US3746146A - Cooling beds - Google Patents

Cooling beds Download PDF

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Publication number
US3746146A
US3746146A US00202917A US3746146DA US3746146A US 3746146 A US3746146 A US 3746146A US 00202917 A US00202917 A US 00202917A US 3746146D A US3746146D A US 3746146DA US 3746146 A US3746146 A US 3746146A
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United States
Prior art keywords
grating
support
control
rollers
control discs
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Expired - Lifetime
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US00202917A
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English (en)
Inventor
O Buchheit
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Moeller and Neuman GmbH
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Moeller and Neuman GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B43/00—Cooling beds, whether stationary or moving; Means specially associated with cooling beds, e.g. for braking work or for transferring it to or from the bed
    • B21B43/02—Cooling beds comprising rakes racks, walking beams or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G25/00—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement
    • B65G25/02—Conveyors comprising a cyclically-moving, e.g. reciprocating, carrier or impeller which is disengaged from the load during the return part of its movement the carrier or impeller having different forward and return paths of movement, e.g. walking beam conveyors

Definitions

  • a cooling bed for rolled material has a single driving shaft from which the vertical and the horizontal move ments of a first support grating relatively to a second support grating are derived.
  • the driving shaft carries a first group of control discs with control cams for effecting the vertical movement and a further group of control discs with control cams for effecting the horizontal movement of the first support grating the control cams permitting the movement processes to be so controlled that the rolled material is extremely carefully treated during the transverse conveyance thereof.
  • the solution of this problem moreover leads to a significant simplification of the drive in particular in respect of lubrication.
  • the invention consists in that the rotating control elements are control discs which are provided with control cams, that the rod members actuated by a first group of control discs for effecting the vertical support grating movements consist of push rods which are provided with lifter rollers and support rollers the lifter rollers being in positive engagement with surfaces which are inclined downwardly towards the control discs and the support rollers being freely rotatable independently of the lifter rollers and the support grating being mounted on the support rollers in a freely movable manner, and that a second group of control discs are connected to further rollers for effecting horizontal support grating movements, the further rollers being mounted in cantilever-like bearing blocks of the displaceable support grating.
  • control discs provided with control cams the movement characteristic of the displaceable support grating or gratings can be freely selected.
  • the exclusive use of rollers co-operating with the control discs serves for simplification of the cooling bed drive a particular advantage being provided by the fact that the lifter rollers of the pushrods resting on the surfaces which are inclined downwardly towards the control discs of the first group are continuously in positive connection with their control discs owing to the horizontal component of the weight of the support grating.
  • the control discs for the vertical stroke of the support grating are fixed on the driving shaft preferably always in pairs and are offset by relatively to each other.
  • the two push-rods associated with each pair of control discs extend in this case in opposite directions from the driving shaft.
  • rollers for the horizontal stroke of the support grating which are actuated by the second group of control discs may be positively guided in ashape following manner in a cam groove of the control discs.
  • the invention provides that the cooling bed is inclined towards the driving shaft and the horizontal weight component resulting from the inclination of the support grating which is freely movable on the support rollers is utilised for a force transmitting contact between the control discs and the rollers co-operating with the latter.
  • a further construction of the invention provides that the second group of control discs for affecting the horizontal storke of the displace able support grating is provided with cam portions which extend concentrically to the driving shaft and each of which corresponds in time to a cam portion associated with the first group of control discs and effecting the vertical stroke of the displaceable support grating. It is ensured thereby that during the transfer and delivery of the rolled material by means of the support grating the drive for the horizontal oscillatory movement is ineffective. This is advantageous in particular during conveyance of sheets or plates over the cooling bed in order to avoid scratch marks.
  • the first group of control discs for effecting the vertical stroke of the movable support grating may have two camportions which extend concentrically to the driving shaft and which correspond to a position in which both support gratings are at the same height level. It is attained thereby that in continuous operation of the cooling bed, the displaceable support grating remains for a short period at the same height position with the stationary support grating during its vertical stroke both in the upward movement as well as in the downward movement, so that the take-off and the deposition of the rolled material are effected in a shock free manner, since the cam track of the control discs on both sides of the concentric cam portions can be produced to ensure a smooth transition to the vertical movement.
  • the cooling bed is preferably stopped in the position in which both support gratings are of the same level, the concentric cam portions of the control discs having an advantageous effect inasmuch as the rotary position of the driving shaft at the instant-of stopping need not be accurately defined.
