EP3381618B1 - Moyen de pression destiné à presser une pièce de raccordement - Google Patents

Moyen de pression destiné à presser une pièce de raccordement Download PDF

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Publication number
EP3381618B1
EP3381618B1 EP18163087.2A EP18163087A EP3381618B1 EP 3381618 B1 EP3381618 B1 EP 3381618B1 EP 18163087 A EP18163087 A EP 18163087A EP 3381618 B1 EP3381618 B1 EP 3381618B1
Authority
EP
European Patent Office
Prior art keywords
pressing
fitting
elements
contour
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.)
Active
Application number
EP18163087.2A
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German (de)
English (en)
Other versions
EP3381618A1 (fr
Inventor
Reiner Mester
Jörg Rosenthal
Philipp Dasbach
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.)
Viega Technology GmbH and Co KG
Original Assignee
Viega Technology 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 Viega Technology GmbH and Co KG filed Critical Viega Technology GmbH and Co KG
Publication of EP3381618A1 publication Critical patent/EP3381618A1/fr
Application granted granted Critical
Publication of EP3381618B1 publication Critical patent/EP3381618B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
    • B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
    • B25B27/10—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same inserting fittings into hoses

Definitions

  • the invention relates to a pressing means for pressing a fitting for sealing connection with a pipe, with at least two pressing elements with a receiving area for receiving a fitting with a pipe and with a pressing contour formed on the inside of the pressing elements, the pressing elements being pivotably connected to one another in an open position at the end having the pressing contour and are at a smaller distance after the end of the pressing or are in contact with one another and thereby form a closing plane and wherein the pressing contour has a pressing area for sealing pressing of the fitting, in particular a bead of a fitting having a sealing agent, and Has press webs for fixing pressing of the fitting.
  • a fitting is basically understood to be a connecting piece of a pipeline and is most commonly used to connect two or more pipe sections. Accordingly, the fitting has two or more pressing sections.
  • the most common fittings include straight connections, changes of direction in the form of pipe bends, reducers, branches such as T-pieces or crossings.
  • a fitting is also to be understood as a pipe connection of a fitting or other component. For example, thermometers or pressure gauges only have one connection for a pipe section as fittings. Thus, this fitting then has only one pressing section in order to connect a pipe section to the fitting.
  • Press connections are used to connect the pipe sections to the fittings and other components, in which a press section of a fitting is deformed radially inwards with the pipe section inserted using a press tool in such a way that a permanent and tight, possibly even non-detachable connection is produced.
  • the fittings can be provided with a sealant, for example an O-ring, which ensures the tightness of the connection, or they can also be designed with direct contact between the materials of the pipe section and the fitting, for example with a metal seal.
  • a pressing technique for a radial forming of the pressing section radially acting pressing systems are used, in which the pressing elements mentioned above are used. By pivoting the pressing elements toward one another, the material of the fitting, possibly together with sealant, and thereby also the material of the pipe, is deformed, so that a tight connection between the fitting and the pipe that is secure against being pulled out is formed.
  • EP 1 547 728 A1 describes a jaw of a crimping tool for connecting tubes, wherein a marker for indicating the connection status of tubes is destroyed to thereby signal the crimped condition of a tube connection.
  • KR 2012 0113824 A discloses a compression tool for connecting pipe joints, wherein the contact surface of the compression tool is contoured.
  • the pipe systems described in general above serve in particular to transport drinking water or heating water, gas for operating a heating system or industrial gases.
  • the closing plane of the pressing elements is understood to mean the plane in which the two open ends of the pressing elements abut one another after the conclusion of a pressing process or are at least arranged adjacent thereto.
  • no material of the fitting is radially pressed at the beginning of the pressing process because of the distance between the ends of the pressing elements.
