EP0306672B1 - Verfahren und Vorrichtung zum wendelförmigen Aufwickeln von Metallband auf Rohre - Google Patents

Verfahren und Vorrichtung zum wendelförmigen Aufwickeln von Metallband auf Rohre Download PDF

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Publication number
EP0306672B1
EP0306672B1 EP88111656A EP88111656A EP0306672B1 EP 0306672 B1 EP0306672 B1 EP 0306672B1 EP 88111656 A EP88111656 A EP 88111656A EP 88111656 A EP88111656 A EP 88111656A EP 0306672 B1 EP0306672 B1 EP 0306672B1
Authority
EP
European Patent Office
Prior art keywords
tube
strip
eccentric
winding
pressure
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
EP88111656A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0306672A3 (en
EP0306672A2 (de
Inventor
Alfred Joekel
Peter Denner
Wolfgang Herrmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balcke Duerr AG
Original Assignee
Balcke Duerr AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Balcke Duerr AG filed Critical Balcke Duerr AG
Priority to AT88111656T priority Critical patent/ATE68728T1/de
Publication of EP0306672A2 publication Critical patent/EP0306672A2/de
Publication of EP0306672A3 publication Critical patent/EP0306672A3/de
Application granted granted Critical
Publication of EP0306672B1 publication Critical patent/EP0306672B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
    • B21C37/26—Making finned or ribbed tubes by fixing strip or like material to tubes helically-ribbed tubes

