EP0201729A2 - Dispositif pour la fabrication des tubes enroulés ainsi que tube enroulé - Google Patents

Dispositif pour la fabrication des tubes enroulés ainsi que tube enroulé Download PDF

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Publication number
EP0201729A2
EP0201729A2 EP86104906A EP86104906A EP0201729A2 EP 0201729 A2 EP0201729 A2 EP 0201729A2 EP 86104906 A EP86104906 A EP 86104906A EP 86104906 A EP86104906 A EP 86104906A EP 0201729 A2 EP0201729 A2 EP 0201729A2
Authority
EP
European Patent Office
Prior art keywords
rollers
roller
tube
strip
roller set
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.)
Withdrawn
Application number
EP86104906A
Other languages
German (de)
English (en)
Other versions
EP0201729A3 (fr
Inventor
Horst Hano
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19858510780 external-priority patent/DE8510780U1/de
Priority claimed from DE19858510781 external-priority patent/DE8510781U1/de
Application filed by Individual filed Critical Individual
Publication of EP0201729A2 publication Critical patent/EP0201729A2/fr
Publication of EP0201729A3 publication Critical patent/EP0201729A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0245—Manufacturing or assembly of air ducts; Methods therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes 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
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31C3/00—Making tubes or pipes by feeding obliquely to the winding mandrel centre line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise

