EP1281457A2 - Dispositif de cintrage des barres en profil creux - Google Patents

Dispositif de cintrage des barres en profil creux Download PDF

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Publication number
EP1281457A2
EP1281457A2 EP02017106A EP02017106A EP1281457A2 EP 1281457 A2 EP1281457 A2 EP 1281457A2 EP 02017106 A EP02017106 A EP 02017106A EP 02017106 A EP02017106 A EP 02017106A EP 1281457 A2 EP1281457 A2 EP 1281457A2
Authority
EP
European Patent Office
Prior art keywords
bending
hollow profile
roller
holder
counter
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
EP02017106A
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German (de)
English (en)
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EP1281457A3 (fr
EP1281457B1 (fr
Inventor
Peter Gerlich
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Bystronic Lenhardt GmbH
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Bystronic Lenhardt GmbH
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Filing date
Publication date
Application filed by Bystronic Lenhardt GmbH filed Critical Bystronic Lenhardt GmbH
Publication of EP1281457A2 publication Critical patent/EP1281457A2/fr
Publication of EP1281457A3 publication Critical patent/EP1281457A3/fr
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Publication of EP1281457B1 publication Critical patent/EP1281457B1/fr
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    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/74—Making other particular articles frames for openings, e.g. for windows, doors, handbags
    • 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
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/02—Bending rods, profiles, or tubes over a stationary forming member; by use of a swinging forming member or abutment

