ES2298903T3 - PROCEDURE FOR MANUFACTURING A FLEXIBLE ROLLED TUBE, READY INSIDE, AS WELL AS A ROLLED TUBE MANUFACTURED ACCORDING TO THE PROCEDURE. - Google Patents
PROCEDURE FOR MANUFACTURING A FLEXIBLE ROLLED TUBE, READY INSIDE, AS WELL AS A ROLLED TUBE MANUFACTURED ACCORDING TO THE PROCEDURE. Download PDFInfo
- Publication number
- ES2298903T3 ES2298903T3 ES05021761T ES05021761T ES2298903T3 ES 2298903 T3 ES2298903 T3 ES 2298903T3 ES 05021761 T ES05021761 T ES 05021761T ES 05021761 T ES05021761 T ES 05021761T ES 2298903 T3 ES2298903 T3 ES 2298903T3
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- Prior art keywords
- band
- waves
- wavy
- deformed
- tube
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Classifications
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- 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
- B21C37/124—Making tubes or metal hoses with helically arranged seams the tubes having a special shape, e.g. with corrugated wall, flexible tubes
-
- 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
- B21C37/121—Making tubes or metal hoses with helically arranged seams with non-welded and non-soldered 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
- B21C37/12—Making tubes or metal hoses with helically arranged seams
- B21C37/123—Making tubes or metal hoses with helically arranged seams of coated strip material; Making multi-wall tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
Procedimiento para fabricar un tubo ondulado flexible, liso en su interior, así como un tubo ondulado fabricado según el procedimiento.Procedure for manufacturing a corrugated pipe flexible, smooth inside, as well as a wavy tube manufactured according to the procedure
La invención se refiere a un procedimiento para fabricar un tubo ondulado flexible, liso en su interior, así como a un tubo ondulado fabricado según el procedimiento, mediante el enrollamiento helicoidal simultáneo de una banda exterior ondulada fina, preferentemente una banda de metal, y de una banda interior lisa fina, preferentemente una banda de metal, en el que al menos una onda de la banda ondulada exterior alimentada bajo tensión se inserta en al menos una onda del tubo bobinado producido previamente, interponiendo uno de los bordes de la banda interior lisa, alimentada bajo tensión, y al menos una de las ondas colocadas una dentro de otra se deforma por compresión, teniendo la banda interior lisa aproximadamente el mismo ancho que la banda exterior ondulada y siendo insertada la banda interior lisa por su otro borde en la onda del tubo bobinado, que se ha de deformar a continuación por compresión.The invention relates to a method for manufacture a flexible wavy tube, smooth inside, as well as to a corrugated tube manufactured according to the procedure, by means of the simultaneous helical winding of a wavy outer band thin, preferably a metal band, and an inner band smooth smooth, preferably a metal band, in which at least a wave of the outer wavy band fed under tension is inserted into at least one wave of the winding tube produced previously, interposing one of the edges of the inner band smooth, fed under tension, and at least one of the waves placed one inside another deforms by compression, the band having smooth inside approximately the same width as the outer band undulating and the smooth inner band being inserted by its other edge in the winding tube wave, to be deformed next by compression.
Un procedimiento de este tipo es conocido por la patente alemana DE4201859C2 de la solicitante. En este procedimiento, la banda interior lisa finaliza antes de la siguiente onda que se va a deformar. Al doblar el tubo ondulado fabricado de este modo, el borde no deformado de la banda interior lisa se dobla desde el interior del tubo y frecuentemente no vuelve a su posición original al volver a doblar el tubo ondulado. Además, puede entrar agua condensada detrás de la banda interior lisa y, por tanto, en el espacio hueco entre la banda interior lisa y la banda exterior ondulada y concentrarse allí en el transcurso del tiempo, por lo que en casos aislados puede producirse su corrosión. Además, este tubo ondulado no se puede limpiar.Such a procedure is known by the German patent DE4201859C2 of the applicant. In this procedure, the smooth inner band ends before the Next wave to be deformed. When folding the wavy tube manufactured in this way, the undeformed edge of the inner band smooth bends from inside the tube and often does not return to its original position when bending the corrugated tube again. Further, condensed water may enter behind the smooth inner band and, therefore, in the hollow space between the smooth inner band and the outer band wavy and concentrate there over the course of the time, so that in isolated cases corrosion can occur. In addition, this corrugated pipe cannot be cleaned.
