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WO2024234028A1 - Système de raccordement et outil de compression pour un système de raccordement - Google Patents

Système de raccordement et outil de compression pour un système de raccordement Download PDF

Info

Publication number
WO2024234028A1
WO2024234028A1 PCT/AT2024/060206 AT2024060206W WO2024234028A1 WO 2024234028 A1 WO2024234028 A1 WO 2024234028A1 AT 2024060206 W AT2024060206 W AT 2024060206W WO 2024234028 A1 WO2024234028 A1 WO 2024234028A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
connection
press
section
fluid line
Prior art date
Application number
PCT/AT2024/060206
Other languages
German (de)
English (en)
Inventor
Marvin RIST
Original Assignee
Henn Gmbh & 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 Henn Gmbh & Co Kg. filed Critical Henn Gmbh & Co Kg.
Publication of WO2024234028A1 publication Critical patent/WO2024234028A1/fr

Links

Classifications

    • 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
    • F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
    • F16L13/14—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/141—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside
    • F16L13/143—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside with a sealing element placed around the male part before crimping or rolling
    • 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
    • F16L33/20—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members
    • F16L33/207—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose
    • F16L33/2071—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member
    • F16L33/2073—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member
    • F16L33/2076—Undivided rings, sleeves, or like members contracted on the hose or expanded inside the hose by means of tools; Arrangements using such members only a sleeve being contracted on the hose the sleeve being a separate connecting member directly connected to the rigid member by plastic deformation
    • 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
    • F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
    • F16L13/14—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L2013/145—Tools specially adapted therefor