  • FIG. 1 illustrates a cross-section transversely to the single driving shaft showing one control disc of each of the first and second group of control discs with oppositely extending push rods
  • FIG. 2 illustrates a section along the line ll II in FIG. 1 through a lifter roller and support roller unit
  • FIG. 3 is a simplified modification of FIG. 1 for an in clined cooling bed arrangement
  • FIG. 4 is a diagrammatic illustration of the movement phases of the displaceable support grating during one operating cycle
  • FIG. 5 illustrates various rotary positions I to VI of a control disc of the first group for effecting the vertical stroke
  • FIG. 6 illustrates various rotary positions I to VI of a further control disc of the first group which disc is offset by l80 relatively to the control disc according to FIG. 4, and
  • FIG. 7 illustrates various rotary positions I to VI of a control disc of the second group for effecting the horizontal stroke of the displaceable support grating.
  • a cooling bed comprises a displaceable support grating 10 which is in two sections connected together by the rods 18 and a stationary sup- I port grating 20 support bars 21 of which latter have support bars 21.
  • Each of the sections of the support grating 10 furthermore comprises cross-members 12 which extend transversely to the lifter bars 11 and pairs of which are connected together by means of longitudinal members 13.
  • the cross members 12 are supported at intervals on upright members 15 which are terminated by lower horizontal support faces 15a.
  • the lifter bars 11 are carried by the understructure formed by the members 12, I3, 15 by means of vertical members 14.
  • the stationary support grating comprises transverse supports 22, upright supports and vertical supports24; the up right supports 25 rest on the foundation and carry inwardly directed mounting blocks 26 with pairs of guide rollers 27 between which extend the outer upright members 15 of the displaceable support grating 10.
  • the displaceable support grating 10 In order to convey rolled plates, sheets, rods or bars over the cooling bed, the displaceable support grating 10 must be lifted, moved horizontally, lowered, and returned again into the starting position by a horizontal return stroke, as indicated by the dash dotted line in FIG. 4.
  • a single driving shaft 30 extends transversely to the lifter bars 11 and carries a numbered of control discs provided with control cams, the number depending upon the width of the cooling bed.
  • the foremost control disc 32 in FIG. 1 is a control discof the second group for effecting the horizontally oscillatingmovement of the support grating 10 and has'a cam groove 320 by which a guide roller 36 is controlled which is mounted in a cantilever-like bearing block 34.-Each bearing block 34 is attached to a longitudinal member 13 of the displacable support grating 10 and the two understructure units 12, l3, l4, 15 according to FIG.
  • a control disc 32 is illustrated in FIG. 7 in various rotary positions, as will still be explained in detail.
  • control disc 40 associated with the first group for effecting the vertical stroke of the support grate 10.
  • the outer cam track of this control disc is in force transmitting contact with a lifter roller 42 of a push rod 44 because the lifter roller 42 rests on a surface 43 which is downwardly inclined towards the driving shaft 30.
  • a lifter roller 46 mounted at the outer end of the push rod 44 rests on a surface 47 which is inclined in the same sense.
  • the lifter rollers 42 and 46 as may be seen from FIG.
  • a similar roller arrangement is provided also in the region of the lifter rollers 42 at the other or driving end of the push rod 44. It is preferable to provide at this location additionally a yet further independently mounted roller which has contact exclusively with the control disc 40 and serves as feeler roller. Since there is no need for each of the roller arrangements at the two ends to be mounted on the same axis it is conceivable that a lug (not illustrated) is connected to the shaft 42a of the lifter roller 42 and supports the sensing roller referred to at its free retilinear end.
  • roller arrangement 49 actuated thereby is visible as well as a further push rod 52 which is disposed in opposition to the push rod 44 and which has a rearward roller arrangement 54, wherein the roller arrangements 49 and 54 are similar to the roller arrangements of the push rod 44, i.e., they are provided similarly with lifter rollers which run on surfaces 51 and 55 which are downwardly inclined towards the driving shaft 30, and with support rollers 48 which co-operate with support faces 15a of upright members 15.
  • FIG. 5 and FIG. 6 illustrate the control disc 40 with the roller 42 and the inclined surface 43 shown in FIG. 1, whereas FIG. 5 illustrates the control disc 50 which is offset relatively thereto and is provided with the roller 49 aned the inclined surface 51 for driving the oppositely disposed push rod 52.
  • FIG. I illustrates a control disc 32 of the second group with the control cam groove 32a and the positively guided roller 36 in various rotary positions I to VI, wherein position I illustrates the starting position in which the lifter bars 11 of the displaceable support grating are in the same height position with the support bars 21 of the stationary support grating 20.
  • the rotary positions II to IV differ from the starting position by the angles 30, 60, and so on stated in the figure.
  • each control disc 32 of the second group for effecting the horizontal stroke is provided according to the invention with two cam positions 32aa and 32ab which extend concentrically to the driving shaft 30 and which are indicated at position I in FIG. 7 by a heavy line, each cam portion extending over a rotary angle of approximately 60.
  • roller 36 remains unaffected in its respective position when one of the cam portions 32 or 32ab comes into contact with the roller 36 during the rotation of the driving shaft 30, because these cam portions cannot initiate a control stroke owing to their concentricity with the shaft 30.
