latter is a spheroidal surface centered on the intersection between the pivotal axis 18 and the longitudinal u axis of the respective roller and is rollingly engageable by a pair of circumferential arrays of rollers 22, 23.
  • the rollers 22 and 23 of each array are of generally parallel-shaped configuration with curvatures corresponding to that of the raceway 21 and have respective axes which converge toward the longitudinal axis of the roller in opposite axial directions so as to define the generatrices of a double-apex cone.
  • the inner raceways 24, 25 are of corresponding spheroidal curvature.
  • the self-aligning bearing permits such swinging movement while maintaining its journaling action.
  • the bearings 4 on opposite ends of adjacent rollers 1 and 2 are fixedly positioned on the pedestals 26 and 27 while the bearing 3 at the other extremity of each roller 1 and 2 is vertically shiftable by a hydraulic pistonand-cylinder arrangement 5.
  • the respective bearings 3 are raised to bring the upper surfaces of the rollers 1 and 2 into the positions indicated by dot-dash lines 1 and 2' (FIG. 2) so that a plate-like workpiece 30 is supported at its opposite edges. Stops 5', 5 define the upper and lower positions of the hydraulic arrangements 5.
  • Each of the rollers 1 and 2 has its corresponding axle portion 17 at the vertically fixed bearing 4, fitted with a universal joint 6 by means of which power can be transmitted from a shaft 7 to the respective roller 1 or 2 in either position (i.e. horizontal or inclined) on the respective roller.
  • the rollers 1 and 2 are driven in the identical sense, say, clockwise viewing the array of FIG. 1 from the right, the plate 30 will be advanced in the direction of arrow 31 while a reversed rotation of all of the rollers will displace the plate-like workpiece in the opposite direction (arrow 32).
  • each of the shafts 7 is provided with a respective universal joint 7 remote from its universal joint 6 and is driven by a respective motor 10, the motors 10 being connected to a control 35 having three positions corresponding to energization of the motors 10 to drive all of the rollers in the forward sense (forward position), all of the rollers in the opposite sense (reverse position) or one of the arrays in one sense and the other array in the opposite sense to rotate the plate-like workpiece (rotate position) as previously described.
  • the couplings 6 are all provided in one side of the transport path so that the axle portion 17 alternately extends through bearings 3 and 4 of the successive rollers.
  • a single drive 8, 9 is provided for each of the arrays of rollers 1 and 2 and is coupled with them via a mechanical transmission 3' and 9 constituted by a respective gear train.
  • the outputs 8", 9 assigned to each of the respective rollers are universally coupled to the respective drive shaft 7.
  • the linkage shafts 7 are omitted and the motors 11, which can be operated by the control 35, are attached to the outer races 20 of the bearings 3 and 4 along the righthand side of the system for driving the respective rollers 1 and 2.
  • the armatures of these motors can be keyed to the respective axle portions in the usual manner for flanged motors.
  • a transport system for rolling mills and the like comprising a plurality of spaced-apart generally parallel longitudinally extending rollers having respective longitudinal axes of rotation; means at one end of some of said rollers and at the other end of others of said rollers for supporting the respective rollers for swinging movement about respective pivotal axes perpendicular to the respective longitudinal axis at said ends; actuating means for swinging said rollers about said pivotal axes between a first position wherein the longitudinal axes of said rollers lie in a plane and a second position wherein the longitudinal axes of said rollers are inclined to said planes; and drive means coupled with said rollers for selectively rotating same about said longitudinal axes in the same and opposite senses.
  • each of said rollers is provided with a pair of journaled extremities, each of said extremities being mounted in a respective self-aligning bearing, one of the self-aligning bearings of each roller being vertically fixed and the other self-aligning bearing of each roller being vertically shiftable, said actuating means including respective elevating means for the vertically shiftable self-aligning bearings of said some of said rollers and for the self-aligning bearings of said others of said rollers.
  • each of said drive shafts is provided with a respective motor, further comprising control means for operating the motors of each array in the same sense.
  • rollers are generally cylindrical and the rollers of each array are rotatable in common in the same sense but in a sense opposite that with which the rollers of the other array are rotated for swinging a plate-like workpiece on said rollers about a generally vertical axis.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
US515637A 1964-12-24 1965-12-22 Transport system for rolling mills and the like Expired - Lifetime US3382964A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0079884 1964-12-24

