• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a pipe connection device and a method for producing a securing element for a leakproof and sealing connection of a male end (1) with a sleeve (2), wherein the pipe connection device comprises a substantially closed clamping ring (4) having a variable circumference and from a plurality of relatively movably arranged members (3) is composed about the force introduction means (14) with a clamping force (S) against the male end (1) can be pressed, wherein on at least one member a securing element (8) is provided, which Direction Einsteckende directed teeth ( 5, 6), each having a base, a first tooth flank, a second tooth flank and a tip, wherein at least one tooth (5, 6) is made wider in the region of the base than in the region of the tip, and wherein at least one tooth ( 5.6) has an undercut.
    公开号:AT511592A4
    申请号:T1343/2011
    申请日:2011-09-19
    公开日:2013-01-15
    发明作者:
    申请人:E Hawle Armaturenwerke Gmbh；
    IPC主号:
    专利说明:

    -1 -
    50 436 GP / GA ············································· ······
    Pipe connection device and method for its production
    The invention relates to a pipe connection device for a leakproof and sealing connection of a spigot end with a sleeve, wherein the pipe connection device comprises a substantially closed clamping ring which has a variable circumference and is composed of a plurality of relatively movably arranged members, which via force application means with a clamping force against the insertion end are pressable, wherein on at least one member, a securing element is provided which direction insertion end facing teeth, each having a base, a first tooth flank, a second tooth flank and a tip.
    Furthermore, the invention relates to a method for producing a securing element for a pipe connection device for a leakproof and sealing connection of a male end with a sleeve, wherein the pipe connection device comprises a substantially closed clamping ring having a variable circumference and is composed of a plurality of relatively movably arranged members which are pressable via force introduction means with a clamping force against the insertion end.
    Pipe connecting devices comprising a substantially closed clamping ring have been known for some time and published in different embodiments.
    For example, pipe connecting devices are known which are adapted to produce a sealing connection of a male end with a sleeve. In particular, in subsequent repair of water pipes only the inner diameter of the tube is known. In many cases, however, the pipe material is not known. This material has on the one hand influence on the outer diameter of the laid pipe and on the other hand on the possibility of connecting a pipe connection device. For example, plastic pipes are made from a less
    ...... ΆΟ. 4.36 ... g; p / GA · # · * · »·» «« · * * «« · · * * «« + ··% «* * *« «· · · · · # ·· * # ι i «· solid material formed as pipes of cast iron. In order to achieve the same resistance as with cast iron pipes, plastic pipes have a larger outside diameter. In addition, the lower hardness and the lower shear strength of the plastic material must be taken into account when connecting to plastic pipes. To meet this challenge, so-called multi-range clutches are in use. These multi-range clutches comprise a clamping ring composed of a plurality of links movably disposed relative to each other. By this relative movement, the diameter of the clamping ring can be varied. This possibility of variation of the diameter subsequently allows a flexible adaptation of the pipe connecting device to different outer diameters.
    In particular, in medium-carrying pipes such as gas lines and water pipes but also in pipelines, etc., the medium may have a certain overpressure. In such pipe systems, it may be advantageous to design the connection between the sleeve and the spigot safely. A leak-proof pipe connection to prevent the male end can be pulled out of the sleeve. For this purpose, it is necessary to provide means which on the one hand cause a force or positive connection with the insertion end and on the other hand a force or positive connection with the sleeve. For this purpose, according to the prior art, teeth are provided on the clamping ring which extend in the direction of the insertion end and improve the friction or the adhesion between the clamping ring and the insertion end. The geometry of these teeth depends on the one hand on the expected pull-out forces and on the other hand on the strength values of the pipe materials. In practice, this adjustment is achieved for example by inserting different teeth in the clamping ring depending on the pipe material.
    A disadvantage of the prior art is that the means for achieving the pull-out protection are inflexible, expensive to manufacture and cumbersome and time-consuming to use. In addition, the pull-out protection is not sufficiently given by the prior art pull-out security. - 3 -
    50 436 GP / GA λ m
    Object of the present invention is therefore to provide a pipe connection device for a reliable and sealing connection of a spigot with a sleeve, which overcomes the disadvantages of the prior art and also low in manufacturing, flexible in the application, easy to use and resistant against environmental influences and wear. Moreover, it is a further object of the invention that the pull-out protection is given for different force ranges, materials and dimensions of the tubes.
    Another object of the present invention is to provide a method of manufacturing a pipe jointing device which is cheap and efficient while meeting the high accuracy requirements of the geometry of the relevant parts for the pull-out protection.
    The objects of the invention are achieved in that at least one tooth is made wider in the region of the base than in the region of the tip. The tooth is designed to be wider in particular in the extension direction in the area of the base than in the area of the tip.
    Furthermore, the objects according to the invention are achieved in that a mass which comprises at least metallic constituents, binders and plastic constituents is introduced into a mold, preferably injection-molded, the mold having a cavity which corresponds to the negative shape of the securing element to be produced with an excess, Thereafter, the shaped mass is removed from the mold, the binder is chemically, physically and / or thermally removed, and then, under thermal action, the shaped mass is debinded to a metallic body, melted and / or sintered.