Definitions

  • the invention relates to a device with in the preamble of claim 1 specified characteristics.
  • a device is known from EP 0 318 748 A2 known.
  • the known device for bending hollow profile bars to spacer frame for insulating glass has a bending cheek and a counter-holder, which the hollow profile rod on its outer wall and at clamp its inner wall between them, together around a pivot axis are pivotable and thereby bend the hollow profile bar, which on the the bending cheek side facing away additionally clamped in a clamping device is, which detects the hollow profile bar on the outer wall and inner wall.
  • the hollow profile bar acts, is either an extension of the counter-holder or a rod coupled to the clamping device.
  • the Biegewiderlager should in the known device, the inner wall of the hollow profile bar during the bending process and a predetermined shape of the inner wall without causing irregular wrinkling in Hohtprofilstab. This is not guaranteed with the known device, although they already have a Contribution.
  • the inner wall of the hollow profile bar in the later insulating glass pane Visible disturbs an irregular formation of the corners of the spacer frame its appearance in the insulating glass pane.
  • the device known from EP 0 318 748 A2 can be used in hollow profile rods Bend corners and thereby square spacer frame for insulating glass panes form; However, the device is unsuitable to hollow section bars with a larger Radius to round.
  • insulating glass panes which are not rectangular but completely or partially one Have edge in the shape of a round arch. Such insulating glass panes are called Designated model disks.
  • a bending device is known, with which spacer frame for both rectangular insulating glass panes and model panes can be bent.
  • this known bending device is the hollow profile bar the bending tool by a feed device along a Conveyor belt fed for bending, on the inlet side of the bending tool clamped on the flanks or led to round on the flanks.
  • the present invention has for its object to improve a device of the type mentioned so that it formed both square spacer frame and rounded spacer frame for model discs in good quality and with uniform good appearance both in the rounded portion and in the range of curved corners can be, especially in those cases in which there is already a granulate in the hollow profile bars during bending.
  • the bending tool of device according to the invention comprises a pivotable counter-holder, which is an attractive-looking design of the inner wall of the hollow profile bar favors corner bending.
  • the bending tool contains unchanged a role with which at corner bending favorable to the outer wall of the hollow profile bar can be acted upon.
  • This role assumes according to the invention a Dual function by using the support when rounding hollow profile bars the outer wall of the hollow profile bar is used.
  • the Biegewiderlager which is the inventive Device for the purpose of corner bending has, is not at the same time used as bending deflector when rounding. Rather, to round one second roller provided, which instead of the counter-holder, which at Rounding is not needed, in one of the bending cheek opposite operative position is movable and in its factory setting to a pivot axis of the bending cheek parallel axis is rotatable.
  • This second role can be in their operative position to be moved after the movable counter-holder from the bending cheek was removed and has freed up the space for the second role.
  • the for the Ekkenbiegen provided bending abutment does not have to be moved, it bothers when rounding the hollow profile bars not.
  • one more third roller provided, which on the side facing away from the second roller the conveyor track rotatably disposed about an axis parallel to the pivot axis and transversely to the conveyor track from a starting position under the conveyor track in a Working position is movable over the conveyor track.
  • the third roller directs the hollow profile bar against the of the first roller and resistors exerted by the second roller enforces a curvature, the extent of which is relative to the arrangement of the three roles depends on how far the third roll over the Level of the conveyor line is advanced.
  • a particular advantage of the invention is that the rounding of the hollow profile bar exclusively between roles and therefore not only gentle, but also with low friction.
  • a reduction of friction losses allows a reduction of the feed force and a reduced feed force in turn allows lower clamping forces with which the feed device engages the hollow profile bars, so that even thin-walled hollow profile bars in front of a Deformation are secured by the feed device.
  • the first roll must not be able to be shifted, so that it is sufficient if it lies with its lateral surface at the level of the conveyor track.
  • the first role should also serve to deform the corner bending to promote the outside of the hollow profile bar, then the first role must be shifted can be. It is therefore preferably on a movable support arranged so that their distance from the bending stock by a first drive is changeable. This can be done with the help of a movable carrier Pressure medium cylinder happen.
  • the first roller is additionally transverse to the direction in which you Distance from the bending abutment is variable, by a second drive, e.g. an eccentric, in a plane perpendicular to the pivot axis plane movable back and forth.
  • a second drive e.g. an eccentric
  • rolling on the outside to act on the hollow profile bar, preferably in combination with one of the first Drive outgoing hammering motion.