Definitions

  • the invention relates to a connection system for connecting a first fluid line to a second fluid line, wherein the connection system has a connection sleeve with an open first connection sleeve end and an open second connection sleeve end connected to the first connection sleeve end, wherein a first connection section is provided on the connection sleeve, onto which the first fluid line can be pushed in order to connect the first fluid line to the first connection sleeve end of the connection sleeve and wherein the second connection sleeve end comprises a second connection section for connection to the second fluid line. Furthermore, the invention relates to a use of the connection system and a pressing tool for carrying out a connection process with the connection system.
  • connection sleeve is usually provided, which can be connected at one end to a first fluid line, preferably a plastic pipe.
  • a second fluid line e.g. again a plastic pipe, for example using a suitable connector or a suitable coupling.
  • the connection to the first fluid line is usually fixed, i.e. once the connection has been made, it cannot be removed as intended.
  • the connection to the other fluid line can be fixed or removable depending on the specific application.
  • WO 2013/189740 A2 shows a generic connection system in which the connection to the first fluid line is made by means of a clamping sleeve that is elastically deformable in sections.
  • connection system that is simple in design, can be produced inexpensively and that enables a reliable connection even with pipes of relatively low quality.
  • a further object was to provide a provide suitable tools to perform a connection operation with the connection system.
  • the connection system comprises a press sleeve, wherein the press sleeve can be arranged on the connection sleeve in such a way that it surrounds the receiving section and that a receiving space for receiving an end section of the first fluid line is formed in the radial direction between the receiving section and an inner circumferential surface of the press sleeve, wherein the press sleeve is designed to be plastically deformed in the circumferential direction in the region between two holding projections in the radial direction with a pressing tool in order to fix the first fluid line to the first connection section in a rotationally secured manner.
  • an anti-twisting device can be achieved by the plastically deformed deformation areas of the press sleeve interacting with the retaining projections of the connecting sleeve in an essentially form-fitting manner.
  • At least one of the retaining projections of the connecting sleeve is elongated and extends at least over half the length of the receiving section.
  • the plurality of retaining projections comprise at least two, preferably at least four, particularly preferably at least six, in particular at least eight retaining projections.
  • the retaining projections are distributed evenly in the circumferential direction on the receiving section. This achieves improved protection against rotation because the press sleeve can interact with the retaining projections over a greater length.
  • a circumferential groove is provided between the receiving section and the first connecting sleeve end of the connecting sleeve, in which a seal, preferably an O-ring or a molded seal, can be arranged or is arranged.
  • a seal preferably an O-ring or a molded seal
  • a centering section for centering the first fluid line can be provided at the first connecting sleeve end of the connecting sleeve. This can simplify the sliding on of the first fluid line.
  • An extension section preferably conical or curved, tapering in the direction of the first connection sleeve end can be provided between the receiving section and the first connection sleeve end of the connection sleeve, wherein the extension section is preferably arranged between the centering section and the circumferential groove.
  • the connecting sleeve is made of a plastic, with the retaining projections being formed integrally with the connecting sleeve. This enables simple and cost-effective production.
  • a limiting section can be provided between the receiving section and the second connecting sleeve end of the connecting sleeve, which forms a stop for the first fluid line.
  • the limiting section preferably comprises a circumferential shoulder with a first end face facing the first connecting sleeve end and an opposite second end face facing the second connecting sleeve end, wherein the retaining projections are preferably connected to the circumferential shoulder. This can prevent the first fluid line from being pushed on too far and ensure correct positioning of the first fluid line.
  • the circumferential shoulder can comprise at least one fastening recess which extends in the circumferential direction over a part of the circumferential shoulder, connects the first end face to the second end face and is preferably open to the outside in the radial direction, and the compression sleeve can have at least one fastening tab on a compression sleeve end facing the second connection sleeve end, which in the assembled state extends through the at least one fastening recess of the circumferential shoulder in the direction of the second connection sleeve end and rests against the second end face of the circumferential shoulder.
  • a holding groove for receiving a holding tool can be provided between the limiting section, in particular the circumferential shoulder, and the second connecting sleeve end of the connecting sleeve. This allows the connecting sleeve to be held in position while the first fluid line is being pushed on. This can be advantageous in particular when pushing on over the extension section.
  • the retaining groove comprises at least one web for a rotationally secured reception of the retaining tool. This can prevent the connecting sleeve from rotating relative to the retaining tool while the first fluid line is being pushed on.