Definitions

  • the invention relates to a device for producing a winding tube from a strip with a continuous or interrupted connection of adjacent windings, with a roller set consisting of a driven lower roller, a driven upper roller and a freely rotatable pressure roller, with a pair of rollers in front for the feed of the strip , with a guide for a section of the most recent turn and with a receptacle for aligning the finished tube with respect to the guide and with respect to the roller set, the roller set being pivotable about an axis which runs parallel to the central axis of the still stretched strip; in addition, the invention relates to a coiled tube which consists of a strip of metal or plastic wound into a tubular jacket, the adjacent windings of which are fastened to one another by means of welding with the aid of a fold or by knotting overlapping areas in a corrugated strip.
  • Coiled tubes have been known for a long time. They are used in particular for guiding conditioned air in buildings, since they are relatively cheap to manufacture, sufficiently air-tight and also light-weight, so that they can be installed in suspended ceilings, for example, without additional measures. Furthermore, there are other applications, such as the outer formwork of cylindrical concrete columns, which is increasingly being made from a winding tube with a seam connection.
  • the pipes mentioned are manufactured on relatively simple machines and cut to length as required, the transport length and general handling primarily determining the maximum length.
  • the manufacturing devices also allow a theoretically unlimited pipe length.
  • the reductions or expansions from one nominal size to another, which are required in ventilation technology, for example, are produced separately on specially designed devices, namely by winding up a flat, cut outer surface to form a cone section, which is then closed at its longitudinal seam or at its longitudinal seams. At the ends of the cone section shaped in this way, cylindrical connecting pieces are attached in order to enable easy coupling to the air lines, which are otherwise made of a winding tube.
  • the reductions and expansions require a disproportionate effort, which is clearly noticeable in costs per linear meter.
  • the constrictions and transitions are often unnecessarily rugged, which is detrimental to low-loss air flow. However, this property has so far been accepted.
  • the invention proposes that the swivel angle from the central position is approximately 30 ° in one direction and approximately 30 ° in the other direction, that the guide consists of spherical rollers, and that each roller is guided in an approximately radially movable manner and is detectable or can be moved synchronously with the feed speed depending on the swivel angle.
  • the invention gives up the practice practiced hitherto of a device which has been set once and is matched to a specific diameter and allows variations during the run, in particular with regard to the diameter, which are caused by an inclined roller set.
  • the interdependent control of the inclination of the roller set and the roller guides with regard to the diameter can take place via cam disks, but it is more advantageous to use a microprocessor, which uses servomotors and a corresponding query of the actual position or via stepper motors, which contain this information from the start individual movements.
  • a roller set which can be pivoted by a few angular degrees has already become known in the prior art, the pivoting of which is changed in accordance with the measuring control to determine the continuously produced diameter.
  • a corresponding circuit ensures a correction of the swivel angle, for example downwards, if the diameter has become too large.
  • the continuously wound diameter then decreases in the smallest amounts per turn until the lower tolerance limit is reached.
  • the roller set oscillates between the tolerance limits. The result is a tube that goes in has a cylindrical shape on the outside, but when measured more precisely it turns out to be a corrugated tube, but with a very long wavelength.
  • the invention expressly does not adopt this principle for the production of a cylindrical tube, but instead makes use of the possibility of producing conical tube sections by extreme pivoting of the roller set if they are needed.
  • the device according to the invention also makes it possible to produce cylindrical tubes, in which case the device is operated in accordance with a conventional device, that is to say the setting of the diameter is brought about primarily by the guide and by the position of the pressure roller.
  • each roller of the guide is designed as a pair of double rollers touching the tube outside and inside, the contour of each roller preferably being spherical.
  • This simultaneous adjustment of all rollers or double rollers is preferably effected with the aid of actuating or stepping motors which are controlled by an electrical circuit.
  • the increasingly effective pivoting position of the roller set also requires the guide to open, that is to say an adjustment of the rollers to a larger diameter, the diameter relationships being reproduced in the electrical circuit as a function of the pivoting angle of the roller set and the feed rate. Since these parameters are known, there is a constant comparison of the target values and the actual values for the position of the individual rollers, which in the event of deviations leads to an immediate correction in the direction of the target position.
  • the swiveling of the roller set is gradually reduced again, for which purpose one turn or less (the diameter is now larger) is required.
  • the opening of the guide is stopped by moving the rollers apart, since after the set of rollers has been pivoted back into the starting position, a cylindrical tube section is created again, which requires immobile, continuous guidance.
  • the transition piece is finished and is cut off from the last turn.
  • a similar process can also take place immediately in reverse order, so that at the end there are two reducers which only have to be separated from one another in the middle.
  • one of the pairs of rollers is provided with unequal rollers for bending the strip.
  • the change in distance is electrically adjustable and controllable, that is to say is effected with the aid of an actuating or stepping motor.
