EP0368686A1 - Automatisierbare Rundwalzeneinrichtung mit verzahnten Walzen - Google Patents

Automatisierbare Rundwalzeneinrichtung mit verzahnten Walzen Download PDF

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Publication number
EP0368686A1
EP0368686A1 EP89402452A EP89402452A EP0368686A1 EP 0368686 A1 EP0368686 A1 EP 0368686A1 EP 89402452 A EP89402452 A EP 89402452A EP 89402452 A EP89402452 A EP 89402452A EP 0368686 A1 EP0368686 A1 EP 0368686A1
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EP
European Patent Office
Prior art keywords
rollers
axes
crenellated
machine
machine according
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.)
Granted
Application number
EP89402452A
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English (en)
French (fr)
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EP0368686B1 (de
Inventor
Michel Gravier
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.)
Jammes Industrie SA
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Jammes Industrie SA
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
Application filed by Jammes Industrie SA filed Critical Jammes Industrie SA
Priority to AT8989402452T priority Critical patent/ATE105518T1/de
Publication of EP0368686A1 publication Critical patent/EP0368686A1/de
Application granted granted Critical
Publication of EP0368686B1 publication Critical patent/EP0368686B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/14—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers
    • B21D5/143—Bending sheet metal along straight lines, e.g. to form simple curves by passing between rollers making use of a mandrel

