DK169907B1 - Method and apparatus for making folded, insertable downpipes - Google Patents

Method and apparatus for making folded, insertable downpipes Download PDF

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Publication number
DK169907B1
DK169907B1 DK671488A DK671488A DK169907B1 DK 169907 B1 DK169907 B1 DK 169907B1 DK 671488 A DK671488 A DK 671488A DK 671488 A DK671488 A DK 671488A DK 169907 B1 DK169907 B1 DK 169907B1
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DK
Denmark
Prior art keywords
mandrel
pipe profile
profile
bending
length
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DK671488A
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Danish (da)
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DK671488A (en
DK671488D0 (en
Inventor
Peter Emmerich
Hans Marx
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Rheinzink Gmbh
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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 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
    • B21C37/10—Making tubes with riveted seams or with non-welded and non-soldered 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 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
    • B21C37/10—Making tubes with riveted seams or with non-welded and non-soldered seams

Abstract

In a method for making lock-seamed push-in downpipes, the longitudinal edges of pipe profiles prerounded by forming sheet-metal strip blanks of a certain width and length under bending conditions are set on edge, then brought together to form a seamed connection, whereupon the latter is bent over flat onto the outer circumference of the pipe profile. In order to achieve high surface quality of the downpipes, the seamed connection is formed by forming the longitudinal edges of the pipe profile in several sections under bending conditions, using a rotary tool motion, the pipe profile is transported in the delivery direction by the length of the respectively formed section of the seamed connection and, in the production of the last section of the seamed connection, the pipe profile is widened in this section.

Description

DK 169907 B1DK 169907 B1

Opfindelsen angår en fremgangsmåde og et apparat til fremstilling af falsede, indstikkelige nedløbsrør, navnlig ifølge DIN 18 461, ved bøjningsformning af af ikke-jemmetal, fortrinsvis zink- eller kobbermateriale, bestående blikstrim-5 ler med bestemt tilskæringsbredde og tilskæringslængde til forrundede rørprofiler, hvis langsgående kanter opkantes, sammenføres under dannelse af en falsforbindelse, og denne ombøjes fladt på yderomkredsen af rørprofilet.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a method and apparatus for producing folded, insertable downpipes, in particular according to DIN 18 461, by bending molding of non-ferrous metal, preferably zinc or copper material, consisting of tin strips having a specific cutting width and cutting length for rounded pipe profiles. longitudinal edges are angled, joined together to form a seam joint, and this is bent flat on the outer circumference of the pipe profile.

Ved DIN 18 461 er standardiseret falsede, indstil-10 lelige nedløbsrør, der fremstilles af blikstrimler af ikke--jernmetal med 200 til 500 mm tilskæringsbredde, idet deres langsgående kanter er forbundet via en fladt på yderomkredsen af nedløbsrøret liggende falsforbindelse. Diameteren ved den snævre rørende er udformet indstikkelig passende i den 15 brede rørende af det efterfølgende nedløbsrør på den måde, at inderdiameteren ved den snævre rørende omtrent er den dobbelte vægtykkelse mindre end ved den brede rørende.At DIN 18 461, standard, foldable, adjustable downpipes are manufactured from non-ferrous metal strips of 200 to 500mm cutting width, their longitudinal edges being connected via a flat seam located on the outer circumference of the downpipe. The diameter of the narrow tube is designed to be fitably in the 15 wide tube of the subsequent downpipe in such a way that the inner diameter of the narrow tube is approximately twice the wall thickness less than that of the wide tube.

