EP1461169B1 - Dispositif pour plier des profiles - Google Patents

Dispositif pour plier des profiles Download PDF

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Publication number
EP1461169B1
EP1461169B1 EP02750952A EP02750952A EP1461169B1 EP 1461169 B1 EP1461169 B1 EP 1461169B1 EP 02750952 A EP02750952 A EP 02750952A EP 02750952 A EP02750952 A EP 02750952A EP 1461169 B1 EP1461169 B1 EP 1461169B1
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EP
European Patent Office
Prior art keywords
profile
bending
tube
bent
rollers
Prior art date
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Expired - Lifetime
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EP02750952A
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German (de)
English (en)
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EP1461169B9 (fr
EP1461169A1 (fr
Inventor
Peter SCHÜLE
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Individual
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Individual
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Publication of EP1461169B1 publication Critical patent/EP1461169B1/fr
Publication of EP1461169B9 publication Critical patent/EP1461169B9/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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/10—Bending tubes using mandrels or the like by passing between rollers
    • 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
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/08—Bending by altering the thickness of part of the cross-section of the work
    • 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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/05—Bending tubes using mandrels or the like co-operating with forming members

Definitions

  • the invention relates to a device for bending profiles with a profile wall having wall cross-sectional areas at different distances from the axis of the bend to be executed, comprising a bending tool with at least one of the outside of the profile wall associated pressure element, wherein the bending tool has at least one at least one pressure element associated counter-pressure element , and wherein at least one pressure element and at least one counter-pressure element associated therewith can be moved relative to one another while squeezing at least one outer wall cross-sectional area of the profile wall in the cross-sectional direction relative to the axis of the bend.
  • Such a bending device is characterized by the US-A 2901930 as well as the DE 689 018C known.
  • a bending machine in which a cooperating with a impact-generating object (eg jackhammer) tool for curving is used by driving profiled rails.
  • Anvil is associated with two or more movable hammers, which under the Influence of the impact-producing device and in each case as a result of their shape and spacing relative to the rail profile appropriately trained anvil so acting on two adjacent legs of the rail profile such that the rail undergoes an extension corresponding to the desired curvature.
  • the present invention has for its object to provide a bending device that waives the bending of profiles on axial tensile stresses and allows the bending of any shape.
  • the device according to the invention has the advantage that profiles can be produced in one and the same bending device with different bending radii.
  • a counter-pressure element adapted to the profile to be bent such as a mandrel, is fixed in position on inner walls of the profile to be bent and arranged in such a way that the counter-pressure element is opposite a pressure element which can be delivered to the counter-pressure element at different distances therefrom.
  • a delivery can also be made by the counter-pressure element to the pressure element, always so that between the pressure element and the counter-pressure element remains a gap through which the profile to be bent is transported therethrough. When transported through the gap the profile or a profile section is strongly squeezed until the desired bending occurs.
  • the profile intended for bending is crimped to a different extent by a radially directed application of force to the profile in different wall cross-sectional areas, so that a bending occurs due to material expansion and material compression on the profile.
  • the force can be applied via a roller or a roller against a counter-pressure element attached to the profile and the material of the profile between the roller and the counter-pressure element is squeezed to different degrees over the circumference or the contour of the profile.
  • the profile to be bent can be pushed in sections or continuously as seen in the axial direction of the profile more or less strongly and / or stepwise or at different speeds continuously through the bending device according to the invention.
  • the outer dimension forming wall between two tools is partially compressed by advancing the workpiece to be bent (profile), ie squeezed.
