• 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 present invention relates to a method for over-molding a thermoplastic tip (4, 5) on a hollow thermoset composite hollow section (1) and to an assembly comprising a thermosetting section (1) and a thermoplastic tip (4, 5). , the method is characterized in that it has the following steps: - shape machining of the profile (1), of thermosetting composite on the injection zone, - positioning of a plug (2, 3) in the profile ( 1), - thermal conditioning of the profiled assembly (1) and the plug (2, 3), - thermoplastic composite injection of the nozzle (4, 5) for creating the junction of the profile (1), the plug (2, 3) and the tip (4, 5).
    公开号:FR3036644A1
    申请号:FR1555979
    申请日:2015-06-26
    公开日:2016-12-02
    发明作者:Stephane Lull；Stephane Latron；Fabrice Sorhouet；Jerome Nadeau；Thomas Clerc
    申请人:Somocap；Epsilon Composite SA；
    IPC主号:
    专利说明:

    [0001] The invention relates to a hollow section such as a tube made of thermosetting composite material preferably consisting of carbon fibers, on which is molded a tip made of thermoplastic material or thermoplastic composite material for the realization of a piece such as a connecting rod, in this case the two ends will be overmolded.
    [0002] This type of part is subjected to significant forces both in tension and in compression, but also in vibration in torsion and temperature, especially in the case of connecting rods used for the industrial and aeronautical sectors. It is therefore necessary that the connection between the profile and the overmolded tip is sufficiently strong. The tensile force it must withstand is greater than 1 ton with a temperature gradient up to 140 ° for a profile section with a diameter or maximum width of 15 mm. The two materials (thermosetting carbon and thermoplastic plug and tip have different coefficients of expansion and temperature differences induce risks of separation of the two materials and therefore a risk of accident.The object of the invention is to propose a set of and a method of manufacturing the assembly which makes it possible to respond to these problems The method of overmolding a thermoplastic tip on a hollow thermosetting composite hollow section according to the invention is characterized in that it has the following steps: : profile machining of the thermosetting composite profile on the injection zone, positioning of the plug in the profile, 3036644 2 - thermal conditioning of the assembly of the profile and the plug, - thermoplastic composite injection of the nozzle for creating the junction of the profile, the plug and the tip.This process is simple because it requires few steps but it allows t to obtain sets resistant to high tensile strength, compression, temperature gradient and with materials of different expansion coefficients. The plug 10 will preferably have a length greater than or equal to the length of the injection zone in order to withstand the injection pressure exerted on the walls of the profile. The profile may be made of thermosetting carbon pultruded or not. The machining is performed outside the profile but a second machining inside can also be considered. The shape of the tip will be adapted to allow connection with the peripheral structures of connecting rods. Advantageously, the method comprises a step of chemical treatment of the profile in the injection zone. This chemical treatment after machining of the profile in the machined part of the profile may involve the use of a solvent, an adhesive or a wetting agent. This treatment will improve the connection between the profile and the tip. Optionally, the method comprises a step of laser treatment of the profile in the injection zone. According to a first variant, the positioning of the plug is done directly on the profile. The plug is placed in the profile before it is placed in the injection tool. In this case the plug will preferably have a peripheral rim. According to a second variant, the positioning of the plug is done by positioning it in an injection tool and then installing the profile in the injection tool. In this case, the cap may be hollow and threaded to be held in the tool, it will then suffice to insert the profile around the cap. The invention also relates to an assembly comprising a hollow section of thermosetting composite of inner diameter D1 and outer diameter D2 and a thermoplastic tip, it is characterized in that it comprises a plug disposed inside the profile and that the profile includes a machined portion at one end of the profile. The assembly may be in particular a rod made from a hollow section which may be of tubular shape (with a circular, square, rectangular, triangular profile, of flared or non-flared shape, etc.) and on which a thermoplastic tip, composite or not, is overmolded. The plug is placed in the profile on the molded side to prevent the profile from filling. The plug has at least a portion of its outer profile complementary to the profile of the profile and of substantially identical size to the butcher. The plug has a length greater than or equal to the length of the overmoulded portion of the overmoulded profile and the tip. It thus has a dual function of closing the profile and taking up the radial forces exerted during the injection on the walls of the profile. The profile therefore remains largely empty, which allows to obtain a piece of low weight, reduced costs because there is less material. The profile may be made of thermosetting carbon and be obtained by pultrusion. According to a particular arrangement, the machined part of the profile is pierced. These holes will allow the thermoplastic material to enter the profile until reaching the cap, which improves the strength of the assembly. In this case, an internal machining profile is interesting because the contact surface of the thermoplastic material with the profile is then more important.