  • the second roll can be delivered in a straight path. Preferably However, it pivots into its operative position, which is easier and makes it easier they for the purpose of corner bending in a non-disturbing, ineffective position move back.
  • the second roller preferably has a main body with a lateral surface, which is bounded on both sides by walls which radially over the lateral surface protrude. This makes it possible, with the help of the role not only on the inner wall to act on the hollow profile bar, but also on the edges, so that the Hollow profile bar is guided on three sides during the round by the role.
  • the walls may be formed integrally with the second roller. Cheaper it is, the To form walls by slices, which are attached to the base body on both sides become.
  • a hollow shaft is preferably provided on the base body or formed with projecting stubs on both sides over the main body, on which the discs preferably sit.
  • the usage separate discs facilitates training in which from a given radial distance from the axis of the second roller the axial length of the Body shortened by gradation and / or the distance of him laterally limiting Walls increased by gradation, so that between the main body and the two lateral walls outside the intended radial Axial distance exists on both sides of the body an annular gap.
  • the Ring gaps can also be formed by the fact that between the main body and the two discs spacer rings are inserted, whose diameter smaller than the diameter of the main body.
  • the device is particularly suitable for processing web profiles.
  • Under Bar profiles are understood hollow profile bars, in which the flanks of the hollow profile bar project over the inner wall of the hollow profile bar.
  • the lead can dip into the annular gap, with the result that the lateral surface of the Main body acts exclusively on the inner wall of the hollow profile bar and they may be a little pushy, but not on the flanks, so that they remain unchanged in parallel, which is for use as a spacer frame in insulating glass is important.
  • the second role can also be used for box sections. Box profiles are profiles, in which the flanks of the hollow profile bar do not protrude beyond the inner wall. Are box profiles processed, the width of the distance between the two Walls of the second roll is adapted so that they rest against each other, then the second roller with its lateral surface also only on the inner wall of the hollow profile rod between the two edges and the inner wall if necessary, press in without the parallelism of the flanks affect.
  • the lateral surface of the main body of the second roller is preferably in longitudinal section convex, so that the inner wall when rounding a corresponding concave Get shape giving a smooth, wrinkle-free and appealing looking Appearance of the inner wall of the hollow section bar favors what matters is because it is the inner wall, which is later visible in the insulating glass pane is.
  • the second roller is preferably replaceable.
  • the diameter the lateral surface of the body of the second roller is not too small. Conveniently, it is at least 15 mm, preferably at least 20 mm.
  • the third role which in the rounding of the hollow profile bar on the outer wall can be an integral part of the bending cheek.
  • the third roller by pivoting the bending beam over the level of the conveyor track be moved out.
  • the third role as well as the bending cheek exclusively to optimize for their task, namely the third role for the process of rounding and the bending beam for corner bending.
  • the third role as well as the bending cheek exclusively to optimize for their task, namely the third role for the process of rounding and the bending beam for corner bending.
  • the third role as well as the bending cheek exclusively to optimize for their task, namely the third role for the process of rounding and the bending beam for corner bending.
  • the third role is their acting on the outer wall
  • the third role has expediently an adjustment in connection with a displacement sensor or with an angle sensor, in particular as a servo drive formed, which one the Weggeber predetermined path or a The angular position specified by the angle encoder is actively adjusted and then held. If desired, the position of the third roller by such a drive also be changed during rounding, so that intricately shaped Bows can be formed.
  • the device according to the invention in the bending tool elements for the Corner bending advantageously combined with elements for the rounding of hollow profile bars are, allows in a preferred development a particularly uniform and appealing looking training of the corners of curved hollow profile bars in that the device has a first clamping device, which on the bending cheek in the starting position facing away from the Pivoting axis is arranged and a first clamping part for acting on the Outer wall and a second clamping part for acting on the inner wall of Hollow section bar has, and that the flexural damper is a hinge through which the counter-holder and the first clamping part are interconnected.
  • the bending abutment with both the backstop and with the second clamping part of the clamping device (hereinafter referred to as the first clamping device is connected), namely by the hinge-like connection of the counter-holder with the second clamping part, is the position of the bending support stabilized in an excellent way and can under the influence of the Do not shift bending reaction forces occurring.