    According to the invention, it is further provided that the securing element has at least one main tooth and at least one secondary tooth, wherein the main tooth projects beyond the auxiliary tooth towards the insertion end, that the securing element comprises a basic body from which the teeth, in particular a main tooth and a secondary tooth, rise towards the insertion end, that the main tooth and the accessory tooth - 4 - - 4 - • * #
    .50..4.36. GSJGA • »« «« ι «• ·« * · φ «1 < Are connected by a main body and / or that the main body between the main tooth and the secondary tooth has a continuous and / or interruption-free form, which is substantially free of through-openings and / or Cuts is.
    Further features of the invention are that the teeth each have a tip which is adapted to allow penetration into the insertion end under the tensioning force that the main tooth is inclined against the withdrawal force and an undercut, that the main tooth aulte a first main tooth flank whose angle less than 90 ° that the teeth have a substantially triangular cross-section bounded by the base, the first tooth flank, the second tooth flank and the tip, and / or that the main tooth and the side teeth are made wider at the base than in the area of the top. The tooth is designed to be wider in particular in the extension direction in the area of the base than in the area of the tip.
    Further advantageous features are that in at least one tooth, the tip projects beyond the base against the extension direction, that on each member of the pipe connection device, a securing element is provided, that the securing element is integrally preferably made of metal and / or that the securing element made of metal in particular corrosion-resistant , hardenable and / or hardened steel is formed.
    Furthermore, the objects according to the invention are achieved by the method for producing a securing element for a pipe connecting device such that the mass is processed to a metallic body close to the melting point of the metal compound comprising metal components, the mold is divided and openable along a molding line and / or the cavity of the mold is free of undercuts with respect to the mold parting line.
    To achieve the objects according to the invention, particular attention must be paid to the geometrical and strength engineering design of the securing element and the surrounding parts. The following points are highlighted separately: • 4
    .. A0.A36 .. & B / GA • ί * * · Μ * ι «•» · · »4 ·. | 4 * «••• 4« * · • «· * * · < * »44 *» * * »» »* * -5-
    A critical point for the pull-out safety is the contact area of the male end with the securing element. To improve the force and / or positive connection between the insertion end and the securing element teeth according to the invention are provided. These are pressed by the clamping force S against and / or in the insertion. In soft pipes such as plastic pipes made of PVC, the teeth are pressed by the clamping force relatively deep into the surface of the male end. In order to prevent shearing of the pipe material which protrudes between the teeth towards the main body of the fuse element, the distance between the teeth must be large enough.
    This distance causes the surface on the outside of the insertion end, which is subjected to shear between the teeth, to be sufficiently large to withstand the pull-out forces. Another feature that reduces the risk of shearing the Rohrmateriais is the inclined execution of the main tooth. This, in particular its first main tooth flank, is inclined against the extension direction and / or has an undercut. A relative displacement of the indented tooth relative to the insertion end thus causes a further, deeper immersion of the tooth in the tube material.
    For relatively hard pipes of, for example, cast iron, the clamping force is usually not sufficient to allow the teeth to penetrate deep into the pipe material.
    Significantly influenced the penetration of the teeth in the pipe surface by the pressure, which is largely determined by the clamping force and the bearing surface of the teeth on the pipe surface. With the same clamping force, the pressure and / or the surface pressure can thus be increased by providing a smaller contact surface. In the present embodiment, the main tooth overhangs the auxiliary tooth towards the insertion end. As a result, when the pipe connecting device is tensioned, first the tip of the main tooth comes into contact with the surface of the male end. In a possible edge-up of the fuse element is another tooth, in particular the auxiliary tooth of the same fuse element, which is furthest away from the main tooth to a system with the insertion. By this system one or a second tooth the Auflagefiäche of the securing element is lower, which with sufficient clamping force
    ............ ££ >. 436 GP / GA »· **» »» ····························································································· Causes the penetration of at least the main tooth into the surface of the insertion end. In addition to the positive connection by the teeth projecting into the insertion end of the frictional engagement is suitable by the abutment of the side teeth on the surface of the spigot for the pull-out protection. Furthermore, the contact surface is determined by the radius of the tip of the teeth. The sharper the tooth, the smaller the area and the greater the surface pressure at a constant clamping force. This radius is limited by production-related or by economic factors.
    The teeth rise from the main body direction Einsteckenede and have in the region of the body on a base. The tooth is preferably made wider in the region of the base than in the region of the tip. The tip and the base are essentially connected by a first tooth flank and a second tooth flank. These flanks preferably do not run parallel but have a certain opening angle. The opening angle is thus not equal to 0 °. The teeth have a substantially triangular cross-section bounded by the tip, the tooth flanks and the base. The consideration of the tooth geometry relates in particular to a plane in which the center axis of the insertion end extends or which comprises a straight line which runs essentially parallel to the central axis or to the extension direction. Furthermore, the plane is substantially normal to a tangential plane of the insertion end in the region of the point of contact of the considered securing element with the insertion end. This plane corresponds, for example, to the representation planes of the subsequent figures or the plane which is essentially spanned by the vectors of the pull-out force and the clamping force or comprises these vectors.
    Another strength-technical aspect, which is solved by features of the invention, is the connection of the individual teeth with each other. Thus, a base body is provided from which the teeth rise towards the insertion end. The basic body is subjected to a complex state of tension by tensile forces, bending forces, compressive forces and shear forces, etc. To withstand these stresses, the base body has an optimized shape, which prevents the same from breaking. In order to avoid notch effects or weak points, the main body is preferably formed as a continuous body. This particular is free -7 -
    • ft ··· I * M · «· · · · ·« * * * * ft * * ·· ** · ft * .59. 436
    GP / GA of openings.