  • the electrical circuit in the form of the microprocessor already described above is also expanded in this development by a switching unit.
  • the inside diameter of the push-in sleeve can be selected according to the silhouette of the joint fold or according to the outside diameter of the actual pipe wall.
  • the connecting tube can be inserted into the plug-in sleeve without t interference
  • an additional rotation in the manner of a screwing-in movement is required.
  • the shapes described are not only limited to thin-walled pipes for ventilation purposes, but an application is also possible in the case of wound and continuously welded steel pipes, the device then being designed to be correspondingly stronger.
  • conical tube made with a device according to the invention.
  • formwork bodies can be produced, for example, which are cylindrical over a certain length and then spread conically. It is suitable, for example, for support beams on bridges and the like.
  • the conical section can be flattened into a shape that resembles a flat nozzle and has an oval shape in cross section.
  • the latter tube shape can also be used successfully in air conditioning technology, for example, since the conical tube section acts as a diffuser and greatly reduces the exit velocity of the air flowing out in the cylindrical section.
  • FIG. 1 schematically shows a view of a device according to the invention for the production of winding tubes; the view is directed towards a plate 1, from which the winding tube produced continuously emerges towards the viewer. Inessential device parts like a front Directional stands or the like are not shown, since these things make no contribution to the representation of the actual invention.
  • the plate 1 In the lower area, approximately in the middle, the plate 1 is provided with a cutout 2, within which a roller set 3 is pivotably mounted. This roller set 3 is shown in its horizontal starting position in FIG.
  • the roller set 3 consists of a driven lower roller 4 and a driven upper roller 5 (FIG. 4) as well as a pressure roller 6 on the side of the roller set 3, from which a sheet metal strip 7 runs into the nip.
  • a pair of feed rollers 18 is also provided at a distance from the roller set 3, which pair is arranged in the position shown or clearly outside the plate 1, depending on the design of the roller set 3, for example 1 m to 2 m in front of the roller set 3rd
  • a certain type of sheet metal strip 7 can be processed with the aid of the illustrated device according to the invention. It is an essentially flat sheet metal strip with bevels on the edges, which are later compressed into a closed fold. A corresponding pair of rollers 4 and 5 is shown in FIG. 4. A groove for receiving and for completely closing a corresponding fold can be clearly seen in the driven lower roller 4.
  • plastic strips can also be processed, which are joined together, for example, continuously or interrupted with the aid of ultrasound or using a roller seam welding process to form a winding tube. strips of a corrugated aluminum can also be wound in an overlapping manner, the overlapping regions being pressed at regular intervals, as a result of which there is sufficient cohesion. Adhesive bonding, laser beam welding or clamping of adjacent turns to one another with almost any flat starting material as a strip is of course also possible.
  • the plate 1 is provided with radially extending guides 10, in each of which sliding blocks 11 (FIGS. 2 and 3) are displaceably guided.
  • the sliding blocks 11 carry rollers 13 and 14, which leave a guide gap between them approximately in the processed material thickness of the sheet metal strip, taking into account a certain tolerance and a certain play.
  • the rollers 13 and 14 serve to guide the metal strip 7 in the most recent turn.
  • the sliding blocks 11 form the end of a rack (not shown) or are fastened to a rack, in which the pinion of a stepping motor (also not shown, behind the plate 1) engages. With the help of these servomotors, each pair of rollers assigned to a sliding block 11 can be individually adjusted from the rollers 13 and 14.
  • the pivoted roller set 3 which is shown schematically in FIG.
  • the two rollers 4 and 5 are mounted in a swivel head 23 and connected via gears 21 and 22 to gears 26 and 25, which ensure that the rollers 4 and 5 roll on one another without slipping.
  • gears 21 and 22 On the shaft 21 in the extension of the gear 26, a pulley 27 for a toothed belt is arranged, with the help of which the rotation of the two rollers 4 and 5 is ensured.
  • an electric or hydraulic motor held on the swivel head 23 can be present at this point, which works synchronously with the drive for the feed roller pair 18 (FIG. 1)
  • the swivel head 23 is pivotally mounted in the plate 1 with the aid of lateral journal bearings 24, an adjusting device 28 taking over the setting and the feedback of the current setting.
  • FIG. 4 shows the actuating device as a piston-cylinder unit 28, which, however, is generally only particularly suitable if only a certain swivel angle and then the starting position shown are approached again.
  • a screw-nut drive is recommended here, for example, which is set in rotation by an actuating or stepping motor.
  • the stepper motor has the advantage that the number of controls can be counted in an electronic memory and thus always one Control over the position of the swivel head 23 is present in the electrical circuit, which has already been explained in detail in the introduction to the description.
  • the sheet metal strip 7 is first inserted into the roll gap in a conventional manner and the pressure roller 6 is adjusted so that the diameter shown in FIG. 1 is wound .
  • the swivel head 23 is pivoted clockwise by 10 ° with the aid of the adjusting device 28, for example in FIG. 4. This leads to an upward movement of the pair of rollers 4 and 5, which must be absorbed by a corresponding displacement of all pairs of rollers 13 and 14.
  • Such a correction is not necessary if the pivot axis of the swivel head 23 is positioned, for example with the aid of links, that it lies in the region of the line of contact between the two driven rollers 4 and 5.
  • the pivoting movement of the swivel head 23 also results in an increase in diameter, which is automatically taken into account by the electrical circuit by withdrawing the pairs of rollers 13 and 14.
