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WO1999011964A1 - Element de tubage et son procede de fabrication - Google Patents

Element de tubage et son procede de fabrication Download PDF

Info

Publication number
WO1999011964A1
WO1999011964A1 PCT/DE1998/002607 DE9802607W WO9911964A1 WO 1999011964 A1 WO1999011964 A1 WO 1999011964A1 DE 9802607 W DE9802607 W DE 9802607W WO 9911964 A1 WO9911964 A1 WO 9911964A1
Authority
WO
WIPO (PCT)
Prior art keywords
nipple
spout
pipe
piping
piece
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.)
Ceased
Application number
PCT/DE1998/002607
Other languages
German (de)
English (en)
Inventor
Helmut Held
Albrecht Geiger
Wolfgang Kleiner
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 DE19813213A external-priority patent/DE19813213A1/de
Application filed by Individual filed Critical Individual
Priority to DE19881580T priority Critical patent/DE19881580D2/de
Priority to AU10217/99A priority patent/AU1021799A/en
Publication of WO1999011964A1 publication Critical patent/WO1999011964A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/0002—Means for connecting central heating radiators to circulation pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses
    • F16L33/30—Arrangements for connecting hoses to rigid members; Rigid hose-connectors, i.e. single members engaging both hoses comprising parts inside the hoses only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • F16L41/021—T- or cross-pieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/0002—Means for connecting central heating radiators to circulation pipes
    • F24D19/0017—Connections between supply and inlet or outlet of central heating radiators
    • F24D19/0021—Flexible tubes or hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/0002—Means for connecting central heating radiators to circulation pipes
    • F24D19/0026—Places of the inlet on the radiator