  • profile the stretch required for bending caused by compression (crushing) of the wall on one side of the workpiece.
  • the material is compressed (squeezed) in the radial direction and consequently causes an expansion in the axial direction, so that a bend occurs in a profile.
  • compression on the opposite side for example a pipe wall, can likewise occur in the axial direction of the profile to be bent.
  • the degree of bending can be adjusted relatively accurately by the corresponding force, with no impact movements must be applied to the prior art and the risk of overstretching is avoided.
  • Pressure elements and counter-pressure elements are delivered to each other as close as desired and by the predetermined gap cross section, the bending can be effected as desired.
  • the printing and counter-pressure elements can be moved in the radial direction so that the gap size and / or the gap shape changes.
  • the material surface is in a visually better condition, and there are no additional tools such as wrinkles needed to keep the surface in a visually good condition.
  • By turning the profile to be bent and then upsetting any bending shapes can be made.
  • By adjusting the feed and thus the size of the sections is also in a simple way, the bend, ie the bending extent or the bending direction, influenced.
  • the feed is not only intermittent, but can also be continuous.
  • a correspondingly configured device of an exemplary embodiment has a die for guiding the material to be bent, wherein a roller or roller introducing the force on the die can be moved laterally in the direction of the workpiece. Furthermore, an insertable into the workpiece (inserted) mandrel is provided, against which the roller or roller is movable (predetermined delivery) to compress the workpiece material between the mandrel and the roller or roll (squeezing) and to an extension in the axial direction cause.
  • a device for bending profiles has at least one roller, roller as a force-introducing tool.
  • the application of force to the roller surface can be different.
  • the at least one pressure element as a movable roller or movable rollers and the counter-pressure element as the one or more rollers opposite mandrel is formed, which is at least partially positioned adjacent to the inner periphery of the hollow profile.
  • the gap is adjustable in size and / or cross-sectional shape.
  • the one or more printing elements to the or the counter-pressure elements can be any gap shapes and sizes set, which can cause a variety of bruises on the passed through the gap profile wall sections. Bend radii in a wide range and also a wide variety of bending shapes can be produced.
  • the profile to be bent can be pushed through the gap and / or pulled through.
  • This has the advantage that, depending on the profile size, material thickness of the profile to be bent and / or profile contour most different modes of transport can be selected to pass the profile to be bent by the limited pressure and counter-pressure elements gap
  • the bending tool pressure - And counter-pressure elements
  • axial mentor can be achieved in order to achieve the desired bend in the profile to be bent.
  • the printing elements may be formed as rollers and / or rollers and as counter-pressure elements offer themselves to mandrel shapes.
  • the counter-pressure elements abut against inner wall cross-sectional areas of the profile wall to be bent, and it is understood that the outer contours of the pressure elements and the counter-pressure elements are adapted to the profile shape to be bent.
  • one or more rollers are rotatably mounted parallel to the axial course of the profile to be bent or with a roller rotation axis running transversely to the axial course of the profile to be bent.
  • the one or more rollers can be pressurized differently over their extent transversely to the axial course of the profile to be bent, so that different bending directions can be generated on a profile to be bent with this pressure setting.
  • the bending direction of a profile to be bent can be influenced by the fact that the profile in the bending direction via holding means, such as a chuck, held stationary during a bending operation, axially displaced and / or rotated about an axis of the profile.
  • holding means such as a chuck
  • the bending device has a stationary profile guide housing.
  • Around the profile guide housing around an eccentric unit is rotatably mounted and regardless of the eccentric unit or the pressure elements is rotatably mounted on the eccentric unit.
  • the one or more pressure elements can be adjusted independently of the eccentric unit in their assignment to the profile guide housing.
  • the eccentric unit can be formed from a first and a second circular one above the other arranged in a circle rotatable relative to each other rotatable tubes.
  • the circular tubes can be fixed in any rotational position.
  • the one or more pressure elements may be adjustable in one embodiment of the bending device according to the invention via one or more wedge bars or one or more conical sleeves in their assignment to the profile guide housing.