Por la patente estadounidense 3487537 es conocido un procedimiento y un dispositivo para fabricar un tubo fijo rígido de interior liso y exterior ondulado, destinado principalmente para el uso como tubo de alcantarilla. Para ello, una banda ondulada y una banda lisa se enrollan simultáneamente de forma helicoidal a través de un mandril, estando situadas la banda lisa y la banda ondulada una sobre la otra y estando unidas cada una fijamente mediante pliegue por sus dos bordes con la espira siguiente.By US Patent 3487537 it is known a procedure and a device for manufacturing a tube rigid fixed of smooth interior and wavy exterior, destined Mainly for use as a sewer pipe. For it, a wavy band and a smooth band are simultaneously rolled up of helical shape through a mandrel, the band being located smooth and the wavy band one above the other and each being joined fixedly by folding its two edges with the spiral next.
Por la patente estadounidense 4160312 se conoce un tubo ondulado, compuesto por una banda exterior ondulada, bobinada de modo helicoidal, y una banda interior lisa, en el que las ondas situadas una dentro de la otra en los bordes de las bandas están deformadas por compresión.US Patent 4160312 is known a wavy tube, consisting of a wavy outer band, helically wound, and a smooth inner band, in which the waves located inside each other at the edges of the Bands are deformed by compression.
Partiendo de este estado de la técnica conocido, la invención tiene el objetivo de perfeccionar un procedimiento para fabricar un tubo ondulado flexible del tipo mencionado al principio, de tal modo que de una manera sencilla y económica sea posible la fabricación de un tubo ondulado flexible de interior liso.Starting from this known state of the art, the invention aims to perfect a procedure to manufacture a flexible corrugated tube of the type mentioned at principle, so that in a simple and economical way it is possible the manufacture of a flexible inner wavy tube smooth.
Este objetivo se consigue de tal manera que la banda interior lisa tiene al menos una ranura de doblado prevista que se extiende en el tubo bobinado, en el sentido longitudinal de la banda, en el centro entre dos vértices de onda de la banda ondulada exterior.This objective is achieved in such a way that the smooth inner band has at least one planned bending groove extending in the coiled tube, in the longitudinal direction of the band, in the center between two wave vertices of the band wavy outside.
De modo ventajoso, los bordes de la banda interior lisa presentan ondas preformadas en la zona de las ondas que se van a deformar por compresión.Advantageously, the edges of the band smooth interior have preformed waves in the wave zone They are going to deform by compression.
Preferentemente, los flancos de las ondas de la banda ondulada deformadas en forma de omega se comprimen por puntos alternando en intervalos con los vértices de las ondas deformadas.Preferably, the flanks of the waves of the Wavy band deformed in the form of omega are compressed by points alternating at intervals with the vertices of the waves deformed
De preferencia, el vértice de las ondas deformadas está en contacto plano con la cara interior del tubo ondulado.Preferably, the vertex of the waves deformed is in flat contact with the inner face of the tube curly.
Un tubo ondulado flexible fabricado según el procedimiento por una banda exterior ondulada bobinada de manera helicoidal y una banda interior lisa, en el que las ondas situadas unas dentro de otras en los bordes de las bandas se han deformado por compresión, presenta una ranura de doblado prevista que se extiende en el tubo bobinado, en el sentido longitudinal de la banda interior lisa, en el centro entre dos vértices de onda de la banda exterior ondulada.A flexible corrugated pipe manufactured according to the procedure by a wavy outer band wound so helical and a smooth inner band, in which the waves located inside each other at the edges of the bands have deformed by compression, it has a bending groove intended to be extends in the coiled tube, in the longitudinal direction of the smooth inner band, in the center between two wave vertices of the wavy outer band.
De modo ventajoso, los flancos de onda de las ondas deformadas en forma de omega están comprimidos por puntos alternando en intervalos con los vértices de las ondas deformadas.Advantageously, the wave flanks of the warped omega-shaped waves are compressed by points alternating at intervals with the vertices of the waves deformed
De preferencia, el vértice de las ondas deformadas en forma de omega está en contacto con la cara interna del tubo ondulado, estando enrasadas sus superficies.Preferably, the vertex of the waves deformed in the form of omega is in contact with the inner face of the wavy tube, its surfaces being flush.
