WO2010057742A1 - Élément composite avec corps de base et insert fileté - Google Patents

Élément composite avec corps de base et insert fileté Download PDF

Info

Publication number
WO2010057742A1
WO2010057742A1 PCT/EP2009/063989 EP2009063989W WO2010057742A1 WO 2010057742 A1 WO2010057742 A1 WO 2010057742A1 EP 2009063989 W EP2009063989 W EP 2009063989W WO 2010057742 A1 WO2010057742 A1 WO 2010057742A1
Authority
WO
WIPO (PCT)
Prior art keywords
threaded insert
bore
base body
threaded
insert
Prior art date
Application number
PCT/EP2009/063989
Other languages
German (de)
English (en)
Inventor
Joachim Hausch
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2010057742A1 publication Critical patent/WO2010057742A1/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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
    • F16B37/122—Threaded inserts, e.g. "rampa bolts"
    • F16B37/125—Threaded inserts, e.g. "rampa bolts" the external surface of the insert being threaded
    • F16B37/127—Threaded inserts, e.g. "rampa bolts" the external surface of the insert being threaded and self-tapping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F16L41/10—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe the extremity of the pipe being screwed into the wall
    • 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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
    • F16L47/24—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics for joints between metal and plastics pipes

Definitions

  • the invention is based on a composite component comprising a base body which contains at least one thermoplastic material, and a threaded insert made of a heatable by induction and / or good heat conducting material which is inserted into a blind hole of the base body. Furthermore, the invention relates to a method for fastening a threaded insert in a base body.
  • Thread inserts made of a material different from the material of the base body are used, for example, if the loads in the area of the thread insert exceed the loads which are absorbed by the base body.
  • the threaded inserts are made of a metal or other pressure or tensile material.
  • a threaded insert By using such a threaded insert is avoided, for example, that a bolted component breaks out on the body by acting on the attachment force or loosens and dissolves.
  • such threaded inserts include an internal thread into which the attachment is screwed.
  • pipelines can be screwed to a liquid container, the liquid in the liquid container being under pressure, so that a thread formed in the plastic container would not be able to withstand the forces imposed by the pressure force.
  • an additional strength is achieved by the use of the threaded insert.
  • Thread inserts currently used are made of brass, for example, and have on their outside a cross knurling and a groove for receiving a sealing ring.
  • the threaded insert is heated and then into a hole in the Basic body pressed.
  • the thread geometry of the attached thread on the outside of the threaded insert is designed so that the thread when screwing automatically into the
  • Plastic flows together behind the inserted part, which may possibly lead to a reduction in strength.
  • the material confluence can result in out-of-roundness of the overmolded material.
  • An inventively designed composite component comprises a base body containing at least one thermoplastic material, as well as a threaded insert of a heatable by induction and / or good heat conducting material, which is inserted into a bore of the base body.
  • the threaded insert has a rolled external thread with which it is fixed in the base body, wherein the main body is melted into threads of the external thread.
  • the inventive shape of the composite component is further a great stability against external loads, for example, by high fluid pressures when the composite component, for example, flows through a high-pressure liquid or contains such, or attack other strong forces on the composite component obtained ,
  • a sealing element is positioned between the base body and the threaded insert.
  • Gas can escape from the composite component or enters the composite component and so for example, contaminates a liquid contained in the composite component or a liquid flowing through.
  • the sealing element is a sealing ring which is received in a groove on the bottom or in a radial narrowing of the bore.
  • the force is set, for example, by the torque to be applied when screwing in the thread insert and the screwing depth.
  • the sealing ring used is particularly preferably a quadring.
  • a quadring As Quadring while a O-ring is called, which has an approximately square cross-section.
  • the advantage of a quadring, for example, over an O-ring, is that the quadring seals in two directions.
  • the quadring has a sealing lip, so that a larger fitting sealing surface is achieved.
  • the bore into which the threaded insert is screwed has a roundness tolerance which is less than 200 ⁇ m.
  • the threaded insert is in principle any good heat conducting material, preferably by induction heatable material. Particularly preferred is the material of which the base body is made, selected from the group consisting of aluminum, brass or surface-treated steels.
  • the threaded insert is made of aluminum, it is preferable to use a high strength aluminum.
  • the advantage of using aluminum is its low density. In this way, the composite component can also be used in lightweight components.
  • Heating of the threaded insert until reaching the melting temperature melts the thermoplastic material in the immediate vicinity of the threaded insert.
  • the molten thermoplastic penetrates into the threads of the threaded insert and seals it against the environment.
  • the seat of the threaded insert in the body is further stabilized and sealed.
  • tension in the plastic is relaxed by the heating.
