EP0096643B1 - Machine de cintrage à rouleaux crénelés incorporant des moyens de prise en compte de l'épaisseur des tôles et des moyens compensateurs de flèche - Google Patents

Machine de cintrage à rouleaux crénelés incorporant des moyens de prise en compte de l'épaisseur des tôles et des moyens compensateurs de flèche Download PDF

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Publication number
EP0096643B1
EP0096643B1 EP83401177A EP83401177A EP0096643B1 EP 0096643 B1 EP0096643 B1 EP 0096643B1 EP 83401177 A EP83401177 A EP 83401177A EP 83401177 A EP83401177 A EP 83401177A EP 0096643 B1 EP0096643 B1 EP 0096643B1
Authority
EP
European Patent Office
Prior art keywords
frame
mowable
rollers
crenellated
metal sheet
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
EP83401177A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0096643A2 (fr
EP0096643A3 (en
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 Industries Sa Dite Ste
Original Assignee
Jammes Industries Sa Dite Ste
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 Industries Sa Dite Ste filed Critical Jammes Industries Sa Dite Ste
Priority to AT83401177T priority Critical patent/ATE51171T1/de
Publication of EP0096643A2 publication Critical patent/EP0096643A2/fr
Publication of EP0096643A3 publication Critical patent/EP0096643A3/fr
Application granted granted Critical
Publication of EP0096643B1 publication Critical patent/EP0096643B1/fr
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