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US3382964A true US3382964A (en) 1968-05-14

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US515637A Expired - Lifetime US3382964A (en) 1964-12-24 1965-12-22 Transport system for rolling mills and the like

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US (1) US3382964A (enrdf_load_html_response)
FR (1) FR1461050A (enrdf_load_html_response)
GB (1) GB1120829A (enrdf_load_html_response)
SE (1) SE302279B (enrdf_load_html_response)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730329A (en) * 1970-06-11 1973-05-01 Davy & United Eng Co Ltd Roller table
US3946855A (en) * 1973-06-18 1976-03-30 Lever Brothers Company Device for delivering items at certain intervals
US3980170A (en) * 1974-12-23 1976-09-14 Reliance Electric Company Drive system for an annealing lehr
US4257320A (en) * 1979-05-14 1981-03-24 Brown International Corporation Whole fruit peel oil extractor
US4694636A (en) * 1981-03-23 1987-09-22 Burlington Industries, Inc. Horizontal bundling with variable entry and exit conveyors
US4921091A (en) * 1988-05-31 1990-05-01 H. Krantz Gmbh & Co. Adjustable draw roller assembly
US5104112A (en) * 1990-11-21 1992-04-14 Pitney Bowes Inc. Document feeder having reversibly positioned direct drive separator assembly motor
US6373017B1 (en) * 1993-06-15 2002-04-16 Kawasaki Steel Corporation Continuous hot rolling mill with metal block conveying apparatus
US20040007105A1 (en) * 2002-07-10 2004-01-15 Brown International Corporation Roller drive system for a fruit oil extractor
US8579105B2 (en) * 2009-11-13 2013-11-12 Dematic Corp. Roller conveyor system and axle retainer for use in mounting the rollers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201522549D0 (en) * 2015-12-21 2016-02-03 Primetals Technologies Ltd Roller table apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1114621A (en) * 1914-03-25 1914-10-20 Harry A Lewis Roller-table for rolling-mills.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1114621A (en) * 1914-03-25 1914-10-20 Harry A Lewis Roller-table for rolling-mills.

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3730329A (en) * 1970-06-11 1973-05-01 Davy & United Eng Co Ltd Roller table
US3946855A (en) * 1973-06-18 1976-03-30 Lever Brothers Company Device for delivering items at certain intervals
US3980170A (en) * 1974-12-23 1976-09-14 Reliance Electric Company Drive system for an annealing lehr
US4257320A (en) * 1979-05-14 1981-03-24 Brown International Corporation Whole fruit peel oil extractor
US4694636A (en) * 1981-03-23 1987-09-22 Burlington Industries, Inc. Horizontal bundling with variable entry and exit conveyors
US4921091A (en) * 1988-05-31 1990-05-01 H. Krantz Gmbh & Co. Adjustable draw roller assembly
US5104112A (en) * 1990-11-21 1992-04-14 Pitney Bowes Inc. Document feeder having reversibly positioned direct drive separator assembly motor
US6373017B1 (en) * 1993-06-15 2002-04-16 Kawasaki Steel Corporation Continuous hot rolling mill with metal block conveying apparatus
US20040007105A1 (en) * 2002-07-10 2004-01-15 Brown International Corporation Roller drive system for a fruit oil extractor
US6994018B2 (en) * 2002-07-10 2006-02-07 Brown International Corporation Roller drive system for a fruit oil extractor
US8579105B2 (en) * 2009-11-13 2013-11-12 Dematic Corp. Roller conveyor system and axle retainer for use in mounting the rollers

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Publication number Publication date
SE302279B (enrdf_load_html_response) 1968-07-15
FR1461050A (fr) 1966-12-02
GB1120829A (en) 1968-07-24

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