  • pressure elements are arranged to be rotatable about the profile guide housing, material squeezing over the circumference of a profile can take place relatively uniformly.
  • the eccentric unit is adjustable hydraulically or via a transmission.
  • the device according to the invention can profiles with arbitrary cross-sectional shapes and circumferentially closed profiles, such as circular tubes, with different bending radii and bends of the profiles in different directions in high form and repeatability produced. Cracks and uncontrolled deformations on the profiles to be bent are avoided.
  • the spatial course of the bending of a profile is only minimally limited by the bending tools, so that any shapes can be made with one and the same bending device on the profile to be bent.
  • Fig. 1 10 shows a bending principle for a non-inventive bending device with a die 11, through which a circular tube 12 can be pushed.
  • the die 11 holds and stabilizes the tube 12 in its orientation.
  • the die 11 is arranged stationary.
  • a mandrel 13 is arranged, which rests against the inner circumference of the tube 12 and in diameter is as large as the free tube diameter of the tube 12.
  • the mandrel 13 is fixedly connected to a mandrel bar 14 through which the mandrel thirteenth is fixed in position and is immovably disposed in the tube 12 during a bending process.
  • the tube 12 can be moved in the direction of arrow 15 through the die 11 and over the mandrel 13 away.
  • a movable in the direction of arrows 16 punch 17 is arranged at the end of the die 11 so that it also presses on a pressure on the tube 12 on the mandrel 13, which forms a stamp formed for 17 abutment.
  • the punch 17 comprises in the embodiment of Fig. 1 the half pipe outer circumference
  • the punch 17 can be pressed so strong on the tube outer peripheral surface that the tube 12 is squeezed in the region of the punch 17 and thus elongated. This results in a bend on the tube 12. It is understood that the tube 12 can be crimped with a plurality of arranged around the circumference of the tube 12 movable punches.
  • movable punches may be used, which cover different outer peripheral surfaces of the tube, and also the cross-sectional shape of a mandrel is always adapted to the inner circumference of a tube to be bent, so that the mandrel an effective abutment to can form the movable stamps.
  • the pipe of Fig. 1 in the interior of which an axially displaceable mandrel 13 is arranged, is machined by a compression (crushing) in the radial direction and subsequent expansion in the axial direction of a pipe wall between the movable punch 17 and the mandrel 13.
  • the die 11 serves to guide and as an abutment maintain the punch 17 to receive the force applied by the punch 17.
  • the tube 12 By axial section feed of the tube 12, the tube 12 can be bent in the appropriate desired orm.
  • a wrinkle smoother can also be used here. By the appropriate introduction of force the desired bend is determined.
  • Fig. 2 shows the arrangement of the bending principle 10 from the Fig. 1 in a view II-II.
  • the tube 12 is held stable in the die 11, and the diameter shape of the tube 12 is ensured by the perfect filling of the free pipe diameter even if the punch 17 is pressed in the direction of arrows 16 so strong on the outer circumference of the tube 12 that the tube 12 is squeezed in the contact area of the punch 17 on Rohrau hybridide.
  • the punch 17 encloses the tube 12 substantially to half of the circumference, and over this area causes the punch a compression pinching in the radial direction and an elongation of the tube 12 in the axial direction.
  • the punch 17 opposite peripheral surface of the pipe to be bent 12 is located in the die eleventh
  • FIG. 1 shows an embodiment of a bending principle 20 according to the invention.
  • a die 21 guides a circular tube 22 to be bent in an axially stable manner even under the introduction of force, and a mandrel 23 arranged in the tube 22 which can be fixed in place via a mandrel rod 24 ensures that that even under the action of force on the outer circumference of the tube 22 whose original pipe diameter or pipe shape is not changed.
  • the circular tube 22 can be pushed continuously in the direction of arrow 25 through the die 21 for bending the tube 22.
  • rollers 27 In the direction of arrow 26 rotate on the outer circumference of the tube 22 rollers 27 which are adapted to the outer contour of the tube 22.
  • the rollers 27 can press on their roller surfaces 28 differently strong on the outer circumference of the tube 22 and thus bend under compression of the circular tube 22.
  • Fig. 4 shows that in Fig. 3 illustrated bending principle in the view IV-IV.
  • the tube 22 is stabilized over the mandrel 23 in shape, and on the outer circumference of the tube 22, the rollers 27 press on their roller surfaces 28 different degrees, so that a desired bend on the tube 22 can be generated.