  • the hinge formed as a hinge determines the lateral surface the hinge formed as a hinge in conjunction with the inner wall of the hollow profile bar facing, preferably flat Surfaces of the counter-holder and the second clamping part, in which the hinge continues seamlessly, an exactly predetermined shape of the Inner wall of the curved hollow profile bar not only in the apex of a Corner, but also in the two adjoining sections of the inner wall of the curved hollow profile rod.
  • the invention achieves a previously unrivaled uniform, wrinkle-free and appealing-looking Training of the corner in the area of the visible inner wall.
  • a particular advantage of the invention is that the formation of the bending support as a hinge creates the possibility to form the counter-holder and the second clamping part wedge-shaped, wherein the wedge tips point to the hinge.
  • a wedge-shaped weakening of the bending abutment would not be possible because the bending abutment would not withstand the reaction forces occurring during bending.
  • the device known from EP 0 318 748 A2 therefore does not allow hollow profile bars to be bent by more than 90 °. According to the invention, however, this is possible if the wedge angles, as preferred, taken together are less than 90 °, preferably less than 70 °.
  • the counter-holder strikes after a pivoting angle of 110 ° with its wedge surface on the opposite wedge surface of the second clamping part and allows in this way bending angle of 110 °. Smaller wedge angles allow even larger bending angles.
  • the hinged deflector formed as a hinge has predominantly a cylindrical lateral surface, preferably only there of the cylindrical shape deviated, where the hinge halves in the anvil and in the pass over the second clamping part. Due to the cylindrical design of the lateral surface one achieves a corresponding symmetrical contour of the curved inner wall of the hollow profile.
  • Bar profiles have the advantage over box sections that their inner wall must be less deformed during bending, because they are closer to the "neutral Fiber "lies.
  • the hollow profile rods can be produced by extrusion or by Bending of metal strips with the help of a roller apparatus.
  • a hinged deflector designed as a hinge has with a radius of 2 mm to 3 mm, in particular of 2.5 mm, especially proven.
  • a bending stock with a radius of 3 mm to 4 mm, in particular 3.5 mm, especially proven, which is why such designed flexural deflectors are preferred.
  • the bending abutment is expediently on the Hollow section bar facing surfaces of the counter-holder and the first Clamping part something, so that it is the corner wall bending the inner wall of the hollow profile bar can impress.
  • the bending abutment when bending only on the inner wall, but not on the flanks acts, it is therefore expedient to the width of the hollow profile bars adapted so that its width is slightly smaller than the distance of the Flanks.
  • the bending abutment is preferably mounted replaceable.
  • the counter-holder is preferably at one to the Pivot axis of the bending beam pivotable carrier and the second clamping part preferably releasably attached to a frame-fixed carrier.
  • a second clamping device provided, which in the immediate vicinity the pivot axis acts on the flanks of the hollow profile rod. It can e.g. Example to act discs, which preferably together with the bending cheek are pivoted so that on the flanks of the hollow profile bar as little friction occurs.
  • the hollow profile bar when bending on both sides of the corner are clamped all sides, leading to both Sides of the corner not only ensures a predetermined cross-sectional shape but it also allows, when bending in particular on the flanks one to exert such a pull that when bending an elongation not only the outer wall of the hollow profile bar favors.
  • Such stretching is special important, if - as preferred - the hollow profile bars already before bending with a granular desiccant were filled as which molecular sieves (zeolites) are in use.
  • zeolites molecular sieves
  • Such an elongation is also when bending unfilled Hollow section bars low.
  • the desiccant sets a displacement of the outer wall of the hollow profile bar towards the neutral fiber during bending namely a resistance.
  • the second and the third clamping device preferably have corrugated, Knurled or otherwise roughened clamping surfaces.
  • the clamping devices By the on the Flanks exercised train results in a smoother formation of the corner than before.
  • the clamping devices the hollow profile bars not so to strongly clamp that they are not in the clamping devices at all can slip more, because then there would be a tearing of the hollow profile bars come. Slipping in the clamping devices is but by the invention Forming the bending device a much greater resistance opposite to known flexures, resulting in a smoother and thus leads to more advantageous corner training.
  • the hollow profile bars can in the device by pushing or pulling the Bending tool to be supplied; it is preferably done by pulling.
  • a favorable possibility for this is the hollow profile bar between two clamp parallel, endless, synchronously driven timing belt, which Back supported by strips, with which they pressed against the hollow profile bar can be so that the required driving force through a large area Friction be transmitted from the timing belt on the hollow profile bar can.
  • the hollow profile bars require beyond while conveying and bending a certain leadership.
  • This is an inclined Supporting wall customary, which in particular the bent leg of the hollow profile bar leads.
  • suitable guides are e.g. in DE 90 16 129 U1 described.