  • the threaded insert changes the position in the bore during the solidification of the plastic, it is preferable to fix the threaded insert until reaching the glass transition temperature of the plastic. As a result, the threaded insert, for example against buoyancy efforts during solidification of the plastic at its position in the bore can be maintained.
  • a sealing element is inserted into a groove formed in the bore.
  • the sealing element is, as already described above, preferably a sealing ring, in particular a quadring.
  • the groove into which the sealing element is inserted, at the bottom or in a radial narrowing of the bore is formed.
  • the bore has a bottom, if this is formed for example as a blind hole. In a design as Blind hole can attach only one attachment to the body in the threaded insert. If the bore has a radial constriction, then it is possible for a through-bore to be formed through the main body. This can for example be flowed through by a fluid.
  • the heating of the threaded insert in step (b) is preferably carried out inductively.
  • inductive heating of the threaded insert can be specifically heated.
  • a heating of the base insert surrounding the threaded insert takes place only through the hot threaded insert.
  • the base body is melted only in the immediate vicinity of the threaded insert.
  • the structure of the body is not changed.
  • a coil for inductive heating whose diameter corresponds to the diameter of the threaded insert.
  • a heating element formed in the diameter of the threaded insert can be applied to the threaded insert so that it passes through
  • Heat conduction is warmed up. It is also possible, for example, to apply a voltage to the threaded insert, so that the threaded insert is heated according to the principle of resistance heating. However, heating of the threaded insert by induction is preferred.
  • the screwing of the threaded insert in the body is preferably carried out by means of a spindle with low peripheral speed.
  • the screwing process is terminated as soon as the threaded insert abuts the bottom or at the radial constriction of the bore.
  • the striking of the threaded insert is preferably carried out with a predetermined torque. Due to the predetermined torque required for the sealing force is impressed on the sealing element.
  • the force on the sealing element also depends on the depth of the groove, in which the sealing element is inserted, and the dimensions of the sealing element.
  • the spindle is screwed to a screwed in an internal thread of the threaded insert Threaded mandrel attacks. By screwing the threaded mandrel in the internal thread of the threaded insert better handling is achieved. Even if no spindle is used for screwing the threaded insert, it is preferred to use a threaded mandrel, with the aid of which the threaded insert is screwed into the bore.
  • the removal of the threaded mandrel after screwing the threaded insert is achieved for example by reversing the direction of rotation of the spindle. By reversing the direction of rotation of the spindle, the threaded mandrel is thus unscrewed from the internal thread again.
  • the threaded mandrel is first screwed into the inner bore, then the threaded insert is screwed with the threaded mandrel into the bore, and after striking the threaded insert at the bottom or at the radial constriction of the bore, the resistance is overcome, and the mandrel is further rotated and screwed so again out of the internal thread.
  • the single FIGURE shows a section through an inventively designed composite body with a base body and a threaded insert.
  • a composite component comprising a main body into which a threaded insert is inserted, shown.
  • An inventively designed composite component 1 comprises a base body 3 made of a material containing at least one thermoplastic material. In the main body 3, a threaded insert 5 is inserted.
  • the main body 3 is, for example, a container for a liquid or a gas. Also, the main body may be any other component.
  • the main body is in particular a component which contains a gas or a liquid or is traversed by a gas or a liquid.
  • the basic body can also be any component containing a liquid that is used in a motor vehicle.
  • One possible use of the composite component 1 is for example the
  • thermoplastic material which is used for the production of the main body 3
  • any thermoplastic material is suitable.
  • thermoplastics are, for example, polyolefins, for example polyethylenes or polypropylene, polyvinyl compounds, for example polyvinyl chloride, polyvinylidene chloride, polyvinyl esters, polyvinyl alcohols, polyvinyl acetates, polyvinyl acetals, polyvinyl ethers, polyvinyl lactams or polyvinylamines, styrene polymers, for example polystyrene, styrene-acrylonitrile Copolymers or modified, for example rubber-modified, polystyrene and acrylonitrile butadiene styrene, polyacrylic acid, poly (meth) acrylic acid esters, polyacrylates, polymethyl methacrylate, polyacrylamide, polycarbonate, polyoxymethylene, polyphenylene ethers, fluoropolymers, for example poly
  • thermoplastics are polyesters and polyamides.
  • the thermoplastic material may further contain fillers or reinforcing agents.
  • the fillers or reinforcing materials may be present, for example, as a powder or as fibers.
  • Commonly used fillers or reinforcing agents are, for example, glass powder, mineral fibers, whiskers, aluminum hydroxide, metal oxides such as aluminum oxide or iron oxide, mica, quartz powder, calcium carbonate, barium sulfate, titanium dioxide or wollastonite.
  • the thermoplastic contains fibrous reinforcing materials, these may be present as short fibers or as long fibers. When long fibers are used, usually continuous fibers are used. customarily Welded fibers are, for example, glass fibers, carbon fibers or arabin fibers.