  • a conical tube is formed in front of the plate 1, the opening of which facing the plate 1 is constantly increasing.
  • the pivoting of the swivel head 23 is eliminated again, which stops the tube from growing.
  • the different opening angles of the pipe cones are easily mastered by the spherical rollers 13 and 14, since there is essentially only point contact. It is therefore not necessary to change the distance between two adjacent rollers 13 and 14 in order to guide cylindrical or conical sections of a winding tube. With particularly small diameters, fewer pairs of rollers 13 and 14 are sufficient for guidance than shown; in this case, for example, every second pair of rollers is moved back to the starting position, where they are temporarily not involved in any leadership.
  • each pair of rollers is in turn located on a sliding block 31 on which a shaft 32 is fixedly attached, at the free end of which a freely rotatable roller 33 with a spherical contour is mounted.
  • another roller 36 At a distance from it is another roller 36, the outer contour of which is designed in a J-shape with a shoulder 40.
  • This roller 36 is also held by a shaft 35 which, however, is separately guided and movable in a sliding block 34 movable in a guide 37.
  • the guide 37 is located within the sliding block 31, so that the J-roller 36 can be moved separately with respect to the spherical roller 33.
  • the sliding block 34 is provided with a toothing in which a pinion engages.
  • the pinion is connected to an actuator (not shown in each case) which rides on the sliding block 31.
  • the shaft 35 of the J-roller 36 protrudes through an opening 39 in the sliding block 31, so that there is free mobility between the two rollers 33 and 36.
  • the pair of rollers shown in FIG. 5 serves to introduce a cylindrical section after a conical section
  • the pair of rollers 33 'and 36' shown in FIG. 6 serves to introduce a conical section with a decreasing opening towards a cylindrical section.
  • the effect of the folding of these two pairs of rollers on a sheet metal strip 7 is indicated by a dash-dotted line. For example, if a cone section, which is just being created on the device with a widening opening, is to be relatively - abruptly transition into a cylindrical section at a certain diameter, then the roller 36 is moved rapidly from the outside to the spherical roller 33, so that the sketched Bending of the metal strip 7 results.
  • the swivel head 23 When the bend enters the gap between the two rollers 4 and 5, the swivel head 23 is swiveled back appropriately and quickly from a swivel position into the horizontal starting position, so that the folded area can pass through the nip without harmful forces. As soon as one turn of the pair of rollers 33 and 36 has been folded, the distance between the J-roller 36 and the spherical roller 33 is suddenly increased again. so that the edging stops. Subsequently, a cylindrical section is created, which has a relatively rugged transition compared to the conical previous section.
  • the rollers 13 and 14 are not spherical, but wedge-shaped, the wedge contour being immersed in a longitudinal groove of the metal strip 7.
  • the grooves within the sheet metal strip 7 run away from the plate 1 at a relatively large pitch angle. This fact must be taken into account, otherwise the flanks between which the wedge contour rolls will be damaged.
  • the sliding blocks 11 are provided with further threaded holes 12 ', apart from threaded holes 12, the central axis of which coincides with the normal, the central axis of which is pivoted transversely to the longitudinal direction of the guide.
  • the compensation of the possibly moving upwards and downwards can either be omitted, as long as only tapered sections with small opening angles are produced, or can be compensated in the vertical direction by actuation of the slide, which is also effected by the electrically controlled circuit.
  • a receptacle held in an upward tendency for example with the aid of springs, is sufficient to absorb and compensate for these center fluctuations in the tube.
  • a winding tube according to the invention can also be used as a silencer.
  • the jacket forming the tube has irregularly changing diameters along its longitudinal axis. So there are cylindrical and conical sections or or only conical sections strung together, whereby composite pipe sections or sections continuously produced with changing diameters can be used.
  • the ends of the jacket are preferably provided with cylindrical connecting pieces, with the aid of which plug connections and the like can then be produced.
  • the silencer it is not absolutely necessary for the silencer to be made in one piece for a specific damping task. Depending on the space available in an air conditioning system, bends, branches or the like may be present between two sections of a total damper, it is only important that the desired sound insulation is achieved overall. Regardless of the one-piece or multi-piece design of the damper, the Ma ntel be provided with openings, in which case a preferably cylindrical protective tube is provided on the outside to cover the jacket.
  • a muffler of this type is produced from winding tube in a particularly cost-effective manner.
  • Other techniques can also be used to form tubes with a wave-like cross-section with an irregularly varying diameter, the individual tube sections being made up of individual parts which are soldered together, riveted together or connected in some other way, or a muffler section is made by inflating an initially cylindrical one Sheet metal jacket pressed into the cavities of a stable, two-part shape that later shaped the silencer tube. Protection is also sought for these types of muffler pipe independently of a winding pipe.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
EP86104906A 1985-04-12 1986-04-10 Dispositif pour la fabrication des tubes enroulés ainsi que tube enroulé Withdrawn EP0201729A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE8510780U 1985-04-12
DE19858510780 DE8510780U1 (de) 1985-04-12 1985-04-12 Rohrartiger Schalldämpfer für klimatisierte Luft
DE8510781U 1985-04-12
DE19858510781 DE8510781U1 (de) 1985-04-12 1985-04-12 Vorrichtung zur Herstellung von Wickelrohr sowie Wickelrohr