Definitions

  • the present invention is in the field of working materials by deformation and it more particularly relates to improvements to machines for bending flat sheets to conform them into cylinders or cones; these machines are commonly called rollers.
  • rollers are known in which the bending of the sheet metal results from the passage of the latter between a so-called support roller and a train of crenellated rollers with axes parallel to the axis of the previous one and generally located at- above him; the cylindrical surfaces of the crenellated rollers intersect and the bending radius is defined by the more or less close position of the support roller of all the crenelated rollers.
  • the main problem posed by rolling machines is that of the bending of the rollers, and particularly of the support roller, the behavior of which is analyzed like that of a necessarily long and thin beam; one solution to this problem consisted in imposing a corresponding flexion on the opposing rollers, in this case the crenellated rollers. It has therefore been proposed as a means of this solution, but also for other reasons, the use of a pressure roller with a diameter comparable to that of the support roller and rollers exerting a differentiated pressure on the pressure roller can be bent and thanks to which still the crenellated rollers only transmit the pressure of the pressure roller without their bearings undergoing a considerable effort.
  • one of the aims of the present invention is to provide an automatic rolling machine, which can be associated with a welder working behind it and also working automatically; another object of the invention is to propose means for more precise adjustment of the flexion imposed on the crenellated rollers to compensate for the flexion of the support roller; another object is to distribute the load imposed on the crenellated rollers while guiding them in rotation in order to further reduce the load on their bearings.
  • a machine intended to conform a flat sheet metal into a cone or cylinder a machine known as a "rolling machine” or a “bending machine”, of the type of machine in which the bending of the sheet metal results from the passage of the latter between a roller called support and a train of crenellated rollers with parallel axes
  • the crenelated rollers are subjected to the pressure of a train of three pressure rollers with axes parallel to the axes of the crenelated rollers, namely a pressure roller median pressing both on the crenellated rollers and the so-called lateral rollers, the line of contact between the latter and the crenellated rollers being situated above the plane defined by the axes of the crenellated rollers, the axes of the rollers of the 'assembly, called mobile, crenellated pressure rollers being substantially fixed relative to each other; preferably the contact line of the pressure rollers with the crenellated rollers is situated at approximately 45 °
  • the support rollers and the crenellated rollers are shaped in a plurality of coaxial trains, the ends of the rollers of each train being engaged in bearings of intermediate support plates and ends, said support plates being integral with a beam movable in the vertical direction only.
  • the adjustment of the rolling radius results from a precise vertical displacement of said set of rollers perpendicular to their axes, this displacement being induced by a displacement parallel to the axes of the rollers of a first ramp (at least ) bearing on the one hand on a frame of the machine and on the other hand on a second ramp (at least) integral with the axis bearings of the rollers of the mobile assembly.
  • This characteristic results in better reproducibility of the positioning of the rolled sheet at the end of the operation, which ultimately promotes the automation of operations.
  • a plurality of first ramps is provided in the edge of a bar, called ramps, while an identical plurality of second ramps is formed by so-called "sloping" calles integral with said mobile beam; a good value for the angle formed by the plane of each ramp and the roller axes is approximately 6 ° (slope of approximately 10%); each sloping wedge comprises independent means of positioning in a direction parallel to that of the axes of the rollers.
  • the means for positioning a sloping wedge are constituted by a plane slide parallel to the plane of the axes of the crenellated rollers, and oriented at approximately 45 ° relative to the direction of these axes.
  • the movement of the ramp bar in the direction of the axis of the rollers is caused by a jack fixed to the frame, jack whose rod is connected to said bar by pairs of tie rods and crosspieces, the "out" position. of the rod corresponding to the "lowered” position of the roller assembly while a stop limiting the exit of the rod is mounted at the end of a threaded shaft meshing in a nut of a gantry secured to the frame, the threaded shaft with a crank handle.
  • the comb serves as a guide surface for the flat sheets before their passage between the rollers; a notch with a width at least equal to that of said bearing support veil is disposed at the end of each tooth on the side opposite to said guide surface; the end of each harpoon has at its upper part a small protruding rim; finally the comb is supported by a frame articulated at each of its ends around the support roller.
  • a rolling machine of the prior art such as that described in the publication FR-A-2,528,335 comprises a support roller 1, two serrated rollers 2 and 3 and a single pressure roller 4, at the difference, appearing well by approximation of fig.3, of the rolling machine of the present invention.
  • a rolling machine of the invention consists of a fixed frame comprising mainly a veil-beam upper-5, two gantries, front-6 and rear 7, a veil-support-8 bearing-9, a pair of guide rails 10. It also consists of mobile parts comprising a support roller 11, only mobile in rotation, and a mobile assembly 12 including a beam 21 and the crenellated rollers (13,14) and support ( 15, 16, 17).