  • the control discs 40, 50 of the first group for effecting the vertical stroke of the displaceable support grating are, according to the invention, also provided with two cam portions 40a, 40b and 50a, 50b, respectively which extend concentrically to the driving shaft 30 and which correspond to a position in which both gratings l0 and have the same height level, i.e., they are in phase with the cam portions 32aa and 3241b of the control discs 32 although the latter extend preferably over a rotary angle of only l0, accordingly a vertical stroke can start while the horizontal drive is still ineffective, and the stroke can start smoothly because the transition from the concentric cam portions 40a, 40b and 50a, 50b to the adjacent cam regionswhich effect the displacement of the rollers 42 and 49 and thus the vertical stroke of the displaceable support grating upwardly or downwardly can be rendered substantially impact free.
  • the points I TO VI relate to any location on the support grating, such location attaining these points in the various rotary positions I to VI of the control discs according to FIGS. 5 to 7.
  • both support gratings are at the same level.
  • the horizontal stroke initiated by the control discs 32 begins in the rotary position II and extends through the position III to the rotary position IV in that the rollers 46 drive the support grating 10 by means of the bearing blocks 34 to the right, the upright member of the grating rolling freely on the support rollers 48.
  • the vertical drive has been reversed in the meantime between the positions III and IV.
  • the horizontal stroke which begins again in the rotary position V returns the support grating 10 to the starting position I, while the vertical stroke continues and reverses upwardly at the position VI, the support grating finally reaching the starting position rising gently while the horizontal drive is ineffective, independently of whether the driving shaft 30 is stopped or continues to run, in order to begin directly thereafter another feed step in the described manner.
  • FIG. 3 illustrates the right hand cooling bed section in an arrangement which is inclined downwardly towards the driving shaft 30 at an angle a, whereby instead of control discs 32 with cam grooves 32a simpler control discs with external control cams 32b can be utilised.
  • the horizontal weight component resulting from the inclination of the support grating 10 which is freely movable on rollers is utilised for the force transmitting contact between the control cams 32b for the horizontal stroke and the guide rollers 36 co-operating with these control cams.
  • the cooling bed drive according to the invention is free of control eccentrics and therefore does not obey the control function thereof which is necessarily sinusoidal; but appropriately shaping the control cams cooling bed movements can be obtained which permit the demands for low impact and low noise conveyance of the roller material to be fulfilled.
  • control cams as well as sensing rollers and lifter rollers cooperating therewith in conjunction with the single shaft drive simplifies the bearing and lubrication problems, in particular since the few bearing points can be located far away from the heat radiating rolled material.
  • a cooling bed for elongated rolled material comprising:
  • a drive means including a single shaft rotatably mounted below said support gratings, said drive means effecting displacement of said first support grating;
  • said drive means including a plurality of first control discs driven by said shaft and a plurality of horizontally extending push rod members driven by said first control discs;
  • each push rod member having at least one lifter roller attached at each end thereof;
  • each of said lifter rollers resting on a stationary surface inclined downwardly in a direction toward said control discs;
  • each push-rod member being operatively coupled with one of said first control discs, whereby said first control discs impart an oscillating movement to said push rod members, said oscillating movement having a vertical component due to the inclination of said stationary surfaces;
  • each push rod member also having attached at each end a support roller, each support roller being mounted for independent rotation relative to said lifter rollers;
  • said stationary inclined surfaces, said lifter rollers and said support rollers being collectively disposed below said gratings and being collectively operatively connected with said first grating to support the same from below and to effect vertical movement thereof;
  • a plurality of second control discs attached to said rotary shaft; a plurality of cantilevered members each being operatively connected at an upper end to said first grating, and each extending generally downwardly therefrom toward said rotatable shaft; and each cantilevered member having a control roller rotatably mounted adjacent a lower end thereof, each of said control rollers engaging one of said second control discs to effect an oscillating horizontal displacement of said first grating.
  • each of the control rollers engaged by the second control discs for effecting the horizontal stroke of the first grating is positively guided in a cam groove of the respective control disc.
  • cooling bed according to claim 1, wherein the cooling bed is inclined downwardly towards the shaft and the horizontal weight component resulting from the inclination of the first grating which is freely movable on the support rollers is utilised to provide a positive engagement between external controlcams of the second control discs and the rollers co-operating therewith.
  • a cooling bed according to claim I wherein the second control discs for effecting the horizontal stroke of the first grating have cam portions which extend concentrically to the shaft, and each of which corresponds to a cam portion of each of the first control discs by which the vertical stroke of the displaceable grating is effected.
  • a cooling bed according to claim l wherein the first control discs for effecting the vertical stroke of the first grating have cam portions which extend concentrically to the shaft and each of which corresponds to a position in which both gratings are at the same height level.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Reciprocating Conveyors (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Rolls And Other Rotary Bodies (AREA)
US00202917A 1970-12-28 1971-11-29 Cooling beds Expired - Lifetime US3746146A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702063972 DE2063972A1 (de) 1970-12-28 1970-12-28 Kühlbett