  • the press sleeve is preferably made of a metallic material, preferably aluminum. Suitable metals have good plastic deformability and high strength. In order to further improve the plastic deformability, the press sleeve can possibly have material weakenings in the deformation areas intended for deformation.
  • connection system is preferably used in that a pipe, preferably made of plastic, is pushed onto the first connection section of the connection sleeve until an end section of the first fluid line is located in the receiving space and that the press sleeve is plastically deformed in the circumferential direction in the area between two holding projections in the radial direction with a pressing tool in order to fix the first fluid line to the first connection section in a rotationally secured manner.
  • the pressing tool comprises an arrangement space for arranging the connection system, that the pressing tool has a plurality of pressing fingers which are arranged distributed in a circumferential direction around the arrangement space, and that the pressing fingers are each designed to be moved in the direction of the arrangement space and to exert a pressing force in the radial direction on the pressing sleeve of the connection system arranged in the arrangement space, by means of which the pressing sleeve can be plastically deformed in sections in the circumferential direction.
  • the pressing tool comprises a guide sleeve which surrounds the arrangement space in the circumferential direction, wherein the guide sleeve is arranged such that the Guide sleeve surrounds the press sleeve of a connection system arranged in the arrangement space, with a guide recess being provided on the guide sleeve for each press finger to guide the respective press finger.
  • This enables reliable guidance of the press fingers and can prevent undesired deformation of the press sleeve.
  • the distance between an inner circumferential surface of the guide sleeve and an outer circumferential surface of the press sleeve is as small as possible.
  • the guide sleeve could lie directly against the press sleeve.
  • the guide sleeve could also be exchangeable if necessary, so that a suitable guide sleeve can be arranged in the pressing tool depending on the diameter of the press sleeve.
  • the pressing tool preferably comprises a force generating device for generating the pressing force and a control unit for controlling the force generating device. This allows the connection process to be carried out at least partially automatically.
  • Fig. 1 shows a connection system of an advantageous embodiment in an exploded view
  • Fig. 2 the connection system with mounted press sleeve in a perspective view
  • Fig. 3 the connection system with a connected first fluid line in a perspective view
  • Fig. 4 the connection system before pushing on the first fluid line in a longitudinal section
  • Fig. 5 the connection system after pushing on the first fluid line in a longitudinal section
  • Fig. 6 the connection system with connected first fluid line in a longitudinal section
  • Fig. 7 shows a pressing tool for carrying out a connection process with the connection system in a perspective view
  • Fig. 8 the pressing tool in a sectional view.
  • connection system of an advantageous embodiment of the invention is shown in an exploded view.
  • the connection system is designed to connect a first fluid line 2 to a second fluid line.
  • the first fluid line 2 is shown in Fig. 3.
  • the second fluid line is not shown in the figures for the sake of simplicity.
  • connection system comprises a connection sleeve 1 with an open first connection sleeve end 3 and an open second connection sleeve end 4.
  • the first connection sleeve end 3 is connected to the second connection sleeve end 4 via a flow channel.
  • a first connection section VI is provided on the connection sleeve 1, onto which the first fluid line 2 can be pushed in order to connect the first fluid line 2 to the first connection sleeve end 3 of the connection sleeve 1.
  • the second connection sleeve end 4 comprises a second connection section V2 for connection to the second fluid line (not shown).
  • VDA Association of the Automotive Industry
  • the insert sleeve forms the second fluid line.
  • the insert sleeve can be detachably connected to the connection sleeve 1.
  • the insert sleeve can in turn be connected, for example firmly, to another fluid line.
  • the structural design of the second connection section V2 is of course only to be understood as an example.
  • the concrete design of the second connection from section V2 can vary depending on the second fluid line to be connected.
  • the connecting sleeve 1 is designed to be straight, with the first connecting sleeve end 3 and the second connecting sleeve end 4 being connected by means of a straight flow channel.
  • the connecting sleeve 1 could also be curved, with the first connecting sleeve end 3 and the second connecting sleeve end 4 being arranged at a certain opening angle to one another and connected via a curved flow channel.
  • the connecting sleeve 1 can also be designed to be angled, with the first connecting sleeve end 3 and the second connecting sleeve end 4 being arranged at a certain opening angle to one another.
  • the flow channel can comprise two straight channel sections that are positioned one above the other at an opening angle.
  • the first connecting section VI of the connecting sleeve 1 comprises a cylindrical receiving section 5.
  • a plurality of retaining projections 6 are provided, which are spaced apart from one another in the circumferential direction.
  • the retaining projections 6 each extend over at least part of a length of the receiving section 5.
  • the retaining projections 6 each protrude outwards in the radial direction from the outer circumferential surface of the receiving section 5.
  • the retaining projections 6 can, for example, be elongated and preferably extend at least over half the length of the receiving section 5, preferably over the entire length.