Preferentemente, la profundidad de la ranura de doblado prevista de la banda interior lisa mide como máximo una tercera parte de la amplitud de las ondas de la banda exterior ondulada.Preferably, the groove depth of planned bending of the smooth inner band measures a maximum of third part of the amplitude of the outer band waves wavy
De preferencia, los materiales y/o el grosor de las bandas interior y exterior son diferentes. Preferentemente, la banda interior es de acero fino.Preferably, the materials and / or the thickness of the inner and outer bands are different. Preferably, the Inner band is stainless steel.
La invención está representada en los dibujos a título de ejemplo. Muestran:The invention is represented in the drawings a Sample title They show:
La figura 1 un dispositivo para fabricar una banda ondulada flexible, en vista en alzado;Figure 1 a device for manufacturing a flexible wavy band, in elevation view;
la figura 2 una banda exterior ondulada en sección transversal,figure 2 a wavy outer band in cross section,
las figuras 3, 4 y 5 bandas interiores lisas en sección transversal;Figures 3, 4 and 5 smooth inner bands in cross section;
la figura 6 bandas superpuestas sin deformación de las ondas situadas unas dentro de las otras, en sección transversal;Figure 6 overlapping bands without deformation of the waves located inside each other, in section cross;
la figura 7 las bandas según la figura 6, en estado deformado, vistas a escala ampliada;figure 7 the bands according to figure 6, in deformed state, enlarged views;
la figura 8 las bandas deformadas en sección transversal; yFigure 8 the deformed bands in section cross; Y
la figura 9 una onda deformada en forma de omega, en sección transversal, representada en escala ampliada.Figure 9 a deformed wave in the form of Omega, in cross section, represented on an enlarged scale.
Según la figura 1, a un dispositivo 1 para fabricar un tubo ondulado flexible se alimenta una banda exterior ondulada 2 que se extrae de un rodillo de reserva 3. Por encima de la banda ondulada 2, al dispositivo 1 se alimenta una banda interior lisa 4 que se extrae de un rodillo de reserva 5.According to Figure 1, to a device 1 for fabricating a flexible corrugated pipe is fed an outer band corrugated 2 that is removed from a reserve roller 3. Above the wavy band 2, to the device 1 a band is fed smooth interior 4 that is removed from a reserve roller 5.
El dispositivo 1 presenta una bobinadora 6 compuesta por unos rodillos de apoyo 8, dispuestos de forma circular en el contorno exterior del tubo ondulado 7 que se ha de bobinar, que pueden girar libremente, mediante dos rodillos de unión 9 y 10 accionables, que están dispuestos en el punto de entrada de las bandas 2 y 4 en la bobinadora y que atacan a ambos lados anchos de las bandas causando la unión mutua de las espiras de tubo contiguas en el tubo, así como por un rodillo doblador 14 dispuesto delante de los rodillos de unión 9 y 10.The device 1 has a winder 6 composed of support rollers 8, arranged circularly on the outer contour of the wavy tube 7 to be wound, that can rotate freely, using two connecting rollers 9 and 10 actionable, which are arranged at the point of entry of bands 2 and 4 on the winder and that attack both wide sides of the bands causing the mutual union of the adjacent tube turns in the tube, as well as by a bender roller 14 arranged in front of the connecting rollers 9 and 10.
Asimismo, el dispositivo 1 presenta un par de rodillos de accionamiento 11 para la banda interior lisa y un par de rodillos de accionamiento 12 para la banda exterior ondulada 2. Entre los pares de rodillos de accionamiento 11 y 12 y el rodillo doblador 14 están previstos respectivamente rodillos guía de banda 13 para la banda ondulada exterior 2 y la banda ondulada interior 4. Además, este tipo de rodillos guía de banda 22 se sitúan en el sentido de marcha de las bandas 2, 4, delante de los pares de rodillos de accionamiento 11 y 12.Also, device 1 has a pair of drive rollers 11 for the smooth inner band and a pair of drive rollers 12 for the corrugated outer band 2. Between the pairs of drive rollers 11 and 12 and the roller bender 14 are provided respectively belt guide rollers 13 for the outer wavy band 2 and the inner wavy band 4. In addition, this type of belt guide rollers 22 are located in the direction of travel of bands 2, 4, in front of the pairs of drive rollers 11 and 12.
