US1649706A - Roller leveler mechanism - Google Patents

Roller leveler mechanism Download PDF

Info

Publication number
US1649706A
US1649706A US33602A US3360225A US1649706A US 1649706 A US1649706 A US 1649706A US 33602 A US33602 A US 33602A US 3360225 A US3360225 A US 3360225A US 1649706 A US1649706 A US 1649706A
Authority
US
United States
Prior art keywords
sheet
rolls
working
machine
draft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US33602A
Other languages
English (en)
Inventor
George L Kelley
Carolus L Eksergian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Budd Co
Original Assignee
Edward G Budd Manufacturing Co
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.)
Filing date
Publication date
Priority to BE333966D priority Critical patent/BE333966A/xx
Application filed by Edward G Budd Manufacturing Co filed Critical Edward G Budd Manufacturing Co
Priority to US33602A priority patent/US1649706A/en
Application granted granted Critical
Publication of US1649706A publication Critical patent/US1649706A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

  • Appneauon mea may 29, 1925.
  • the machine of our invention is of a type embodied in the commonly known roller leveler used in the sheet metal industries for straightening or4 leveling sheets of material prior to forming operatlons such as for eX- ainple, die pressing, drawing, and the like. In the main, however, it may asreadily be disassociated from the roller leveler per se.
  • the machine which we have invented has the advantage of low costof machine, a smaller floor space for the sheet working and leveling operations, a reduction in the amount of labor required, and an increase in the rate of production. Yet it may well be that there are other fields of utility for the sheet working apparatus per se.
  • the apparatus itself was ill-suited to coo crate with Working elements capable of pro ucing that great degree of working requisite for full utility, notably where vthe draft or pinched rolls are incapable of exerting that traction necessary to satisfactorily progress a sheet of material through the machine under this heavy Work.
  • a sheet working apparatus with the roller leveler, provide draft rolls in advance of the roller leveler and in line in the eld thereof, sheet holddown rolls in advance of and spaced from the draft rolls, and a sheet working roll intermediate the holo-down and draft rolls and shiftable automatically across the space between the hold down and draft rolls into and out of working relation toi a sheetpassing between them, together with an automatic shiftinfr device controlled in its shifting operation l bythe passage of the sheet from the hold-down rolls to the draft rolls.
  • Fig. 1 is a general side elevation of one embodiment of our invention
  • Fig. 2 is a side elevation partly broken away and partly in section of the sluiting device for the working element
  • Fig. 3 is a vertical sectional elevation of a pair of controlled relays used 1n connection with this shifting device
  • Fig. 4 is a front elevation with end portions broken away of the draft or pmch rolls and the equalized intermediated bearings of the same;
  • Fig. 5 is a transverse sectlon of line 5 5 of Fig. 4;
  • Fig. 6 is a diagram of electrical c1rcu1t control connections through which the automatic operation is effected.
  • Fig. 7 is a longitudinal section through the end bearing of one of the hold-down rolls.
  • the general direction and path of progress of the sheets of material through the machine are designated by the line 10--10, and the associated arrow.
  • the draft or pinch rolls which draw the sheets into the machine are designated 11. There are two adjacent pairs of these rolls.
  • the Working element is designated 12, and located in advance of the draft rolls 11. It is in the form of a roll having an axis parallel to the axes of the rolls 11. i/Vhile the axes of rolls 11 arerelatively speaking fixed in position, the axis of roll 12 is reciprocable transverse- 1y of the path of movement of the sheets from one side of this path of movement' to the other.
  • the idle position of the working element out of engagement with the sheet to be worked, is shown in dotted lines,) while the working position is shown in full lines.
  • the hold-down rolls are designated 13. lThese are located in advance of the working roll 12. While the draft rolls 11 pinch the sheet, and under traction draw the sheet intothe machine, the rolls 13 do not pinch the sheet, but have their axes so related that there is normally sulicient clearance between them to permit sheet to be thrust freely between them and into tractive engagement with the draft rolls 11.
  • the rolls of the roller leveler apparatus entering into the combination are designated 14. These rolls, too, as'respects the working element 12, have relatively fixed axes. The showing here, however, is diagrammatic and the relative locations of the axes are not indicated. It is intended that they may be related according to any fof the well known principles in roller levelers known in the art. Ordinarily the pairs are alternately vertically displaced in opposite directions whereby the sheet of material to be leveled is alternately bent slightly in opposite directions to level or straighten the sheets of material fed through it. Too, they may be adjustably driven in any desired manner, and any desired means of relative adjustment may be provided. The path of movement of the sheet through these rolls is in general a continuance of the path of movement of the sheet through the rolls 11, 12, and 13.