  • the rollers 27 can be moved to each other to different degrees and rotate in each direction in the direction of arrow 26.
  • In the fig. 4 is dash-dotted yet the axis of rotation of the rollers 27 located. It is also possible to tilt the axis of rotation of the rollers 27 from the position shown in the figure, so that the necessary force for the crushing of a hollow profile can be introduced differently strong over the roller surface on the hollow profile to be bent.
  • Fig. 5 shows a bending principle 30 according to the invention with a stationary arranged die 31 and guided in the die 31 tube 32 which has a circular cross-section.
  • a mandrel 33 is arranged, which is pushed over a mandrel 34 into a position suitable for bending the tube 32.
  • the to be bent tube 32 passes in the direction of arrow 35, the die 31 and the arrow direction 36 rollers 37 are delivered as pressure elements of Rohrau 22wandung so that when pushing the tube 32 through the die 31 and positioned position of the mandrel 33, the tube 32 on the outer peripheral surface is squeezed.
  • the rollers 37 are mounted in a roller carrier 38 which can rotate about the tube 32 to be bent.
  • Fig. 6 shows a view VI-VI Fig. 5 wherein the roller carrier 38 obscures the rollers 37.
  • the mandrel 33 is arranged so that it fills the entire cavity of the tube 32 and so can form an effective counter-bearing and counter-pressure element to the pressure elements, here rollers 37.
  • the rollers 37 are delivered in the direction of arrow 36 to the mandrel 33 so far that only a gap between the mandrel 33 and the rollers 37 remains, which causes the passage of the tube 32 through the gap the desired pinch and thus the desired bend.
  • Fig. 7 shows a further not according to the invention bending principle 40 in side view.
  • an H-profile 42 to be bent is displaceably guided and on the side inner walls and on the web of the H-profile 42 to be bent, jaws 43 are applied on both sides, which form the counterpressure elements.
  • the outer surfaces of the bending H-profile 42 are squeezed.
  • the upper roller 47 is closer to the jaws 43 delivered as the lower roller 47. During the bending process there is no change in delivery.
  • Fig. 8 is an VIII-VIII view of Fig. 7 shown, and the transport direction of the H-profile 42 to be bent by the bending device takes place from the plane of the drawing.
  • the jaws 43 stabilize the H-profile 42 to be bent on both sides, and the bending of the H-profile 42 is triggered via the rollers 47, which may also be designed as rollers.
  • the rollers 47 which may also be designed as rollers.
  • the delivery of the rollers 47 to the jaws 43 is indicated.
  • FIGS. 7 and 8 the bending principle is shown using an H-profile 42 with an upper roller 47 as a force-introducing tool and a lower roller 47 as an abutment and / or also as a force-introducing tool.
  • Side of the H-profile 42 are, as in the Fig. 8 Even better seen, provided jaws 43, between which and the rollers 47, the compression of the material takes place.
  • the initiation of the force required for the crushing of the H-profile 42 takes place via the rollers 47, wherein the introduction of force across the roller surface can be different.
  • Fig. 9 shows another not according to the invention bending principle 50 in side view with an H-profile to be bent 52.
  • rollers / rollers 53 are used and the bending H-profile 52 is in the direction of arrow 55 during a Bending process transported.
  • the delivery of the printing elements here rollers / rollers 57, indicated, with the rollers 57 press on the outer surface of the bending H-profile 52.
  • both the rollers 53 and the rollers 57 rotate.
  • Arrows 56 ' show the direction of feed of the rollers 53 (counter-pressure elements) to the inner wall of the H-profile 52.
  • Fig. 10 shows a view XX of Fig. 9 in which the H-profile 52 to be bent is guided out of the drawing plane when passing through a bending process.
  • the rollers 57 urging in the direction of arrow 56 on the outer surfaces of the bending H-profile 52 and the rollers 53 form the counter-pressure element and can also be pressed in different directions in the direction of arrow 56 'on the inner walls of the H-profile to be bent 52.
  • the bending principle 50 from the FIGS. 9 and 10 is particularly advantageous for continuous feed due to the reduced wear associated with the use of rolls during a bending process. It is understood that not necessarily four rollers 53 must be used as counter-pressure elements, and a bend is possible even with simpler H-profiles 52 with thin walls when only one roller 57 is used for the.
  • Fig. 11 shows a non-inventive bending principle 60 for a U-profile 62 to be bent, in which a roller 63 or an anvil is used as a counter-pressure element.
  • the U-profile 62 to be bent passes over the roller 63 or over the anvil, for example out of the plane of the drawing and via a desired delivery in the direction of the arrow 66 of rollers 67 or rolls, the desired bending at the U-profile 62.