Ifølge DE patentskrift nr. 1 170 891 kan et sådant nedløbsrør fremstilles af fra et endeløst blikbånd af ønsket 20 tilskæringsbredde afskårne blikstrimler med ønsket tilskæringslængde på den måde, at blikstrimlerne indføres i en bøjestrækning og indspændes i en frem- og tilbagebevægelig trækslæde, der trækker blikstrimlerne gennem bøj estrækningen. Ved hver tilbagebevægelse af trækslæden bliver blikstrimlen 25 fastholdt og ved hver fremadbevægelse frigivet i udgangsretningen. Den først flade, men så mere og mere nedad hvælvede bøjeform indsnævres i bøjestrækningen til en cylindrisk falseform. De to langsgående kanter af bøjeformen bøjer ca. 180° indad. I disse ombøjninger understøttes blikstrimlen 30 under forløbet af deformationen, indtil sluttelig ombøjningerne bortfalder, og de langsgående kanter af blikstrimlen kommer ind i en falseindretning, i hvilken den ene langsgående kant bøjes til en opstående fals og den anden til en Z-fals. I en efterfølgende lukkeindretning sammenføres de 35 to false, den opstående fals bliver derved dækket af Z-falsen og de to false ombøjet 90°, hvorved falsforbindelsen kommer DK 169907 B1 2 ¥ til at ligge fladt på yderomkredsen af nedløbsrøret. Efter at have forladt lukkeindretningen føres nedløbsrøret over en til dets vidde svarende dorn, ved hjælp af hvilken deformationsspændinger i blikstrimlen udlignes og nedløbsrørets 5 kappelinier glattes. Dette apparat er fuldkommengjort ved, at det endeløse blikbånd ifølge DE offentliggørelsesskrift nr. 2 629 559 umiddelbart indføres i bøj estrækningen, og der deraf fremstilles et endeløst rør, af hvilket nedløbsrør af ønsket længde kan afskæres ved hjælp af en såkaldt fly-10 vende sav.According to U.S. Patent No. 1,170,891, such a downpipe can be made of an endless tape of the desired cutting width 20 cut strips of desired cutting length in that the eye strips are inserted into a bending stretch and clamped in a forward and backwardly movable drawstring drawstring. through the bend stretch. At each backward movement of the drawstring, the tin strip 25 is retained and at each forward movement released in the exit direction. The first flat but then more and more downwardly curved bend shape narrows in the bending section to a cylindrical fold shape. The two longitudinal edges of the bend shape bend approx. 180 ° inwards. In these bends, the tin strip 30 is supported during the course of the deformation until finally the bends fall away and the longitudinal edges of the tin strip enter into a folding device in which one longitudinal edge bends to an upright fold and the other to a Z-fold. In a subsequent closure device, the two folds are joined together, the raised fold is thereby covered by the Z-fold and the two folds are bent 90 °, whereby the fold connection will lie flat on the outer circumference of the downpipe. After leaving the closing device, the downpipe is passed over a mandrel corresponding to its width, by means of which deformation stresses in the tin strip are equalized and the sheath lines of the downpipe 5 are smoothed. This apparatus is accomplished in that the endless tin tape according to DE Publication No. 2 629 559 is immediately inserted into the bending stretch, and there is produced an endless tube from which the downpipe of the desired length can be cut by means of a so-called flying saw .

De foran beskrevne indretninger til fremstilling af falsede nedløbsrør har ganske vist i mange år hævdet sig i praksis, men der hæfter dog den ulempe ved dem, at der ved trækning af blikstrimlen eller blikbåndet gennem bøjeformen 15 danner sig furer eller afskrabninger på yderoverfladen af nedløbsrøret, som påvirker den æstetiske virkning af nedløbsrøret betydeligt og fører til en uensartet vægtykkelse.The devices described above for the manufacture of folded downpipes have for many years claimed in practice, however, the disadvantage of them is that, by pulling the tin strip or eye tape through the bending mold 15, grooves or scrapes form on the outer surface of the downpipe. which significantly affects the aesthetic effect of the downpipe and leads to a uniform wall thickness.

Det er derfor formålet for den foreliggende opfindelse at fremstille et nedløbsrør af den indledningsvis beskrevne 20 form således, at dets yderoverflade har en høj kvalitet og er fri for furer og afskrabninger.It is therefore the object of the present invention to produce a downpipe of the form described initially so that its outer surface has a high quality and is free of grooves and scrapes.

Dette formål opnås ved, at falsforbindelsen formes på det forrundede rørprofil ved bøjningsformning med drejende værktøjsbevægelse i flere afsnit, at rørprofilet transpor-25 teres længden af det hver gang formede afsnit af falsforbindelsen i udløbsretningen, og at rørprofilet ved fremstillingen af det sidste afsnit af falsforbindelsen i dette afsnit fremstilles udvidet.This object is achieved by forming the seam connection on the rounded pipe profile by bending forming with rotating tool movement in several sections, the pipe profile being transported the length of the each shaped section of the seam connection in the outlet direction and the pipe profile in the manufacture of the last section of the seam connection. this section is extended.