  • Figure 1 shows a simplified overall view of the device with a frame 1, with a supported by the frame, backwardly inclined support wall 2, with a provided in the lower region of the support wall 2 horizontal Conveyor track 3, along which to be bent hollow profile rods in the conveying direction. 4 a bending tool 5 are supplied.
  • a feed device is provided, which in the embodiment preferably from two endless, mutually parallel, synchronously driven Timing belts 6 and 7 are made which have pairs of gears 8 and 9 as well 8a and 9a are guided, of which the front gears 8, 8a driven are.
  • Timing belt 6 and 7 variable in their mutual distance, in particular by moving the upper toothed belt 7 together with its gears 8 and 9.
  • further tools may be arranged in particular a saw for severing the hollow profile bars, a labeling device for inscribing the hollow profile bars, and a connecting device for connecting successive sections of hollow profile bars.
  • a connection device consists for example of a stationary Clamping jaw pair 10 and from a longitudinally displaceable on the conveyor track 3 Clamping jaw pair 11.
  • the front hollow profile bar is near its rear end between fixed the stationary jaws 10 and the subsequent hollow profile bar set near its front end between the movable jaws 11, wherein one of the two ends carries a connector by advancing the second jaw pair 11 also in the opposite end the other hollow profile bar is pushed.
  • the legs of the hollow profile bars to be bent are in the illustrated device, in which the conveying direction 4 runs from left to right, contrary bent clockwise, with the bent legs on the Supporting wall 2 can be supported and guided on it.
  • the conveying direction 4 from left to right is arbitrary, it could also be from the right to the left; In this case, the hollow profile bars would be clockwise bent.
  • the conveyor track 3 is not formed as a continuous continuous track, but it consists of a sequence of partly different elements, which the hollow profile bars both parallel to the support wall 2 and in a thereto support and guide vertical plane while maintaining a straight, horizontal Force movement path of the hollow profile bars.
  • the determine the trajectory through hollow section bars include, among others Timing belts 6 and 7, the jaw pairs 10 and 11 and the bending tool 5, which is shown in more detail in Figure 2.
  • the main components of the bending tool 5 are a bending cheek 12, a cooperating counter-holder 13, a bending stocker 14, a first clamping device 15, 16 and a roller 17 which the bending support 14 opposite. These components are shown in Figure 2 in a view with a Viewing direction perpendicular to the support surface 2 shown.
  • Both the bending beam 12 and its counter-holder 13 are at one in the center lying of the bending support 14, perpendicular to the support wall 2 oriented Pivot axis 18 pivotable.
  • the bending beam 12 is provided behind the plane of the support wall 2, preferably an electric servomotor, which allows it, predetermined pivot angle particularly accurate perform.
  • the bending beam 12 by means of a pneumatic Cylinder, in particular a rotary wing cylinder, to pivot.
  • the anvil 13 has no own pivot drive, it is from the bending cheek 12 taken when this in the direction of arrow 19 a pivoting movement performs.
  • the counter-holder 13 is pressed against the bending beam 12, Preferably by means of a pneumatic cylinder, the in the drawings not shown and its resistance from the drive motor of the bending cheek 12 is overcome. The consequence of this is that a hollow profile bar to be bent 20 during the bending process between the bending beam 12 and her Contra-holder 13 is clamped.
  • the hollow profile rod 20 is fed to the bending tool on the conveyor track 3, that its outer wall 21 points downward and the bending cheek 12 is applied, that its mutually parallel flanks 22 extend parallel to the support wall 2 and that its inner wall 23 faces the counter-holder 13.
  • hollow profile bars 20 are bar profiles, in which - as best seen in Figure 9 - the flanks 22 on the inner wall 23 project.
  • the flanks 22 are inclined surfaces 24 with the outer wall 21 connected.
  • the box sections commonly used instead of bar profiles differ from the bar profiles in that the flanks are not projecting over the inner wall, but the inner wall of the inner edge the flanks 22 goes out.
  • the indications "inside” and “outside” are here with regard to chosen on the corner to be bent, which has an outside and an inside has, so that the "inner wall” the inside and the "outer wall” the outside the corner forms.
  • the first clamping device 15, 16 consists of a first clamping part 15, which is fixed to the frame, and from a second clamping part 16, which by means of a pressure cylinder, not shown, at a right angle to Support wall 2 extending axis 25 is pivotable.
  • the second clamping part 16 is made the position shown in Figure 2 pivoted slightly downwards; the role 17 is in the position shown in Figure 2 or in a contrast withdrawn Position; the bending cheek 12 is in the position shown in FIG Position or in a somewhat withdrawn position, as shown in Figure 11; the acting on the anvil 13 pneumatic cylinder is depressurized, so that the counter-holder 13 is not against the bending cheek 12 is pressed.
  • the hollow profile rod 20 is through its feed device 6 to 8 advanced, wherein the first clamping member 15, the anvil 13 and the bending abutment 14 between the flanks 22 of the Hollow profile bar 20 engage.
  • the hollow profile bar 20 is between the first Clamping part 15, the bending support 14 and the anvil 13 on the one Side and the second clamping part 16 and the bending beam 12 on the other Page advanced and runs behind the bending beam 12 with its outer wall 21 on a roller 26, which about an axis parallel to the pivot axis 18 is rotatable and one of those elements which determine the conveyor track 3.