    To meet the high demands on the exact geometric design of the fuse element while still allowing an economically acceptable pipe connection device are tasks that are solved by the manufacturing method of the invention. This allows the production of the securing element in a single work process, without, for example, the edges, tooth flanks, the base body, etc. in further steps, e.g. to continue machining. Only through the high manufacturing accuracy at low cost is an economical production of the pipe connection device according to the invention possible.
    In further consequence, the invention will be described in more detail with reference to several embodiments.
    Fig. 1 shows a schematic representation of an embodiment of a pipe connection device according to the invention.
    Fig. 2 shows a detailed sectional view of a possible embodiment of the pipe connection device according to the invention.
    Fig. 3 shows a view of a member according to the invention.
    Fig. 4 shows the same configuration as Fig. 3 but in an oblique view
    Fig. 5 shows the detail of a fuse element
    Fig. 6 shows a further embodiment of a member
    Fig. 7 shows a detailed view of the profile of the securing element
    Fig. 8 shows a further embodiment of a member according to the invention
    Fig. 9 shows the same member 3 as Fig. 8.
    FIG. 10 shows a detailed view of the profile of the securing element of FIGS. 8 and 9.
    Fig. 1 shows a schematic representation of an embodiment of a pipe connection device according to the invention. To connect a male end 1 with a sleeve 2, a substantially annular clamping ring 4 is provided. The clamping ring is made of several, relatively movable members
    ............ 5Q.A36 GP / GA ** »** · ·« · t t »m · **» «m
    * «* * * C I · I« · * · * ·· «« * * * * * * * ·············································. The clamping ring 4 has in the illustrated embodiment, a conical shape which is designed such that the width (measured parallel to the central axis 16 of the insertion) with increasing distance from the central axis 16 is smaller. Furthermore, the clamping ring, which preferably has a variable circumference or a variable diameter, is pressed by force introduction means 14 against the insertion end. In the present embodiment, the force introduction means are formed inter alia by two conical surfaces 18a and 18b and two clamping elements 19. By actuating the clamping elements 19, the two conical surfaces 18 are pulled towards each other, whereby the distance between the two conical surfaces 18 is reduced. By reducing the distance of the clamping ring, in particular the members 3 of the clamping ring 4 is pressed against the insertion end 1. During the movement of the links 3 toward the insertion end 1, the diameter of the entire clamping ring is reduced. This is made possible by a relative movement of the links 3 of the clamping ring 4 to each other. At the, the sleeve facing side of the clamping ring, a sealing element 17 is provided. This contacts in the inserted position both the insertion end 17 and the sleeve-side conical surface 18 a. Due to the circumferential contact and crushing of the sealing element along the entire circumference of the insertion end and the entire circumference of the sleeve-side conical surface 18 a, a sealing connection of the two elements to be connected (insertion end and sleeve) is given.
    In order to establish a connection between the insertion end and the sleeve, the insertion end is inserted through the clamping ring into the sleeve. In a further step, via the force introduction means 14, in particular the two conical surfaces 18, which are pulled over clamping elements 19 to each other, the clamping ring is pressed on the one hand against the sleeve-side conical surface 18a and on the other hand against the outer surface of the insertion. Due to the introduction and application of forces, friction and / or positive locking occurs between the clamping ring and the insertion end 1. The connection of the clamping ring to the sleeve is done in particular via positive locking and / or optionally frictional engagement between the conical surfaces 18 and the clamping ring. * φ
    436 GP / GA • * * * «« «· · • * *« «φ φ 9 9 9 Φ Φ Φ Φ ΜΙ Μ Μ · -9-
    Other forces are given for example by a pull-out force. In medium-carrying pipes that have a certain overpressure or by thermal changes in length of the pipe systems, it is necessary to prevent removal of the male end of the sleeve. The pull-out force 20 acts along the drawn vector, in particular along or parallel to the center axis 16. By the pull-out force and the frictional and / or positive fit of the clamping ring with the insertion of the clamping ring is pulled to the opening side conical surface 18b. Due to the conical configuration, the pull-out force 20 is transmitted to the clamping ring, in particular the links 3 of the clamping ring and directed toward the insertion end 1. Thus, a pull-out force A causes a further clamping force S. This increased clamping force in turn results in a larger holding force H and thus better force and / or positive connection between the clamping ring and the insertion end of the first
    To further improve the connection, a securing element 8 is provided. This is provided on at least one member 3 of the clamping ring 4. Preferably, it is provided at the, the insertion end 1 facing side of the clamping ring and on a plurality of links 3.
    Fig. 2 shows a detailed sectional view of a possible embodiment of the pipe connection device according to the invention. Again, a composite of links 3 clamping ring 4 is pressed by force introduction means 14 against a spigot 1. Again, a sealing element 17 and a securing element 8 are provided. The securing element has a main tooth 5 and secondary teeth 6. In the present arrangement, the main tooth and the side teeth are at least partially pressed into the surface of the male end 1. The main tooth is preferably inclined to the extension direction 20.
