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EP0561025B1 - Dispositif pour cintrer des parties de tubes, en particulier pour la fabrication de terpentins - Google Patents

Dispositif pour cintrer des parties de tubes, en particulier pour la fabrication de terpentins Download PDF

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Publication number
EP0561025B1
EP0561025B1 EP92104760A EP92104760A EP0561025B1 EP 0561025 B1 EP0561025 B1 EP 0561025B1 EP 92104760 A EP92104760 A EP 92104760A EP 92104760 A EP92104760 A EP 92104760A EP 0561025 B1 EP0561025 B1 EP 0561025B1
Authority
EP
European Patent Office
Prior art keywords
bending
pipe
axis
drive
fixed
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
EP92104760A
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German (de)
English (en)
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EP0561025A1 (fr
Inventor
Heinz Förster
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0561025A1 publication Critical patent/EP0561025A1/fr
Application granted granted Critical
Publication of EP0561025B1 publication Critical patent/EP0561025B1/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
    • 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
    • B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
    • B21D11/07—Making serpentine-shaped articles by bending essentially in one plane

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • Pipes or pipe coils produced with such devices are used in particular for convection heating surfaces of steam generators and heat exchangers. They are made from a straight tube corresponding to the length of the coil.
  • a device for producing alternately bent sections on a tube, from which the preamble of claim 1 is based, is known from FR-A-2 125 193.
  • the two bending rollers can alternately about the axis of one or about the axis of other bending rollers can be pivoted.
  • One bending roller is mounted on a side arm which projects from a rotatable sleeve through which the axis of the other bending roller passes.
  • a complicated gearbox can either rotate the sleeve or rotate the axis passing through the sleeve.
  • the bending roller unit is pivoted about the axis of rotation of one or the other bending roller by means of toothed racks which form the bending drive.
  • a pipe bending device which has a bending table which is rotatable about a vertical axis.
  • a sliding block is guided in the bending table, which can be moved radially.
  • the axes of rotation of two bending rollers are fixed on the sliding block.
  • the sliding block can be moved so that the axis of rotation of one or the other bending roller reaches the center of the turntable.
  • the bending roller unit is provided with a lever which can be pivoted around the bending roller unit to rotate the axis of rotation that is in the center of the turntable.
  • the invention has for its object to provide a device of the generic type, which is particularly simple and particularly easy to use.
  • a thornless cold bending of the tube also takes place in the invention.
  • the measures according to the invention it is possible in a particularly simple manner to bend alternately in opposite directions, ie alternately left and right, so that tube coils of any length can be produced in one plane according to a predetermined tube length.
  • one bending roller namely the stationary bending roller, takes over the function of a template, while the other pivotable bending roller takes over the function of a pressure roller that bends the tube around the template.
  • This type of bending technology also makes it possible to ensure the quality of the pipe in the bent section.
  • the invention provides a particularly simple embodiment of the bending drive which can be alternately coupled to one axis of rotation or the other axis of rotation.
  • Claim 2 specifies an advantageous measure by means of which an axis of rotation can optionally be fixed in place relative to the machine table and can be released again.
  • the advantageous embodiment according to claim 3 ensures that the two bending rollers are combined to form a stable unit, only this relatively small tool block being pivoted for pipe bending.
  • Claims 4 to 8 indicate advantageous developments of this tool block.
  • pipe includes not only hollow elongated round bodies, but also elongated, solid bodies with a circular cross-section, for example normal round metal material such as wires, rods or the like, even if the device according to the invention can be used particularly advantageously for the production of pipe coils is.
  • a device for pipe bending is attached to a stationary machine table 1. It has a drive pulley 2 mounted on the machine table 1, which can be pivoted about its central axis 3 by means of a drive motor 4 attached to the underside of the machine table 1.
  • the drive motor 4 is either provided with a reversing gear or can rotate in both directions, so that the drive disk 2 can be driven in rotation in both directions about the axis 3.
  • the drive disk 2 is provided on its upper side 5 facing away from the machine table 1 with a guide groove 6.
  • the central longitudinal axis 7 intersects the central axis 3 of the drive pulley 2 and extends at a right angle to it.
  • a sliding block 8 is arranged, which is freely displaceable in the direction of the axis 7 in the guide groove 6, but is guided largely without play transversely thereto.
  • a pipe bending tool block 9 can be coupled to the sliding block 8.
  • This has a lower coupling 10 and an upper coupling 11, which consist of approximately triangular plates with rounded corners and have the same outline shape.
  • Two bending rollers 12, 13 are arranged between the lower and the upper coupler, and the two coaxial couplers 10, 11 are arranged around pivot pins by means of bearing bushes 14 15,16 are rotatably mounted. These axes of rotation 15, 16 run parallel to the central axis 3 of the drive pulley 2.
  • the bending rollers 12, 13 are of identical design; they each have an approximately semicircular groove 17 on their circumference, the radius r of which is somewhat smaller than half the diameter of a tube 18 to be bent. On both sides of the groove 17, the bending rollers 12, 13 have a cylindrical circumferential region 19, on which they abut one another, but are also arranged with little play to one another.