Definitions

  • the invention relates to a method and a device for helically winding metal strip, preferably made of aluminum or the like, onto pipes, preferably with a pipe cross-section deviating from the circular shape, in particular oval pipes made of steel, the pipe being rotated and the band being cold deformed to the respective Pipe curvature is adjusted by pulling the upright band under tension with increasing deformation from the foot to the head edge on the pipe and immediately before application to the pipe is subjected to an adaptation of the linearly tapering band to the respective pipe curvature supporting rolling process.
  • a method for helical winding of a band provided with an edge bent at right angles on the foot edge onto pipes with an oval cross-section is known, the pipe being rotated and the band being cold deformed to the respective radius of the pipe, by pulling the band smoothly onto the pipe under tension and under increasing deformation from the foot to the head edge in accordance with the respective pipe radius in the plane of the band and thereby holding it vertically.
  • the edge located at the foot edge is used in the known method of the tape is bent over an angle of 90 ° and, after being pulled onto the tube, pressed back into an approximately rectangular position.
  • the vertical leg of the band can be additionally stretched directly in front of the point of impact on the tube by pressure forces on both sides in order to favor the adaptation of the band to the different radii of the oval tube and to increase the winding speed.
  • at least one pressure roller is arranged on the band guide feeding the band to the tube, which is freely rotatable and with its axis of rotation parallel to the band plane, but at an acute angle to the direction of movement of the tape is arranged with the front facing the angled edge of the tape.
  • a device for helically winding pipes of circular cross-section with tape is also known, in which the tape is deformed immediately before being applied to the pipe by a rolling process, which is driven by a driven rolling element and a frictionally moving roller plate is effected.
  • the roller plate can be adjusted with respect to the tube axis and can be positioned against the roller element.
  • the rolling element is designed as a rolling ring concentrically surrounding the tube with a rolling surface extending at right angles to the tube axis, which is driven synchronously with the tube by the rotary drive of the tube.
  • This device has also proven itself in practice. However, it is not suitable for winding tape onto pipes with a cross-sectional shape that differs from the circular shape.
  • DE-PS 33 20 235 finally discloses a method and a device for helically winding upright tape on pipes with a circular, deviating, preferably oval or elliptical cross-section, in which the tape is directly subjected to a rolling process when applied to the pipe becomes; the strip is rolled out at least in its outer edge region during its periodically recurring application to tube regions with a small radius of curvature, the strength of the rolling process increasing continuously with decreasing radius of curvature of the tube until the smallest radius of curvature is reached and decreasing accordingly with increasing radius of curvature of the tube.
  • the roller used for this purpose which acts on the surface of the strip running perpendicular to the pipe surface, is controlled by a pressure tappet, so that the strip that is pulled onto the pipe is subjected to higher pressure forces of the roll than when it is periodically applied to pipe areas with a small radius of curvature its application to pipe areas with a larger radius of curvature.
  • the band to be wound onto the tube was rolled out in its head region to support the stretch when it was adapted to the greater arc length in relation to the foot edge at the head edge by forces acting perpendicular to the band surface.
  • This roll-out which lengthened the strip in the area of the head edge, served to avoid cracks in the head edge and to keep the flow of the strip material within the yield point.
  • the invention has for its object to provide a method and an apparatus of the type described above, with which crack-sensitive metal strips, in particular those made of aluminum or the like, can be wound onto pipes at high speed, the strip having a cross section of I or Can be L-shaped.
  • the solution to this problem by the method according to the invention is characterized in that a centripetal compressive force of a size is applied to the head region of the band running onto the tube, in which the material of the band is displaced in the direction of the foot edge and for the stretching of the band in Head area is also available.
  • the invention deviates from previous practice in which the strip was rolled out on its upright surface to the pipe for the purpose of better and faster adaptation to the curvature of the pipe surface.
  • the invention applies a centripetal compressive force to the head edge of the band.
  • this reduces the outside diameter of the band, which reduces the risk of cracking as a result of the reduction in the section modulus.
  • the band material displaced inward towards the foot edge by the centripetal compressive force is available as additional material for the stretching of the band in the head region, which also prevents the yield strength from being exceeded.
  • the compressive forces exerted in the centripetal direction cause material compression in the head region of the band, which leads to a thickening of the outer edge zone and thus to an increase in stability.
  • the proposal according to the invention results in a rolling, pressure and stretching of the strip running onto the tube in the head region, which results in a considerable increase in performance also enables crack-sensitive tapes when winding.
  • the pressure point of the centripetal pressure force acting on the head edge of the band of the contact point of the foot edge of the band on the pipe surface can advance by a predetermined angle. This ensures, in particular, a tight fit of the base edge of the band on the pipe surface.
  • the method according to the invention is suitable both for tubes with a circular cross section and, in particular, for tubes with a tube cross section that deviates from the circular shape.
  • the pressure point of the centripetal compressive force can, according to a further feature of the invention, execute an oscillating forward movement which is matched to the cross-sectional shape, in that the pressure point counteracts the pipe surface from a first end position with a decreasing radius of curvature the run-up direction of the belt is shifted to a second end position and then moved back to the first end position with increasing radius of curvature.
  • the centripetal compressive force exerted on the head region of the band is present longer.
  • a certain compression effect is achieved due to the shifting of the pressure point counter to the running direction of the band, which after exceeding the smallest radius of curvature due to the backward movement of the pressure point results in a tightening of that part of the band that is on the pipe surface with the largest radius of curvature is raised.