    Fig. 3 shows a view of a member 3 of the invention, which is used in particular for forming a clamping ring 4. The member 3 has a recess 21 at its end region facing the insertion end 1. This recess 21 is set up to at least partially receive the securing element 8. Furthermore, a Verbindungsungsmittelausnehmung 22 is provided with the
    ............. 5 °. 436 GP / GA »···» »· · * * •» «* ·« ·· »* * * ♦ · ·« «* * * * * * * * * * * *« «· · * * ·· * * · -10-
    Connection middle! 15 of the securing element 8 cooperates to position the securing element 8 in the member 3 and fix it if necessary. The securing element 8 comprises a main body 9, a main tooth 5 and two secondary teeth 6. The teeth each have tips 7 which point from the member 3 in the direction of the insertion end 1 and the direction of the central axis 16.
    Fig. 4 shows the same configuration as Fig. 3 but in an oblique view. In this case, in turn, a securing element 8 is provided on a member 3 of the clamping ring 4 to be formed. The securing element 8 has teeth, in particular a main tooth 5 and two side teeth 6. The teeth each comprise at least one tip 7. In the present embodiment, the tips 7 are designed as straight edges 23.
    These essentially run in a normal plane of the central axis 16 and thus approximately tangentially to the outer surface of the insertion end.
    FIG. 5 shows the detail of a securing element 8 which has a base body 9, a connecting means 15, a main tooth 5 and two secondary teeth 6. The main tooth comprises a first main tooth flank 10, a second main tooth flank 11 and a tip 7. The tip 7 protrudes in the illustrated embodiment in the surface of the insertion 1. This is caused, inter alia, by the clamping force S, through which the securing element 8 against the insertion 1 is pressed. Further, if necessary, the pull-out force A is provided against which the holding force H of the securing element 8 acts. The maximum holding force is largely determined by the force or. Positive fit between the fuse element 8 and the insertion end 1 influenced. To improve this connection, the main tooth 5 is inclined against the extension direction 20 of the pull-out force A. In particular, the angle between the extension direction 20 and the first main tooth flank 10 is less than 90 °. This creates an undercut in the region of the first main tooth flank 10. The second main tooth flank 11 is inclined against the extension direction 20, the angle between the extension direction 20 and the second main tooth flank 11 is smaller than the angle between the first main tooth flank 10 and the extension direction 20. The difference of the two angles corresponds to the opening angle 40 and thus the Area where the tooth itself is located. - 11
    £ 0 436 GP / GA
    The auxiliary tooth 6 also has a tip 7, a first auxiliary tooth flank 12 and a second auxiliary tooth flank 13. The second auxiliary tooth flank 13 is inclined against the extension direction 20, so that between the second auxiliary tooth flank 13 and the extension direction 20 there is an angle which is smaller than 90 °. By contrast, the first auxiliary tooth flank 12 is arranged approximately normal to the extension direction 20 in the present embodiment. Substantially normal in this context means that the first secondary tooth flank may be normal to the extension direction 20, may be inclined to a slight extent against the extension direction 20, so that a slight undercut is given or that the first auxiliary tooth flank is slightly inclined with the extension direction 20, so that the angle between the extension direction 20 and the first auxiliary tooth flank is greater than 90 °. In this configuration, the first auxiliary tooth flank points in the direction of the central axis 16 of the insertion end 1.
    It should be noted that the angle indications refer to angles that lie substantially in one plane, in particular in this case that plane is selected which comprises the central axis 16 of the insertion end and / or extends in the representation plane.
    The main tooth 5 projects beyond the auxiliary teeth 6 by a certain amount, in particular the projection 24. Thus, in the illustrated configuration, the main tooth 5 is pressed deeper around the projection 24 into the surface of the insertion end 1 than the auxiliary teeth 6.
    Further, the teeth in the region of the base body on a base 39, which is preferably made wider than the tooth in the region of the top. 7
    Fig. 6 shows a further embodiment of a member 3 for forming a clamping ring 4 for a pipe connection device according to the invention. At the, the insertion end 1 facing portion of the member 3, the securing element 8 is provided in a recess 21 and the Verbindungsungsmittelausnehmung 22. This has a connecting means 15, which projects into the Verbindungsmittelausnehmung 22 and is held there by form and / or adhesion. The securing element 8 has - 12 -
    - GP - GA, £ 0 436 a base body 9 and a main tooth 5 and three side teeth 6 on. The teeth each comprise tooth flanks 10, 11, 12, 13 and in each case at least one tip 7, which extend in the illustrated embodiment as edges 23 over the entire width of the securing element 8. This sawtooth-like profile improves, in particular, the pull-out safety of the insertion end 1 out of the sleeve 2.
    FIG. 7 shows a detailed view of the profile of the securing element 8 from FIG. 6. In this case, as seen in the extension direction 20, first a main tooth 5 and then a secondary tooth 6 are arranged. The additional secondary teeth 6 follow in the extension direction 20 downstream of the first auxiliary tooth. As in FIG. 5, the angles of inclinations of the major and minor tooth flanks with respect to the extension direction 20 are defined. In this case, the angle 25 of the first main tooth flank 10 is smaller than 90 °. The angle 26 of the second main tooth flank 11 and the angle 28 of the second auxiliary tooth flank 13 are also smaller than 90 °. The angles 27 of the first subsidiary tooth flanks 12 are preferably between 80 ° and 100 °, in particular 90 °. The main tooth 5 projects beyond the auxiliary tooth 6 around the projection 24. The base body 9 is continuous and runs approximately parallel to the extension direction 20. As continuous is meant in particular that between the main tooth 5 and the first auxiliary tooth 6 no interruption, no bore, no Incision etc. is present. This increases the strength of the securing element 8. Further, a connecting means 15 is provided. This is at least partially formed from an extension which can be inserted in a preferred manner in the Verbindungsmittelausnehmung 22 of the member 3. In addition, the connecting means 15 has a clamping element 29. This clamping element cooperates with the Verbindungsungsmittelausnehmung 22 and is adapted to produce a positive connection and / or a positive connection with the member 3.