  • toothed disks 12 1/13 1 can be arranged on the tops of both rollers.
  • a tube driver 20 On the upper coupling 11, a tube driver 20 is attached, which has a linear drive arranged on the upper coupling 11 in the form of a hydraulically or pneumatically actuated piston-cylinder drive 21, the piston rod of which is provided with a fork-shaped gripper 22, which in the Intermediate space 23 between the upper and the lower coupling 11, 10 can be moved in or pulled out of the latter.
  • the tube driver 20 is arranged between the two axes of rotation 15, 16, in such a way that it is arranged on the common tangent of the adjacent bending rollers 12, 13. He can intervene in an adapted depression 24 in the lower coupling 10 to increase the stability.
  • a machine boom 25 is attached to the machine table 1, which partially covers the tool block 9, specifically when the device is in its starting position is in which the central longitudinal axis 7 of the guide groove 6 is perpendicular to the feed direction 26 of the tube 18 and when the sliding block 8 is in a central position in the guide groove 6 and when the tool block 9 has such a position that the means -Axis 3 runs through the contact area 27 of the bending rollers 12, 13, in which the latter have the common tangent mentioned.
  • Couplings 28, 29 are mounted on the boom 25 at a distance a, which corresponds to the distance a between the two axes of rotation 15, 16.
  • These each consist of a linear drive in the form of a hydraulically actuated piston-cylinder drive 30, the respective piston rod plunger 32 of which has axial contact with a spacer 31 and can be inserted into or removed from the bearing bush 14 of the respective bending roller axis in the region of the upper coupling 11 .
  • the tool block 9 is thus fixed in such a way that its axis of rotation 15 or its axis of rotation 16 is held immovably relative to the machine table 1, but the tool block 9 can be pivoted about this defined axis.
  • spring bolts 33, 34 are mounted at a distance a from one another, which can each slide up into the corresponding bearing bush 14 in axial contact with the spacer bolts 31 in the region of the lower coupling 10.
  • the depressions 35 in the sliding block 8 limit the stroke of the spring bolts.
  • the spring bolt 33 or 34 is snapped into a bearing bush 14 which is assigned to the axis of rotation 15 or 16 which is not determined by the clutch 28 or 29. It is thus the case that an axis of rotation 15 is coupled to the sliding block 8 by means of a spring bolt 33, while the other axis of rotation 16 is connected in a stationary manner by means of the coupling 29 to the boom 25, and vice versa.
  • a side guide 36 and fixed tension for the tube 18 are arranged directly in front of the tool block 9 on the machine arm 25 in order to avoid deflections of the tube 18 transversely to the feed direction 26 during bending.
  • the axis of rotation 15 is connected to the sliding block 8 by means of the spring bolt 33, while the other axis of rotation 16 is fixed in place on the bracket 25 by means of the coupling 29.
  • the pipe 18 is gripped and fixed by the gripper 22 between the couplings 10, 11 by appropriate actuation of the pipe driver 20.
  • the drive pulley 2 is turned in the direction of rotation 37 for right-hand bending, ie driven clockwise by the drive motor 4.
  • the tool block 9 is now pivoted about the axis of rotation 16 lying eccentrically to the central axis 3 of the drive pulley 2, ie the bending roller 13 does not change its position. It has the function of a template during this bending process.
  • the bending roller 12, the axis of rotation 15 of which is fixed relative to the sliding block 8, is taken along by the sliding block 8 due to the rotational movement of the drive pulley 2 and in this case bends the pipe 18 around the bending roller 13 serving as a template to.
  • An intermediate position in which the tube 18 is bent by 90 ° can be seen in FIG. 6.
  • the drive pulley 2 has already been pivoted here by more than 90 °.
  • the end of the bending process is again shown in FIG. 5, where the position of the bending roller 12, the starting position of which is shown in dashed lines, is shown in solid lines.
  • the tube driver 20 is released by retracting the gripper 22 so that the tube 18 is no longer firmly connected to the tool block 9. Thereafter, the drive pulley 2 is pivoted back into its starting position counter to the direction of rotation 37. Subsequently, the tube 18 is pushed further in the feed direction 26, so that the already bent section 38 reaches the position shown in dashed lines in FIG. 7.
  • the spring pin 34 is now inserted into the bearing bush 14 assigned to the axis of rotation 16 in the region of the lower coupling 10 by spring pressure, by the right coupling 29 in the axis of rotation 16 extending the piston rod immersion pin pulls out the area of the upper coupling 11.
  • the coupling 28 is simultaneously moved into the bearing bush 14 assigned to the axis of rotation 15, so that this and thus the bending roller 12 is fixed relative to the machine table 1.
  • the spring bolt 34 is pressed out of the bearing bush 14 by the spacer bolt 31.
  • the tube driver 20 is actuated again, so that the gripper 22 holds the tube from the contact area 27 of the bending rollers 12, 13.
  • the drive disk 2 is pivoted by means of the drive motor 4 in the direction of rotation 39 for left-turning, that is to say counterclockwise, by 180 °.
  • the sliding block 8 takes along the spring bolt 34 with the tool block 9, which is pivoted about the stationary axis of rotation 15 this time.
  • a bent section 40 of 180 ° is again produced.
  • any number of alternately curved sections 38, 40 can be bent one after the other.
  • the distance L of the bent sections 38, 40 that is to say the length L of a pipe coil section, can be identical over the entire pipe coil, but it must be Not.
  • the lengths L can be selected individually from bending process to bending process.
  • the entire control of the device can be automated very easily via a process control, which is used to control the drive motor 4, the couplings 28, 29, the pipe driver 20 and, if appropriate, a feed device (not shown) for feeding the pipe 18.
  • a process control which is used to control the drive motor 4, the couplings 28, 29, the pipe driver 20 and, if appropriate, a feed device (not shown) for feeding the pipe 18.