  • the beam 21 is suspended from the web-beam 5 by suspensions with springs 23 and rods 24; wedges, called “sloping" 25 are fixed to the upper wing of the beam, which is advantageously an H-beam, facing ramps 26 cut in the edge of a bar 27, called ramps, and are permanently biased against the latter by the springs 23; the ramp bar 27 can slide in slides 28 parallel to the axes of the rollers (ie horizontally in the case of the machine in the figures), the sliding of the bar inducing a sliding of the ramps against the wedges and a vertical movement of the latter and of the mobile assembly 12 of which they are integral; there will be slides 29 for vertical guide of the assembly 12.
  • a motor-reduction unit 30 for driving the support roller 11 and on the other hand a set 31 of means intended for adjusting the bending radius of the sheets; these means 31 comprise a jack 32 whose body is integral with the gantry 7 and whose rod 33 is connected to a first cross member 34 which is itself connected by a couple of tie rods 38 to a second cross member 39 which is itself secured to the bar ramps 27.
  • a threaded shaft 40 coaxial with the rod 33 is supported by a secondary frame 41 secured to the main frame (5,7); a first end of the shaft supports, or forms, a stop 42 to limit the exit of the rod 33, while its other end supports an indexable crank 43 and provided with a position indicator.
  • each wedge is constituted by a prismatic block 50, of anti-friction metal for example, shaped at its base, in dovetail for example, to be able to be guided in sliding in a slide 51 of corresponding shape, formed in a base 52 fixed on the beam 21;
  • the slide as is clearly visible in fig.6 is oriented at about 45 ° relative to the direction of the axes of the rollers, or also relative to the direction of sliding of the ramp bar;
  • the adjustment of the position of the wedge along its slide is effected by means of two coaxial and antagonistic screws 53, screwed in nuts 54 secured to the base, and the ends of which bear on flats 55 of the block;
  • the upper face of the block forms an inclined plane 56 parallel to the face of the ramps; for reasons of convenience and simplification of the machining, the planes of the sides of the ramp are perpendicular to the median longitudinal plane of the ramp bar and, necessarily parallel to one another; it follows from this arrangement that
  • the inclination of the plane of the ramps and the shims is approximately 6 ° relative to the direction of the axes of the rollers (that is, a slope of approximately 10% relative to the direction of sliding of the ramp bar); it follows from this slope value, that the vertical displacement of the mobile assembly 12 is ten times smaller than the movement of the ramp bar 21 which causes it.
  • a quarter turn of the crank 43 will have the effect of modifying the stroke of the bar by one millimeter and the stroke of the mobile assembly by one tenth of a millimeter; this precision is not excessive since it conditions the obtaining of the desired bending radius, and therefore the proper functioning of the subsequent automations.
  • improved means participating in the loading (introduction of the sheet between the rollers) and in the unloading include a set, called comb 60, of teeth 61, also called harpoons because of their shape and their function , supported by a U-shaped frame 62, the arms 63 of which are articulated on, and at the ends of, the support roller 11; jacks 64 are engaged on extensions 65 of arms 63 to impart to them a pivoting movement around the axis of roller 11 (arrows 70).
  • Each tooth, or harpoon 61 has a notch 66 at the bottom and at the rims of its end and, at the upper part of its end, a protruding rim 67.
  • the width 1 ′ of the notches 66 is equal to or slightly greater than l thickness 1 ⁇ of the support veil 8 of the bearing 9. It will be noted, in FIG. 5, that the plane 68 formed by the upper face of the harpoons is substantially tangent to the roller 11 and that the line of tangency is very close to the contact line of the crenellated rollers 14 when the chassis 62 is in the low position, while the notches, also tangent to the roller 11, are aligned with the support web 8 when the chassis is in the raised position.
  • the comb serves as a table for guiding the sheets T in the direction of the rollers; thus again, in the high position and at the end of the cycle (FIGS. 8c and 8d), the notches keep the straight edges of the rolled sheets separate and align these edges on each side of the support veil.
  • the pivoting of the chassis limited by adjustable stops 71,72 (fig.4), is very precise and this precision allows the automatic extraction of the sheet after rolling.
  • This extraction is carried out by a pusher 75 grazing the underside of the support roller 11; the pusher is supported by a carriage 76 driven back and forth by a pair of chains 77 in the rails 10; the extractor standby position is that shown in fig.1.
  • the rolling machine of the invention operates the bending in a single pass, and the consecutive automatic ejection, thanks to the precise positioning of the harpoons, leads to a duration of the cycle of an operation, considerably reduced; the precision of the bending radius and that of the parallelism of the straight edges facing (edges) allows direct coupling to the machine (that is to say without intermediate handling) any automatic shell welder.
  • the means of the invention 31 intended for adjusting the bending radius could be automatic means indexed to the angular position in rotation of the support roller 11 which is also a drive roller, whereby the bending radius may vary during a cycle to allow obtaining a more or less elliptical or working cylinder.
  • These means can be, for example, of the cylinder type supplied through servo-valves, or else with ball screws for the operation of the ramp bar and DC motor; the control of the adjustment means will then preferably be of the digital type. Obviously the control could also be of analog type by a mechanical transmission of the movement of the support roller to the ramp bar.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Control Of Metal Rolling (AREA)
  • Heat Treatment Of Steel (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP89402452A 1988-10-05 1989-09-08 Automatisierbare Rundwalzeneinrichtung mit verzahnten Walzen Expired - Lifetime EP0368686B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT8989402452T ATE105518T1 (de) 1988-10-05 1989-09-08 Automatisierbare rundwalzeneinrichtung mit verzahnten walzen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8813381A FR2637206B1 (fr) 1988-10-05 1988-10-05 Rouleuse a rouleaux creneles automatisable
FR8813381 1988-10-05