Definitions

  • the invention relates to a piece of tubing for building installation piping, in particular pipe connectors or their components as well as radiator pipes, such as. B. radiator connection elbow or components of radiator connection T-pieces made of metal.
  • Piping pieces are known in a variety of ways from building installations.
  • the heating of single-family houses, residential complexes or commercially used buildings is generally carried out using hot water circulation systems, with the circular cut parts between the hot water pipe system (preferably made of plastic pipes) and the radiator inlet and outlet being connected regularly with radiator connection elbows or radiator T-pieces.
  • the heater-side end of the connection bend and connection T-piece is designed as a metallic tube and the end provided for the connection of the plastic tube as a nipple or grommet is also made of metal. So far, these connection bends and fittings have generally been made from two parts. Namely, by joining and then connecting metallic pipe and the nipple or grommet produced as a turned part.
  • the bent pipe is inserted into the end of the nipple and then soldered together, in rare cases also welded.
  • the nipple and grommet connections are generally manufactured very cost-intensive on lathes or CNC-controlled automatic lathes with enormous material expenditure and large material losses.
  • a conventional manufacturing process involves the following steps:
  • the table shown in FIG. 6 lists problems which may arise in connection with brazing in a protective gas atmosphere and brazing with flame technology.
  • the table is divided into three main columns.
  • the name of the problem is listed in the first column. In the following two further columns, the resulting consequences and the associated consequences are given.
  • the Consequences column is divided into the three main categories of rework, additional costs and environmental impact.
  • radiator piping pieces also applies in a similar way to connecting pieces of other building installation piping. I.e. they are either made of several parts or if they are already in one piece, a machining process is necessary in order to produce the desired nipples or spouts from a blank.
  • the invention is based on the object of providing metallic piping pieces of the type described at the outset which can be produced more cost-effectively, in a resource-saving manner and with less environmental pollution.
  • the invention relates to a piping for building installation piping, in particular pipe connectors or their components and radiator piping, such as.
  • the main idea of the invention is that the grommet or the nipple is formed. In other words, the piping is made entirely from one part.
  • B. Radiator connection elbow a prepared pipe component is formed at one end according to the geometric configuration of the connection nipple or the grommet connection. This can e.g. B. by mechanical reshaping or by hydroforming.
  • radiator connection T-pieces which are provided with grommets or nipples and were previously manufactured on automatic lathes or the like.
  • the invention also relates to pipe connectors or their components which are manufactured from a previously produced malleable cast iron blank by subsequently machining it.
  • the mass remains unchanged in the case of a pipe connection piece or a component thereof manufactured according to the invention, since the existing material of a pipe piece, which serves as a raw part, is merely deformed.
  • the procedure according to the invention not only simplifies production but also reduces costs.
  • the cost minimization results, for example, from the fact that the operations described at the outset in the production of a conventional radiator piping piece 4 to 9 are dispensed with and are replaced by a single reshaping process.
  • radiator connection components there is a minimization of costs and resource conservation through a significantly lower use of materials.
  • the procedure according to the invention based on the production quantities for radiator connection components published by the Federal Statistical Office in Wiesbaden for 1996 would have a material saving of approx. 2000 t of steel for a steel or stainless steel version or approx. 1000 t of copper or brass for a copper and brass version result. Additional cost savings and, above all, energy savings result from the elimination of heat-energy-intensive soldering processes.
  • the process reliability with regard to the tightness of the parts increases, which is the most important functional feature of radiator connection components.
  • connection components are preferably installed under plaster, the smallest possible leaks at the connection point (soldering point or welding point) are caused, for example, by the finest capillary errors, with very costly water damage in the affected areas Connected buildings. Finally, environmental pollution is reduced by eliminating aggressive, acidic fluxes. This also has further cost advantages.
  • At least one preferably annular protuberance is formed on the spout or the nipple.
  • At least one protuberance have a plateau-like flattening on the outside.
  • the tip area of the protuberance can subsequently be formed into a plateau.
  • a flattening is preferably by mechanical post-deformation such.
  • At least one protuberance is sawtooth-shaped in cross section.
  • the sharp edge of the sawtooth not only ensures a good sealing function against a pushed-on plastic tube or tube, but also prevents the plastic tube or tube from slipping off the nipple or spout
  • a stop collar is formed on the spout or the nipple.
  • the grommet or the nipple has a ring element in the area of the stop collar or instead of the stop collar.
  • the collar function not only consists in forming a stop for a plastic tube or a plastic hose, but also to provide a support point for a tool with which, for example, a plastic hose or a plastic tube can be pulled onto the spout or the nipple.
  • the ring element can be easily adapted to different tool types. In order to give the ring element a firm fit on the radiator piping piece, it is preferably integrated into the forming process for producing the spout in such a way that it is partially enclosed by the deformed spout geometry.
  • the forming according to the invention can be carried out by internal high pressure forming. Such a forming process is described below by way of example.
  • the forming tool is loaded with the workpiece to be machined and sealed or sealed using presses and / or horizontal cylinders.
  • a suitable pressure medium is then applied to the forming tool.
  • a counter holder for the pressure forming is retracted in a controlled manner in order to achieve the desired shape.
  • the workpiece is relieved of pressure or relaxed, the pressure medium is removed and the forming tool is opened when the workpiece is ejected.
  • the shaping of the grommets or nipples can, however, also be achieved by mechanical pipe end forming.
  • An additional aspect of the invention is thus to design the mechanical pipe end forming such that a structure in the form of nipples or grommets can be produced.
  • the pipes to be machined are clamped in a vice with two half-shells, whereby the pipe end is exposed in the direction of the working axis.
  • the forming is now carried out in several forming operations with internal mandrels, outer sleeves, flanges and combinations thereof. During the deformation process, the pipe is expanded, then drawn in or pressed axially against the vice.
  • the tool sequences are matched to one another so that the desired final shape of the tube is achieved without exceeding the maximum stretchability of the tube.
  • several successive flanges or Cross-sectional changes as in the present case for the manufacture of spouts or nipples, require further intermediate clamps against which the flanges can be pressed. Intermediate clamping can take place either by means of further clamping pieces or by reclamping the tool.
  • workpiece transfer after each processing stage is also possible with straight tubes, the number of clamping tools required corresponding to the number of forming tools. This measure significantly shortens cycle times.
  • FIG. 1 shows a radiator connection bend according to the invention with an integrally formed nipple or grommet in a sectional view
  • connection component 3 shows a connection component according to the invention with molded nipples or grommets for a radiator connection T-piece in a sectional view
  • Fig. 4 is a molded nipple according to the invention with an integrated washer and
  • Fig. 5 shows a T-fitting according to the invention for the building water supply.
  • Fig. 1 shows a radiator connection bend 1 which was produced in one piece according to the invention.
  • the nipple 2 with the stop collar 3 was formed, for example, by mechanical reshaping.
  • An enlarged representation of a wall section in the area of section 2 is shown in FIG Fig. 2 can be seen.
  • a plastic tube can be pushed onto the nipple 2, which is held and sealed by means of the annular protuberances 4.
  • connection component 3 shows a connection component according to the invention for a radiator connection T-piece.
  • This has molded-on connecting nipples 5, 6 at both ends, which, like in the first exemplary embodiment, serve to receive a plastic hose or tube.
  • a special feature of this connection component is, however, that a protuberance 7 is also formed. After forming, this can be opened, for example, by mechanical necking in a subsequent process step in order to be able to accommodate a piece of pipe. So far, such connection components have also been produced in one piece, but as a turned part with an enormous amount of material and labor. By means of the procedure according to the invention, this connection component can now be produced in one piece from a conventional metal tube, which is associated with a significantly lower material expenditure.
  • the nipple 8 preferably has annular protuberances 10, the rounded outer contour of which is flattened like a plateau. At the transition points 11, 12 of a plateau 13 to the originally molded protuberance, there is in each case an edge whose notch effect on a pushed-on plastic hose or a pushed-on plastic tube leads to a particularly tight connection.
  • the plastic hose (not shown) is z. B. pulled with a tool on the nipple against a first stop collar 14. So that the tool can be supported on the radiator tube during this process, an annular disk 15 is arranged behind the stop collar 14 in addition to the stop collar 14.
  • the washer was in the Forming process involved, whereby it is partially enclosed on both sides 16, 17 by the nipple geometry and thus has a tight fit.
  • the T-fitting 20 has two opposite nipples 21, 22 on a basic component 23.
  • a third nipple 24 is arranged centrally in the basic component 23 between the nipples 21, 22.
  • the basic component 23 and the nipples 21, 22 were produced from a tubular body by a shaping step, a protuberance being provided at the point at which the third nipple 24 is located, as shown in FIG. 3.
  • This protuberance was opened after the shaping of the basic component 23, the third nipple 24, likewise produced in a shaping step, was inserted therein and, if necessary, this joint was soldered or welded.
  • the nipples 21, 22, 24 have the special feature that two sawtooth-shaped protuberances 25 are formed on the nipple surface. Due to the sharp edge 26 of the sawtooth, these not only represent a slip protection for a pushed-on plastic hose or plastic tube, but also contribute significantly to sealing the hose or tube with respect to the T-fitting.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