    [0003] According to a second variant, the machined portion of the profile has grooves or circular grooves helicoidal or not. These grooves may have different profiles: V, square, pentagonal, rounded, etc. It is also possible to provide a single recess. According to a third variant, the machined part of the profile has received a laser treatment. The laser treatment makes it possible to make streaks of very small dimensions. It is possible to provide an additional chemical bond on the machined part of the profile. According to a particular characteristic, the plug has an outside diameter d1 smaller than the inside diameter D1 of the profile over a portion of its length. This leaves a space between the profile and the plug where the thermoplastic material can enter if the profile is perforated or, where the profile may undergo a slight deformation during the injection of the thermoplastic material. According to another particular characteristic, the plug has a peripheral edge of diameter d2 greater than the outside diameter D2 of the profile. This allows it to hold on the edge of the profile and avoid sinking into the profile during the injection of thermoplastic. The plug may have parts of smaller dimensions than those of the inside of the profile and in this case 25 it will be held during injection in the injection tool itself. Other advantages may still be apparent to those skilled in the art on reading the examples below, illustrated by the appended figures given by way of example: FIG. 1 is a first example of a profile according to the invention FIG. 2 is a third example of a profile according to the invention; FIG. 4 is a section of a first embodiment of the front assembly; FIG. 5 is a cross-section of a second embodiment of the assembly before the injection according to the invention; FIG. 6 is a partial sectional view of the assembly of FIG. Figure 4 after the injection, Figure 7 is a sectional view of an assembly 10 after the injection. The profile 1 illustrated in FIG. 1 is a hollow tube made of thermosetting composite material, for example thermosetting carbon, whether or not it is produced by pultrusion, with a machined end with holes 10. These holes 10 will allow the thermoplastic material to pass through. In Figure 2 the profile 1 has one end with grooves 11. The length 1 of the portion with grooves will preferably be substantially the same length as the injection zone 13 of the thermoplastic material. In Figure 3, the section 1 has one end with asperities 12, they may be performed by machining or laser. The surface of the asperities will preferably be substantially the same length 1 as the injection zone 13 of the thermoplastic material. Other forms of surfaces are also possible. FIG. 4 shows a section of a section made of a thermosetting composite material with a first type of plug 2 made of thermoplastic material inserted in the profile 1 30 under the injection zone 13 corresponding to the part of the section 1 comprising the end machined or with furrows or asperities. The plug 2 comprises a tip 20 whose diameter is substantially equal to the inner diameter D 1 of the profiled section 1 in order to seal the section 1 to the thermoplastic material which will be injected by plugging the opening. Here the plug 2 will be held by the injection tool in the profile 1, for example by an internal thread (not shown). There remains a space 15 between the section 1 and the plug 2. In FIG. 5, it is a section of a tube made of thermosetting composite material with a second type of plug 3 made of thermoplastic material with a tip 30 of 10 diameter. substantially equal to the inner diameter D1 of the profile 1 and a peripheral edge 31 of diameter greater than the outer diameter D2 of said profile 1 and bearing on its end 14. It is the peripheral edge 31 which holds the plug 3 at the end of the profile 1 There remains a gap 15 between profile 1 and plug 3. FIG. 6 shows the partial section of profile 1 of FIG. 1 with plug 2 of the first type after injection of the thermoplastic material constituting tip 4. The thermoplastic material has entered the holes 20 to fill the space 15 which allows a better adhesion of the tip 4 to the profile 1. Figure 7 is a section of a section of Figure 1 with a plug 3 second The thermoplastic material constituting the tip 25 has been molded around the profile 1 in the machined part. The implementation of the method according to the invention takes place in the following way: one starts from a profile 1, one carries out a machining such as that of the figures 1 to 3, then one inserts a plug 2 in the tool of injection for example by screwing on an element of the tool, then the profile 1 in the injection tool as in Figure 4, or, we place the plug 3 in the profile 1 as in Figure 5 and then the placed in the injection tool, thermal condition of the assembly of the profile 1 and the plug 2 or 3 in said injection tool is then made, then the injection of the thermoplastic material into a mold of the shape of the nozzle 4 or 5. Depending on the shape of the machining of the profile, the thermoplastic material will enter the holes 10, or the grooves 5 11, or between the asperities 12. Of course, one will make a mouthpiece at each end of the section 1 to make a connecting rod.