  • material of the fitting is pressed into the open area of the closing plane, ie in the circumferential direction of the fitting. Due to the geometry of the pressing elements and the movement sequence, most of the material is formed in the area of the closing plane, so that the pipe pressed by the fitting is also exposed to particular stress in this area. Therefore, in the area of the closing plane, the above-mentioned buckling often occurs.
  • the present invention is therefore based on the technical problem of improving the pressing of fittings with thin-walled metal pipes.
  • a selective, stronger deformation is introduced into the connection between the fitting and the pipe during pressing.
  • the deformation preferably lies outside the area close to the closing plane, which is critical for the formation of bulges.
  • the bursting pressure strength is thus increased without affecting the critical area for buckling.
  • the at least one cam is arranged in an angular range of more than 90° to the closing plane, with the central axis of the pressing contour forming the vertex of the angle measurement and one leg of the angle resting on the end of the pressing element. This ensures that the at least one cam is positioned at a sufficient angular distance from the closing plane and does not load the area of the closing plane.
  • both pressing webs of both pressing elements each have at least one cam.
  • a total of at least four cams are provided, which are distributed evenly and are preferably arranged at a distance from the closing plane. This further improves the bursting strength.
  • At least one pressing web preferably all pressing webs, have a radial expansion in an angular range between 10° and 90° to the closing plane.
  • the pressing elements form a pressing loop of a pressing tool.
  • the press sling is used for pipes with larger diameters and is placed around the not yet pressed fitting before pressing.
  • the pressing elements are each connected to one another at one end by means of an axis of rotation and form a distance from one another at the other free end in the open position. These ends thus delimit the closing plane from both sides.
  • the free ends point Coupling means mostly in the form of depressions, engage in the corresponding coupling means of a pressing tool.
  • the free ends of the press sling are pressed together by means of the coupling means driven by a press tool, as a result of which the fitting and the pipe are deformed.
  • the pressing elements form a pressing jaw of a pressing tool.
  • two pressing elements of a pressing jaw can be pivoted about at least one axis by means of holding elements, are provided with the pressing contour at one end and with an inlet contour at the other end.
  • the ends of the holding elements with the inlet contour are pushed apart by means of a feed piston of a pressing machine, so that the other ends close with the pressing contour and bring about the pressing process.
  • FIG 1 shows a first (upper) pressing element 4 in a partially sectioned view
  • FIG 2 represents a second (lower) pressing element 6 in a side view.
  • the press sling 2 thus has the two press elements 4 and 6, both of which have a receiving area 8 for receiving a fitting with a pipe.
  • the receiving area 8 defines an axial direction perpendicular to the plane of the drawing, which essentially corresponds to the axis of the fitting to be pressed and the pipe received by the fitting.
  • the receiving area is essentially round in sections in order to receive the fitting to be pressed with the pipe.
  • a pressing contour 10 is formed on the inside of the pressing elements 4 and 6 and surrounds the receiving area 8 radially outwards.
  • the pressing contour 10 is in particular in 3 to recognize.
  • the pressing elements 4 and 6 can be connected to one another in a pivotable manner and, for this purpose, each have a bore 16 or 18 at one end 12 or 14, in which, in the assembled state, an axis of rotation (not shown) is arranged. In an open position, the pressing elements 4 and 6 are spaced apart at the ends 20 and 22 and have a smaller spacing or abut one another after the pressing has been completed. Thus, the ends 20 and 22 define a closure plane 24 between them.
  • the pressing contour 12 has the negative shape of the outer shape to be assumed by the fitting after pressing.
  • the central section 26 of the pressing contour 10 is recessed in order to receive and press the bead of a fitting.
  • the peripheral edges 28 and 30 of the central section 12 run obliquely, resulting overall in a substantially trapezoidal inner contour.