  • the shifting device for the working roll 12 is the shifting device for the working roll 12. It is in the form of a compressed air cylinder and piston.
  • the piston rod 16 is connected through the crank arm 17 to the shaft (i8 which is mounted for oscillatory movement in the opposite sides of the machine.
  • a crank arm 17 is rigidly connected to each end of the shaft 68 and to the free end of cach arm 17 is pivotally connected the lower end of the connectmg rod 18.
  • 'lherc is thus provided a connecting rod 18 on each side of the machine, the upper ends of which are connected pivotally to opposite sides of the shiftable support 19 for the working roll 12 whereby upon actuation of the device 15 the latter is moved into and out of working engagement with the sheet of material to be rolled.
  • the automatic control is effected through a pair of relays 21 and 22, the former being an electro-magnetically controlled valve as shown in Fig. 3. and the latter an air controlled valve in turn controlled by the electromagnetic valve.
  • This magnetic relay 21 is controlled over the electric circuit 24 shown diagrammatically 'in Fig. 6.
  • This circuit includes the magnet ot' relay 2l and a battery 24 and has its opposite terminals embodied in the hold-down' and draft rolls 13 and 11, respectively. These rolls are insulated from each other as indicated by the insulation 25 appearing in the section of Fig. 7 whereby normally the circuit is maintained open. However, when a sheet ot' material is projected through the liold-down rolls 13 into the draft rolls 11, the circuit is completed by way of the body of the sheet as indicated clearly in Fig. 6. Immediately the electromagnetic relay 21 is energized, air relay 22 actuated, and air admitted to cylinder 15 to shift the working roll 12 into working engagement with the sheet and establish the working loop 20.
  • the circuit remains closed as long as the sheet is 'progressing through the machine. The moment the rear end of the sheet leaves the hold-down rolls 13, however, the circuit is broken, electromagnetic relay is deenergized and air is discharged from cylinder 15 of the shifting device, shitting the working roll out of working relation to the sheet dropping it to its idle position where a new sheet may be freely inserted without interference therefrom. The moment the new sheet is inserted, however, it is again shifted into working relation to recreate the loop which is again maintained through the progress of the sheet through the machine.
  • the shifting of the working element into and out of working relation to the sheet is thereby automatically governed by the progress of the sheet ,through the machine, and moreover bears a determinate time ratio to the period ot progress otthe sheet through the machine.
  • the rolls of such machines are driven by relatively constant speed motors.
  • the main air line enters the casing 26 of theair relay 22 by port 27 to an inner chamber 28.
  • the bottom of this port is closed Yby an inwardly opening poppet valve 29. while the top is closed by a removable screw cap 3() otl sufficient diameter to permit the replacement and removal. of the valve within chamber 28.
  • This valve 29 controls the admission of air to the shitting device 15 by way ot' inlet conduit 23 communicating with an intermediate chamber 31.
  • the outlet is controlled by a second poppet valve 32, opening outwardly from the bottom of chamber 31 and controlling the communication of this chamber with the atmosphere through discharge chamber 33 and port 34 'in the lower part of the casing 26.
  • the lower part of the casing is in the form of a compressed air cylinderA 35 containing a piston body 36 of elongated form. Discharge valve 32 is formed integrally with this piston.
  • piston further, has an axially upward rodlike extension 37 effecting the sliding engagement with the admission valve 29 borne thereon and aligned thereby.
  • the lower end ot the piston is closed by a screw cap 39 forming a seating for the piston against the upper end of cylinder head screw cap 40 when the piston 36 is down.
  • This piston 36 is preferably made of hollowT form to reduce its weight.
  • the screw cap 4() is of sufficient. diameter to permit freeinsertion and removal ot the piston 36.
  • this cap 40 carries the inlet and discharge passage 41 through which air is admitted to andfrom cylinder 35 to actuate piston 36.
  • This admission conduit 41 communicates with the, electromagnetic control valve 21 by means of registering passage way 42 in the lower end of casing 26, communicating with passage way 43 in the base 44 of relay 21 secured to tie casing 26 by bolts 45 and with inlet and discharge passage 46 of relay 21.
