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EP0318905B1 - Procédé et appareil pour la fabrication de tuyaux de descente - Google Patents

Procédé et appareil pour la fabrication de tuyaux de descente Download PDF

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Publication number
EP0318905B1
EP0318905B1 EP88119856A EP88119856A EP0318905B1 EP 0318905 B1 EP0318905 B1 EP 0318905B1 EP 88119856 A EP88119856 A EP 88119856A EP 88119856 A EP88119856 A EP 88119856A EP 0318905 B1 EP0318905 B1 EP 0318905B1
Authority
EP
European Patent Office
Prior art keywords
mandrel
pipe profile
section
bending
pipe
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
EP88119856A
Other languages
German (de)
English (en)
Other versions
EP0318905A3 (en
EP0318905A2 (fr
Inventor
Peter Emmrich
Hans Marx
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.)
Rheinzink GmbH and Co KG
Original Assignee
Rheinzink GmbH and Co KG
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 Rheinzink GmbH and Co KG filed Critical Rheinzink GmbH and Co KG
Publication of EP0318905A2 publication Critical patent/EP0318905A2/fr
Publication of EP0318905A3 publication Critical patent/EP0318905A3/de
Application granted granted Critical
Publication of EP0318905B1 publication Critical patent/EP0318905B1/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
    • 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
    • B21C37/10—Making tubes with seams being neither welded nor soldered, e.g. riveted seams
    • B21C37/101—Making of the seams
    • 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
    • B21C37/10—Making tubes with seams being neither welded nor soldered, e.g. riveted seams

Definitions

  • the invention relates to a method and a device for the production of folded pluggable downpipes, in particular according to DIN 18 461, by bending formed from non-ferrous metals, preferably zinc and copper material, existing in a preforming arrangement sheet metal strips of certain cut width and cut length to pre-rounded pipe profiles, the Edged longitudinal edges, brought together to form a fold connection and bent flat on the outer circumference of the tubular profile.
  • non-ferrous metals preferably zinc and copper material
  • foldable plug-in downpipes are standardized, which are made from sheet metal strips of non-ferrous metal with a cutting width of 200 to 500 mm by bending, the longitudinal edges of which are connected to each other via a fold connection lying flat on the outer circumference of the downpipes.
  • the diameter at the narrower pipe end is designed to be insertable into the further pipe end of the subsequent downpipe in such a way that the inside diameter at the narrower pipe end is approximately twice the wall thickness smaller than at the further pipe end.
  • downpipes of this type can be produced from sheet metal strips of the desired cut length cut from an endless sheet metal strip to the desired length in such a way that the sheet metal strip is inserted into a bending section and into a reciprocating pulling carriage which passes the sheet metal strip through Bending stretch pulls through, is clamped. With each backward movement of the slide, the sheet metal strip is held in place and released in the outward direction during the forward movement.
  • the initially flat, but then more and more curved bending shape of the bending section narrows to a cylindrical fold shape.
  • the two longitudinal edges of the bending shape are turned inwards by approximately 180 °.
  • the sheet metal strip is supported in these envelopes in the course of the deformation until the envelopes are finally omitted and the longitudinal edges of the sheet metal strip reach a folding device in which one longitudinal edge is bent to the standing seam and the other to the Z fold.
  • a subsequent closing device the two folds are brought together, the standing seam is covered by the Z fold and both folds are bent by 90 ° C., as a result of which the fold connection comes to lie flat on the outer circumference of the downpipe.
  • the downpipe After leaving the closing device, the downpipe is guided over a mandrel corresponding to its width, through which the deformation stresses of the sheet metal strip are compensated and the surface lines of the downpipes are smoothed.
  • This device is perfected in that, according to DE-A-2 629 559, the endless sheet metal strip is inserted directly into the bending section and an endless tube is made from it, from which the downpipes of the desired length can then be cut to length using a so-called flying saw.
  • the object of the present invention is therefore to produce downpipes of the shape described at the outset in such a way that their outer surface has a high quality and is free from scratches and scratches.
  • the fold connection of the pipe profiles which have been rounded by roll profiling, is formed in several sections by bending with rotating tool movement, each pipe profile is transported in the outlet direction by the length of the section of the fold connection formed in each case, and the pipe section in the manufacture of the last section of the fold connection this section is manufactured expanded.
  • the method according to the invention permits the mechanical production of rebated connections which, based on the outer circumference of the downpipe, can lie completely inside, completely outside or partly outside and partly inside.
  • the downpipes have a high surface quality, as they are practically free of scratches and / or scratches, which ensures a uniform wall thickness.
  • the device for carrying out the method according to the invention consists of a roll profiling device formed from a plurality of drivable bending roller pairs, the axes of which lie in the bending plane, for bending the sheet metal strips into pre-rounded tubular profiles, a stationary, essentially cylindrical mandrel with a conically or cylindrically widened section on the inlet side and with in Direction of outlet lying axis for receiving the pre-rounded tubular profile, counter-holder attached to the side of the mandrel, which can be moved transversely to the axis of the mandrel, for pressing the tubular profile onto the mandrel and a reversible one of several that can be driven Bending roll pairs, the axes of which are perpendicular or inclined to the bending plane, formed folding tool for edging and compressing the folds and folding the fold connection.
  • the mandrel is divided in the longitudinal direction in such a way that the two segments can be displaced relative to one another along the parting plane emerging at the end faces of the mandrel, which is inclined relative to the plane including the axis of the mandrel.
  • the diameter of the mandrel is reduced perpendicular to the plane including the axis of the mandrel, so that the tubular profile can be pulled off the mandrel.
  • the mandrel is divided in the longitudinal direction along a dividing plane emerging at the end faces of the mandrel and the two segments can be spread apart.
  • the folded connection of the tubular profile is produced in a spread state; by reducing the spread, the diameter of the mandrel decreases perpendicularly on the plane comprising the axis of the mandrel and the tubular profile can be removed from the mandrel.
  • the mandrel can also be made of a rubber-elastic material and its effective diameter can be adjusted by compressing the end faces. By reducing the pressure load, the effective diameter of the mandrel is reduced to the initial size, which is smaller than the diameter of the tubular profile, and the tubular profile can be removed from the mandrel.
  • the length of the mandrel is at least 10%, preferably 10 to 50% of the length of the tubular profile.
  • the folding tool is designed such that the tubular profile is also transported when it moves in the outlet direction.
  • a rolling straightening section can be arranged downstream of the folding tool, in which the tubular profile is straightened.
  • a sheet metal strip (5) corresponding to the desired length of the downpipe is cut to length from the sheet metal strip (2) that runs out of the reel (1) and passed through the two pairs of straightening rollers (6 ) into the six Rolling roll pairs (7), which are arranged one behind the other, are introduced into the roll profiling device, in which the sheet metal strip (5) is rounded to form a tubular profile (8).
  • the tubular section (8) is then pushed with its first section onto the stationary cylindrical mandrel (9), which in the longitudinal direction emerges along a plane (10) which emerges at the end faces of the mandrel (9) and is inclined with respect to the plane including the axis of the mandrel.
  • the length of the mandrel (9) is approximately 10% of the length of the tubular profile (8).
  • the inlet-side section (9 ') of the mandrel has a conical outer shape.
  • the tubular profile (8) is pressed firmly onto the mandrel (9), so that the longitudinal edges without problems for producing the folded connection in the bending section of the Folding tool (15) can run in.
  • the tubular profile (8) is moved forward by the folding tool (15) moving in the outlet direction.
  • the conically widened insertion end of the tubular profile (9) is formed.
  • the two segments (11, 11 ') of the mandrel (9) are displaced relative to one another along the division plane (10), the diameter of the mandrel (9) is reduced and the tubular profile (8) can be pulled off the mandrel (9).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Vehicle Body Suspensions (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Claims (8)