  • axially aligned cylindrical sections 32 and 34 join central section 12 .
  • the sections 32 and 34 are not in contact with the fitting during pressing and therefore do not lead to a deformation of the fitting.
  • the pressing contour 12 thus forms on the inside a pressing region 26, 28 and 30 running in the axial direction for pressing a bead of a fitting that has a sealing agent, as explained further below with reference to FIG Figures 5 to 8 is explained.
  • the pressing contour 12 has pressing webs 36 and 38 on both sides of the pressing area described above.
  • the pressing webs 36 and 38 primarily serve to reshape the fitting with a view to fixing the fitting on the pipe to be pressed.
  • the pressing webs 36 and 38 each have a cam 40 and 42, respectively, which is directed radially inwards and leads to a selective additional depression of the fitting in the direction of the pipe. These additional indentations then lead to increased pull-out or bursting pressure resistance.
  • the outer flank of the cam 42 is bevelled, resulting in a shape tapering to a point inwards.
  • the inner flank of the cam 42 can also be beveled.
  • the cams 40 and 42 are arranged at an angle of more than 90° to the closing plane 24, the angle ⁇ being measured in such a way that the vertex of the angle ⁇ coincides with the axis A. This ensures that the position of the cams 40 and 42 is at a sufficient distance from the closing plane 24 .
  • the pressing webs 36 and 38 of both pressing elements 4 and 6 each have a cam 40 and 42, respectively. This means that an additional indentation is made at four different positions when the fitting is pressed.
  • the press webs 36 and 38 have a radial extension 44 or 46 in an angular range ⁇ between 10° and 90° to the closing plane 24, as can be seen from the distance to the dashed lines in FIGS Figures 1 and 2 results.
  • These radial extensions 44 and 46 lead to the slope of the pressing webs 36 and 38 in the area of the closing plane 24 being steeper than in the case of a round shape, preferably even running almost tangentially to the outer shape of the fitting Figures 1 and 2 almost vertical.
  • the radial expansions 44 and 46 the deformation of the fitting that takes place in the circumferential direction of the fitting is weakened or largely avoided when the fitting is pressed.
  • the Figures 1 to 4 show pressing elements 4 and 6 for a pressing means in the form of a press loop 2 of a pressing tool.
  • the composite press sling 2 is in the Figures 5 to 8 shown with a fitting 52 inserted and a tube 54 inserted therein.
  • the two pressing elements 4 and 6 are connected to one another at the ends 12 and 14 by means of an axis of rotation 56 and form a distance from one another at the other ends 20 and 22 in the open position, as in FIGS figure 5 and 6 is shown.
  • the fitting 52 into which the pipe 54 to be connected is pushed up to a stop 58 , is arranged between the two pressing elements 4 and 6 .
  • the fitting 52 has a bead 60 for receiving an O-ring 62 .
  • the two ends 20 and 22 each have a depression 64 and 66 on the outer sides, in which corresponding coupling means of a pressing tool can engage and the two ends 20 and 22 can be pressed towards one another.
  • the 7 and 8th show the arrangement after pressing.
  • the reshaping 67 caused by the pressing webs 36 and 38 can be seen all around the inside.
  • the cams 40 of the webs 36 have penetrated further into the material of the fitting 52, so that the tube 54 has also been more strongly deformed at this point.
  • position 68 can be seen in cross-section in the upper half, with the lower half showing position 70 in perspective.
  • the lower half shows that the webs 38 cause only a smaller deformation of the fitting 52 than is the case for the cams 40 .
  • the bead 60 has been deformed inwardly and the o-ring 62 has been compressed.
  • FIG. 9 shows a second embodiment of a pressing means in the form of a pressing jaw 80, which is part of a pressing tool.
  • the two pressing elements 4 and 6 are arranged to be pivotable about two axes 86 and 88 by means of laterally attached holding elements 84 .
  • the pressing elements 4 and 6 have a pressing contour 10 which is designed in the same way as has been described above.
  • cams 40 and 42 and radial extensions 44 and 46 are present.
  • the pressing elements 4 and 6 are provided with an inlet contour 90 at the ends 12 and 14 .
  • a pressing tool with a feed means can thus press the two ends 12 and 14 apart in order to thus press the ends 20 and 22 together with the pressing contour 10 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Press Drives And Press Lines (AREA)