  • thermoplastic resin may contain other additives such as thixotropic agents, for example silica, silicates such as aerosils or bentonites, or organic thixotropic agents and thickeners, for example polyacrylic acid, polyurethanes, hydrogenated castor oil, dyes, fatty acids, fatty acid amides, plasticizers, wetting agents, defoamers, lubricants, driers, Crosslinkers, photoinitiators, complexing agents, waxes, pigments or conductive polymer particles.
  • thixotropic agents for example silica, silicates such as aerosils or bentonites
  • organic thixotropic agents and thickeners for example polyacrylic acid, polyurethanes, hydrogenated castor oil, dyes, fatty acids, fatty acid amides, plasticizers, wetting agents, defoamers, lubricants, driers, Crosslinkers, photoinitiators, complexing agents, waxes, pigments or conductive polymer
  • a bore 7 is formed, in which the threaded insert 5 is received.
  • the threaded insert 5 has an external thread 9 with which the threaded insert 5 is screwed into the bore 7.
  • the external thread 9 is rolled.
  • the external thread 9 is not formed by a cutting process as in the threading, but by a pressing process.
  • the threaded insert 5 is heated after screwing into the bore 7 to a temperature above the melting temperature of the thermoplastic material of the base body 3.
  • the thermoplastic melts in the immediate vicinity of the threaded insert 5 and penetrates into the threads 1 1 of the external thread.
  • the heating of the threaded insert takes place until the thermoplastic material begins to melt in the immediate vicinity of the threaded insert. As soon as the thermoplastic material has started to melt in the immediate vicinity of the threaded insert 5, the heating of the threaded insert 5 is terminated.
  • the molten thermoplastic material of the base body 3 that has penetrated into the threads 1 1 can solidify again.
  • the bore for this purpose has a radial constriction 15, in which a groove 17, in which the sealing element 13 is inserted, is formed.
  • the sealing element 13 is a sealing ring, in particular a quadring. Due to the radial constriction, the diameter of the bore 7 decreases from a large diameter in the region of the threaded insert 5 to a smaller diameter. This makes it possible to achieve a passage into the main body 3. In this way, for example, a gas contained in the base body or a liquid contained in the base body 3 can flow out through the bore 7.
  • a pipe is attached, through which the gas or liquid can continue to flow.
  • the bore 7 has no radial constriction 15 but is closed with a bottom.
  • the sealing element 13 is inserted in a groove at the bottom of the bore 7.
  • the material of the sealing element 13 is preferably stable against the temperatures occurring at the threaded insert 5.
  • a sealing element 13 made of an elastomeric material is preferably used, which is stable up to temperatures of at least 280 ° C., in particular up to temperatures of at least 320 ° C. Suitable material is, for example, EPDM.
  • Corresponding sealing elements are known to the person skilled in the art and are commercially available.
  • an internal thread 19 is formed in the threaded insert 5 in the embodiment shown here.
  • the internal thread 19 can be produced by any method known to the person skilled in the art. In general, the internal thread 19 is produced by a thread cutting method.
  • the threaded insert 5 is used, for example, when a high internal pressure acts on the surrounding wall in the case of a flow-through line.
  • the wall and the connection to an adjacent component is reinforced. Even if, for example, a tensile, bending or shearing force acts on a component screwed into the threaded insert 5, the threaded insert 5 serves to reinforce the connection. Breakage is prevented in this way.
  • the threaded insert 5 is further preferably used when a frequent assembly and
  • the threaded insert 5 is made of a good thermal conductivity material. As a result, a uniform heating of the threaded insert 5 can be achieved.
  • the threaded insert 5 is preferably heated via the free surface 21. For this purpose, it is possible, for example, to position a coil above the free surface 21 and to heat the threaded insert 5 inductively.
  • the material used must permit inductive heating in this case.
  • a coil for inductive heating of the threaded insert 5 a copper coil is preferably used. The coil preferably has a diameter which corresponds to the diameter of the threaded insert 5.
  • Suitable materials for the threaded insert 5 are, for example, aluminum, brass or surface-treated steels. Particularly preferred as the material for the threaded insert 5, however, aluminum, in particular high-strength aluminum is used. The use of aluminum has the advantage that the threaded insert 5 can also be used in lightweight components in this case.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un élément composite qui comprend un corps de base (3) en un matériau qui contient au moins un plastique thermoplastique, ainsi qu'un insert fileté (5) en un matériau pouvant être chauffé par induction et/ou bon conducteur thermique, qui est inséré dans un alésage (7) du corps de base (3). L'insert fileté (5) présente un filetage extérieur laminé (9) avec lequel il est fixé dans le corps de base (3), et le corps de base (3) est fondu dans les pas de filet (11) du filetage extérieur (9). L'invention concerne en outre un procédé de fixation d'un insert fileté (5) dans un corps de base (3) en un matériau qui contient un plastique thermoplastique. L'insert fileté (5), qui présente un filetage extérieur laminé (9), est vissé dans un alésage (7) réalisé dans le corps de base (3) et est ensuite chauffé localement jusqu'à l'obtention de la température de fusion du plastique thermoplastique du corps de base (3), qui entoure l'insert fileté (5).
PCT/EP2009/063989 2008-11-18 2009-10-23 Élément composite avec corps de base et insert fileté WO2010057742A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810043816 DE102008043816A1 (de) 2008-11-18 2008-11-18 Verbundbauteil mit Grundkörper und Gewindeeinsatz
DE102008043816.2 2008-11-18