  • Profile 62 are performed.
  • the Rollers 67 can be subjected to varying degrees of pressure stress, viewed over their roller surface, so that a wide variety of bending shapes are possible with the bending principle 60 according to the invention.
  • Fig. 12 shows a bending device 70 according to the invention in side view with a bending tool 71 for bending circular tubes 72.
  • a bending tool 71 for bending circular tubes 72.
  • the tube 72 can be pushed in the direction of arrow 75 by the bending tool 71.
  • a drive belt 76 which is connected to a rotary drive motor 77 for the bending tool 71, the bending tool 71 can rotate about the circular blank 72.
  • An adjustment device for an eccentric unit of the bending device 70 is shown at 78, with which the bending tool 71 can be moved out with its axis of rotation from the longitudinal axis of the circular tube 72.
  • the axis of rotation of the bending tool 71 with the pipe to be bent 72 is congruent. If the axis of rotation - moved to the longitudinal axis of the tube 72, the bending tool 71 presses differently on wall cross-sectional areas of the profile wall of the pipe to be bent 72.
  • a pipe feed unit 80 can the tube 72 to be bent are pushed through the bending tool 71.
  • the chuck 79 can also be rotated if necessary, so that with a rotation of the tube 72 via the chuck 79 different bending directions of the pipe to be bent 72 can be achieved.
  • Fig. 13 shows a section of the bending device according to the invention with the bending tool 71 in section.
  • the tube to be bent 72 passes through a profile guide housing 81, 82, in which the pipe to be bent 72 is guided in a positionally stable displaceable manner.
  • the tube 72 to be bent is stabilized by a mandrel 73, which is held stationary by the mandrel 74 during a bending process in a desired position.
  • the eccentric unit is arranged, which is rotatable to the profile guide housing 81, 82.
  • the eccentric unit is formed from a first and a second tube 83, 84, each of which, viewed over its circumference, have different wall thicknesses.
  • the tubes 83, 84 can be rotated more or less strongly against one another, so that the bending tool 71 rotatably mounted on the eccentric unit can be displaced out of the longitudinal axis of the tube 72 to a greater or lesser extent. If the tubes 83, 84 are rotated relative to one another, the axes of the eccentric unit and the circular tube 72 to be bent are no longer congruent, and the bending tool 71 rotatably mounted on the eccentric unit rotates eccentrically about the longitudinal axis of the tube 72 to be bent.
  • the bearing of the bending tool 71 on the second tube 84 of the eccentric unit is indicated in the figure by the reference numeral 85.
  • rollers 86 are formed as pressure elements, which are rotatably mounted in axes 87.
  • the rollers 86 press on their roller surfaces 88 on the outer peripheral surface of the tube to be bent 72. If the bending tool 71 rotates about the tube 72 to be bent, the rollers 86 squeeze in different wall cross-sectional areas to be bent Tube 72 different degrees, so that from this force introduction a bending of the tube 72 takes place. In different wall section areas pipe to be bent 72 is compressed differently elongated.
  • the rollers 86 can be moved over one or more wedge bars 89 in their delivery to the tube 72 to be bent.
  • the rollers 86 are mounted in a roller housing 90 which is slidably mounted in the housing of the bending tool 71. If the wedge bars 89 are displaced in the direction of arrow 91, then the diameter of a roller circulation path for the rollers 86 decreases, and the pressure on the circular tube 72 to be bent is increased. Also, the pressure that the rollers 86 exert on the outer peripheral surface of the circular tube 72 to be bent can be reduced by sliding the wedge bars 89 back against the direction of the arrow 91.
  • Fig. 14 shows in a simplified representation in section again an adjustment of the rollers 86 wedge bars 89, which are part of the bending tool 71.
  • the profile guide housing 81, 82 is indicated in the figure, it leads the tube 72 to be bent in his by the bending device.
  • the mandrel 73, held on mandrel 74, on the one hand supports the profile contour and serves on the other hand as an abutment for the rollers 86 which form the pressure element.
  • the rollers 86 are rotatably mounted in a roller housing 90 which is displaceable within the housing of the bending tool 71 via the wedge bars 89.
  • the bending tool rotates in the in Fig.
  • Fig. 15 shows a view XV-XV of Fig. 14 ,
  • the tube 72 to be bent is internally filled by the mandrel 73, and on the outer peripheral surfaces rollers 86 press on the outer circumference of the tube 72.
  • the rollers 86 are rotatably supported on shafts 87 disposed in the roller housing 90.
  • the roller housing 90 can be moved via wedge scans 89.
  • the bending tool can rotate in the direction of arrow 92 about the tube 72 to be bent.