Landscapes

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

Claims (8)

  1. Dispositif pour cintrer, alternativement en sens contraires, des parties de tube (38, 40) d'un tube droit (18) pouvant être alimenté en continu, en particulier pour la fabrication de serpentins, avec un plateau de machine (1), avec deux rouleaux de cintrage (12, 13) qui présentent des axes de rotation (15, 16) s'étendant à une distance fixe (a) l'un de l'autre et parallèles entre eux et qui sont pourvus, sur leur pourtour respectif, de gorges (17) recevant le tube (18), adaptées à la section du tube (18), et avec un dispositif de commande de cintrage, dans lequel l'un des rouleaux de cintrage présente un axe de rotation stationnaire par rapport au plateau de machine (1), tandis que l'autre rouleau de cintrage est, par l'intermédiaire du dispositif de commande de cintrage, déplaçable en rotation autour du rouleau de cintrage à axe de rotation stationnaire, pendant le cintrage d'une partie cintrée (38, 40) du tube (18), et dans lequel, alternativement selon le cas, l'un des axes de rotation (15, 16) peut être rendu stationnaire et l'autre axe de rotation (16, 15) déplaçable en rotation, et le dispositif de commande de cintrage peut être commandé alternativement dans des sens opposés,
    caractérisé par le fait que le dispositif de commande de cintrage présente un disque d'entraînement (2) pouvant être commandé en rotation, avec une rainure de guidage (6) dans laquelle est guidé, de manière déplaçable, un coulisseau (8) qui peut être couplé alternativement à l'un des deux axes de rotation (15, 16), et que le couplage de l'axe de rotation (15, 16) selon le cas au coulisseau (8) s'effectue en position de sortie du dispositif, dans laquelle l'axe longitudinal médian (7) de la rainure de guidage (6) est perpendiculaire à la direction d'alimentation du tube (18) et les axes de rotation (15, 16) des rouleaux de cintrage (12, 13) sont disposés de manière symétrique par rapport à l'axe de rotation (3) du disque d'entraînement (2).
  2. Dispositif selon la revendication 1, caractérisé par le fait qu'il est prévu, stationnaires par rapport au plateau de machine (1), des accouplements (28, 29) qui peuvent être couplés alternativement à l'axe de rotation stationnaire (15, 16) respectif.
  3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que les rouleaux de cintrage (12, 13) sont assemblés en un bloc-outil de cintrage de tube (9) qui présente au moins un flasque (10, 11) portant les rouleaux de cintrage (12, 13).
  4. Dispositif selon la revendication 3, caractérisé par le fait que le bloc-outil (9) présente un flasque inférieur (10) et un flasque supérieur (11) qui reçoivent et retiennent les rouleaux de cintrage (12, 13) dans un espace intermédiaire (23) entre eux.
  5. Dispositif selon la revendication 4, caractérisé par le fait que le bloc-outil (9) peut être relié au dispositif de commande de cintrage en un axe de rouleau de cintrage (15 ou 16).
  6. Dispositif selon les revendications 2 et 4, caractérisé par le fait que le bloc-outil (9) peut être amené en prise alternativement avec l'un des accouplements (28, 29).
  7. Dispositif selon la revendication 3, caractérisé par le fait que le bloc-outil (9) porte un dispositif d'entraînement de tube (20).
  8. Dispositif selon la revendication 7, caractérisé par le fait que le dispositif d'entraînement de tube (20) présente une griffe (22) déplaçable axialement, transversalement au tube et parallèlement aux axes de rotation (15, 16).
EP92104760A 1991-02-04 1992-03-19 Dispositif pour cintrer des parties de tubes, en particulier pour la fabrication de terpentins Expired - Lifetime EP0561025B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4103134A DE4103134C2 (de) 1991-02-04 1991-02-04 Einrichtung zum Herstellen von gebogenen Abschnitten an einem Rohr, insbesondere zur Herstellung einer Rohrschlange
US07/855,365 US5373719A (en) 1991-02-04 1992-03-20 Device for generating bent portions in a pipe, particularly for generating a pipe coil