Fremgangsmåden ifølge opfindelsen tillader maskinel 30 fremstilling af falsforbindelser, der i forhold til yderomkredsen af nedløbsrøret kan ligge fuldstændig indenfor, fuldstændig udenfor eller tildels indenfor og tildels udenfor. Nedløbsrørene har en høj overfladekvalitet, da de praktisk taget er fri for furer og/eller afskrabninger, og derved 35 er der sikret en ensartet vægtykkelse.The method according to the invention permits machine 30 to produce seam connections which, in relation to the outer circumference of the downpipe, can be completely inside, completely outside or partly inside and partly outside. The downpipes have a high surface quality as they are practically free of grooves and / or scrapes, thereby ensuring a uniform wall thickness.

* d DK 169907 B1 3* d DK 169907 B1 3

Apparatet til udøvelse af fremgangsmåden består ifølge opfindelsen af en af flere drivelige bøjevalsepar, hvis akser ligger i bøjningsplanet, dannet valseprofileringsindretning til bøjningsformning af blikstrimlerne til et for-5 rundet rørprofil, en stationær, med sin akse i udgangsretningen liggende, i det væsentlige cylindrisk dorn med et på indgangssiden konisk eller cylindrisk udvidet afsnit til optagelse af det forrundede rørprofil, ved siden af dornen anbragte, tværs på dornens akse forskydelige modholdere til 10 fasttrykning af rørprofilet på dornen og et reverserbart, af flere bøjevalsepar, hvis akser står vinkelret eller skråt på bøjningsplanet, dannet falseværktøj til opkantning og sammenføring af falsen og omlægning af falsforbindelsen på yderomkredsen af rørprofilet.According to the invention, the apparatus for carrying out the method consists of one of a plurality of drivable bending roll pairs whose axes lie in the bending plane, formed roll profiling device for bending the tin strips into a rounded tube profile, a stationary, with its axis substantially in the direction of orientation, substantially cylindrical having a conical or cylindrical widened section for receiving the rounded tube profile, adjacent to the mandrel, displaceable rails transverse to the mandrel for securing the tube profile to the mandrel and a reversible, plurality of bending roller pairs whose axes are perpendicular or inclined the bending plane, formed sealing tool for mounting and joining the seam and re-sealing the seam connection on the outer circumference of the pipe profile.

15 Ifølge et særligt træk hos apparatet er dornen delt således i længderetningen, at de to segmenter er forskydelige i forhold til hinanden langs det ved endefladerne udgående delingsplan, der er skråt i forhold til det dornens akse indesluttende plan. Ved forskydning af segmenterne i forhold 20 til hinanden formindskes diameteren af dornen vinkelret på det dornens akse indesluttende plan, så at rørprofilet kan trækkes af fra dornen.According to a particular feature of the apparatus, the mandrel is divided longitudinally such that the two segments are displaceable relative to each other along the dividing plane extending at the end faces inclined to the axis of the mandrel. By displacing the segments relative to one another, the diameter of the mandrel is reduced perpendicular to the axis of the mandrel, so that the tubular profile can be pulled off from the mandrel.

Den samme virkning kan også opnås ved, at dornen er delt langs et ved endefladerne af dornen udgående delings-25 plan, og de to segmenter er spredelige i forhold til hinanden. I spredt tilstand fremstilles rørprofilets falsforbindelse. Ved tilbagetagning af spredningen formindskes dornens diameter vinkelret på det dornens akse omfattende plan, og rørprofilet kan aftages fra dornen.The same effect can also be obtained by dividing the mandrel along a dividing plane extending at the end faces of the mandrel and the two segments being spaced relative to each other. In the spread mode, the pipe profile of the pipe profile is made. Upon withdrawal of the spread, the diameter of the mandrel is reduced perpendicular to the plane of the mandrel axis and the pipe profile can be removed from the mandrel.

