• 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:
    Summary A composite insert part (100) having at least one contact element (20) of metal as cast in by means of at least one lead casting (10). The composite insert part (100) is characterized in that the pre-molding has a first three-dimensional sealing surface (11) against a injection molding tool (40), a stiffening (30) of the contact element (20) being formed over the transition area of the pre-molding (10) with the injection molding tool (40).
    公开号:SE539047C2
    申请号:SE1450960
    申请日:2012-11-30
    公开日:2017-03-28
    发明作者:Kunert Peter；Klimaj Gabor
    申请人:Bosch Gmbh Robert；
    IPC主号:
    专利说明:

    Description Title Composite insert and method for manufacturing a thermoplastic device The invention relates to a composite insert. The invention further relates to a method of prefabrication of a thermoplastic device with a cavity for a plug.
    State of the art In recent generations of sensors in the motor vehicle sector, the technology "2k direct casting" is known. Then the sensor's electronics come into contact with insert parts in a separate manufacturing station, where these insert parts also form plug contacts. A combination of a sensor and an insert (composite insert) is enclosed with an elastomeric casing and then molded with thermoplastic material around it using a forming tool. To guarantee a trouble-free operation of the sensor, a sensor element must be arranged in a precisely defined position inside the sensor unit.
    Due to the casting with thermoplastic material around, high forces can be exerted against the composite insert part, which can lead to the plug contacts being moved and thereby to deviations from the set position. Thanks to a special design of the composite insert part, the curvature of the composite insert part can in principle be reduced, but the plug contact area usually constitutes a weak spot in a sensor which is manufactured in this way.
    From DE 10 2006 062 311 A1 a casing with an insert part of metal is known, where the insert part of metal is at least partially encased by the casing. A housing which is not electrically conductive thus immediately and at least partially encloses the metal insert part.
    Content of the invention The object of the invention is to provide an improved manufacturing method for manufacturing an thermoplastic device with a cavity for a plug.
    The task is solved with a composite insert part which has at least one contact element of metal which has been molded around with a pre-casting. The composite insert part is characterized in that the pre-molding has a first three-dimensional sealing surface against a injection molding tool, where a stiffening of the contact element over the transition area of the pre-molding has been formed with the injection molding tool.
    By means of the, according to the invention, increased stiffness of the at least one metallic contact element, a higher bending strength is achieved for the composite insert part during the manufacturing process, which is favorable. In this case, an improved sealing of the composite insert part is achieved during single molding of the composite insert part which has been inserted into the molding tool by means of the first three-dimensional sealing surface of the composite insert part. A favorable result of this specific design of the composite insert part is that it is possible to manufacture a thermoplastic device with a cavity for a plug socket without or with a greatly reduced number of injection molding defects.
    A preferred embodiment of the composite insert part according to the invention is characterized in that the first three-dimensional sealing surface has a tapered design which extends away from the transition area with the injection molding tool.
    In this way, the composite insert part resp. injection molding tool imperfections resp. manufacturing tolerances are mutually compensated, whereby adverse effects of the said manufacturing tolerances of the elements used are substantially eliminated.
    A preferred embodiment of the composite insert part according to the invention is characterized in that the angles of the tapers of the first three-dimensional sealing surface are formed in a range of approximately 5 degrees to approximately 10 degrees. Thanks to such a design of the angles on the tapers of the first three-dimensional sealing surface, extra good contact is achieved between the composite insert part and the injection molding tool.
    A further preferred embodiment of the composite insert part is characterized in that the abutment surfaces on the first three-dimensional sealing surface are adapted to the abutment surfaces on a second three-dimensional sealing surface on the injection molding tool. In this way a particularly well-designed contact-fitting connection is achieved between the composite insert part and the injection molding tool, which leads to a particularly error-free manufacture of the thermoplastic device with a cavity for a plug contact is achieved.
    According to a further aspect of the invention, there is provided a method of manufacturing an thermoplastic device having a cavity for a plug containing the following steps: inserting a composite insert into an injection molding tool, wherein a transition area between the composite insert and the injection mold is substantially completely sealed. the three-dimensional sealing surfaces of the insert and the injection molding tool, wherein a stiffening of at least one contact element of metal inside a pre-molding is formed over the transition area; 3 - molding around the composite insert part and the injection molding tool with thermoplastic material by means of a molding tool; and - removal of the injection molding tool.