Publications (2)

Publication Number Publication Date
EP0561025A1 EP0561025A1 (fr) 1993-09-22
EP0561025B1 true EP0561025B1 (fr) 1996-05-29

Family

ID=25900716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92104760A Expired - Lifetime EP0561025B1 (fr) 1991-02-04 1992-03-19 Dispositif pour cintrer des parties de tubes, en particulier pour la fabrication de terpentins

Country Status (3)

Country Link
US (1) US5373719A (fr)
EP (1) EP0561025B1 (fr)
DE (1) DE4103134C2 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0182069B1 (ko) * 1995-06-22 1999-04-01 송병준 컷팅블레이드의 절곡시스템
FR2747328B1 (fr) * 1996-04-10 1998-06-19 Robolix Sa Machine a cintrer ou a cambrer un profile, et tete de cintrage pour une telle machine
US7188504B2 (en) * 2000-02-21 2007-03-13 Ateliers De Constructions Mecaniques Latour Et Fils Wire bending device
US20070125143A1 (en) * 2004-07-21 2007-06-07 Mcgushion Kevin D Jr Center shifted roll forming
FR2944984A1 (fr) * 2009-04-29 2010-11-05 Marc Dabrigeon Procede et dispositif de fabrication d'un serpentin
DE102012019183A1 (de) * 2012-09-28 2014-04-03 Ulrich Zimmer Vorrichtung zum Biegen von Rohrmaterial, insbesondere Bremsleitungen, Kraftstoffleitungen od. dgl., mit einem in Richtung der Rohrachse der ungebogenen Rohrleitung fahrbaren Biegeturms, mit einem Biegekopf, der sich um die Rohrachse dreht und ein Biegewerkzeug mit Radiusrollen, welche in einer Rohrachse ein links und rechts Rohrbiegen ermöglicht, ohne dass die Radiusrollen die Rohrachse verlassen und ohne zusätzliches Umrüsten und somit ohne Zeitverlust
CN104889212B (zh) * 2015-06-11 2017-01-18 张家港江苏科技大学产业技术研究院 一种双向弯管用轮模装置
FI20185649L (fi) * 2016-02-01 2018-07-19 Itula Oy Laite ja menetelmä meanderiputken valmistamiseksi
CN113102577A (zh) * 2021-04-01 2021-07-13 白红涛 一种笔记本电脑散热铜管成型装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2454290A (en) * 1946-08-01 1948-11-23 Bundy Tubing Co Apparatus for bending work such as tubing into serpentine coils
US2453868A (en) * 1947-02-20 1948-11-16 Pedrick Tool & Machine Company Apparatus for automatically bending work such as tubing into serpentine coils
FR1081265A (fr) * 1952-05-23 1954-12-17 Babcock & Wilcox France Dispositif pour le pliage de tubes rectilignes en un serpentin tubulaire consistant en une série d'ondulations alternées
US3742749A (en) * 1971-02-03 1973-07-03 J Markin Tube-coiling machine
FR2125193A1 (en) * 1971-02-18 1972-09-29 Gol Sp Kon Coiled tube mfr - by a high-performance machine employing two drive shafts
US3713317A (en) * 1971-08-25 1973-01-30 Schenck Corp Bending machine
DE2215490A1 (de) * 1972-03-29 1973-10-04 Peddinghaus Carl Ullrich Dr Biegemaschine fuer insbesondere betonstahlstaebe
DE2537382A1 (de) * 1975-08-22 1977-03-03 Babcock Ag Vorrichtung zum biegen von rohren
AT378135B (de) * 1983-05-18 1985-06-25 Evg Entwicklung Verwert Ges Biegemaschine fuer draht- oder bandfoermiges material

Also Published As

Publication number Publication date
US5373719A (en) 1994-12-20
DE4103134C2 (de) 2000-12-07
EP0561025A1 (fr) 1993-09-22
DE4103134A1 (de) 1992-08-06

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