    权利要求:
    Claims (10)
    [0001]
    REVENDICATIONS1. Method of overmoulding a thermoplastic tip (4, 5) on a hollow section (1) made of thermosetting composite, characterized in that it has the following steps: machining of the shape (1) of thermosetting composite on a zone of injection (13), - positioning of the plug (2, 3) in the profile (1), - thermal conditioning of the assembly of the profile (1) and the plug (2, 3), - thermoplastic composite injection of the tip (4, 5) for creating a junction of the profile (1), the plug (2, 3) and the tip (4, 5).
    [0002]
    2. Method according to claim 1, characterized in that it comprises a step of chemical treatment of the profile (1) in the injection zone (13).
    [0003]
    3. Method according to one of the preceding claims, characterized in that it comprises a laser treatment step of the profile (1) in the injection zone (13).
    [0004]
    4. Method according to one of the preceding claims, characterized in that the positioning of the plug (3) is directly on the profile (1). 30
    [0005]
    5. Method according to one of claims 1 to 3, characterized in that the positioning of the plug (2) is done by positioning it in an injection tool and then installing the profile (1) in the injection tool. 25 3036644 9
    [0006]
    6. An assembly comprising a hollow thermoset composite hollow profile (1) with an inside diameter D1 and an outside diameter D2 and a thermoplastic end-piece (4, 5), characterized in that it comprises a plug (2, 3) arranged on the outside. the profile (1) and that the profile (1) comprises a portion machined at one end of the profile (1).
    [0007]
    7. Assembly according to the preceding claim, characterized in that the machined part of the profile (1) is pierced.
    [0008]
    8. Assembly according to claim 6, characterized in that the machined part of the profile (1) has received a laser treatment. 15
    [0009]
    9. An assembly according to claim 7, characterized in that the plug (2, 3) has an outer diameter d1 less than the inner diameter D1 of the profile (1) over a portion of its length. 20
    [0010]
    10. Assembly according to one of claims 6 to 9, characterized in that plug (3) has a peripheral edge of diameter d2 greater than the outer diameter D2 of the profile (1).
    类似技术:
    公开号 | 公开日 | 专利标题
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    FR2803363A1|2001-07-06|CONNECTING DEVICE FOR TWO PIPES OF COMPOSITE MATERIAL BASED ON THERMOPLASTIC MATERIAL
    EP0019256B1|1982-12-15|Socketed ductile cast iron pipe
    EP0864798B2|2009-03-25|Method for connecting a hose to a rigid pipe; coupling and retaining ring for carrying out the method
    FR2942163A1|2010-08-20|PIECE OF COMPOSITE MATERIAL, ROD IN COMPOSITE MATERIAL AND METHOD OF MANUFACTURING THE SAME
    EP1010930A1|2000-06-21|Flexible composite for the transport of fluid and method of forming the flexible composite
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    EP2146128A2|2010-01-20|Hose for an automobile air-conditioning or power-steering circuit
    FR2605709A1|1988-04-29|Moulded connection end-piece for tubes, flexible piping and the like
    FR2691519A1|1993-11-26|Pipe end joint, e.g. for metal pipes
    EP2581197B1|2020-05-20|Method for manufacturing a plastic connector and connector obtained thereby
    BE875898R|1979-08-16|SEAL FOR THERMOPLASTIC MULTI-WALL PIPES AND PROCESS FOR ITS PRODUCTION
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    EP0610103A1|1994-08-10|Method for providing a composite tube with a socket, and socket so obtained
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    FR2874074A1|2006-02-10|Seal for chamfered ends of tubular construction components, especially pipes, comprises elastomer seal element and thrust ring with angled sides
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    EP1248030A1|2002-10-09|Flexible pipe used as a valve and its method of manufacturing
    同族专利:
    公开号 | 公开日
    BR112017025804A2|2018-08-07|
    FR3036643A1|2016-12-02|
    JP6788618B2|2020-11-25|
    CN108025467A|2018-05-11|
    JP2018533497A|2018-11-15|
    WO2016192888A1|2016-12-08|
    MX2017015594A|2018-08-23|
    CA2987540C|2022-01-11|
    CA2987540A1|2016-12-08|
    FR3036644B1|2017-06-23|
    US20180126613A1|2018-05-10|
    CN108025467B|2020-12-29|