    Fig. 8 shows a further embodiment of a member 3 according to the invention for forming a clamping ring 4 for a pipe connection device according to the invention. The member 3 has two Verbindungsungsmittelausnehmungen 22. In each of these, a connecting means 15 of the securing element 8 is inserted. The securing element 8 in turn has a main tooth 5 and a number of secondary teeth 6. In the present embodiment, seven auxiliary teeth 6 are provided. In the extension direction
    5Λ 436 GP / GA * · · »» · · · · · · · · · · · · · · · · · · · · · · · ·. 13- the main tooth 5 is first arranged. This is followed by three sub-teeth 6 and a second group of four sub-teeth 6. Between the two groups of sub-teeth a gap 30 is provided, in which no auxiliary tooth is provided. In this, essentially only the main body 9 is pulled through.
    FIG. 9 also shows the same member 3 as FIG. 8 with a securing element 8, which has a main tooth 5 followed by three subsidiary teeth 6, a gap 30 and four further subsidiary teeth 6.
    10 shows a detailed view of the profile of the securing element 8 of FIGS. 8 and 9. This securing element comprises two connecting means 15, which are rigidly connected to the base body 9. From the main body rise the teeth, in particular the main tooth 5 and a number of secondary teeth 6. Between at least two of the side teeth 6, a gap 30 is provided. In a preferred manner, the secondary teeth, the main tooth, the connecting means 15 and the base body 9 are made in one piece - ie in one piece.
    As possible variations of the present invention and the mentioned embodiments, the following features and feature combinations offer:
    The illustrated security elements are L-shaped or U-shaped. The main tooth 5 is arranged such that its first main tooth flank 10 merges essentially into the connecting means 15. However, it also corresponds to the idea of the invention that the main tooth 5 rises from a surface extending substantially parallel to the extension direction 20 and that thus the first main tooth flank 10 and the second main tooth flank 11 merge into this surface or are connected to this surface. Furthermore, it corresponds to the inventive idea that the main tooth 5 is arranged in the extension direction in the second, third or fourth position. Also, a central arrangement of the main tooth between the side teeth and the arrangement of the main tooth 5 as the last tooth in the extension direction can serve to solve the objects of the invention. - 14 - * * • ·
    .50..4.36 GP / GA
    The securing element 8 can basically be arranged arbitrarily on one, several or all members 3 of the clamping ring 4. Figures 4 and 6 show embodiments in which the securing element 8 is provided on the plug-in portion 31 of the member 3. The member 3 comprises a plug portion 31 and a receiving portion 32. To form a substantially closed clamping ring, a plurality of members are joined together. In this case, the respective plug-in portion 31 is inserted into the receiving portion 32 of the subsequent member. According to the embodiment in Fig. 9, the securing element 8 is provided on the receiving portion 32 of the member 3.
    The edges 23 of the securing element 8 are rectilinear in the illustrated embodiments. However, it is quite the idea of the invention, the edges 23 curved, interrupted and / or perform differently. Furthermore, it is also possible to let the edges run obliquely, so that they are skewed to the central axis 16. By assembling a clamping ring with securing elements 8 which have oblique edges 23 results in the entire toothing around the tube a helical shape which further contributes to the safety guard. The tips 7 of the teeth 5, 6 are ideally designed as tips. In practice, these tips are provided by manufacturing and economic conditions with a certain rounding or a certain tolerance. The tips preferably have a radius which is less than one millimeter, preferably not more than 0.2 mm.
    In a further, not shown embodiment, the edges 23 of the tips 7 are interrupted and extend over only a portion of the width of the securing element 8. The teeth themselves are not necessarily provided along the entire width of the securing element 8. They can also be arranged centrally, laterally or asymmetrically. The interruptions may also be arranged symmetrically or following a certain pattern.
    Subsequently, the method for producing the securing element 8 will be described in more detail. The exact design of the mold and consistent quality to maintain the strength are important factors for the functionality of the present pipe connection device. From an economic point of view, it is also important to produce the high demands placed on the securing element at a reasonable cost. The conflict of objectives between the high demands on the strength of the securing element, the dimensional accuracy of the securing element and the economic considerations of the production costs of the pipe connecting device is achieved in particular by the method according to the invention.
    To produce the fuse element, a model of the fuse element to be produced is first created. This is not formed in original size but with a certain excess. The resulting shape includes a cavity substantially corresponding to the fuse element with a certain excess. To produce the fuse element, first different components of metal powders and additives corresponding to the desired alloy are mixed together to form a mixture. Subsequently, thermoplastic materials and additives are added. These additives are, for example, binders. The mixture of the plastic and the metal powder is subsequently fed to a modified thermoplastic injection molding machine, which introduces the mixture into the mold. The supply of the mixture of metal powder, thermoplastics and optionally additives can be done directly or with certain intermediate steps. These intermediate steps include, for example, thermal bonding of the plastics with the metal powder and subsequent production of a granulate, which is subsequently fed to the injection molding machine.