30 Dornen kan også bestå af et gummielastisk materiale, og dens virksomme diameter være indstillelig ved trykbelastning af endefladerne. Ved ophævelse af trykbelastningen går den virksomme diameter af dornen tilbage til udgangsstørrelsen, og rørprofilet kan fjernes fra dornen.The mandrel may also consist of a rubber-elastic material and its effective diameter can be adjusted by pressure loading of the end surfaces. When lifting the pressure load, the effective diameter of the mandrel returns to the output size and the pipe profile can be removed from the mandrel.

35 DK 169907 B1 4 fe *35 DK 169907 B1 4 fe *

Ifølge en foretrukken udførelsesform for apparatet andrager længden af dornen mindst 10%, fortrinsvis 10 til 50%, af længden af rørprofilet.According to a preferred embodiment of the apparatus, the length of the mandrel is at least 10%, preferably 10 to 50%, of the length of the pipe profile.

Ifølge et yderligere opfindelsestræk er falseværktøjet 5 udformet således, at rørprofilet ved dets bevægelse i udgangsretningen transporteres med.According to a further feature of the invention, the socket tool 5 is designed so that the pipe profile is transported with it in its exit direction.

Hvis det er nødvendigt, kan der efter falseværktøjet yderligere være anbragt en valserettestrækning, i hvilken rørprofilet bliver rettet.If necessary, a roller straightening may be provided after the socket tool in which the pipe profile is directed.

10 Opfindelsen skal i det følgende beskrives nærmere, idet der henvises til tegningen, på hvilken fig. 1 viser en skematisk gengivelse af et apparat til fremstilling af falsede og indstikkelige nedløbsrør, fig. 2 et tværsnit gennem apparatet i området for 15 dornen, fig. 3 en del af dornen og falseværktøjet, set fra siden, og fig. 4 en del af dornen og falseværktøjet set ovenfra.The invention will now be described in more detail with reference to the drawing, in which: 1 is a schematic representation of an apparatus for making folded and insertable downpipes; FIG. 2 is a cross-section through the apparatus in the region of the mandrel; FIG. 3 is a side view of a portion of the mandrel and socket tool; and FIG. 4 is a top view of the mandrel and the folding tool.

Af det fra en rulle 1 afrullede blikbånd 2 med bestemt 20 tilskæringsbredde bliver der efter gennemløb gennem indtrækningsruller 3 ved hjælp af en overskæringsmekanisme 4 afskåret en blikstrimmel 5 svarende til den ønskede længde af nedløbsrøret, og den indføres gennem to rettevalsepar 6 i en af seks bag hinanden anbragte, drevne bøjevalsepar 7 25 dannet valseprofileringsindretning, i hvilken blikstrimmelen 5 rundes til et rørprofil 8. Derpå skydes rørprofilet 8 med sit første afsnit på en stationært anbragt, cylindrisk dorn 9, der i længderetningen er delt således langs et ved endefladerne af dornen udgående, i forhold til det dornens akse 30 indesluttende plan hældende plan, at de to segmenter er forskydelige i forhold til hinanden. Det mod indløbsenden vendende afsnit 9’ af dornen har en konisk yderform. Et via styreruller 12 i styreskinner 13 i en bæreramme 14 reverserbart ført falseværktøj 15 fremføres mod udgangsretningen 35 over dornen 9, så at drevne bøjevalsepar 16 opkanter de langsgående kanter af rørprofilet 8 til falsning 17 og sam- DK 169907 B1 5 menfører disse under dannelse af en falsforbindelse og ombøjer denne 90° på yderomkredsen af nedløbsrøret. Ved hjælp af til siden skråt ovenfor dornen 9 anbragte, på tværs af dornens akse forskydelige modholdere 18 trykkes rørprofilet 5 fast på dornen 9, så at de langsgående kanter kan løbe problemfrit ind i falseværktøjet 15's bøjestrækning. Efter fremstillingen af hvert afsnit af falsforbindelsen bliver rørprofilet 8 bevæget fremad ved hjælp af falseværktøjet 15, der bevæger sig i udgangsretningen. Ved formgivningen 10 af det sidste afsnit af falsforbindelsen formes den konisk udvidede indstiksende af rørprofilet 9. Så bliver de to segmenter 11 og 11' af dornen 9 forskudt i forhold til hinanden langs deleplanet 10, diameteren af dornen formindskes, og rørprofilet 8 kan aftrækkes fra dornen 9.From the roll-away roll 2 of a roll 1 of a determined 20 cutting width, after passage through retraction rollers 3, by means of a cutting mechanism 4, an eye strip 5 corresponding to the desired length of the downpipe is cut and it is inserted through two straight roller pairs 6 in one of six rear spaced-apart bending roller pairs 7 formed roll profiling device in which the tin strip 5 is rounded to a tube profile 8. Then the tube profile 8 is shot with its first section on a stationary, cylindrical mandrel 9, which is longitudinally distributed along one extending at the end faces of the mandrel , relative to the inclined plane of the mandrel axis 30, that the two segments are displaceable relative to each other. The section 9 'facing the inlet end of the mandrel has a conical outer shape. A folding tool 15 is reversibly guided via guide rollers 12 in guide rails 13 in a support frame 14 towards the output direction 35 over the mandrel 9, so that driven bending roller pairs 16 open the longitudinal edges of the pipe profile 8 to folding 17 and co-actuate these to form a seam connection and bends this 90 ° on the outer circumference of the downpipe. By means of a side slant above the mandrel 9 disposed transversely of the mandrel slider 18, the pipe profile 5 is pressed firmly onto the mandrel 9 so that the longitudinal edges can run smoothly into the bending stretch of the tool 15. After the preparation of each section of the seam connection, the pipe profile 8 is moved forward by the seam tool 15 moving in the exit direction. In shaping 10 of the last section of the seam connection, the tapered insertion of the pipe profile 9 is formed. Then the two segments 11 and 11 'of the mandrel 9 are displaced relative to one another along the dividing plane 10, the diameter of the mandrel is reduced and the pipe profile 8 can be subtracted. thorns 9.