  • the roller 17 is also an element for guiding the hollow profile rod 20th
  • the hollow section bar 20 is advanced until the point at which a corner is bent is to be achieved, the bending spreader 14.
  • the correct position can determined by a displaceable along the conveyor track 3 stop 27 ( Figure 1) be, on which the front end of the hollow profile rod 20 abuts and is set still.
  • the second clamping member 16 is pivoted up and the hollow profile bar 20 close in front of the bending stock 14 between the first Clamping part 15 and the second clamping part 16 is clamped.
  • the Hollow profile rod 20 now between the bending beam 12 and its anvil 13th clamped, as shown in Figure 2.
  • the flexural damper 14 has an im substantially cylindrical surface, with the exception of the sections to which it in the wedge-shaped portions of the counter-holder 13 and the first Clamping part 15 passes.
  • the invention is suitable for bending hollow section bars 20 that are empty, but also for bending hollow section bars 20, which are filled with granules are.
  • the outer wall 21 of the hollow profile bar 20 does not shift to the neutral phase when bending and therefore becomes stronger stretched. This brings with it the danger that the hollow profile bar 20 rips open when bending. This danger exists especially with particularly thin-walled Hollow section bars made of aluminum, less with hollow profile bars Stole. Tearing of the hollow profile rod 20 can be counteracted by the roller 17 become. It can be advanced against the outer wall 21 of the hollow profile rod 20 and rolling and pounding them and by doing so bring about a controlled elongation over a certain length of the outer wall 21.
  • the roller 17 can be driven as it is in Figure 17 is shown.
  • the roller 17 by a on the angle lever trained carrier 58 acting pressure medium cylinder 59 to the outer wall 21 pressed.
  • the roller 17 at the same time by a Eccentric be moved back and forth.
  • the Carrier 58 is mounted on an eccentric shaft 69 which is e.g. via a toothed belt 70 is driven by a motor, not shown.
  • Other options, how the drive of the roller 17 can be accomplished constructively, are in EP 0 318 748 A2 and in EP 0 635 093 B1, to which hereby incorporated by reference.
  • a pressure cylinder 71 is for delivery the roller 17 extended to the stop; then the role of 17 exactly on the Height of the conveyor track 3 are. Out of this situation can then in a second Stage of the second pressure medium cylinder 59 are effective, which the roller 17th can penetrate into the hollow profile bar.
  • these two pressure medium cylinder 59 and 71 combined to form a unit.
  • the pressure cylinder 71 is subjected to a greater pressure than the pressure medium cylinder 59.
  • a vibrating cylinder be which the roll 17 at low amplitude with a frequency of e.g. 3.000 Hz to 5.000 Hz applied, with which the roller 17 then on the Outer wall 21 of the hollow profile rod hammering and thereby its deformation facilitated.
  • Spacer frames for insulating glass panels also require in the corner area unchanged plane, mutually parallel flanks 22.
  • the parallelism and evenness must not be lost by bending the corner.
  • the role 17 must therefore be narrower than the distance of the flanks 22, so that the outer wall 21 of the Hollow section bar 20 can be pressed without Radiozubulen the flanks.
  • the designated Means are parallel to the plan view shown in Figure 3 top view shown to the support surface 2. You can see the pivot axis 18 and the bending cheek 12.
  • a support 32 is fixedly mounted, which replaceable wearing a fixed jaw 33, which the rear Flank of the hollow profile bar faces, which is not shown in Figure 3.
  • the axis 25 of the first clamping member 16 is mounted (FIG 7).
  • the axis 25 carries a further carrier 34, on which a second Jaw 35 transversely displaceable by means of a pressure medium cylinder, not shown (Arrow 36 in Figure 7) is mounted.
  • the physical axis 25 is in her Slidable longitudinally, so that the carrier 34 in the direction of arrow 37 of the Clamping jaw 33 and thus approximated to the hollow profile bar 20 lying in front can be ( Figure 7).
  • the carrier 34 not only carries the second jaw 35, but also a disc 38 ( Figure 3), which around the pivot axis 18 free is rotatably mounted on the carrier 34 and in the direction against the mounting plate 30th protrudes slightly beyond the carrier 34.
  • the carrier 34 with the rotatable disc 38th forms together with one of the rear edge 22 of the hollow profile bar 20 facing Extension 12a of the bending cheek a second clamping device, with which the flanks 22 of the hollow profile bar in the immediate vicinity of Swivel axis 18 can be clamped.
  • the carrier 34 of Mounting plate 30 approximated by retracting the axis 25 until the disc 38 abuts the hollow profile bar 20.
  • the disc 38 is mounted eccentrically; she extends along the leg of the hollow profile bar 20 to be bent over a greater length than along its leg which is not to be bent, see Figures 4 and 6.
  • the disc 38 is by a positive engagement of the Bending cheek 12 in the disc 38 at the designated in Figure 6 at 39 point taken from the bending beam 12; the procedure is similar to a dovetail joint and remains shortened when the disc 38 their distance increased by the mounting wall 30. Due to the fact that the disc 38 and the extension 12a of the bending cheek turn with the bending beam 12 is the Danger that by the clamping of the hollow section bar 20 at the bending point Ridges in the flanks form 22, less than at rest Jaws.