Claims (5)

  1. Moyen de pressage pour le pressage d'un raccord pour la liaison étanche avec un tube,
    - avec au moins deux éléments de pressage (4, 6) avec une zone de réception pour recevoir un raccord avec un tube et
    - avec un contour de pressage (10) formé sur le côté intérieur des éléments de pressage (4, 6),
    - où les éléments de pressage (4, 6) sont reliés entre eux de manière pivotante, sont espacés, dans une position ouverte, à l'extrémité (20, 22) présentant le contour de pressage, et présentent un espacement plus faible après la fin du pressage ou s'appliquent l'un contre l'autre et formant alors un plan de fermeture (24),
    - où le contour de pressage (10) présente une zone de pressage (26, 28, 30) pour le pressage étanche du raccord, et des traverses de pressage (36, 38) pour le pressage fixant du raccord, et
    - où au moins une traverse de pressage (36, 38) de l'un des éléments de pressage (4, 6) présente une protubérance (40, 42) s'étendant radialement vers l'intérieur,
    caractérisé
    - en ce que l'au moins une protubérance (40, 42) est disposée dans une plage angulaire (a) de plus de 90° par rapport au plan de fermeture (24), et
    - en ce que toutes les protubérances (40, 42) sont positionnées dans une plage angulaire (a) de plus de 90° par rapport au plan de fermeture (24).
  2. Moyen de pressage selon la revendication 1,
    caractérisé
    en ce que les deux traverses de pressage (36, 38) des deux éléments de pressage (4, 6) présentent chacune au moins une protubérance (40, 42).
  3. Moyen de pressage selon la revendication 1 ou 2,
    caractérisé
    en ce qu'au moins une traverse de pressage (36, 38), de préférence toutes les traverses de pressage (36, 38), présentent un élargissement radial (44, 46) dans une plage angulaire (β) comprise entre 10° et 90° par rapport au plan de fermeture (24).
  4. Moyen de pressage selon l'une des revendications 1 à 3,
    caractérisé
    - en ce que les éléments de pressage (4, 6) forment une boucle de pressage (2) d'un outil de pressage et
    - en ce que les éléments de pressage (4, 6), à une extrémité respective (12, 14), sont reliés entre eux au moyen d'un axe de rotation (56), et, à l'autre extrémité (20, 22), forment un espacement entre eux dans la position ouverte.
  5. Moyen de pressage selon l'une des revendications 1 à 3,
    caractérisé
    - en ce que les éléments de pressage (4, 6) forment une joue de pressage (80) d'un outil de pressage, et
    - en ce que les éléments de pressage (4, 6) peuvent pivoter autour d'au moins un axe (86, 86) au moyen d'éléments de retenue (84), sont pourvus du contour de pressage (10) à une extrémité (20, 22) et d'un contour d'entrée (90) à l'autre extrémité (12, 14).
EP18163087.2A 2017-03-29 2018-03-21 Moyen de pression destiné à presser une pièce de raccordement Active EP3381618B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017106744.2A DE102017106744A1 (de) 2017-03-29 2017-03-29 Pressmittel zum Verpressen eines Fittings

Publications (2)

Publication Number Publication Date
EP3381618A1 EP3381618A1 (fr) 2018-10-03
EP3381618B1 true EP3381618B1 (fr) 2022-01-26

Family

ID=61731689

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18163087.2A Active EP3381618B1 (fr) 2017-03-29 2018-03-21 Moyen de pression destiné à presser une pièce de raccordement

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Country Link
EP (1) EP3381618B1 (fr)
AU (1) AU2018202127B2 (fr)
DE (1) DE102017106744A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3600776B1 (fr) * 2017-09-04 2022-07-20 Rothenberger AG Matrice de pressage pour un outil de presse pour le pressage de sections tubulaires de pièces à usiner
DE102017120327A1 (de) * 2017-09-04 2019-03-07 Rothenberger Ag Pressmatrize für ein Presswerkzeug zum Verpressen von rundrohrförmigen Werkstückabschnitten, Presswerkzeug, Verfahren zur Herstellung einer Pressverbindung sowie Verfahren zur Herstellung einer Pressmatrize
EP4059629A1 (fr) * 2021-03-17 2022-09-21 Viega Technology GmbH & Co. KG Mâchoire de presse, mâchoire de presse d'entraînement, insert de presse et système pour une compression des raccords avec des tubes

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2725280A1 (de) * 1977-06-01 1978-12-14 Mannesmann Roehren Werke Ag Rohrverbindung fuer leitungsrohre
JPH0259130A (ja) * 1988-07-13 1990-02-28 Mie Horo Kk 管材の接合方法
DE10236848C5 (de) * 2002-08-10 2016-06-02 Gustav Klauke Gmbh Pressbacke oder Presskette für ein hydraulisches oder mechanisches Verpressgerät
DE10319376B4 (de) * 2003-04-30 2007-01-04 Uponor Innovation Ab Pressbacke für ein Presswerkzeug zum Verpressen von Fittingen, Presswerkzeug und Werkzeug zum axialen Aufschieben einer Hülse
FR2864602B1 (fr) * 2003-12-24 2007-07-13 Comap Machoire de sertissage
KR20120113824A (ko) * 2011-04-04 2012-10-16 배승범 파이프 이음용 압착기의 인서트구조
EP3100827B1 (fr) * 2015-06-02 2021-01-20 Geberit International AG Système de levier de presse doté d'un levier de presse et d'une mâchoire de presse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP3381618A1 (fr) 2018-10-03
AU2018202127A1 (en) 2018-10-18
AU2018202127B2 (en) 2019-10-17
DE102017106744A1 (de) 2018-10-04

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