  • the oscillating forward movement of the pressure point according to the invention has the result that the strong tensile forces of the band are greatly reduced when applied to the tube in the small radii of curvature, as a result of which the application of the band runs more smoothly, so that softer band material, such as aluminum, also has a high degree of smoothness Speed and without the risk of cracks can be processed.
  • the exposure of the pipes to the small bending radii lying on the largest diameter is reduced, which makes it possible to use pipes with thinner walls and pipes made of softer material, for example pipes made of aluminum.
  • the device used to carry out the method according to the invention comprises at least one winding arm which is movable relative to the axis of rotation of the tube in accordance with the respective tube radius, the winding head of which, in addition to guide elements for the strip fed upright, has a roller and is constantly pressed against the surface of the rotating tube.
  • the rolling roller which is loaded by a compressive force acting in the direction of the pipe surface, is designed as a pressure roller which is provided with a groove which detects the head region of the strip and displaces material in the direction of the foot edge and about an axis running parallel to the axis of rotation of the tube is freely rotatable in the winding head.
  • the centripetal pressure force can be easily applied to the head edge of the band running onto the pipe, since the band is additionally guided through the groove in the pressure roll while it runs onto the pipe surface.
  • the cross-sectional configuration of the groove can also have an influence on the material displacement in the head region of the belt.
  • the flanks of the groove in the pressure roller exert a stretching force on the side surfaces of the strip in the head area, which supports the combined rolling, pressure and stretching action.
  • the pressure roller is mounted in a slide which is displaceably guided in the winding head perpendicular to the tube surface and is loaded by the compressive force acting in the direction of the tube surface.
  • the level of this pressure force is adjustable. It is also possible to change the pressure force as a function of the respective position of the tube, ie to apply it in a pulsating manner.
  • the slide is preferably loaded by the piston of a pressure medium cylinder.
  • the winding arm can be designed as a two-armed lever and connected at the rear end to a pressure medium cylinder, which generates the pressing force of the winding head arranged at the other end of the winding arm against the pipe surface.
  • a special development according to the invention results if the winding arm is mounted on an eccentric, the eccentricity of which can be adjusted according to the difference between the smallest and largest radius of the tube cross section and which is driven in synchronism with the rotary drive of the tube at a speed which corresponds to the speed of the pipe multiplied by the number of eccentricity of the pipe cross-section.
  • the eccentric can be formed by an eccentric bolt which supports the winding arm and is arranged on an eccentric slide which is guided in an adjustable manner in a guide groove of a rotatingly driven eccentric disk by means of an adjusting spindle relative to the axis of rotation of the eccentric disk.
  • the eccentric disc is provided with a clamping bolt which can be clamped in an eccentric drive gear via a tapered clamping bush by means of a clamping nut screwed onto the clamping bolt.
  • the invention proposes to provide two rotary drives for the tube to be wound between which the winding arm or arms are arranged, one rotary drive acting directly on the tube to be wound and the other rotary drive on the tube wound with tape.
  • This use of two rotary drives for the tube counteracts the torsional stress on the tube in such a way that, despite the heavy load, in particular tubes with a cross-section deviating from a circular shape, thin-walled tubes can be processed as well as tubes made of softer material, for example aluminum.
  • each rotary drive consists of a drive disk provided with teeth and rotatably mounted on a support plate, which is provided with a recess corresponding to the outer dimension of the unwound tube or the tube wound with tape and via an idler gear from a drive or intermediate shaft is driven.
  • an alternating gear which in turn is the eccentric drive gear, engages in the toothing of the drive disk in the toothing of the drive disk drives and can be easily replaced to achieve the desired translation.
  • this tube R is an oval tube made of steel.
  • this tube R is wound with double thread with tape B, as can be seen in particular from FIG. 2.
  • this band B has a flat rectangular cross section, which is also referred to as an I profile.
  • Band B is made of aluminum, for example.
  • each winding arm 4 is designed as a two-armed lever which is connected at its rear end to a pressure medium cylinder 5.
  • this pressure medium cylinder 5 is arranged at the front end of the winding arm 4 winding head 6 with a predetermined pressing force against the surface of the rotating tube R pressed, the winding arms 4 corresponding to the different radii of the tube R with its cross-section deviating from a circular shape perform a constant pivoting movement.
  • FIGS. 2 and 3 also show the tape B, which has been omitted in FIG. 1 for the sake of clarity.
  • This band B is fed in opposite directions and at opposite points to the tube R, which is rotated continuously by the rotary drive 3 in the support plate 2.
  • two guide rollers 7 and a support roller 8 are arranged on the inlet side of each winding head 6. While the support roller 8 determines the infeed height of the belt B, the guide rollers 7, whose axis of rotation is inclined to create a kind of toe-in, serve to guide the incoming belt B laterally.
  • the strip B arrives in a gap which is formed between an exchangeable insert 9a of a contact runner 9 of the winding head 6 and a so-called strip inlet knife 10 which is arranged on the winding head 6 in an adjustable manner.
  • a pitch wedge 13 is arranged between the tilting knife 12 and the winding arm 4, which wedge is designed and replaced in accordance with the pitch and pitch.
  • spacer plates not designated in detail, which are designed according to the thickness of the band B and ensure that the band ribs wound on the tube R can run freely and do not jam.
  • a slider 14 is arranged in the winding head 6 and is guided in the system runner 9 so as to be displaceable in the direction of the axis of rotation A of the tube R.
  • the band inlet knife 10, the center knife 11, the tilting knife 12 and the gradient wedge 13 are adjustably fastened to this contact skid 9 by means of two clamping bolts 15, which in the exemplary embodiment are each provided with a ring nut 15a.