  • the jaws 33 and 35 form a third clamping device; through her can the hollow profile rod 20 in its lying in front of the pivot axis 18 section be clamped by after striking the disc 38 on the hollow profile bar 20 of the jaw 35 of the fixed jaw 33 is approximated.
  • a fourth clamping device is supported by the bending beam 12, which to this purpose in the vicinity of the mounting plate 30 on the bending cheek 12 fixed, but interchangeable, jaw 40 has, which against the rear Flank of the hollow profile bar is directed, and one through a pressure medium cylinder slidable movable jaw 41 has, which also is replaceable and facing the front edge 22 of the hollow profile rod 20 is.
  • These two jaws 40 and 41 are clearly visible in FIG.
  • the attack surfaces of the jaws 33, 35, 40 and 41 are corrugated, so they have a good frictional engagement with the flanks 22 of the hollow profile bar 20th to reach.
  • Figure 8 shows an example of how the fourth clamping device can be formed.
  • the jaw 40 is immovable with the top of the bending cheek 12 bolted.
  • a pressure medium cylinder 42 is integrated, in which a piston 43 is displaceable, the piston rod 44 from the lid 45 of the pressure cylinder 42 leads out. With the piston rod 44 is the movable jaw 41 bolted.
  • the backstop 13 is only with very little play in the bar profile to dive on the flanks 22 without Deformation of the hollow section bar 20 to be able to exert a strong pressure.
  • Figures 2 and 5 show in conjunction with Figure 10.
  • a parallel to the pivot axis 18 bore 48, which between the recess 46 and the bending support 14 is located.
  • carrier 57 for the counter-holder 13 is a first pin 49 and parallel to it is still in the carrier 57 a further axially parallel bore 50, which of the pin 49 a distance has, which corresponds to the distance of the bore 48 from the recess 46.
  • a second pin 51 In a bore of the fixed jaw 33 is inserted a second pin 51, which also runs parallel to the pivot axis 18.
  • Figure 10 shows an example of the mutual engagement of the counter-holder 13 and of the first clamping part 15 in the region of the bending friction bearing designed as a hinge 14, wherein the engagement is secured by a hinge pin 56.
  • the device not only suitable for bending corners with small radii in hollow section bars, but also for creating continuously curved sections with larger ones Radii, which is also called rounds.
  • the radius also be variable.
  • the conveyor track 3 yet another Roller 60 is provided, which about an axis parallel to the pivot axis 18 61 is freely rotatably mounted on a lever 62, which in turn to a for Pivot axis 18 parallel axis 63, which is fixed to the frame, pneumatically pivotable is.
  • This roller 60 takes over when rounding hollow profile rods instead of bending support 18 the task of an abutment and will, as shown in Figures 11 to 13, on the inner wall 23 of the hollow profile bar 20 swung down, after by pivoting the counter-holder 13 to to stop the first clamping member 15 space for the roller 60 has been created.
  • the roller 60 has a base body 64 with spherical surface 65.
  • the main body 64 is pierced to form a hollow shaft 66.
  • the hollow shaft 66 takes the axis 61 and also carries two discs 67, which the Flank base body 64 and protrude radially beyond the spherical surface 65.
  • the two discs On their inner sides facing each other, the two discs have 67 a stepped contour of the shape that the discs 67 in the radially inner region the base body 64 abut, in a radially outer region in contrast but spring back, so that between the discs 67 and the body 64 on both sides of an annular gap 68 is.
  • Its width is such that it the projecting portions of the flanks 22 of a trained as a web profile Hollow profile bar 20 can record, see Figure 13. In this way it is ensured that the base body 64 with its spherical surface 65 between the flanks 22 can penetrate without deforming them.
  • the discs 67 do not collide with the bending beam 12, this can, as shown in Figure 11 lying below the conveyor track 3 ineffective Be lowered position.
  • the bending beam 12 takes over Round the role 26 an active function, depending on the desired Radius of curvature more or less far above the base level of the conveyor track 3 out and set. Since the lateral surface of the roller 17, the spherical surface 65 of the roller 60 and the lateral surface of the roller 26 each other are assigned so that the hollow profile bar 20 is not in a straight path between can be pushed through them, it is forcibly curved (rounded), and the stronger, the further the role 26 above the basic level of the Conveyor track 3 is also advanced.
  • the required feed adopts the feed device 6 to 9 shown in FIG.
  • the roller 60 shown in Figure 13 is not only suitable for the processing of Bar profiles, but also for the processing of box profiles. Clarify that Figures 14 and 15. Also in this case is through the stepped discs 67, which rest against the flanks of the box profile, ensures that the spherical shell 65 of the roller 60 when pressing the inner wall 23 of the hollow profile bar the flanks 22 are not deformed.
  • the bending beam 12 and the second clamping part 16 extend into the immediate vicinity the role of 17 and thus as close to the apex of the corner to be bent and thereby support the outer wall 21 of the hollow profile bar especially in critical corner area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
EP02017106A 2001-08-03 2002-07-30 Dispositif de cintrage des barres en profil creux Expired - Lifetime EP1281457B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10137766A DE10137766A1 (de) 2001-08-03 2001-08-03 Vorrichtung zum Biegen von Hohlprofilstäben
DE10137766 2001-08-03