Claims (8)

1. Fremgangsmåde til fremstilling af falsede, indstik-kelige nedløbsrør, navnlig ifølge DIN 18 461, ved bøjningsformning af af ikke-jernmetal, fortrinsvis zink- eller kob- 5 bermateriale, bestående blikstrimler med bestemt tilskæringsbredde og tilskæringslængde til forrundede rørprofiler, hvis langsgående kanter opkantes, sammenføres under dannelse af en falsforbindelse, og denne ombøjes fladt på yderomkredsen af rørprofilet, kendetegnet ved, at falsfor-10 bindeisen formes på det ved valseprofilering forrundede rørprofil ved bøjningsformning med drejende værktøjsbevægelse i flere afsnit, at rørprofilet transporteres længden af det hver gang formede afsnit af falsforbindelsen i udgangsretningen, og at rørprofilet ved fremstillingen af det sidste 15 afsnit af falsforbindelsen i dette afsnit fremstilles udvidet .A method for producing seamed, pluggable downpipes, in particular according to DIN 18 461, by bending molding of non-ferrous metal, preferably zinc or copper material, consisting of tin strips having a specific cutting width and cutting length for rounded tube profiles whose longitudinal tube profiles is folded, joined together to form a seam connection, and is bent flat on the outer circumference of the pipe profile, characterized in that the seam joint is formed on the tube profile rounded by roll profiling by bending forming with rotating tool movement in several sections, the length of the pipe profile is conveyed each time. shaped sections of the seam joint in the exit direction, and that the pipe profile in the manufacture of the last 15 sections of the seam joint in this section is expanded. 2. Apparat til udøvelse af fremgangsmåden ifølge krav 1, kendetegnet ved en af flere drivelige bøjevalsepar (16), hvis akser ligger i bøjningsplanet, dannet 20 valseprofileringsindretning (7) til bøjningsformning af blikstrimlerne til et forrundet rørprofil (8) , en stationær, med sin akse i udgangsretningen liggende, i det væsentlige cylindrisk dorn (9) med et på indgangssiden konisk eller cylindrisk udvidet afsnit (9·) til optagelse af det forrun-25 dede rørprofil, ved siden af dornen anbragte, tværs på dornens akse forskydelige modholdere (18) til fasttrykning af rørprofilet på dornen og et rever ser bart, af flere bøjevalsepar (16), hvis akser står vinkelret eller skråt på bøjningsplanet, dannet falseværktøj (15) til opkantning og sammenf οι 0 ring af falsen (17) og omlægning af falsforbindelsen på yderomkredsen af rørprofilet (8).Apparatus for carrying out the method according to claim 1, characterized by one of a plurality of drivable bending roll pairs (16), the axes of which are in the bending plane, formed 20 roll profiling device (7) for bending forming the tin strips into a rounded tube profile (8), a stationary, with its axis in the exit direction, substantially cylindrical mandrel (9) having a conical or cylindrical extended portion (9 ·) on the entrance side for receiving the annular tube profile, positioned adjacent the mandrel, transverse to the mandrel of the mandrel ( 18) for compression of the pipe profile on the mandrel and a reverber visible, of several bending roller pairs (16), the axes of which are perpendicular or inclined on the bending plane, formed sealing tool (15) for mounting and joining of the socket (17) and rearranging the the seam connection on the outer circumference of the pipe profile (8). 