  • the retaining projections 6 can each have a contact surface 6a facing outwards in the radial direction. When the first fluid line 2 is pushed on, the contact surfaces 6a of the retaining projections 6 can contact an inner circumferential surface of the first fluid line 2.
  • the contact surfaces 6a can be flat or they can also be rounded in the circumferential direction in order to better fit the first fluid line 2.
  • the plurality of retaining projections 6 comprise at least two retaining projections 6. However, it may be advantageous if at least four, preferably at least six, in particular at least eight retaining projections 6 are provided.
  • the illustrated embodiment of the connecting sleeve 1 comprises, for example, four retaining projections 6.
  • the retaining projections 6 are preferably arranged uniformly in the circumferential direction on the receiving section 5 distributed. Of course, an uneven distribution would also be conceivable in principle. If the connecting sleeve 1 is made of a suitable plastic, then the holding projections 6 can advantageously be formed integrally with the connecting sleeve 1.
  • the connection system further comprises a press sleeve 13, which can be arranged, preferably fastened, to the connection sleeve 1.
  • the press sleeve 13 is shown in Fig. 1 in the unassembled state and in Fig. 2 in the assembled state on the connection sleeve 1.
  • the press sleeve 13 can be arranged on the connection sleeve 1 in such a way that it surrounds the receiving section 5 and that a receiving space AR for receiving an end section of the first fluid line 2 is formed in the radial direction between the receiving section 5 of the connection sleeve 1 and an inner circumferential surface of the press sleeve 13, as can be seen in Fig. 4.
  • the press sleeve 13 is essentially cylindrical.
  • a length of the press sleeve 13 is preferably at least the length of the receiving section 5.
  • the press sleeve 13 is designed to be plastically deformed in the circumferential direction in the area between two holding projections 6 in the radial direction using a suitable pressing tool (not shown) in order to fix the first fluid line 2 to the first connection section VI in a rotationally secured manner.
  • a pressing tool of an advantageous embodiment is described in more detail later with reference to Fig.7+Fig.8.
  • Fig.3 shows the connection system with a connected first fluid line 2.
  • the deformation areas 25 at which the press sleeve 13 was plastically deformed by the pressing tool are shown in Fig.3.
  • the press sleeve 13 is preferably made of a sufficiently deformable metallic material with sufficiently high strength, for example aluminum. If necessary, the press sleeve 13 could also have a material weakening in the area of the deformation areas 25 in order to improve the plastic deformability.
  • connection system for connecting the first fluid line 2 is described with reference to Fig.4 to Fig.6.
  • the first fluid line 2 preferably a plastic pipe
  • the first fluid line 2 can be pushed over the first connection sleeve end 3 onto the first connection section VI of the connection sleeve 1, as indicated in Fig.4 by the corresponding arrow.
  • a centering section 8 for centering the first fluid line 2 can be provided.
  • the centering section 8 is also visible in Fig.l.
  • the first fluid line 2 can be pushed on until an end section of the first fluid line 2 is received in the receiving space AR formed between the press sleeve 13 and the receiving section 5 and the press sleeve 13 surrounds the end section of the first fluid line 2, as can be seen in Fig.5.
  • a limiting section can be provided between the receiving section 5 and the second connecting sleeve end 4 of the connecting sleeve 1, which forms a stop for the first fluid line 2.
  • the limiting section can, for example, comprise a peripheral shoulder 10 with a first end face 10a facing the first connecting sleeve end 3 (see Fig. 1) and an opposite second end face 10b facing the second connecting sleeve end 4 (see Fig. 2 + Fig. 4 + Fig. 5).
  • the first fluid line 2 can in this case be pushed onto the first connecting section VI until an end face of the first fluid line 2 facing the second connecting sleeve end 4 rests against the first end face 10a of the peripheral shoulder 10.
  • the holding projections 6 can be connected to the peripheral shoulder 10 in the direction of the second connecting sleeve end 4, as can also be seen in Fig. 1.
  • One or more fastening recesses 11 for fastening the press sleeve 13 can also be provided on the peripheral shoulder 10.
  • the fastening recesses 11 each extend in the circumferential direction over a part of the peripheral shoulder 10 and connect the first end face 10a of the peripheral shoulder 10 to the second end face 10b.
  • the fastening recesses 11 can also be open to the outside in the radial direction, as can be seen in Fig. 1. This can be advantageous in order to facilitate assembly. In principle, however, the fastening recesses 11 could also have a closed circumference and thus be limited in the radial direction to the outside by the peripheral shoulder 10.
  • the compression sleeve 13 can have one or more deformable fastening tabs 14 on a compression sleeve end 13a facing the second connection sleeve end 4, as shown in Fig. 1.
  • the compression sleeve 13 can be fastened to the connection sleeve 1 in that the fastening tabs 14 each extend through a fastening recess 11 of the peripheral shoulder 10 in the direction of the second connection sleeve end 4 and on the second end face 10b of the circumferential shoulder 10. This can be seen in Fig.2+Fig.3.
  • the number of fastening tabs 14 can be, for example, at least two, preferably at least four.
  • the fastening tabs 14 can, for example, be arranged evenly distributed in the circumferential direction on the press sleeve 13.
  • the number of fastening tabs 14 can, for example, correspond to the number of fastening recesses 11 of the circumferential shoulder 10.
  • the press sleeve 13 can, for example, be pre-assembled on the connecting sleeve 1.