Para fabricar un tubo ondulado flexible 7, la banda exterior 2 ondulada de forma homogénea es alimentada a la bobinadora 6 por el par de rodillos de accionamiento 12 y la banda interior lisa 4 es alimentada al mismo por el par de rodillos de accionamiento 11, insertándose en el tubo bobinado producido previamente, y las ondas dispuestas unas dentro de las otras se deforman de manera conocida, en forma de omega, por compresión de los flancos de onda con los vértices de onda.To make a flexible wavy tube 7, the homogeneously wavy outer band 2 is fed to the winder 6 by the pair of drive rollers 12 and the belt smooth interior 4 is fed to it by the pair of rollers of drive 11, inserting into the winding tube produced previously, and the waves arranged inside each other are they deform in a known way, in the form of omega, by compression of the wave flanks with the wave vertices.
Los pares de rodillos de accionamiento 11 y 12 que extraen las bandas 2, 4 de los rodillos de reserva 3 y 5 tienen una menor velocidad circunferencial que los rodillos de unión 9 y 10, por lo que las bandas 2 y 4 son alimentadas bajo tensión. Por una excéntrica no representada puede modificarse la distancia de los distintos rodillos de los pares de rodillos de accionamiento 11 y 12, pudiendo ajustarse de una manera sencilla la tensión de alimentación.The pairs of drive rollers 11 and 12 which remove the bands 2, 4 of the reserve rollers 3 and 5 have a lower circumferential speed than the connecting rollers 9 and 10, so that bands 2 and 4 are fed under tension. By an eccentric not shown can change the distance of the different rollers of the driving roller pairs 11 and 12, the tension of feeding.
La figura 2 muestra la banda exterior ondulada 2
en sección transversal, en tanto que las figuras 3 a 5 muestran en
sección transversal la banda interior lisa 4, en diferentes formas
de realización. Según las figuras 3 a 5, la banda interior lisa 4
tiene en sus bordes ondas 15 conformadas ya previamente que
corresponden a las ondas de la banda exterior ondulada 2. De esta
manera, se facilita la inserción de los bordes de la banda interior
lisa 4 en las ondas de la banda
exterior ondulada 2. Además,
la banda interior lisa 4 está guiada exactamente en los rodillos
guía de banda 13 y 22.Figure 2 shows the wavy outer band 2 in cross-section, while Figures 3 to 5 show in cross section the smooth inner band 4, in different embodiments. According to figures 3 to 5, the smooth inner band 4 has at its edges previously formed waves 15 corresponding to the waves of the wavy outer band 2. In this way, the insertion of the edges of the smooth inner band 4 is facilitated in the waves of the band
corrugated outer 2. In addition, the smooth inner band 4 is guided exactly on the belt guide rollers 13 and 22.
Como muestran las figuras 3 a 5, la banda interior lisa 4 posee ranuras de doblado previstas 16 que se extienden en el sentido longitudinal de la banda, que en el tubo bobinado (figuras 8 y 9) se sitúan en el centro entre dos vértices de la banda exterior ondulada 2. Según las figuras 5 y 8, la banda interior lisa 4 presenta tres ranuras de doblado controlado 16, según la figura 4 tiene cinco ranuras de doblado controlado 16 y según la figura 3 contiene un número de ranuras de doblado controlado 16 que corresponde al número de las ondas de la banda exterior ondulada 2.As figures 3 to 5 show, the band smooth interior 4 has bending grooves provided 16 which is extend in the longitudinal direction of the band, which in the tube winding (figures 8 and 9) are placed in the center between two vertices of the wavy outer band 2. According to figures 5 and 8, the band smooth interior 4 features three controlled folding slots 16, according to figure 4 it has five controlled folding slots 16 and according to figure 3 it contains a number of folding grooves controlled 16 corresponding to the number of band waves wavy exterior 2.