Publications (2)

Publication Number Publication Date
EP0201729A2 true EP0201729A2 (fr) 1986-11-20
EP0201729A3 EP0201729A3 (fr) 1987-04-29

Family

ID=25950305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86104906A Withdrawn EP0201729A3 (fr) 1985-04-12 1986-04-10 Dispositif pour la fabrication des tubes enroulés ainsi que tube enroulé

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EP (1) EP0201729A3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021110492A1 (de) 2021-04-23 2022-10-27 Häusler Holding Ag Vorrichtung und Verfahren zur Herstellung eines doppelwandigen Rohres

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103629778A (zh) * 2013-12-17 2014-03-12 浙江富海建筑装饰工程股份有限公司 一种室内排风系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH440191A (de) * 1964-12-11 1967-07-31 Elumin Ab Oy Maschine zur Herstellung schraubenlinienförmig gewickelter Rohre
GB1125885A (en) * 1964-10-31 1968-09-05 Lothar Kehne Machine for the manufacture of cylindrical and tapered spiral seam tubes
GB1276725A (en) * 1969-05-27 1972-06-07 Lloyd Elliott Embury Means and method for fabricating tapered tubing
US4197728A (en) * 1978-09-11 1980-04-15 Mcgowen Lloyd E Flexible piping method and apparatus of producing same
EP0104844A2 (fr) * 1982-09-28 1984-04-04 Security Lumber & Supply Co. Dispositif pour la fabrication de tubes flexibles et ondulés

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU47290A1 (fr) * 1963-11-08 1965-05-05

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1125885A (en) * 1964-10-31 1968-09-05 Lothar Kehne Machine for the manufacture of cylindrical and tapered spiral seam tubes
CH440191A (de) * 1964-12-11 1967-07-31 Elumin Ab Oy Maschine zur Herstellung schraubenlinienförmig gewickelter Rohre
GB1276725A (en) * 1969-05-27 1972-06-07 Lloyd Elliott Embury Means and method for fabricating tapered tubing
US4197728A (en) * 1978-09-11 1980-04-15 Mcgowen Lloyd E Flexible piping method and apparatus of producing same
EP0104844A2 (fr) * 1982-09-28 1984-04-04 Security Lumber & Supply Co. Dispositif pour la fabrication de tubes flexibles et ondulés

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021110492A1 (de) 2021-04-23 2022-10-27 Häusler Holding Ag Vorrichtung und Verfahren zur Herstellung eines doppelwandigen Rohres

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Publication number Publication date
EP0201729A3 (fr) 1987-04-29

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