    US10987836B2|2021-04-27|
    EP3302916A1|2018-04-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102012018804A1|2012-09-22|2014-03-27|Daimler Ag|Method for manufacturing structural component from fiber-reinforced plastic for motor vehicle, involves covering round molded hose with fiber reinforced material to form fiber-composite semi-finished product|
    DE102012021493A1|2012-10-31|2014-04-30|Daimler Ag|Cross member arrangement and manufacturing method|WO2020148055A1|2019-01-16|2020-07-23|Zf Friedrichshafen Ag|Chassis component for the articulated connection of components in a chassis of a vehicle and method for producing such a chassis component|US4185472A|1978-03-27|1980-01-29|Celanese Corporation|Fiber reinforced composite shaft with metallic connector sleeves mounted by radial pin interlock|
    JPS6354926B2|1981-12-25|1988-10-31|Mikuni Plastic Kk|
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    CN2634070Y|2003-02-27|2004-08-18|北京创业玻璃钢门窗有限公司|Thermosetting glass fiber reinforced plastic and plastic coextruded composite door and window section bar|
    CN2608647Y|2003-03-05|2004-03-31|北京创业玻璃钢门窗有限公司|Thermo setting glass reinforced plastic and plastic coextrusion composite door window structural section|
    FR2873057B1|2004-07-15|2007-11-09|Epsilon Composite Sarl Sarl|PROCESS FOR MANUFACTURING PULTRUSION COMPOSITE TUBES AND TUBES OBTAINED|
    DE102011075688A1|2011-05-11|2012-11-15|SchäferRolls GmbH & Co. KG|Shaft assembly and method of making a shaft assembly|
    CN102774038A|2012-07-06|2012-11-14|上海复合材料科技有限公司|Pultruded special-shaped surface composite skin-core structure profile|
    US8876425B2|2012-07-12|2014-11-04|Shoals Tubular Products, Inc.|Union between dissimilar materials|
    DE102012223674A1|2012-12-19|2014-03-06|Voith Patent Gmbh|Carbon fiber reinforced plastic made drive shaft, has bolts that connect shaft and force introduction element in order to transmit torque, where transmission element comprises radial blind hole in which respective bolt is inserted|
    EP2899100B1|2014-01-27|2018-06-27|MAGNA STEYR Fahrzeugtechnik AG & Co KG|Bonded joint and bonding method of two hollow profiles|
    US10138925B2|2014-05-26|2018-11-27|Fujikura Rubber Ltd.|FRP drive shaft|CN111059137A|2019-11-14|2020-04-24|中国商用飞机有限责任公司北京民用飞机技术研究中心|Connecting structure of composite material rod piece and metal joint and forming method|
    WO2021160941A1|2020-02-14|2021-08-19|Epsilon Composite|Length-adjustable connecting rod provided with a resistive torque device|
    法律状态:
    2016-03-14| PLFP| Fee payment|Year of fee payment: 2 |
    2016-12-02| PLSC| Publication of the preliminary search report|Effective date: 20161202 |
    2017-02-27| PLFP| Fee payment|Year of fee payment: 3 |
    2018-03-27| PLFP| Fee payment|Year of fee payment: 4 |
    2020-06-29| PLFP| Fee payment|Year of fee payment: 6 |
    2021-06-28| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1554954A|FR3036643A1|2015-06-01|2015-06-01|OVERMOUGH TIP|US15/579,182| US10987836B2|2015-06-01|2016-04-19|Hollow profile member such as a tube made of thermosetting composite materials and corresponding method|
    CA2987540A| CA2987540C|2015-06-01|2016-04-19|Hollow profile member such as a tube made of thermosetting composite materials and corresponding method|
    JP2017563124A| JP6788618B2|2015-06-01|2016-04-19|Hollow profile members such as tubes made of thermosetting composites and corresponding methods|
    CN201680041096.3A| CN108025467B|2015-06-01|2016-04-19|Hollow profile element, such as a tube, made of a thermosetting composite material and corresponding method|
    BR112017025804A| BR112017025804A2|2015-06-01|2016-04-19|? overmolding process of a thermoplastic ferrule over a hollow thermosetting composite profile, and together?|
    PCT/EP2016/058674| WO2016192888A1|2015-06-01|2016-04-19|Hollow profile member such as a tube made of thermosetting composite materials and corresponding method|
    MX2017015594A| MX2017015594A|2015-06-01|2016-04-19|Hollow profile member such as a tube made of thermosetting composite materials and corresponding method.|
    EP16719351.5A| EP3302916A1|2015-06-01|2016-04-19|Hollow profile member such as a tube made of thermosetting composite materials and corresponding method|
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