3. Apparat ifølge krav 2, kendetegnet ved, at dornen (9) er delt i længderetningen, og det ved endefladerne af dornen udgående delingsplan (10) for de to 35. længderetningen i forhold til hinanden forskydelige seg- 'ik DK 169907 B1 menter (11,11') er skråt i forhold til det dornens akse indesluttende plan.Apparatus according to claim 2, characterized in that the mandrel (9) is divided longitudinally and the dividing plane (10) extending at the end faces of the mandrel for the two 35 longitudinally displaceable segments relative to each other (11,11 ') is oblique to the plane of the mandrel's axis. 4. Apparat ifølge krav 2, kendetegnet ved, at dornen (9) er delt i længderetningen langs et ved 5 endefladerne af dornen udgående delingsplan (10), og at de to segmenter (11,11') er spredelige i forhold til hinanden.Apparatus according to claim 2, characterized in that the mandrel (9) is distributed longitudinally along a dividing plane (10) extending at the end faces of the mandrel and that the two segments (11, 11 ') are spaced relative to each other. 5. Apparat ifølge krav 2, kendetegnet ved en af gummielastisk materiale bestående dorn (9), hvis virksomme diameter kan etableres ved trykbelastning af ende- 10 fladerne.Apparatus according to claim 2, characterized by a mandrel (9) of rubber elastic material, the effective diameter of which can be established by compressive loading of the end faces. 6. Apparat ifølge krav 3, 4 eller 5,kendetegnet ved, at længden af dornen (9) andrager mindst 10%, fortrinsvis 10 til 50%, af længden af rørprofilet (8).Apparatus according to claim 3, 4 or 5, characterized in that the length of the mandrel (9) is at least 10%, preferably 10 to 50%, of the length of the pipe profile (8). 7. Apparat ifølge ethvert af kravene 2 til 6, k e n-15 detegnet ved, at falseværktøjet (15) er udformet som transportindretning for rørprofilet (8) i udgangsretningen.Apparatus according to any one of claims 2 to 6, characterized in that the socket tool (15) is designed as a transport device for the pipe profile (8) in the output direction. 8. Apparat ifølge ethvert af kravene 2 til 7, kendetegnet ved, at der efter falseværktøjet (15) er 20 anbragt en valserettestrækning.Apparatus according to any one of claims 2 to 7, characterized in that, after the sealing tool (15), a roller straightening is provided.
DK671488A 1987-12-02 1988-12-01 Method and apparatus for making folded, insertable downpipes DK169907B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3740750 1987-12-02
DE19873740750 DE3740750A1 (en) 1987-12-02 1987-12-02 METHOD AND DEVICE FOR PRODUCING RAINFALL PIPES

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DK671488D0 DK671488D0 (en) 1988-12-01
DK671488A DK671488A (en) 1989-06-03
DK169907B1 true DK169907B1 (en) 1995-04-03

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ATE107203T1 (en) 1994-07-15
DE3740750A1 (en) 1989-06-15
EP0318905A3 (en) 1990-09-19
DK671488A (en) 1989-06-03
EP0318905A2 (en) 1989-06-07
DK671488D0 (en) 1988-12-01
EP0318905B1 (en) 1994-06-15

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PBP Patent lapsed