  • the press sleeve 13 can be pushed onto the first connecting section VI with undeformed fastening tabs 14 (see Fig. 1), i.e. fastening tabs 14 running parallel to an axis of the press sleeve 13, until the press sleeve end 13a of the press sleeve 13 facing the second connecting sleeve end 4 rests on the first end face 10a of the circumferential shoulder 10.
  • the undeformed fastening tabs 14 each extend parallel to a central axis of the connecting sleeve 1 through the fastening recesses 11.
  • fastening tabs 14 can be bent inwards until end sections of the fastening tabs 14 rest on the second end face 10b of the circumferential shoulder 10, as can be seen in Fig. 2 + Fig. 3. This allows the press sleeve 13 to be fixed to the connecting sleeve 1 in a form-fitting and essentially captive manner.
  • a suitable tool (not shown) can be used.
  • an extension section 9 which tapers in the direction of the first connecting sleeve end 3 and is preferably conical or curved, can be provided (see Fig. 1 + Fig. 4).
  • the first fluid line 2 can be pushed over the extension section 9 onto the receiving section 5. This widens the first fluid line 2 and fits very tightly against the receiving section 5, in particular against the contact surfaces 6a of the holding projections 6.
  • the first fluid line 2 should of course have sufficiently large plastic or elastic deformability for this purpose. “Curved” can mean that the outer peripheral surface of the extension runs in an arc shape from section 9, with the arc either running radially outwards (convex) or inwards (concave).
  • At least one retaining groove 12 is provided for receiving a suitable holding tool (not shown), as shown in Fig.1, Fig.3 & Fig.4.
  • the retaining groove 12 can extend in the circumferential direction over part of the circumference of the connecting sleeve 1, preferably around the entire circumference.
  • the holding groove 12 comprises at least one web 26 for a rotationally secured reception of the holding tool.
  • the holding groove 12 is divided into two holding grooves, for example by two diametrically opposed webs 26.
  • One of the two webs 26 can be seen in Fig.3.
  • the webs 26 can prevent the connecting sleeve 1 from rotating while the first fluid line 2 is being pushed on.
  • the webs 26 can also be advantageous for giving the connecting sleeve 1 greater rigidity.
  • a circumferential groove 7 is provided between the receiving section 5 and the first connecting sleeve end 3, in which a suitable seal 15, preferably an O-ring or a molded seal, can be arranged or is arranged.
  • a suitable seal 15 preferably an O-ring or a molded seal
  • the seal 15 can be seen in Fig. 4 to Fig. 6.
  • the extension section 9 is preferably located between the centering section 8 and the circumferential groove 7.
  • the seal 15 can be used to form a seal between the first fluid line 2 and the connecting sleeve 1.
  • an O-ring has a substantially circular cross-section
  • a molded seal can also have a different cross-section, e.g. oval or square.
  • a molded seal can also have one or more sealing lips on its circumferential surface if necessary.
  • a length of the press sleeve 13 is set such that the press sleeve 13 not only surrounds the receiving section 5, but also additionally surrounds the circumferential groove 7 or in particular the seal 15 arranged therein.
  • the seal 15 can be protected from damage and contamination before the first fluid line 2 is installed.
  • the press sleeve 13 can be plastically deformed in the radial direction in the area between two retaining projections 6, as seen in the circumferential direction, using a suitable press tool (not shown in Fig.5).
  • a sufficiently large pressing force FP can be exerted on the press sleeve 13 using the press tool, as shown in Fig.5. as indicated by the two arrows. This allows the first fluid line 2 to be fixed to the first connection section VI in a way that prevents it from twisting.
  • connection system with the connected first fluid line 2 is shown in Fig. 6.
  • the press sleeve 13 is shown in the deformed state, with the deformation areas 25 created by the pressing tool being shown.
  • a diameter of the cylindrical receiving section 5 i.e. the areas between the holding projections 6
  • the first fluid line 2 can be held in an essentially form-fitting manner in the axial direction by the sections that were compressed by the press sleeve 13 in the area of the deformation areas 25. This naturally requires sufficient deformability of the first fluid line 2, which is usually the case with a plastic pipe.
  • a pressing tool 16 of an advantageous embodiment of the invention is described below with reference to Fig.7 and Fig.8.
  • the pressing tool 16 is designed to carry out the described connection process with the connection system according to the invention.
  • Fig.7 shows the pressing tool 16 in a perspective view
  • Fig.8 shows the pressing tool 16 in a sectional view.
  • the pressing tool 16 comprises a central arrangement space 17 for arranging the connection system, i.e. the connection sleeve 1 including the pressing sleeve 13, as can be seen in Fig.7.
  • the pressing tool 16 also comprises a plurality of pressing fingers 18, which are arranged distributed in a circumferential direction around the arrangement space 17.
  • the pressing fingers 18 are movable and can be moved in the direction of the arrangement space 17 (and in the opposite direction).
  • the pressing fingers 18 are each designed to exert a pressing force FP in the radial direction on the pressing sleeve 13 of the connection sleeve 1 arranged in the arrangement space 17, as indicated in Fig.8.
  • the pressing sleeve 13 can be plastically deformed in sections by the pressing force FP in order to form the deformation regions 25 (see Fig.3+Fig.6).
  • a number of pressing fingers 18 preferably corresponds to the number of retaining projections 6 of the connecting sleeve 1. This allows a simultaneous force to be applied between all retaining projections 6, whereby the pressing sleeve 13 can be stressed relatively evenly in the circumferential direction.