L'invention concerne un élément de tubage pour installations dans des bâtiments, en particulier des éléments de raccordement ou leurs composants, ainsi que des raccords de corps de chauffe, tels que coudes de raccordement ou composants de pièces en T métalliques pour raccords de corps de chauffe comprenant une douille ou une bague pour le raccordement d'un tube ou tuyau souple en matière plastique. Conformément à l'invention, la douille ou la bague sont formées d'une seule pièce avec l'élément. En outre, l'invention concerne un procédé de fabrication d'un élément de tubage, caractérisé en ce que la douille ou la bague sont fabriquées suivant un processus mécanique de formage de l'extrémité du tube.
PCT/DE1998/002607 1997-09-04 1998-09-04 Element de tubage et son procede de fabrication Ceased WO1999011964A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19881580T DE19881580D2 (de) 1997-09-04 1998-09-04 Verrohrungsstück und Verfahren zur Herstellung eines Verrohrungsstücks
AU10217/99A AU1021799A (en) 1997-09-04 1998-09-04 Tubing piece and a method for the production thereof

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19738582 1997-09-04
DE19738582.6 1997-09-04
DE19813213.1 1998-03-26
DE19813213A DE19813213A1 (de) 1997-09-04 1998-03-26 Heizkörperverrohrungsstück