  1. Procédé pour la fabrication de tuyaux de descente d'eaux pluviales agrafés et emboîtables, en particulier selon DIN 18 461, et ce par déformation par cintrage de tronçons de tôle en métaux non ferreux, de préférence à base de zinc et de cuivre, découpés à une certaine largeur et à une certaine longueur qui, déplacés dans un dispositif de préformage, sont précintrés en profilés de tuyaux, dont les bords longitudinaux sont placés de chant, assemblés par agrafage, et recourbés à plat sur la circonférence extérieure du profilé du tuyau, caractérisé en ce que l'agrafage des profilés de tuyau pré-cintrés par laminage est formé par déformation de cintrage en plusieurs étapes à l'aide de mouvements d'outils tournants, en ce que le profilé de tuyau est transporté en direction de la sortie d'une longueur correspondant à la partie d'agrafage respectivement formée, et en ce que, lors de la réalisation de la dernière partie du troncon d'agrafage, le profilé de tuyau est évasé dans ce tronçon.
  2. Dispositif pour la mise en oeuvre du procédé selon la revendication 1, constitué d'un dispositif de cintrage (7) destiné à la déformation par cintrage du tronçon de tôle en un profilé de tuyau (8) pré-cintré, et d'un mandrin (9) fixé à demeure sensiblement cylindrique destiné à la réception du profilé de tuyau pré-cintré, dont l'axe est situé en direction de la sortie, caractérisé en ce que le dispositif de cintrage est constitué de plusieurs couples de cylindres de cintrage (16) pouvant être entraînés, dont les axes se situent dans le plan de cintrage, en ce que le mandrin (9) présente du côté entrée une section (9') élargie de forme conique ou cylindrique, en ce que des contre-bouterolles (18) pouvant être déplacées dans le sens transversal à l'axe du mandrin pour appliquer le profilé de tuyau sur le mandrin sont disposées sur le côté du mandrin, et en ce qu'il est disposé un outil d'agrafage (15) réversible pour relever et assembler les plis (17) et pour rabattre l'agrafage sur la circonférence extérieure du profilé de tuyau (8), constitué de plusieurs couples de cylindres de cintrage (16) dont les axes sont perpendiculaires ou inclinés par rapport au plan de cintrage.
  3. Dispositif selon la revendication 2, caractérisé en ce que le mandrin (9) est divisé dans le sens longitudinal, et en ce que le plan de séparation (10) débouchant sur les faces frontales du mandrin des deux segments (11, 11') pouvant être déplacés l'un par rapport à l'autre dans le sens longitudinal, est incliné par rapport au plan passant par l'axe du mandrin.
  4. Dispositif selon la revendication 2, caractérisé en que le mandrin (9) est divisé dans le sens longitudinal le long d'un plan de séparation (10) débouchant sur l'un des côtés frontaux du mandrin, et en ce que les deux segments (11, 11') peuvent être écartés l'un par rapport à l'autre.
  5. Dispositif selon la revendication 2, caractérisé par un mandrin (9) réalisé en un matériau à base de gomme élastique dont le diamètre utile est réglable par application d'une pression sur les faces frontales.
  6. Dispositif selon l'une des revendications 3, 4 ou 5, caractérisé en ce que la longueur du mandrin (9) est égale à au moins 10 % de la longueur du profilé de tuyau (8), de préférence de 10 à 50 %.
  7. Dispositif selon l'une quelconque des revendications 2 à 6, caractérisé en ce que l'outil d'agrafage (15) est conçu en tant que dispositif de transport pour acheminer le profilé de tuyau (8) en direction de la sortie.
  8. Dispositif selon l'une quelconque des revendications 2 à 7, caractérisé en ce qu'une section de dressage par cylindres est disposée en aval de l'outil d'agrafage (15).
EP88119856A 1987-12-02 1988-11-29 Procédé et appareil pour la fabrication de tuyaux de descente Expired - Lifetime EP0318905B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873740750 DE3740750A1 (de) 1987-12-02 1987-12-02 Verfahren und vorrichtung zur herstellung von regenfallrohren
DE3740750 1987-12-02