Publications (2)

Publication Number Publication Date
EP0368686A1 true EP0368686A1 (de) 1990-05-16
EP0368686B1 EP0368686B1 (de) 1994-05-11

Family

ID=9370918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89402452A Expired - Lifetime EP0368686B1 (de) 1988-10-05 1989-09-08 Automatisierbare Rundwalzeneinrichtung mit verzahnten Walzen

Country Status (8)

Country Link
US (1) US4977770A (de)
EP (1) EP0368686B1 (de)
JP (1) JPH0761504B2 (de)
AT (1) ATE105518T1 (de)
DE (1) DE68915247T2 (de)
ES (1) ES2056240T3 (de)
FR (1) FR2637206B1 (de)
ZA (1) ZA897542B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102166591A (zh) * 2011-03-09 2011-08-31 苏州领航自动化科技有限公司 金属板折弯机
CN102189152A (zh) * 2011-03-09 2011-09-21 苏州领航自动化科技有限公司 一种金属板折弯机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2750061B1 (fr) * 1996-06-06 1998-09-11 Jammes Ind Sa Machine de cintrage de toles a rouleaux presseurs decales
ES2181513B1 (es) * 1999-06-18 2004-06-01 Universitat Politecnica De Catalunya Procedimiento para curvar chapa con curvatura desde los extremos.
JP2004130354A (ja) * 2002-10-10 2004-04-30 Inoue Sangyo Kk 円筒成型方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1308612A (fr) * 1961-09-01 1962-11-09 Appareil destiné à fabriquer des tubes cylindriques en partant de plaques d'un métal ferreux
US4133197A (en) * 1977-08-29 1979-01-09 Carando Machine Works Roll-type machine for forming cylindrical sheet metal bodies
FR2411647A1 (fr) * 1977-12-19 1979-07-13 Jammes Sa Anc Ets Dispositif permettant d'immobiliser en positions constantes les deux generatrices de jonction d'une virole, sur machine a cintrer les metaux en feuille
EP0096643A2 (de) * 1982-06-09 1983-12-21 Jammes Industries S.A., Société dite Vorrichtung zum Biegen mit gerippten Walzen mit Mitteln zur Berücksichtigung der Blechdicke und Mitteln zum Kompensieren der Durchbiegung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD74522A (de) *
CA551321A (en) * 1958-01-07 A. Breisch Robert Apparatus for coiling flat rim stock into rim blanks
US2140404A (en) * 1936-12-28 1938-12-13 Kane & Roach Inc Feed table for wrapping and pinchtype bending rolls
US2675849A (en) * 1949-08-26 1954-04-20 Budd Co Machine for coiling wheel rim stock or the like
US2882767A (en) * 1954-08-24 1959-04-21 Henry B Chatfield Process and apparatus for forming metal sheets into tubes
US4249406A (en) * 1978-09-05 1981-02-10 Anderson Frohman C Line pipe forming apparatus and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1308612A (fr) * 1961-09-01 1962-11-09 Appareil destiné à fabriquer des tubes cylindriques en partant de plaques d'un métal ferreux
US4133197A (en) * 1977-08-29 1979-01-09 Carando Machine Works Roll-type machine for forming cylindrical sheet metal bodies
FR2411647A1 (fr) * 1977-12-19 1979-07-13 Jammes Sa Anc Ets Dispositif permettant d'immobiliser en positions constantes les deux generatrices de jonction d'une virole, sur machine a cintrer les metaux en feuille
EP0096643A2 (de) * 1982-06-09 1983-12-21 Jammes Industries S.A., Société dite Vorrichtung zum Biegen mit gerippten Walzen mit Mitteln zur Berücksichtigung der Blechdicke und Mitteln zum Kompensieren der Durchbiegung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102166591A (zh) * 2011-03-09 2011-08-31 苏州领航自动化科技有限公司 金属板折弯机
CN102189152A (zh) * 2011-03-09 2011-09-21 苏州领航自动化科技有限公司 一种金属板折弯机
CN102166591B (zh) * 2011-03-09 2012-09-05 苏州领航自动化科技有限公司 金属板折弯机

Also Published As

Publication number Publication date
JPH02187217A (ja) 1990-07-23
ES2056240T3 (es) 1994-10-01
FR2637206A1 (fr) 1990-04-06
DE68915247T2 (de) 1994-12-01
DE68915247D1 (de) 1994-06-16
JPH0761504B2 (ja) 1995-07-05
US4977770A (en) 1990-12-18
ATE105518T1 (de) 1994-05-15
FR2637206B1 (fr) 1994-05-27
ZA897542B (en) 1990-09-26
EP0368686B1 (de) 1994-05-11

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