    Alternatively, however, the inhomogeneous mixture of the metal powder with plastic granules and additives of the injection molding machine can be supplied directly. The injection molding machine comprises a heat supply device and a conveying device, in particular a screw conveyor for compressing the mixture and / or the resulting molten, viscous mass. The flowable mass is then pressed under high pressure into the cavities of the mold.
    5A.436 GP / GA ******* ·· * • * * I »· ♦ * ·» · * ♦ ·· ** # ι * * * · · «« * ψ · »Ι ··· * · - 16-
    In this case, the mass is injected into the recesses for forming the teeth, in particular the main tooth and the secondary teeth, the base body and the connecting means. Subsequently, the mass is allowed to solidify in the form of cavities by cooling in their form. After cooling to a demolding temperature, the mold is opened along a molding line 34, the solidified part removed and further processed. This removed intermediate corresponds in appearance to the fuse element to be produced, but with a certain excess. Subsequently, in a further process step, the plastic used as a binder is dissolved out of the intermediate product. Here, thermal, chemical and / or physical process steps are used. After removal of the plastic component, a second intermediate product is formed, which corresponds to the appearance of the securing element to be produced, but essentially consists only of the metallic or of the alloy components. This open-pore structure is sintered or treated in a further step just below the melting point of the alloy, resulting in a solid metallic body, which also corresponds in size to the desired end product.
    In particular, the production method according to the invention solves the problem that the relevant parts of the pipe connecting device can be manufactured efficiently without neglecting the high demands on the strength and the dimensional tolerance. In FIGS. 5 and 7, fitting slopes 33 are shown. These are formed as partial surfaces of the clamping elements 29. The oblique configuration facilitates insertion of the securing element 8 into the links 3. Furthermore, the positioning and fixing of the connecting means 15 in the connecting means recess 22 is facilitated and improved by the special hook-shaped configuration. In order to make the production efficient, it must be ensured in the mold construction that the mold, in particular the injection mold, consists of as few parts as possible. Due to the inventive design of the fuse element on the one hand and the shape on the other hand, a 2-part mold can be used whose dividing lines along the molding line 34 runs. Due to the special design of the flanks 10, 11, 12, 13 of the teeth 5, 6 and the fitting slopes 33 and the L-shaped configuration of the combination of base body 9 and
    50..436 GP / GA
    Connection middle! 15, the choice of molding lines and molding directions for formability is important. In particular, when molding and / or injection-molding undercut elements as they are provided both in the main tooth or in the clamping element 29 must still be given an easy formability. A feature of the method according to the invention is thus that the shaping line 34 runs in such a way that, in spite of the undercut teeth, the formability is made possible by a 2-part mold. In FIG. 5, the parting line 34 extends, for example, from an outer edge or outer surface of the connecting means 15 to the opposite outer edge or outer surface of the base body 9. In FIG. 7, the parting line 34 extends from an outer edge or outer surface of the base body in the direction of fitting 33 and clamping element 29. Due to the oblique course of the molding line, the mold with respect to the molding line 34 is free of undercuts.
    10 shows a further embodiment of a detail of the pipe connecting device according to the invention. In this embodiment, in addition to the first connecting means 15 which carries the clamping element 29 and a second connecting means 15 is provided on the opposite side of the securing element. This has a fitting slope 33 on its inwardly facing surface of the connecting means. This fitting slope is set up or serves to improve the fit between the connecting means and the connecting means recess 22 and to facilitate insertion and clamping. Also, the clamping element 29 of the first connecting means 15 has a fitting slope 33. In addition to the undercuts and the sawtooth configurations of the teeth 5, 6 and the clamping element 29, the combination of base body and connecting means 15 is configured U-shaped. This must be taken into account in the shaping. In a preferred embodiment, the pitch of the two-part mold extends along the molding line 34. This is placed so that all elements of the fuse element 8 can be easily formed and removed from the mold. In particular, the fitting slopes 33 are configured to allow and / or facilitate the removal of the injection molded intermediate from the mold. The two fitting slopes 33 in FIG. 10 are in FIG
    ............ 5Q.A36 GP / GA • # * * ♦ I · «· ·» «4 *» «#» ψ * • ft ** »« «« | | * «· · · 4 ·« -18- ......
    Essentially parallel. They are approximately or substantially normal to the parting line 34. Preferably, the fitting bevels 33 have a certain inclination to the normal on the parting line 34, so that a shaping is possible. In one possible embodiment, the first main tooth flank 10 is substantially parallel to the fitting slope 33.
    Further advantageous features of the invention result from the special design of the links 3. FIG. 8 shows a possible embodiment of a ribbing of the link 3. In this case, main ribs 35 and secondary ribs 36 are provided which extend from the outer surfaces 37 of the link 3 inwards. As shown in Fig. 1, a contact between the conical surfaces 18 and the clamping ring 4 and the members 3 is given in particular in the force introduction areas 38. These represent those areas in which the clamping force is significantly transferred to the links.