Publications (3)

Publication Number Publication Date
EP0318905A2 EP0318905A2 (fr) 1989-06-07
EP0318905A3 EP0318905A3 (en) 1990-09-19
EP0318905B1 true EP0318905B1 (fr) 1994-06-15

Family

ID=6341676

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88119856A Expired - Lifetime EP0318905B1 (fr) 1987-12-02 1988-11-29 Procédé et appareil pour la fabrication de tuyaux de descente

Country Status (4)

Country Link
EP (1) EP0318905B1 (fr)
AT (1) ATE107203T1 (fr)
DE (2) DE3740750A1 (fr)
DK (1) DK169907B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991016156A1 (fr) * 1990-04-12 1991-10-31 Die-Craft Engineering Pty. Ltd Conduit tronconique
RU2181313C2 (ru) * 2000-06-13 2002-04-20 Открытое акционерное общество "Череповецкий сталепрокатный завод" Профилегибочный стан для изготовления труб с фальцевым швом
RU2270731C1 (ru) * 2004-08-09 2006-02-27 Общество с ограниченной ответственностью "Русские карнизы" Оправка для обжатия труб с внутренним фальцевым швом
RU2276627C1 (ru) * 2004-09-28 2006-05-20 Общество с ограниченной ответственностью "Русские карнизы" Профилегибочный стан

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1408232A (en) * 1917-05-12 1922-02-28 Frank H Stolp Method of forming sheet metal
US2644416A (en) * 1949-02-02 1953-07-07 Oldberg Mfg Company Apparatus for forming tubes
GB867915A (en) * 1956-06-02 1961-05-10 Metal Developments Ltd Improvements relating to columns
DE3022671A1 (de) * 1980-06-18 1982-01-14 Krückels, Gerhard, Dipl.-Ing., 7860 Schopfheim Profiliermaschine und verfahren zur herstellung eines profiles

Also Published As

Publication number Publication date
EP0318905A3 (en) 1990-09-19
EP0318905A2 (fr) 1989-06-07
ATE107203T1 (de) 1994-07-15
DK671488A (da) 1989-06-03
DE3850225D1 (de) 1994-07-21
DE3740750A1 (de) 1989-06-15
DK671488D0 (da) 1988-12-01
DK169907B1 (da) 1995-04-03

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