Publications (3)

Publication Number Publication Date
EP1281457A2 true EP1281457A2 (fr) 2003-02-05
EP1281457A3 EP1281457A3 (fr) 2004-01-02
EP1281457B1 EP1281457B1 (fr) 2006-04-26

Family

ID=7694046

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02017106A Expired - Lifetime EP1281457B1 (fr) 2001-08-03 2002-07-30 Dispositif de cintrage des barres en profil creux

Country Status (4)

Country Link
EP (1) EP1281457B1 (fr)
AT (1) ATE324205T1 (fr)
DE (2) DE10137766A1 (fr)
ES (1) ES2262731T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112222247A (zh) * 2020-09-27 2021-01-15 严有才 一种柴刀柄辅助固定弯曲设备
CN113603343A (zh) * 2021-06-30 2021-11-05 华勤技术股份有限公司 工件热弯装置
CN115246069A (zh) * 2022-07-01 2022-10-28 张露芳 一种铝合金加工机构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004060805A1 (de) * 2004-11-05 2006-05-11 Lenhardt Maschinenbau Gmbh Verfahren und Vorrichtung zum Biegen von Hohlprofilstäben, insbesondere für Abstandhalterrahmen von Isolierglasscheiben
CN111266439A (zh) * 2020-03-16 2020-06-12 合肥亚辰机械制造有限公司 卡箍成型卷圆机

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0318748A2 (fr) * 1987-12-03 1989-06-07 Franz Xaver Bayer Isolierglasfabrik KG Dispositif de pliage d'un profil creux, en particulier un cadre de barres d'écartement pour vitres isolantes
DE9016129U1 (fr) * 1990-09-10 1991-02-21 Lisec, Peter, Amstetten-Hausmening, Niederoesterreich, At

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Publication number Priority date Publication date Assignee Title
US3885412A (en) * 1973-11-21 1975-05-27 Lawrence T Vance Method of fabricating curved tubing and product thereof
DE3807529A1 (de) * 1988-03-08 1989-09-21 Bayer Isolierglasfab Kg Verfahren und vorrichtung zum biegen von hohlen abstandhalterprofilen
ATE102513T1 (de) * 1990-05-21 1994-03-15 Peter Lisec Verfahren und vorrichtung zum erzeugen gekruemmter abschnitte in hohlprofilleisten.
DE4225878C2 (de) * 1992-08-05 1996-02-29 Bayer Isolierglasfab Kg Verfahren und Vorrichtung zum Biegen eines Bogens an einem hohlen Abstandhalterprofil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0318748A2 (fr) * 1987-12-03 1989-06-07 Franz Xaver Bayer Isolierglasfabrik KG Dispositif de pliage d'un profil creux, en particulier un cadre de barres d'écartement pour vitres isolantes
DE9016129U1 (fr) * 1990-09-10 1991-02-21 Lisec, Peter, Amstetten-Hausmening, Niederoesterreich, At

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112222247A (zh) * 2020-09-27 2021-01-15 严有才 一种柴刀柄辅助固定弯曲设备
CN113603343A (zh) * 2021-06-30 2021-11-05 华勤技术股份有限公司 工件热弯装置
CN115246069A (zh) * 2022-07-01 2022-10-28 张露芳 一种铝合金加工机构
CN115246069B (zh) * 2022-07-01 2024-03-01 泽诚聚(重庆)材料科技有限公司 一种铝合金加工机构

Also Published As

Publication number Publication date
DE50206530D1 (de) 2006-06-01
EP1281457A3 (fr) 2004-01-02
ATE324205T1 (de) 2006-05-15
EP1281457B1 (fr) 2006-04-26
DE10137766A1 (de) 2003-02-27
ES2262731T3 (es) 2006-12-01

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