    As a result, in particular, these areas are heavily loaded and specially designed according to the invention. These are preferably thicker and / or made stronger than the side ribs 36. In a preferred embodiment, the main ribs 35 extend between 70 and 110 ° inclined to the outer surface 37 of the member , According to a further preferred embodiment, the main ribs 35 extend substantially through the clamping forces S introduced by the tapered surfaces 18.
    Further advantageous features of the invention relate to the special design of the main and auxiliary teeth 5, 6. These can be undercut, on the one hand, in order to achieve a better grip and thus a better pull-out protection of the insertion end 1. Furthermore, the teeth 5, 6 have a minimum distance in order to avoid shearing of the tube material which is located between the teeth 5, 6.
    In addition, the teeth 5, 6 have a certain thickness or a certain minimum opening angle in order to provide a necessary resistance to plastic or elastic deformation. This is achieved in particular by the inventive design of the teeth 5, 6. Thus, the teeth 5, 6 at least partially an undercut which is formed such that a bending of the teeth
    50 ^ 436 GP / GA «* · **» «« · · «··« · · · «« «a • λ ·· ** · ^« * · · * * «« »· * · * · · ·······································. According to one embodiment, the angle 25 of the first main tooth flank 10 is about 75 °. The angle 26 of the second main tooth flank 11 is about 35 °. The opening angle 40 of the tooth is about 40 ° in this preferred embodiment. By this or similar angular relationships, a sufficient support and a sufficiently wide base 39 of the tooth on the base body 9 is given. The side teeth have similar angular relationships in a possible embodiment. Thus, the angle 27 of the first auxiliary tooth flank 12 may be about 90 °. Even slight undercuts, such as at an angle of 75-85 ° or slight inclinations of 95-105 ° are conceivable. The angle 28 of the second auxiliary tooth flank 13 can be for example about 35 °. The second main tooth flank and the second side tooth flank may be parallel according to a preferred embodiment. The opening angle 40 of the secondary teeth can be about 55 °.
    The angle of the fitting slopes 33 to the extension direction 20 is about 80 to 85, preferably 83 °. This angle thus corresponds to a slope of about 7 ° from the normal to the extension direction. As with the first main tooth 29 is given a slight undercut even in the fitting slope 33 of the clamping member 29.
    The embodiment shown in FIG. 7 of a securing element for a pipe connecting device according to the invention can be used, for example, for pipe dimensions of the insertion end of approximately 85 mm to 230 mm.
    In addition the total length, thus the length of the represented element from left to right approximately 14mm, the total height which normal on the representation level measured is approximately 7mm and the depth, which is normal to the representation level measured approximately 10mm. The securing element, which is dargestelit in Figure 5, can be used for example for pipe dimensions of the insertion of a diameter from 40mm to 130mm. For example, the total length of the element may be about 9mm, the height about 6.5mm and the width of the element measured normal to the plane of view is about 5mm. In the embodiment of Fig. 10, for example, pipe diameter of the insertion of 160mm to 700mm can be used. The length of the fuse element can be from left to right in the present representation about 34 mm, the height is composed in particular of the first main tooth flank and the connecting means is about 7mm and the width of the element, which is measured normal to the plane is about 12mm ,
    The number of teeth of the different embodiments may vary depending on the tooth geometry and arrangement.
    At this point it should be noted that the invention is not limited to the stated embodiments. Further embodiments corresponding to the concept of the invention also result from combinations of individual or several features which can be taken from the entire description, the figures and / or the claims. Thus, embodiments are disclosed that consist of combinations of features that come from different embodiments. The figures are at least partially schematic representations, wherein the dimensions and proportions of other, not graphically illustrated, embodiments or features as well as real versions may differ. -21 50 436
    GP / GA 1. Inserting 2nd socket 3. Links 4. Clamping ring 5. Main tooth 6. Secondary tooth 7. Tip 8. Securing element 9. Main body 10. First main tooth flank 11. Second major tooth flank 12. First secondary tooth flank 13. Second secondary tooth flank 14. Force introduction means 15 Connecting means 16. Center axis of the insertion end 17. Sealing element 18. Conical surfaces (a sleeve side, b opening side) 19. Clamping element 20. Extraction direction 21. Recess 22. Connecting means recess 23. Edge 24. Overhang 25. Angle of the first main tooth flank 26. Angle of the second main tooth flank 27. Angle of the first secondary tooth flank 28. Angle of the second secondary tooth flank 29. Clamping element 30. Gap 31. Plug-in section 32. Receiving section 33. Fitting slope 34. Shaping line 35. Main rib 36. Sub-rib 37. Outer surface of the member 38. Force introduction area 39. Base 40. Opening angle H holding force S clamping force A pull-out force
    权利要求:
    Claims (17)
    [1]
    -22- 50 436 GP / GA ·········································································································· an anchor-proof and sealing connection of a male end (1) with a sleeve (2), wherein the tube connecting device comprises a substantially closed clamping ring (4) having a variable circumference and is composed of a plurality of relatively movably arranged members (3), the can be pressed against the insertion end (1) by means of force application means (14) with a clamping force (S), wherein a securing element (8) is provided on at least one member, which direction has insertion end directed teeth (5, 6) each having a base, a first tooth flank, a second tooth flank and a tip, characterized in that at least one tooth (5, 6) is made wider in the area of the base than in the area of the tip and that at least one tooth (5, 6) has an undercut has a negative
    [2]
    2. Pipe connection device according to claim 1, characterized in that the securing element (8) has at least one main tooth (5) and at least one auxiliary tooth (6), wherein the main tooth (5) projects beyond the auxiliary tooth insertion end (1).