  • the number of Press fingers 18 are only four press fingers 18 by way of example.
  • the press fingers 18 can be arranged at constant intervals around the circumference of the arrangement space 17. In principle, however, a smaller number of press fingers 18 could also be provided. In this case, the force could be applied sequentially.
  • the connecting sleeve 1 could, for example, be rotated after each force application of the number of press fingers 18 in order to bring the number of press fingers 18 into line with a section of the press sleeve 13 that has not yet been deformed.
  • the pressing tool 16 has a guide sleeve 19 which surrounds the arrangement space 17 in the circumferential direction.
  • the connection system can be arranged in the arrangement space 17 such that the guide sleeve 19 surrounds the pressing sleeve 13, which in turn surrounds the receiving section 5 of the connecting sleeve 1.
  • a guide recess 20 is arranged on the guide sleeve 19 for each pressing finger 18, which connects an outer circumferential surface of the guide sleeve 19 to an inner circumferential surface of the guide sleeve 19.
  • the guide sleeve 19 is preferably dimensioned such that a distance between an inner circumferential surface of the guide sleeve 19 and an outer circumferential surface of the pressing sleeve 13 is as small as possible.
  • the guide sleeve 19 can rest against the pressing sleeve 13.
  • the guide recesses 20 are designed to guide the press fingers 18 in the radial direction.
  • the guide sleeve 19 can prevent undesirable deformation of the press sleeve 13 during the connection process, since the press sleeve 13 is limited in the radial direction by the guide sleeve 19. This ensures that the material of the press sleeve 13 does not give way when the force is applied, so that the press sleeve 13 cannot become wrinkled.
  • the press fingers 18 can be stabilized by the guide sleeve 19 during movement.
  • the pressing tool 16 can have, for example, a base body 23, which is essentially cylindrical in this case.
  • a number of radially extending guide recesses can be provided on a (here upper) end face 23a of the base body 23, in each of which a guide carriage 24 is movably arranged.
  • the pressing fingers 18 can be arranged on the inner ends of the guide carriage 24 in the radial direction.
  • the pressing fingers 18 can be designed, for example, as separate components that can be attached to the guide carriage 24 in a suitable manner, e.g. screwed. Of course, the pressing fingers 18 could also be formed integrally with the guide carriages 24, for example.
  • the connecting sleeve 1 (preferably including the pre-assembled press sleeve 13 and possibly with the first fluid line 2 already attached - e.g. as shown in Fig. 5) can first be inserted with the second connecting sleeve end 4 leading in an axial direction into the arrangement space 17 of the pressing tool 16.
  • the movement can take place in the direction of the front side 23a of the base body 23.
  • the free ends of the press fingers 18 are preferably in a release position outside the arrangement space 17 in the radial direction, for example in the area of the guide recesses 20 of the guide sleeve 19.
  • connecting sleeve 1 preferably including the pre-assembled press sleeve 13
  • first fluid line 2 be plugged onto the first connection section VI of the connecting sleeve 1.
  • a suitable tool (not shown) can be provided if necessary.
  • the connecting sleeve 1 can be positioned in the axial direction relative to the pressing tool 16 such that the pressing sleeve 13 is located in the area of the pressing fingers 18. Correct positioning in the axial direction can be ensured, for example, by a suitable, preferably adjustable, stop (not shown).
  • the connecting sleeve 1 can be aligned in the circumferential direction relative to the pressing tool 16 so that the available pressing fingers 18 are each located between two retaining projections 6 of the connecting sleeve 1.
  • the correct alignment can be achieved, for example, by a suitable positioning device (not shown).
  • the positioning device can, for example, have an optical marking on the pressing tool 16, which can be aligned with a marking or a feature of the connecting sleeve 1.
  • the positioning device could, however, also be designed mechanically, for example, in that a positioning projection of the connecting sleeve 1 engages with a positioning recess of the pressing tool 16.
  • the positioning device could, however, also have, for example, a suitable sensor system.
  • the pressing tool 16 can further comprise a suitable force generating device 21 for generating the pressing force FP and a control unit 22 for controlling the force generating device 21.
  • the force generating device 21 and the control unit 22 are only symbolically indicated in Fig.7 and can be designed in a suitable manner.
  • the force generating device 21 can, for example, comprise a number of suitable electrically controllable actuators, eg hydraulic cylinders, pneumatic cylinders, or the like.
  • the control unit 22 can comprise suitable hardware and/or software.
  • one or more suitable sensors for detecting a measurement of the connection process could be provided, which can communicate with the control unit 22. It would be conceivable, for example, that a position or path sensor for detecting a radial movement is provided for one or more press fingers 18. Alternatively or additionally, a suitable force sensor for detecting the pressing force FP could also be provided.
  • the control unit 22 can use the measured values recorded to control the connection process. For example, the connection process can be terminated when a predetermined pressing force FP or a predetermined position of the press fingers 18 is reached.
  • Suitable sensors, e.g. for angle measurement can also be provided to ensure a correct position of the connecting sleeve 1 in the circumferential direction relative to the pressing tool 16.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