  • the in the Fig. 15 Components not described in more detail are parts of the bending tool 71, which hold together and support the individual printing elements, here roller 86
  • Fig. 16 shows a further embodiment of a bending tool 100, which can be used in a bending device according to the invention.
  • a profile guide housing 101 guides a tube 102 to be bent in a positionally stable manner by means of the bending device according to the invention, and a mandrel 103 supports and secures the cross-sectional shape of the tube 102 to be bent.
  • the mandrel 103 is held over the mandrel rod 104, and the tube 102 to be bent can be passed over Mandrel 103 and the mandrel 104 through the profile guide housing 101 in the arrow direction 105 are pushed.
  • the rollers 106 can be adjusted at a distance from each other and via this adjustment the pressure on the outer peripheral surface of a tube 102 to be bent can be increased or decreased become.
  • the rotatably mounted in a cage rollers 106 are driven via the rotation of the cone sleeve 107 via static friction.
  • Fig. 17 is a view. XVII-XVII of Fig. 16 shown.
  • the tube to be bent 102 is completely filled in the interior lurch the mandrel 103, and against the mandrel 103 is about the rollers 106, the tube to be bent 102 squeezed by the bending tool in one of.
  • Arrow directions 106 rotates about the pipe 102 to be bent.
  • the conical rings 107 allow a different displacement of the rollers 106, which are rotatably mounted in a cage, in weighting the outer peripheral surface of the tube to be bent 102nd
  • Fig. 18 shows a different section through bending tool, as it can be used in the bending device according to the invention.
  • a tube 112 to be bent is stabilized by a mandrel 113, which simultaneously forms an abutment for the pressure elements.
  • rollers 116 are rotatably mounted, which squeeze the pipe to be bent 112 at a rotational rotation in one of the arrow directions 118, seen over the circumference of the tube to be bent 112, different degrees, so that the tube to be bent 112 112 different after a bending operation has strong pipe wall cross-sections in the bending area.
  • the roller housing 115 Via wedge bars 119, the roller housing 115 can be moved within the housing of a bending tool.
  • FIGS. 13 to 17 shown Axialzu einen to a pipe to be bent is additionally influenced by an eccentric which can rotate a rotatable about a pipe to be bent bending tool about the pipe longitudinal axis of the pipe to be bent.
  • Fig. 19a is shown very schematically the construction of an eccentric unit 125, as it may be formed in a bending device of the type according to the invention.
  • the eccentric unit 125 is formed by two, seen in cross-section, eccentric tubes 126, 127 which are rotatable relative to each other and can be fixed in any rotational position.
  • the two tubes 126, 127 are shown in a zero position, ie that the total wall thickness, seen in cross-section, is constant over the entire circumference of the eccentric unit 125. That is, a bending device rotating on a circular path 129 rotates in a zero position with an axis of rotation which is congruent with the longitudinal axis of the pipe to be bent.
  • Fig. 19b an extreme position of the eccentric unit 125 is shown.
  • the tubes 126, 127 are maximally rotated with respect to their respective eccentricity. That is, a bending tool rotates on the circular path 129 about the eccentric unit 125, so in the uppermost point of the circulation path, the bending tool is pressed maximum to the outer peripheral surface of the tube to be bent, and at the bottom of the circular path 129, the pressure elements have the maximum distance (smallest system pressure) to the outer peripheral surface of the pipe to be bent.
  • a device for bending a pipe 72 the pipe 72 is guided by a bending tool 71 which rotates about a profile 81, 82 and about an eccentric unit formed by two tubes 83, 84.
  • Rollers 86 serve as pressure elements and a mandrel 73 as an abutment, and between the rollers 86 and the mandrel 73, the pushed through the profile guide housing 81, 82 tube 72 is squeezed different degrees at different areas, so that by an elongation and a compression of the Tube 72 is generated a bend.
  • a measure of the size of a bending radius on a pipe 72 to be bent is the eccentricity set via the eccentric unit and / or an axial feed of the rollers 86 to the profile guide housing 81, 82.
  • bending tool 71 With bending tool 71 according to the invention, different bending radii can be applied in one and the same bending device form a pipe to be bent 72 by the delivery, ie the distance between the rollers 86 and the mandrel 73 changes. Uncontrolled cracks or deformations do not occur.
  • the spatial sale of the bend of a pipe 72 to be bent is only minimally limited by the bending tool 71 used, so that any shapes are produced on a profile to be bent.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Claims (13)