Definitions

  • the present invention is in the field of mechanical work of the sheets and more particularly of their bending along generators by pressing between wheels; it relates more particularly to a so-called rolling machine intended to perform such work and more especially a rolling machine of the type with crenellated rollers intended for the bending of rather thick sheets used in pressure vessels, this type of rolling machine having the advantage of bending over almost its entire length the sheet which is submitted to it.
  • the known rolling machines of the aforementioned type generally consist of a support roller around which the sheet will be bent, of a pair of notched rollers of fairly small diameters, of which the slots in rolls of one are interposed with the crenellated rollers on the other so as to present very close tangency points to the sheet metal to be bent, and a pressure roller with a diameter much larger than that of the crenellated rollers intended to press the crenelated rollers against the sheet metal.
  • Casters of the crenellated roller type should not be confused with cylindrical roller rollers such as for example the rollers described in patent US-A-4 133 197 in which, given the large spacing of the rollers, a variation sheet thickness of a few tenths of a millimeter can have no effect on the bending radius.
  • Rolling machines of the aforementioned type although they have proven to be very effective in the production at high speed of cylindrical pressure vessels such as compressed gas bottles, hot water cylinders, etc., however have two drawbacks.
  • a first drawback results from the fact that the sheets presented to the rolling machine can have different thicknesses and this because of the tolerances of the prior rolling; however, due to the approximation of the points of tangency of the rollers, a small variation in thickness has the effect of causing a significant variation in the radius of curvature; the remedy would consist in adjusting, as and when the successive sheets, the spacing between the crenellated rollers and the support roller, but such interventions are hardly compatible with production at high speed; it is therefore generally preferred to accept the sheets with a radius of curvature too large or too small and transfer the difficulty to the subsequent welding station.
  • the general object of the present invention is to allow curved sheets to be obtained in the form of much more regular and uniform cylinders than the cylinders obtained with prior art rollers, and this with the rates required by mass production.
  • said first means for locating the relative position of the tangency plane and of the face of the sheet consist of a lever-shaped feeler comprising a small arm, a large arm and a pivot axis, the end of the small arm constituting the feeler nose and being disposed in the secant plane of crenellated rollers, the pivot being formed by the axis of a crenellated roller, and the end of the large arm comprising on the one hand pivot detection means, and on the other hand, means for causing the nose to retract.
  • said second means for bringing the movable frame closer to the support roller are constituted by a plurality of pairs of sloping wedges, one of the wedges of a couple being secured to said movable frame, the other wedge of the couple being secured to 'a general frame of the machine, the dihedral edges of each wedge being perpendicular to said plane defined by the axes of the pressure roller and the support roller, and by means for moving the movable frame parallel to itself and parallel to the pinch roller axis.
  • the rolling machine of the invention incorporates means for deflecting in its center in an adjustable manner the pressing roller in the direction of the crenellated rollers, the bearings of the latter being supported by the movable frame by means of slightly flexible supports.
  • said means for bending consist of at least one pair of rollers, called reaction rollers, bearing on the one hand on the support roller opposite the crenellated rollers and on the other hand on the chassis mobitejesitées said rollers rotatably mounted on bearings which can be moved towards or away from each other by means of so-called deflection adjustment in a direction perpendicular to the plane defined by the axes of the support roller and the pressure roller.
  • said deflection adjustment means incorporate a screw with two steps opposite each other, said screw being maneuverable from outside the frame through which it passes through a longitudinal light, each step of the screw meshing in a threaded bore of each of the bearings of said pairs of bearings.
  • the movable frame has the shape of a U-shaped beam whose opening is directed towards the support roller;
  • the general frame of the machine has a general H-shaped beam structure, one of the recesses of which is intended to accommodate said movable frame; one of the sloping wedges of each pair is secured to the spacer of said H-beam while the other sloping wedge of the couple is secured to the back of said U-beam constituting the movable frame.
  • the bearings supporting the reaction rollers are guided in translation inside the movable frame by means of dovetail slides perpendicular to the longitudinal direction of said movable frame.
  • the frame has the general shape of a gantry of which said H-beam constitutes the upper part, the spacer of this beam being horizontal, said movable frame being housed below the spacer. so that the crenellated rollers are located below the pressure roller, the support roller itself being below the crenellated rollers; it follows from this H-shaped structure of the upper part of the frame that it offers the very high rigidity necessary for the importance of the bending forces.
  • the movable frame is kept suspended in the recess of the H-beam by means of a couple of spring-loaded tie rods, the foot of each of which passes through an oblong hole in the back of said movable frame.
  • FIGS. 1 and 2 The specifically more functional organs are more particularly illustrated in FIGS. 1 and 2, these members include a support roller 6 rotatably mounted in the bearings integral with the frame, the rear bearing 7 being integral with the rear leg 3 while the front bearing 8 is supported by the front end of the beam 2 by the means a thin veil 9 having a very high tensile strength; the web 9 allows the rolled cylinders to be removed.
  • the roller 6 is driven from its end housed in the bearing 7; in the lower recess 10 of the H beam 2 is housed a movable frame 11 with a U profile; the movable chassis 11 supports and houses crenellated rollers 12 and 13 with interposed slots, a pressure roller 14 and reaction rollers 16 and 17.
  • the reaction rollers 16 and 17 are supported by the movable chassis by means of bearings such as 19 and 20 which can be brought towards each other by means of a screw 22 with two reverse pitches, operable from the 'exterior of the frame by a steering wheel 23; the movable frame 11 is suspended in the recess 10 of the frame 2 by means of tie rods 26 with spring 27, housed under a cover 25, the foot 28 of which passes through a slot 29 in the back 30 of the movable frame; sloping shims such as 31 secured to the back of the movable frame serve as support for sloping shims 32 secured to the spacer 33 of the H 2 beam; these sloping shims have a dihedral angle of 4 to 5 ° (8% ).
  • Means such as hydraulic jacks 34, or screw jacks, allow the longitudinal displacement of the movable chassis 11 and, by the play of the sloping wedges sliding one against the other, its displacement is increased and precise in a vertical plane; couples of sloping shims such as 31 and 32 are arranged at several points on the back 30 of the movable frame.
  • a lever-shaped probe has a small arm 40, a large arm 41 and has its pivot formed by the axis 42 of a crenellated roller such as 12; the end 43 of the small arm 40 constitutes the probing nose; the latter is disposed in the secant plane 44 of the crenellated rollers 12 and 13 and exceeds the common plane 46 of tangency of the rollers 12 and 13 by about one millimeter.
  • a pivoting detection means such as microswitch 47; due to the position of the tipping point of the microswitch and the muftiplication of the lever arm, variations in position of the order of a hundredth of a millimeter of the nose 43 can be detected; we can therefore identify extremely precisely the position of the face 48 of the sheet relative to the plane 46.
  • Maneuvering means such as jacks 49 allow the nose to be retracted when the sheet is introduced or during its bending.
  • Such a probe is preferably arranged in the vicinity of the middle part of the rolling machine; it can be associated with automatic means for controlling the lowering of the mobile chassis, these automatic means being able to be either analog or digital.
  • the present invention is not limited to the embodiment described above. It encompasses all variants of a similar nature which can fairly easily be substituted for one another and provided that they in no way extend the scope of protection of the invention defined in the independent claim.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Press Drives And Press Lines (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
EP83401177A 1982-06-09 1983-06-09 Machine de cintrage à rouleaux crénelés incorporant des moyens de prise en compte de l'épaisseur des tôles et des moyens compensateurs de flèche Expired - Lifetime EP0096643B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83401177T ATE51171T1 (de) 1982-06-09 1983-06-09 Vorrichtung zum biegen mit gerippten walzen mit mitteln zur beruecksichtigung der blechdicke und mitteln zum kompensieren der durchbiegung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8210455A FR2528335A1 (fr) 1982-06-09 1982-06-09 Machine de cintrage a rouleaux creneles incorporant des moyens de prise en compte de l'epaisseur des toles et des moyens compensateurs de fleche
FR8210455 1982-06-09