L'invention concerne un système de raccordement pour raccorder une première conduite de fluide (2) à une deuxième conduite de fluide, ce système de raccordement comprenant une douille de raccordement (1) présentant une première extrémité de douille de raccordement (3) ouverte et une deuxième extrémité de douille de raccordement (4) ouverte, une première partie de raccordement (VI) étant prévue sur la douille de raccordement (1), la première conduite de fluide (2) pouvant être glissée sur ladite partie pour relier la première conduite de fluide (2) à la première extrémité de douille de raccordement (3), la deuxième extrémité de douille de raccordement (4)) comprenant une deuxième partie de raccordement (V2) destinée à être raccordée à la deuxième conduite de fluide. La première partie de raccordement (VI) comprend une partie de réception (5) cylindrique, plusieurs structures saillantes de retenue (6) espacées dans la direction circonférentielle prévues sur une surface circonférentielle extérieure de la partie de réception (5) s'étendant respectivement sur au moins une partie d'une longueur de la partie de réception (5). Le système de raccordement comprend en outre une douille de compression (13) qui peut être disposée sur la douille de raccordement (1) de sorte qu'elle entoure la partie de réception (5) et qu'un espace de réception (AR) soit formé dans la direction radiale entre la partie de réception (5) et une surface périphérique intérieure de la douille de compression (13) pour recevoir une partie d'extrémité de la première conduite de fluide (2). La douille de compression (13) peut être déformée plastiquement en direction radiale dans la direction périphérique respectivement dans la zone entre deux structures saillantes de retenue (6) au moyen d'un outil de compression (16).
PCT/AT2024/060206 2023-05-17 2024-05-14 Système de raccordement et outil de compression pour un système de raccordement WO2024234028A1 (fr)

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AT503892023 2023-05-17
ATA50389/2023 2023-05-17

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10010573C1 (de) * 2000-03-03 2001-03-01 Unicor Rohrsysteme Gmbh Anschluss-Vorrichtung für ein Rohr
WO2013189740A2 (fr) 2012-06-20 2013-12-27 Georg Fischer Jrg Ag Dispositif de raccordement par serrage pour tuyaux
US11092265B2 (en) * 2017-03-15 2021-08-17 Viega Technology Gmbh & Co. Kg Fitting to be connected to at least one pipe and method for establishing a connection

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10010573C1 (de) * 2000-03-03 2001-03-01 Unicor Rohrsysteme Gmbh Anschluss-Vorrichtung für ein Rohr
WO2013189740A2 (fr) 2012-06-20 2013-12-27 Georg Fischer Jrg Ag Dispositif de raccordement par serrage pour tuyaux
US11092265B2 (en) * 2017-03-15 2021-08-17 Viega Technology Gmbh & Co. Kg Fitting to be connected to at least one pipe and method for establishing a connection

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