  1. Dispositif pour cintrer des profilés (22, 32, 72, 102, 112) dotés d'une paroi de profilé présentant des zones de section transversale de paroi situées à des distances variables de l'axe de la courbure, qui comprend un outil de cintrage avec au moins un élément de pression (27, 37, 86, 106, 116) et au moins un élément de contre-pression (23, 33, 73, 103, 113) associé à un élément de pression, au moins un élément de pression (27, 37, 86, 106, 116) et au moins un élément de contre-pression (23, 33, 73, 103, 113) associé à celui-ci étant mobiles l'un par rapport à l'autre dans une direction de section transversale associée à la section transversale de la paroi de profilé et étant positionnés l'un par rapport à l'autre en laissant une fente dont la largeur, tout au moins dans une zone de section transversale qui est associée à une zone de section transversale de la paroi de profilé située à l'extérieur par rapport à l'axe de la courbure, est plus petite que la zone de section transversale de paroi associée du profilé (22, 32, 72, 102, 112) à cintrer, lequel peut être transporté à travers la fente, tout en écrasant et en étirant dans la direction longitudinal du profilé la zone de section transversale de la paroi de profilé qui est située à l'extérieur par rapport à l'axe de la courbure, sachant qu'une zone de section transversale de la paroi de profilé située à l'intérieur par rapport à l'axe de la courbure demeure non sollicitée dans la direction de section transversale ou est sollicitée des deux côtes en étant écrasée et étirée dans la direction longitudinale dans une moindre mesure que la zone de section transversale de la paroi de profilé située à l'extérieur, caractérisé en ce que l'élément ou les éléments de pression sont réalisés sous forme de galet(s) et/ou de cylindre(s) (27, 37, 86, 106, 116), et en ce qu'un mandrin (23, 33, 73, 103, 113) est prévu en tant qu'élément de contre-pression, qui peut être appliqué contre la face interne de la paroi de profilé.
  2. Dispositif selon la revendication 1, caractérisé en ce que la taille et la forme de section transversale de la fente sont réglables.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que le profilé (22, 32, 72, 102, 112) est poussé et/ou tiré à travers la fente.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le galet, cylindre ou plusieurs galets, cylindres (27, 37, 86, 106, 116) sont montés de manière rotative parallèlement à l'étendue axiale du profilé (22, 32, 72, 102, 112) ou avec un axe de rotation s'étendant transversalement par rapport à l'étendue axiale du profilé (22, 32, 72, 102,112).
  5. Dispositif selon la revendication 4, caractérisé en ce que le(s) galet(s) et/ou cylindre(s) (27, 37, 86, 106, 116) et/ou le mandrin (23, 33, 73, 103, 113) peuvent être soumis à des pressions qui varient sur leur étendue orientée transversalement par rapport à l'étendue axiale du profilé (22, 32, 72, 102, 112),
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que, durant une opération de cintrage, le profilé (72) est maintenu fixement par des moyens de fixation tels qu'un mandrin de serrage (79), est mobile axialement et/ou peut tourner autour d'un axe du profilé (72).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le dispositif de cintrage présente un boîtier de guidage de profilé fixe (81, 82) et une unité à excentrique (83, 84) entourant de façon rotative le boîtier de guidage de profilé (81, 82), unité sur laquelle le ou les galet(s) et/ou le ou les cylindre(s) (86) sont disposés en étant montés de façon rotative indépendamment de l'unité à excentrique (83, 84).
  8. Dispositif selon la revendication 7, caractérisé en ce que le positionnement du ou des galet(s) et/ou du ou des cylindre(s) (86) par rapport au boîtier de guidage de profilé (81, 82) est réglable, indépendamment de l'unité à excentrique (83, 84).
  9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que l'unité à excentrique est constituée d'un premier et d'un second tube (83, 84), les tubes (83, 84) vus en coupe transversale étant disposés l'un au-dessus de l'autre et prouvant être tournés l'un par rapport à l'autre, et les tubes (83, 84) présentant, au niveau du pourtour, des épaisseurs de paroi différentes.
  10. Dispositif selon la revendication 9, caractérisé en ce que les tubes circulaires (83, 84) peuvent être immobilisés dans chaque position en rotation.
  11. Dispositif selon l'une des revendications 5 à 10, caractérisé en ce que le ou les galet(s) et/ou le ou les cylindre(s) (86, 106) peuvent être positionnés de différentes manières par rapport au boîtier de guidage de profilé (81, 82, 101) par le biais d'une ou de plusieurs crémaillères tangentielles (89) ou d'une ou de plusieurs douilles coniques (107).
  12. Dispositif selon l'une des revendications 1 à 11, caractérisé en ce que le ou les galet(s) et/ou le ou les cylindre(s) (27, 37, 86, 106, 116) sont disposés de manière à pouvoir tourner autour du profilé à cintrer (22, 32, 72, 102, 112).
  13. Dispositif selon l'une des revendications 7 à 12, caractérisé en ce que l'unité à excentrique (83, 84) peut être déplacée par voie hydraulique, pneumatique ou par le biais d'une transmission mécanique.
EP02750952A 2001-05-21 2002-05-18 Dispositif pour plier des profiles Expired - Lifetime EP1461169B9 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10124801 2001-05-21
DE10124801 2001-05-21
PCT/EP2002/005523 WO2002094469A1 (fr) 2001-05-21 2002-05-18 Dispositif et procede pour plier des profiles