Publications (3)

Publication Number Publication Date
EP0096643A2 EP0096643A2 (fr) 1983-12-21
EP0096643A3 EP0096643A3 (en) 1986-07-23
EP0096643B1 true EP0096643B1 (fr) 1990-03-21

Family

ID=9275033

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401177A Expired - Lifetime EP0096643B1 (fr) 1982-06-09 1983-06-09 Machine de cintrage à rouleaux crénelés incorporant des moyens de prise en compte de l'épaisseur des tôles et des moyens compensateurs de flèche

Country Status (4)

Country Link
EP (1) EP0096643B1 (enrdf_load_stackoverflow)
AT (1) ATE51171T1 (enrdf_load_stackoverflow)
DE (1) DE3381347D1 (enrdf_load_stackoverflow)
FR (1) FR2528335A1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2637206B1 (fr) * 1988-10-05 1994-05-27 Jammes Ind Sa Rouleuse a rouleaux creneles automatisable
FR2687336B1 (fr) * 1992-02-14 1996-05-15 Jammes Ind Sa Ligne de production automatisee de viroles roulees soudees.
FR2750061B1 (fr) * 1996-06-06 1998-09-11 Jammes Ind Sa Machine de cintrage de toles a rouleaux presseurs decales

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1025370B (de) * 1955-01-10 1958-03-06 Froriep Gmbh Maschf Dreiwalzenbiegemaschine mit durch verstellbare Rollenstuetzboecke abgestuetzten Unterwalzen
GB1083548A (en) * 1964-12-10 1967-09-13 Hingley & Sons Netherton Ltd N Improvements relating to coil and ring-formed machines
US4047411A (en) * 1977-01-03 1977-09-13 The Boeing Company Numerically controlled pyramid roll forming machine
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

Also Published As

Publication number Publication date
FR2528335B3 (enrdf_load_stackoverflow) 1985-03-15
EP0096643A2 (fr) 1983-12-21
DE3381347D1 (de) 1990-04-26
EP0096643A3 (en) 1986-07-23
FR2528335A1 (fr) 1983-12-16
ATE51171T1 (de) 1990-04-15

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