  • Valve 47 has two seats, the one 51, through which it shuts off the source of air supply from the mains through conduit 52, and the other 53, by means of which it shuts off communication of the admission conduit 46 with the atmosphere by way of discharge conduit 54. As long as the valve is down, no air is admitted to relay 22 and this relay is discharged to atmosphere by way of conduit 54.
  • valve 47 When the electromagnet 50 is actuated, however, b ⁇ the closure of circuit 24, valve 47 is raise closing the other relay 22 from the atmosphere, and opening it by way of inlet 42 to a source of air supply with the result that piston 36 is actuated upwardly.
  • This upward movement closes ⁇ discharge valve 32, thus cutting ott the cylinder 15 of the shifting device from the atmosphere, and through the washers 38, causes the inlet valve 29 to open to a degree determined by the number of washers 38 in place, adn1itting air to cylinder 15 and effecting the shifting of the working roll 12 into working relation with the sheet in progress through the machine.
  • the valves remain in this relation as long as the sheet is in progress through the machine. But the moment the end of the sheet is released by the holdilet 54, and then valves 32 and 29 which in turn vent shifting cylinder 15 to atmosphere and closes oil' this connection with any source of air supply.
  • the working element promptly falls back out of working relation to the path of progress of the sheet.
  • the shock absorbing mechanism 55 This is in the form of a heavy spiral spring and other devices coacting with the piston rod 16 of the shifting device.
  • the spring is housed in the casing 56, screw threaded into the head 57 of a bridge support 58 projecting from the head of cylinder 15.
  • the spring is confined at its outer end by the head of the casing 56 and at its inner end by means of a lianged collar 59 working freely on rod 16.
  • the flange of this collar bears on the inner end of the spring 55', and also upon a. ring 60 of rubber or other resilient shock absorbing material, mounted in the scat 61 in the inner end of the casing 56.
  • a washer 62 of rubber or other shock absorbing material Vithout the collar 59, surrounding rod 16, is a washer 62 of rubber or other shock absorbing material also freely mounted on the rod.
  • lVithout the washer 62 is a recessed metal disc 63, engaging the washer within its recess and also free on the rod.
  • the collar 64 is, however, fixed on the rod and whenever the rod is actuated, engages at some point in the stroke with the plate 63 and through it with the washer 62, collar 59, ring and kspring 55 in series whereby the stroke of the device is shock absorbed and the inertia annulled and smooth operation assured.
  • the precise point of engagement is determined by adjustment of casing 56 made by turning it in the head 57.
  • an adjusting mechanism 65-66 in the form oi' a hand operated pinion 67 engaging with a gear formed integrally on the casing 56. This regulates the length of stroke of the device 15.
  • the shock absorbing mechanism 55 is adjusted accordingly. The adjustment of the stroke in this manner adjusts the distance the working roll 12 is projected across the path of progress of the sheet and accordingly adjusts the height of thc loop 2O and the degree of reverse bending and the result of Working effected.
  • Each consists oi three rollers 70 ⁇ having comparatively large main bodies, the central one of which bears against both rolls 11 engaged by the bearing, and the outer ones of which bear respectively against the outer rolls 11 as clearly appears in Fig. 5.
  • Rolls 7() are carried in a body casing upon pintles 71, journaled in liner roller or ball bearings 72 in the opposite ends of the casing, each roller 7() being located in an individual pocket 73 and having bearings 72 individual to itself.
  • the bearings 72 may be of any well known type, but are rendered demountable by bolting on the bearing casings as at 7l. Each axial pair of bearings is thrust against the rolls 11 by the ball and socket support.
  • the ball and socket support of the lower axial bearing comprises depression 75 in the casingy 69 within which bears the rounded upper end of heavy pin 76 having a screw threaded engagement with the cross bar 77 below rollers 11 as shown particularly in Figs. 1 and Ll.
  • the upper axial pair ot' bearings is supported by balls 78, held iu socket 79 in casings 69 by means of the equalizer bars 80, the ends ofwhich are socketed to receive the upper surfaces of the balls 78.
  • This equalizer bar is heavy and strong.
  • the time relation between the moment of initial contact of the end of the inserted sheet with the first pair of draft rolls 11, and the moment of shifting of the working roll 12, is such that the sheet has progressed from the first pair of draft rolls 11 to the second pair 11, at the moment of shifting of the roll -12 so that the bodily movement of the sheet by the shifting roll 12 does not interfere with the uniform movement of progression through the machine, the sheet beingl freely and irretrievably pinched between the airsof draft rollers 11.
  • This time perio known means but in the usual course when two relays such as 21 and 22 are used in the controlling circuit of the shifting device, the time interval is quite sufficient for this purpose.