  • a grooved pressure roller 16 is freely rotatably mounted on a bearing pin 17 on the slide 14, so that the pressure roller 16 rotates about an axis C which runs parallel to the axis of rotation A of the tube R.
  • the pressure roller 16 lies with its groove on the top edge K of the strip B, the base edge F of which, according to FIG. 4, lies without a gap on the tube surface after the strip B has been wound onto the tube R.
  • This pressure medium cylinder 19 is preferably a short stroke cylinder which is pressurized with compressed air and whose compressed air connection can be seen in FIG. 3.
  • FIG. 4 shows that the outer diameter of the strip B is reduced by the pressure roller 16 immediately when it hits the tube R.
  • the band material displaced inwards onto the foot edge F. is available on the one hand as an additional material for the stretching of the band B in the head area, so that an exceeding of the yield point when winding the band B onto the tube R is counteracted.
  • the section modulus of the belt B and thus the risk of cracking are reduced.
  • the compressive forces exerted in the centripetal direction cause material compression in the head region of the band B, which leads to a thickening of the outer edge zone and thus to an increase in stability.
  • the dimension and the shape of the thickening at the top edge K of the wound tape B depends, among other things, on the shape of the groove formed in the pressure roller 16.
  • the pressure roller 16 thus brings about a combined rolling, pressure and stretching application of the strip B running onto the tube R, as can be seen in particular when looking at FIG. 4.
  • FIG. 4 further shows that the pressure point D lying vertically below the axis C of the pressure roller 16 at the head edge K of the strip B leads the tube R by an angle 20 relative to the contact point E of the base edge F of the strip B, which is on the order of 3 to 10 °.
  • the pressure point D of the centripetal pressure force exerted by the pressure roller 16 can execute an oscillating forward movement which is matched to the cross-sectional shape of the tube R, by the pressure point D decreasing the radius of curvature of the tube surface shifted from a first end position against the running direction of the belt B to a second end position and then moved back to the first end position with increasing radius of curvature.
  • centripetal pressure force exerted on the head region of the band B is not only longer, but it is also achieved that, on the one hand, an additional compression effect on the band and, on the other hand, an additional tightening of the band B are achieved when this is applied to the area with the larger one Radius of curvature of the tube R is drawn.
  • each winding arm 4 is mounted on an eccentric 21 (see FIG. 1).
  • the eccentricity of this eccentric 21 is set according to the difference between the smallest and largest radius of the pipe cross section.
  • the eccentric 21 is driven in synchronism with the rotary drive 3 of the pipe R, namely at a speed which is multiplied by the speed of the pipe R corresponds to the number of eccentricities of the pipe cross section.
  • the eccentrics 21 are accordingly driven at twice the speed of the tube R and in the same direction of rotation due to the oval cross section of the tube R.
  • the drive of the eccentric 21 is derived in a suitable manner from the rotary drive 3 of the tube R.
  • FIG. 5 shows that the device described above is equipped with two rotary drives for the tube R.
  • two support plates 2 are arranged on the base plate 1 at a distance and parallel to each other.
  • a drive disk 22 is rotatably mounted, which is provided with a recess 22a which corresponds to the external dimensions of the unwound tube R.
  • the drive takes place via an intermediate wheel 23 engaging in the toothing of the drive disk 22 and a further intermediate drive wheel 24 from a drive gear 25 which is driven by a drive motor (not shown) with the interposition of a clutch 26 shown in FIG.
  • the second rotary drive for the tube R which is arranged on the outlet side of the tube R and is shown in a view in FIG. 7, is also driven via an intermediate shaft 27 which runs between the two support plates 2 according to FIG. 7 again shows an intermediate drive wheel 28 arranged on the intermediate shaft 27, which drives a further drive disk 30 via an intermediate wheel 29. 7 has a recess 30a which corresponds to the dimensions of the tube R wound with tape B.
  • the second drive thus acts on the tube R via the wound tape B.
  • FIGS. 8 and 9 also shows that the drive of the eccentric 21 is also derived from the second rotary drive for the tube R, on each of which a winding arm 4 is arranged.
  • the design of these eccentrics 21 is shown using an exemplary embodiment in FIGS. 8 and 9.
  • the eccentric 21 comprises an eccentric pin 31 on which the winding arm 4 is rotatably supported by means of two ball bearings in the exemplary embodiment shown.
  • This eccentric bolt 31 is arranged on an eccentric slide 32 which is guided in an adjustable manner in a guide groove 33a of an eccentric disk 33 by means of an adjusting spindle 34.
  • the eccentric slide 32 can be removed by means of of the adjusting spindle 34 can be adjusted relative to the central axis of rotation of the eccentric disk 33 in order to set the eccentricity desired for the respective oscillating movement.
  • the position set in each case is secured by tightening the clamping nut 35.
  • the eccentric disc 33 is in turn provided with a clamping bolt 33b, which is mounted in a central bore of an eccentric drive gear 36.
  • This eccentric drive gear 36 is in turn rotatably supported by means of two ball bearings in a bearing flange 37 which is fastened to the support plate 3.
  • a cone clamping bush 38 is used, which is on the clamping bolt 33b of the eccentric disk 33 is arranged and engages in a corresponding conical recess of the eccentric drive gear 36.
  • the eccentric disk 33 can be rotated relative to the eccentric drive gear 36.
  • the clamping nut 399 is tightened so that the eccentric disc 33 is driven by the eccentric drive gear 36 with the desired lead angle 20 to achieve the oscillating lead movement. 7 shows that this drive from the drive pulley 30 takes place via a change wheel 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Wire Processing (AREA)
  • Metal Extraction Processes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Winding Of Webs (AREA)
  • Moulding By Coating Moulds (AREA)
  • Basic Packing Technique (AREA)
  • Making Paper Articles (AREA)
  • Manufacturing Of Electric Cables (AREA)
EP88111656A 1987-09-05 1988-07-20 Verfahren und Vorrichtung zum wendelförmigen Aufwickeln von Metallband auf Rohre Expired - Lifetime EP0306672B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88111656T ATE68728T1 (de) 1987-09-05 1988-07-20 Verfahren und vorrichtung zum wendelfoermigen aufwickeln von metallband auf rohre.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3729859 1987-09-05
DE3729859A DE3729859C1 (de) 1987-09-05 1987-09-05 Verfahren und Vorrichtung zum wendelfoermigen Aufwickeln von Metallband auf Rohre