Publications (1)

Publication Number Publication Date
WO1999011964A1 true WO1999011964A1 (fr) 1999-03-11

Family

ID=26039664

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/002607 Ceased WO1999011964A1 (fr) 1997-09-04 1998-09-04 Element de tubage et son procede de fabrication

Country Status (3)

Country Link
AU (1) AU1021799A (fr)
DE (1) DE19881580D2 (fr)
WO (1) WO1999011964A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004041478A1 (de) * 2004-08-27 2006-03-02 Rehau Ag + Co Einteiliger Schlauchnippel und Verfahren zur Herstellung
DE102004040348A1 (de) * 2004-08-20 2006-03-30 Daimlerchrysler Ag Schlauchverbindung
GB2587792A (en) 2019-08-16 2021-04-14 Bows Peter Improvements in single part water piping and plumbing

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003142A2 (fr) * 1978-01-16 1979-07-25 Stratoflex, Inc. Embout pour tuyaux souples et méthode d'assemblage
EP0174070A2 (fr) * 1984-07-09 1986-03-12 Stratoflex, Inc. Dispositif d'accouplement formé pour fluide
US4689868A (en) * 1984-05-24 1987-09-01 Aeroquip Corporation Beadlock wrench float fitting
EP0441174A2 (fr) * 1990-02-09 1991-08-14 Metallwarenfabrik Schelklingen GmbH Procédé et outil de formage pour refouler un nipple
US5056346A (en) * 1988-12-30 1991-10-15 Usui Kikusai Sangyo Kaisha, Limited Method and device for manufacturing bellows pipe
EP0623404A2 (fr) * 1993-04-26 1994-11-09 Robert Bosch Gmbh Tuyau, raccord de tuyau, procédé pour leur fabrication et dispositif de retenue de tuyaux
US5387016A (en) * 1994-03-29 1995-02-07 Ford Motor Company Tubular coupling
DE19647553A1 (de) * 1995-11-16 1997-05-22 Usui Kokusai Sangyo K Ltd Struktur und Verfahren zur Verbindung eines dünnen Metallrohres mit kleinem Durchmesser und eines Druckgummischlauches

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003142A2 (fr) * 1978-01-16 1979-07-25 Stratoflex, Inc. Embout pour tuyaux souples et méthode d'assemblage
US4689868A (en) * 1984-05-24 1987-09-01 Aeroquip Corporation Beadlock wrench float fitting
EP0174070A2 (fr) * 1984-07-09 1986-03-12 Stratoflex, Inc. Dispositif d'accouplement formé pour fluide
US5056346A (en) * 1988-12-30 1991-10-15 Usui Kikusai Sangyo Kaisha, Limited Method and device for manufacturing bellows pipe
EP0441174A2 (fr) * 1990-02-09 1991-08-14 Metallwarenfabrik Schelklingen GmbH Procédé et outil de formage pour refouler un nipple
EP0623404A2 (fr) * 1993-04-26 1994-11-09 Robert Bosch Gmbh Tuyau, raccord de tuyau, procédé pour leur fabrication et dispositif de retenue de tuyaux
US5387016A (en) * 1994-03-29 1995-02-07 Ford Motor Company Tubular coupling
DE19647553A1 (de) * 1995-11-16 1997-05-22 Usui Kokusai Sangyo K Ltd Struktur und Verfahren zur Verbindung eines dünnen Metallrohres mit kleinem Durchmesser und eines Druckgummischlauches

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004040348A1 (de) * 2004-08-20 2006-03-30 Daimlerchrysler Ag Schlauchverbindung
DE102004041478A1 (de) * 2004-08-27 2006-03-02 Rehau Ag + Co Einteiliger Schlauchnippel und Verfahren zur Herstellung
GB2587792A (en) 2019-08-16 2021-04-14 Bows Peter Improvements in single part water piping and plumbing

Also Published As

Publication number Publication date
AU1021799A (en) 1999-03-22
DE19881580D2 (de) 1999-12-02

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