  • the entire group of pinch rollers, working roll and hold down rollers, it will be noted is mounted in a pair of right and left frame castings 86 which are in turn secured to the end of the frame Work 87 of the roller leveler apparatus. So mounted this portion of the ap aratus may be mounted and defiom its combination with the leveler apparatus at will.
  • the shifting device 15, and the associated devices and mechavnisms of the automatic control are mounted on the legs 88 of the machine through the intermediary of transverse channel frame members 89 and 90 which in turn support longitudinal beams 91 upon which the shifting device 15 and associated parts is supported. This support is by means of a transverse bar 92, carrying a pedestal 93, supporting the device 15 by a transverse pivot 94.
  • shock absorbin devices 55 which acts on a forward stroke
  • a,rebound spring 964 which takes the shock of the rebound when the working roll is shifted away from working relation with the sheet.
  • the degree of movement of these shock absorbin devices is relatively small and may be ad]usted to suit requirements.
  • a machine for eliminating stretcher strains in a sheet of material comprising a group of straightening rolls, an auxiliary sheet-working roll movable across the working plane of said straightening rolls, and a controlling device for said sheet-working roll controlled by the said sheet during its progress through the machine.
  • a machine for cold working a sheet of material comprising a plurality of cooperating rolls positioned to Hex and bend repeatedly a sheet of metal passed between them, a working element'located in advance of said rolls and arranged for shifting into and out of relation to the sheet of material whereby to impart a preliminary bend to said sheet, and means for automatically shiftin said element into working position only a ter the sheet has been progressed a predetermined distance into the machine.
  • a machine of the character described comprising a Working element shiftable into and out of working relation -to a sheet of material being progressed through the machine, a ower operated shifting device for said wor ing element, and an electrical control circuit for said shifting device opened tively constitute the -terminus of an electrical control circuit, and a sheet working element shiftable transversely from the path between the hold down and the draft rolls, and shiftiner of which is governed over said electrical control circuit.
  • a machine of the character described comprising spaced rolls governing the progress of the sheet of material through the machine over a determinate path, and a sheet working element ⁇ the working engagement of which with the sheet is automatically controlled by the progress of the sheet across the space between said rolls.
  • a machine of the character described comprising a working element projectable into the path of movement of a sheet of material between spaced guide means, controlling means governing said projection by the progress of said sheet between said s aced means and means for adjusting the egree of projection.
  • a machine of the character described comprising spaced ⁇ guide means governing the progress of a sheet of material through the machine over a determinate path, a sheet working element the working engagement ot which with the sheet is automatically controlled by the progress of said sheet over the space between said guide means, and means Ior varying the degree of said engagement.
  • a machine of the character described comprising a sheet working element partly projectable into and out of operative rela- .tion by means of the sheet of material in progress through the machine, a ⁇ shock absorbing. means for the working clement operative in its disengaging movement from the work.
  • a machine of the character described a pair of draft rolls, and a plurality of equalized radial draft thrust bearings intermediate the ends of the rolls, a sheet working element partly projectable into and ont of operative relation by means of the sheet ot' material in progress through the machine, a shock absorbing means for the working element operative in its disengaging movement from the work, together with means to adjust said bearings in conjunction toward and from the rolls.
  • a machine for cold Working a sheet of metal comprising a series of leveler rolls, a working clement, said element being mounted for projection from a position substantially below the working plane to a position substantially above said plane, and means for automatically insuring the upward projection of said working element only after the sheet has progressed beyond said work ing element a predetermined distance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
US33602A 1925-05-29 1925-05-29 Roller leveler mechanism Expired - Lifetime US1649706A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE333966D BE333966A (enrdf_load_stackoverflow) 1925-05-29
US33602A US1649706A (en) 1925-05-29 1925-05-29 Roller leveler mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33602A US1649706A (en) 1925-05-29 1925-05-29 Roller leveler mechanism