Publications (3)

Publication Number Publication Date
EP1461169A1 EP1461169A1 (fr) 2004-09-29
EP1461169B1 true EP1461169B1 (fr) 2009-01-21
EP1461169B9 EP1461169B9 (fr) 2009-08-12

Family

ID=7685634

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02750952A Expired - Lifetime EP1461169B9 (fr) 2001-05-21 2002-05-18 Dispositif pour plier des profiles

Country Status (5)

Country Link
US (1) US7159432B2 (fr)
EP (1) EP1461169B9 (fr)
AT (1) ATE421393T1 (fr)
DE (1) DE50213246D1 (fr)
WO (2) WO2002094470A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004003681A1 (de) * 2004-01-24 2005-08-11 Klingelnberg Ag Biegevorrichtung mit Pendelwalzrollen
SE528078C2 (sv) * 2004-02-27 2006-08-29 Ortic Ab Sätt att i en produktionslinje forma profiler
JP5357060B2 (ja) * 2007-03-02 2013-12-04 エナシー トランスポート エルエルシー 圧縮流体の格納容器への流し込み及び流し出しのための装置及び方法
DE112011101931T5 (de) * 2010-06-09 2013-08-22 Magna International Inc. Vorrichtung und Verfahren zum Ausbilden von Biegungen in rohrförmigen Werkstücken
JP6467317B2 (ja) * 2015-08-12 2019-02-13 新日鐵住金株式会社 金属材の加工装置および加工方法
CN107336426B (zh) * 2017-08-14 2023-02-28 岳阳高澜节能装备制造有限公司 一种pvdf弯管模芯

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Publication number Priority date Publication date Assignee Title
US1158294A (en) * 1915-01-07 1915-10-26 Internat Barrel Company Sheet-metal-hoop-forming machine.
US2047084A (en) * 1935-04-22 1936-07-07 Kelsey Hayes Wheel Co Method of forming brake shoes
DE689018C (de) * 1936-12-04 1940-03-08 Blohm & Voss Kom Ges A Akt Mit einer schlagerzeugenden Vorrichtung zusammenwirkendes Werkzeug zum Kruemmen von Profilen durch Treiben
DE719986C (de) 1939-04-07 1942-04-22 Blohm & Voss Mit einer schlagerzeugenden Vorrichtung, z.B. einem Presslufthammer, zusammenwirkendes Werkzeug zum Kruemmen von Profilschienen durch Treiben
US2901930A (en) * 1954-08-10 1959-09-01 Wilman Sigismond Tube bending machines
US3339392A (en) * 1965-04-06 1967-09-05 Pittsburgh Des Moines Steel Bending structural shapes
US3575026A (en) * 1968-01-24 1971-04-13 Pines Engineering Co Inc Rolling head for roto-form machine
JPS5311273B2 (fr) 1973-12-27 1978-04-20
DE2903929A1 (de) 1979-02-02 1980-08-07 Eckold Vorrichtung Verfahren zum formrichten von blechteilen, vorrichtung zu seiner durchfuehrung und anwendung des verfahrens
DD212199A1 (de) * 1982-12-29 1984-08-08 Sachsenring Automobilwerke Vorrichtung zur fertigung gekruemmter profile, insbesondere stossstangenprofile
JPS60115331A (ja) * 1983-11-25 1985-06-21 Hitachi Ltd チャンネル材の圧延曲げ方法および装置
DE3523025A1 (de) 1985-06-27 1987-01-02 Siemens Ag Verfahren und vorrichtung zum biegen von langgestreckten metallischen werkstuecken
DE3823675A1 (de) 1988-07-13 1990-01-18 Dornier Gmbh Einrichtung zum biegeumformen oder richten von werkstuecken durch plastische formaenderung
JP3733176B2 (ja) 1996-07-10 2006-01-11 株式会社オプトン 曲げ加工装置
DE19733932A1 (de) 1997-08-06 1999-02-11 Suban Ag Verfahren zur Biegung von geschlossenen Hohlprofilen mit Mediumunterstützung
DE29716272U1 (de) 1997-09-10 1999-01-21 Eckold Gmbh & Co Kg, 37444 St Andreasberg Vorrichtung zur spanlosen Umformung von Blechen und Profilen

Also Published As

Publication number Publication date
US20040244453A1 (en) 2004-12-09
EP1461169B9 (fr) 2009-08-12
US7159432B2 (en) 2007-01-09
DE50213246D1 (de) 2009-03-12
WO2002094469A1 (fr) 2002-11-28
EP1461169A1 (fr) 2004-09-29
WO2002094470A1 (fr) 2002-11-28
ATE421393T1 (de) 2009-02-15

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