Publications (1)

Publication Number Publication Date
WO2010057742A1 true WO2010057742A1 (fr) 2010-05-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/063989 WO2010057742A1 (fr) 2008-11-18 2009-10-23 Élément composite avec corps de base et insert fileté

Country Status (2)

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DE (1) DE102008043816A1 (fr)
WO (1) WO2010057742A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105965919A (zh) * 2016-06-08 2016-09-28 江西洪都航空工业集团有限责任公司 一种制造防溢胶快捷连接装置的rtm工艺方法
WO2020222888A1 (fr) * 2019-05-01 2020-11-05 Siemens Energy, Inc. Outil d'insertion à stabilisation thermique inductive
CN113299516A (zh) * 2021-04-14 2021-08-24 珠海沃顿电气有限公司 一种防松拉杆及断路器及环网柜

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010063076A1 (de) * 2010-12-14 2012-06-14 Airbus Operations Gmbh Befestigungsanordnung sowie Befestigungsbeschlag zum Befestigen eines Bauteils an ein Strukturbauteil eines Luft- oder Raumfahrzeuges
DE102013226166A1 (de) * 2013-12-17 2015-06-18 MAHLE Behr GmbH & Co. KG Anschlussstelle an einem Kältemittel führenden Bauteil

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834438A (en) * 1973-01-17 1974-09-10 Yardley Prod Ultrasonic inserts

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834438A (en) * 1973-01-17 1974-09-10 Yardley Prod Ultrasonic inserts

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105965919A (zh) * 2016-06-08 2016-09-28 江西洪都航空工业集团有限责任公司 一种制造防溢胶快捷连接装置的rtm工艺方法
CN105965919B (zh) * 2016-06-08 2018-06-26 江西洪都航空工业集团有限责任公司 一种制造rtm防溢胶快捷连接装置的方法
WO2020222888A1 (fr) * 2019-05-01 2020-11-05 Siemens Energy, Inc. Outil d'insertion à stabilisation thermique inductive
CN113299516A (zh) * 2021-04-14 2021-08-24 珠海沃顿电气有限公司 一种防松拉杆及断路器及环网柜

Also Published As

Publication number Publication date
DE102008043816A1 (de) 2010-05-20

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