Publications (1)

Publication Number Publication Date
US1649706A true US1649706A (en) 1927-11-15

Family

ID=21871344

Family Applications (1)

Application Number Title Priority Date Filing Date
US33602A Expired - Lifetime US1649706A (en) 1925-05-29 1925-05-29 Roller leveler mechanism

Country Status (2)

Country Link
US (1) US1649706A (enrdf_load_stackoverflow)
BE (1) BE333966A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476254A (en) * 1946-01-25 1949-07-12 Budd Co Method for working sheet metal
DE1115690B (de) * 1957-09-14 1961-10-26 Robert Berninghaus & Soehne Walzvorrichtung zum Richten von Blechbaendern
US3020624A (en) * 1955-10-03 1962-02-13 Mc Kay Machine Company Apparatus for cleaning and processing metal strip
US4043162A (en) * 1975-08-16 1977-08-23 Bwg Bergwerk- Und Walzwerk-Maschinenbau G.M.B.H. Roller assembly for sheet-bending head and method of making roller bearings therefor
US20120061453A1 (en) * 2008-12-05 2012-03-15 Thyssenkrupp Tailored Blanks Gmbh Method for Producing Tailor-Made Sheet Strips
US11826811B1 (en) * 2022-07-07 2023-11-28 Guofen Luo Irregular tube straightener

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476254A (en) * 1946-01-25 1949-07-12 Budd Co Method for working sheet metal
US3020624A (en) * 1955-10-03 1962-02-13 Mc Kay Machine Company Apparatus for cleaning and processing metal strip
DE1115690B (de) * 1957-09-14 1961-10-26 Robert Berninghaus & Soehne Walzvorrichtung zum Richten von Blechbaendern
US4043162A (en) * 1975-08-16 1977-08-23 Bwg Bergwerk- Und Walzwerk-Maschinenbau G.M.B.H. Roller assembly for sheet-bending head and method of making roller bearings therefor
US20120061453A1 (en) * 2008-12-05 2012-03-15 Thyssenkrupp Tailored Blanks Gmbh Method for Producing Tailor-Made Sheet Strips
US11826811B1 (en) * 2022-07-07 2023-11-28 Guofen Luo Irregular tube straightener

Also Published As

Publication number Publication date
BE333966A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
US2091789A (en) Sheet straightening machine
US1649706A (en) Roller leveler mechanism
US2587603A (en) Turbine blade grinding machine
US2038305A (en) Strip coiling machine
US2677978A (en) Rolling mill
US2308432A (en) Apparatus for flanging or otherwise forming marginal edges of plates
US2503760A (en) Automatic feeding device
US2726490A (en) Billet grinder
US2595402A (en) Device for cutting sheet material
US3704614A (en) Adjustable strip conditioner
US2026109A (en) Cutting machine
US3522722A (en) Wing bending machine
US2022532A (en) Spring forming and quenching machine
US2009508A (en) Method and apparatus for straightening sheet material
US1981189A (en) Spring cover apparatus
US1207390A (en) Feeding device for presses.
GB612321A (en) Improvements in or relating to bending machines
US858096A (en) Rocker-press for shaping metal.
US318785A (en) Matthew e
US1408106A (en) Flanging machine
US1504023A (en) Straightening machine
US1881364A (en) Apparatus for the mechanical kneading of dough
US2566423A (en) Apparatus for forming tubes
US2896485A (en) Draw rolling mill
US1862882A (en) Grinding machinery