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US3746146A true US3746146A (en) 1973-07-17

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US00202917A Expired - Lifetime US3746146A (en) 1970-12-28 1971-11-29 Cooling beds

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US (1) US3746146A (de)
BE (1) BE776820A (de)
DE (1) DE2063972A1 (de)
FR (1) FR2119977B1 (de)
GB (1) GB1372397A (de)
IT (1) IT944418B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513853A (en) * 1982-09-27 1985-04-30 Maier Enterprises, Inc. Cooling bed construction
US11426964B2 (en) * 2016-04-18 2022-08-30 Bobst Lyon Device for rupturing attachment zones on folding boxes and production unit comprising such a rupture device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4838411A (en) * 1988-01-11 1989-06-13 Excel Corporation Lift and carry accumulating conveyor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1441042A (en) * 1921-04-29 1923-01-02 George E Thackray Cooling bed
US1718870A (en) * 1925-04-23 1929-06-25 Noell Albert Cooling bed
US1753868A (en) * 1925-08-06 1930-04-08 Pioneer Butter Wrapping Machin Wrapping machine
US2770346A (en) * 1952-06-24 1956-11-13 George L Oswalt Pallet feeder
US2930333A (en) * 1955-10-21 1960-03-29 Konink Verkade Fabricken N V Oven for baking, heating or keeping bakers' wares at a constant temperature

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1441042A (en) * 1921-04-29 1923-01-02 George E Thackray Cooling bed
US1718870A (en) * 1925-04-23 1929-06-25 Noell Albert Cooling bed
US1753868A (en) * 1925-08-06 1930-04-08 Pioneer Butter Wrapping Machin Wrapping machine
US2770346A (en) * 1952-06-24 1956-11-13 George L Oswalt Pallet feeder
US2930333A (en) * 1955-10-21 1960-03-29 Konink Verkade Fabricken N V Oven for baking, heating or keeping bakers' wares at a constant temperature

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4513853A (en) * 1982-09-27 1985-04-30 Maier Enterprises, Inc. Cooling bed construction
US11426964B2 (en) * 2016-04-18 2022-08-30 Bobst Lyon Device for rupturing attachment zones on folding boxes and production unit comprising such a rupture device

Also Published As

Publication number Publication date
FR2119977A1 (de) 1972-08-11
IT944418B (it) 1973-04-20
DE2063972A1 (de) 1972-07-20
FR2119977B1 (de) 1976-12-03
GB1372397A (en) 1974-10-30
BE776820A (fr) 1972-04-17

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