    [3]
    3. Pipe connection device according to claim 1 or 2, characterized in that the securing element (8) comprises a base body (9) from which the teeth (5,6), in particular a main tooth (5) and a secondary tooth (6), direction Raise the infill {1}.
    [4]
    4. Pipe connection device according to one of claims 1 to 3, characterized in that the main tooth (S) and the auxiliary tooth (6) are connected by a base body (9).
    [5]
    5. Pipe connection device according to one of claims t to 4, characterized in that the base body (9) between the main tooth (5) and the ................ 50 436 GP / GA • I f 9 «· 4 * · * ♦« · II «II« · · «Φ · * · I · · · I ···· · * · · ·· I * I IM IIII * -23- Secondary tooth (6 ) has a continuous and / or uninterrupted shape, which is substantially free of passage openings and / or incisions.
    [6]
    6. Pipe connecting device according to one of claims 1 to 5, characterized in that the teeth (5,6) each have a tip (7) which is adapted to allow penetration into the insertion end under the clamping force (S).
    [7]
    7. Pipe connection device according to one of claims 1 to 6, characterized in that the main tooth {5) is inclined against the pull-out force (A) and has an undercut.
    [8]
    8. Pipe connection device according to one of claims 1 to 7, characterized in that the main tooth (S) has a first main tooth flank (IO) whose angle (25) is smaller than 90 °.
    [9]
    9. Pipe connection device according to one of claims 1 to 8, characterized in that the teeth (5, 6) have a substantially triangular cross-section which is bounded by the base, the first tooth flank, the second tooth flank and the tip.
    [10]
    10. Pipe connecting device according to one of claims 1 to 9, characterized in that the main tooth (5) and the auxiliary teeth (6) in the region of the base (39) are made wider than in the region of the tip (7).
    [11]
    11. Pipe connection device according to one of claims 1 to 10, characterized in that at least one tooth, the tip (7) the base (39) extends beyond the Au zugsrichtung (20).
    [12]
    12. Pipe connecting device according to one of claims 1 to 11, characterized in that a securing element is provided on each member of the pipe connecting device.
    [13]
    13. Pipe connection device according to one of claims 1 to 12, characterized in that the securing element is integrally preferably made of metal.
    [14]
    14. Pipe connection device according to one of claims 1 to 13, characterized in that the securing element is formed of metal in particular from corrosion-resistant, hardenable and / or hardened steel.
    [15]
    15. A method for producing a securing element (8) for a pipe connection device for a leakproof and sealing connection of a male end (1) with a sleeve (2), wherein the pipe connection device comprises a substantially closed clamping ring (4) having a variable circumference and composed of a plurality of members movably arranged relative to one another), which can be pressed against the insertion end (1) via force introduction means (14) with a clamping force (S), characterized in that - a mass comprising at least metallic constituents, binders and plastic constituents the mold has a cavity corresponding to the negative shape of the securing element to be produced with an oversize, after which the shaped mass is removed from the mold, the binder is chemically, physically and / or is thermally removed and - then under Exposing heat the shaped mass to a metallic body, melted and / or sintered.
    [16]
    16. The method according to claim 15, characterized in that the mass is processed near the melting point of the Metallbestendteile comprehensive metal compound to a metallic body. 1 / .Verfahren according to claim 15 or 16, characterized in that for the production of a securing element, the mold along a dividing line (34) is divided and openable.
    [17]
    18. The method according to any one of claims 15 to 17, characterized in that for the production of a securing element of the cavity of the mold with respect to the molding line (34) is free of undercuts.

    &Amp; Partner Vienna, on September 19, 2011 Applicant represented patent Puchberger Jf
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    同族专利:
    公开号 | 公开日
    EP2758700A1|2014-07-30|
    WO2013041491A4|2013-05-16|
    AT511592B1|2013-01-15|
    EP2758700B1|2015-12-09|
    PL2758700T5|2019-07-31|
    EP2758700B2|2019-01-23|
    RU2601784C2|2016-11-10|
    WO2013041491A1|2013-03-28|
    RU2014115535A|2015-10-27|
    PL2758700T3|2016-06-30|
    DK2758700T3|2016-02-29|
    PT2758700E|2016-03-31|
    DK2758700T4|2019-05-06|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA1343/2011A|AT511592B1|2011-09-19|2011-09-19|Tube connection device and method for the production thereof|ATA1343/2011A| AT511592B1|2011-09-19|2011-09-19|Tube connection device and method for the production thereof|
    PL12766033T| PL2758700T5|2011-09-19|2012-09-17|Pipe connecting device and method for production thereof|
    EP12766033.0A| EP2758700B2|2011-09-19|2012-09-17|Pipe connecting device and method for production thereof|
    PCT/EP2012/068256| WO2013041491A1|2011-09-19|2012-09-17|Pipe connecting device and method for production thereof|
    PT127660330T| PT2758700E|2011-09-19|2012-09-17|Pipe connecting device and method for production thereof|
    DK12766033.0T| DK2758700T4|2011-09-19|2012-09-17|Pipe Connecting Device and Method of Preparation thereof|
    RU2014115535/06A| RU2601784C2|2011-09-19|2012-09-17|Device for connecting pipes and production method thereof|
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