La profundidad de las ranuras de doblado controlado 16 mide como máximo una tercera parte de la amplitud de ondas de la banda ondulada 2.The depth of the bending grooves controlled 16 measures a maximum of one third of the amplitude of Wavy band waves 2.
Las ranuras de doblado controlado 16 garantizan que el tubo ondulado 7 bobinado a partir de la banda interior 4 aproximadamente lisa y la banda exterior 2 ondulada sea flexible.Controlled folding slots 16 guarantee that the wavy tube 7 wound from the inner band 4 approximately smooth and the outer band 2 wavy be flexible.
Al flexionar un tubo ondulado 7 bobinado, conforme a la flexión, las ranuras de doblado controlado 16 de la banda interior 4 se doblan a los valles de la banda exterior ondulada 2. Asimismo, por las ranuras de doblado controlado 16, el tubo ondulado bobinado 7 acabado puede comprimirse para su transporte, reduciendo la longitud del tubo ondulado correspondientemente. Cuanto mayor sea el número de ranuras de doblado controlado 16 del tubo interior liso 4, tanto mayor será la flexibilidad del tubo ondulado 7 flexible y el grado de compresión.When flexing a wavy tube 7 winding, subject to bending, the controlled folding slots 16 of the inner band 4 bend to the valleys of the outer band corrugated 2. Also, by the controlled folding slots 16, the 7 finished winding wavy tube can be compressed for your transport, reducing the length of the wavy tube correspondingly. The higher the number of slots of controlled bending 16 of the smooth inner tube 4, the greater the flexibility of flexible wavy tube 7 and the degree of compression.
La figura 6 muestra en vista desarrollada las bandas 2, 4 que se han de colocar una en la otra en la zona de las ondas del tubo bobinado que se han de deformar. La flecha designada por 17 indica la onda deformada precedente del tubo bobinado, la flecha designada por 18 indica la onda del tubo bobinado, que se ha de deformar, y la flecha designada por 19 indica la siguiente onda que se ha de deformar.Figure 6 shows in developed view the bands 2, 4 to be placed in each other in the area of the winding tube waves to be deformed. The designated arrow by 17 indicates the preceding deformed wave of the coiled tube, the arrow designated by 18 indicates the wave of the coiled tube, which has been to deform, and the arrow designated by 19 indicates the next wave That has to deform.
Como está representado especialmente en la figura 9, los flancos de onda 20 están comprimidos en forma de omega sobre el vértice 21 de onda, así como situado el vértice 21 de onda en la cara interior del tubo ondulado, estando enrasadas las superficies. De esta manera se evita la filtración de agua condensada en la unión en forma de omega. Por la compresión alternativa por puntos de los flancos de onda 20 con los vértices 21, la unión en forma de omega queda protegida adicionalmente.As represented especially in the Figure 9, the wave flanks 20 are compressed in the form of omega on the wave vertex 21, as well as located the vertex 21 of wave on the inside of the wavy tube, the surfaces. In this way water filtration is avoided condensed in the omega-shaped junction. By compression alternative by points of the 20 wave flanks with the vertices 21, the omega-shaped junction is further protected.
La banda interior lisa 4 puede componerse de manera ventajosa de un material muy fino resistente a la corrosión, mientras que la banda exterior ondulada 2 se compone de un material más grueso menos resistente a la corrosión, estabilizando la banda exterior ondulada 2 el tubo ondulado 7. De esta manera pueden reducirse los gastos de material.The smooth inner band 4 can be composed of advantageous way of a very fine corrosion resistant material, while the wavy outer band 2 is composed of a material thicker less corrosion resistant, stabilizing the band wavy outside 2 the wavy tube 7. This way they can reduce material costs.
Por la banda interior lisa 4, el tubo ondulado tiene una resistencia al flujo mucho menor que un tubo ondulado convencional. Además, el tubo ondulado según la invención resulta muy fácil de limpiar.On the smooth inner band 4, the wavy tube it has a much lower resistance to flow than a corrugated pipe conventional. In addition, the corrugated tube according to the invention results Very easy to clean.