Publications (3)

Publication Number Publication Date
EP0306672A2 EP0306672A2 (de) 1989-03-15
EP0306672A3 EP0306672A3 (en) 1989-11-08
EP0306672B1 true EP0306672B1 (de) 1991-10-23

Family

ID=6335371

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88111656A Expired - Lifetime EP0306672B1 (de) 1987-09-05 1988-07-20 Verfahren und Vorrichtung zum wendelförmigen Aufwickeln von Metallband auf Rohre

Country Status (8)

Country Link
EP (1) EP0306672B1 (enrdf_load_stackoverflow)
AT (1) ATE68728T1 (enrdf_load_stackoverflow)
DD (1) DD294437A5 (enrdf_load_stackoverflow)
DE (2) DE3729859C1 (enrdf_load_stackoverflow)
ES (1) ES2026973T3 (enrdf_load_stackoverflow)
GR (1) GR3003609T3 (enrdf_load_stackoverflow)
YU (1) YU46799B (enrdf_load_stackoverflow)
ZA (1) ZA886594B (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108262363B (zh) * 2018-04-26 2019-12-24 重庆西重特种铝业有限公司 一种椭锥管拉拔机
CN112059501B (zh) * 2020-08-28 2025-06-03 中车贵阳车辆有限公司 一种测重阀吊座浮动定位装置
CN116175187B (zh) * 2023-02-15 2023-09-15 南通思瑞机器制造有限公司 一种智能横剪线尾料利用剪切机构

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE556390C (de) * 1930-10-31 1932-08-10 Boesdorfer Maschinenfabrik & E Vorrichtung zur Herstellung eines Rippenrohres
DE2313436C3 (de) * 1973-03-17 1975-11-13 Balcke-Duerr Ag, 4030 Ratingen Verfahren zum wendeiförmigen Aufwickeln von Band auf Rohre mit ovalem Querschnitt sowie Vorrichtung zur Ausübung des Verfahrens
DE3131473C2 (de) * 1981-08-08 1985-06-27 Balcke-Dürr AG, 4030 Ratingen Vorrichtung zum wendelförmigen Bewickeln von Rohren kreisförmigen Querschnitts mit glattem (ungewelltem) Band
DE3320235C1 (de) * 1983-06-03 1984-11-22 Balcke-Dürr AG, 4030 Ratingen Verfahren und Vorrichtung zum wendelförmigen Aufwickeln von Band auf Rohre

Also Published As

Publication number Publication date
GR3003609T3 (enrdf_load_stackoverflow) 1993-03-16
DD294437A5 (de) 1991-10-02
DE3865788D1 (de) 1991-11-28
EP0306672A3 (en) 1989-11-08
ZA886594B (en) 1989-04-26
ES2026973T3 (es) 1992-05-16
ATE68728T1 (de) 1991-11-15
YU152688A (en) 1990-12-31
DE3729859C1 (de) 1988-08-25
EP0306672A2 (de) 1989-03-15
YU46799B (sh) 1994-06-10

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