Si se comprime un tubo ondulado bobinado acabado en su sentido longitudinal y, a continuación, se vuelve a extender en su sentido longitudinal, se obtiene un tubo más largo que en su interior es más liso que el tubo original no comprimido.If a finished wound corrugated pipe is compressed in its longitudinal direction and then it is extended again in its longitudinal sense, a longer tube is obtained than in its Inner is smoother than the original uncompressed tube.
\vskip1.000000\baselineskip\ vskip1.000000 \ baselineskip
Esta lista de documentos indicados por el solicitante se ha recogido exclusivamente para información del lector, y no es parte constituyente del documento de patente europeo. Ha sido recopilada con el mayor cuidado; sin embargo, la EPA no asume ninguna responsabilidad por posibles errores u omisiones.This list of documents indicated by the applicant has been collected exclusively for information from the reader, and is not a constituent part of the patent document European. It has been compiled with the greatest care; However, the EPA assumes no responsibility for possible errors or omissions
- \bullet DE 4201859 C2[0002]DE 4201859 C2 [0002]
- \bullet US 4160312 A [0004]US 4160312 A [0004]
\bullet US 3487537 A [0003]US 3487537 A [0003]
Claims (10)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004049766 | 2004-10-12 | ||
| DE102004049766A DE102004049766B3 (en) | 2004-10-12 | 2004-10-12 | Method and apparatus for producing a flexible, smooth inside corrugated pipe, and a corrugated pipe produced by the method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2298903T3 true ES2298903T3 (en) | 2008-05-16 |
Family
ID=35445829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES05021761T Active ES2298903T3 (en) | 2004-10-12 | 2005-10-06 | PROCEDURE FOR MANUFACTURING A FLEXIBLE ROLLED TUBE, READY INSIDE, AS WELL AS A ROLLED TUBE MANUFACTURED ACCORDING TO THE PROCEDURE. |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1647340B1 (en) |
| AT (1) | ATE386597T1 (en) |
| DE (2) | DE102004049766B3 (en) |
| ES (1) | ES2298903T3 (en) |
| PT (1) | PT1647340E (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009034628A1 (en) | 2009-07-24 | 2011-02-03 | Fritz Hahn Gmbh & Co Kg | Method for applying insulation on pipe, involves helically winding-up insulating tape on rotating pipe, where rotating pipe is moved according to inclination in pipe longitudinal direction |
| DE202011104565U1 (en) * | 2011-08-18 | 2012-11-19 | Witzenmann Gmbh | Winding hose with torsional fixation |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3487537A (en) * | 1965-04-06 | 1970-01-06 | Jack P Lombardi | Method for making a spiral seamed corrugated laminated pipe with uncorrugated interior |
| US3661314A (en) * | 1969-12-18 | 1972-05-09 | Alexandr Ivanovich Tselikov | Mill to produce spiral-welded double layer pipes |
| US3857159A (en) * | 1973-09-27 | 1974-12-31 | Pacific Roller Die Co Inc | Pipe forming method |
| US4160312A (en) * | 1978-01-05 | 1979-07-10 | James Nyssen | Method and apparatus for making multi-layer spiral pipe |
| US4616495A (en) * | 1982-05-27 | 1986-10-14 | Rib Loc Hong Kong Limited | Helically-formed pipe winding machine |
| DE4201859C2 (en) * | 1992-01-24 | 1997-03-06 | Hahn Fritz Gmbh Co Kg | Method and device for producing a flexible, internally smooth corrugated tube |
-
2004
- 2004-10-12 DE DE102004049766A patent/DE102004049766B3/en active Active
-
2005
- 2005-10-06 EP EP05021761A patent/EP1647340B1/en active Active
- 2005-10-06 DE DE502005002895T patent/DE502005002895D1/en active Active
- 2005-10-06 AT AT05021761T patent/ATE386597T1/en active
- 2005-10-06 PT PT05021761T patent/PT1647340E/en unknown
- 2005-10-06 ES ES05021761T patent/ES2298903T3/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE502005002895D1 (en) | 2008-04-03 |
| ATE386597T1 (en) | 2008-03-15 |
| PT1647340E (en) | 2008-06-02 |
| EP1647340A1 (en) | 2006-04-19 |
| DE102004049766B3 (en) | 2006-06-08 |
| EP1647340B1 (en) | 2008-02-20 |
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