    With the method according to the invention, it is possible in an advantageous manner to manufacture substantially faultless thermoplastic components with a cavity for a socket.
    This is achieved mainly by two design measures, which relate to a stiffening of the transition area between the composite insert part and the injection molding tool. In this case, three-dimensional sealing surfaces are provided both on the composite insert part .
    In this way, substantially no thermoplastic mass can penetrate between the composite insert part and the injection molding tool, which supports a substantially error-free manufacture of the cavity of the thermoplastic component group for a plug.
    The invention is described below in detail with further features and advantages with the aid of several figures. In this case, all the described or illustrated features constitute the object of the invention carefully or in any combination, regardless of their summary in the claims or in the references thereto, and regardless of how they have been formulated resp. illustrated in the description resp. in the drawings.
    Figures Fig. 1 shows a composite insert part in accordance with the prior art.
    Fig. 2 shows a conventional composite insert part which has been inserted into a injection molding tool during a casting.
    Fig. 3 shows an embodiment of a composite insert part according to the invention.
    Fig. 4a shows an embodiment of a composite insert part according to the invention pre-insertion in an injection molding tool.
    Fig. 4b shows an embodiment of a composite insert part according to the invention after insertion into an injection molding tool. Fig. 5 shows a thermoplastic component with a cavity for a plug which is manufactured according to the method of the invention.
    Fig. 1 shows a perspective view of a composite insert part 100 in accordance with the technical position. The composite insert part has an electronic device 21 (for example electronic sensor) which is held by tabs resp. metal stirrups on both sides of the composite insert and have electrical contact. The metal tabs are formed as metal contacting elements 20 (eg pins or contacts of a Cu alloy) on one end of the composite insert 100 facing a plug (not shown). The contacting elements of metal 20 are intended to be used for contacting the electronic device 21 by means of the plug. A section of the composite insert 100 is molded by means of a so-called pre-molding 10 which is preferably made of elastomer. formed as a jacket The pre-molding 10 is arranged in a transition area on the composite insert part 100 against an injection molding tool Fig. 1), the injection molding tool 40 for a final molding of the entire composite insert part 40 (not shown in where the transition area is a sealing surface with a thermoplastic 100). The transition area is essentially a flat surface which is only interrupted by two small shell structures for the contact elements of metal 20 ("trousers"). The mechanical stability of the composite insert 100 is mainly affected by the design of the said parts of metal by a targeted design of the flaps, in particular by a design of stiffeners 30 of the metal tabs, a flexural stiffness of the composite insert 100 can be increased.
    Fig. 2 shows a weak spot in a connection of a conventional composite insert part 100 with injection molding tool 40. The figure shows greatly simplified a conventional composite insert part 100 which is inserted into an injection molding tool 40 during an ongoing casting. Due to the fact that a high injection pressure is exerted on the composite insert 100 during injection molding, the flexural stiffness of the composite insert 100 cannot be transferred to the injection molding tool 40 via the pre-casting 10. This is indicated in Fig. 2 by an enelliptical marking showing a slight inclination of the pre-casting. the intermediate lead casting 10 and the injection molding tool 40 resulting therefrom. During cross-loading, the composite insert part 100 can be deformed despite the flexural rigid design of the metal parts in the transition area to the injection molding tool 40. A disadvantage therewith is that thermoplastic mass can undesirably penetrate into the gap. In this way can injection molding defects, e.g. in the form of castings of castings, points of incidence, etc. arise, which greatly reduces resp. even eliminates the finished thermoplastic component group operability if the plug cannot contact the metal contact elements 20 or if there is very poor contact. According to the invention, it is now provided that the composite insert 100 is designed in such a way that an improvement of the thermoplastic manufacturing process becomes possible thanks to an improved connection between the composite insert 100 and the injection mold 40. Fig. 3 shows an embodiment of the composite insert 100 according to the invention. an extension resp. continuation of the mechanical reinforcements resp. the stiffeners 30 over the transition area co-injection molding area 40 (not shown in Figure 3). One of the extensions of the stiffeners 30 is clarified by an elliptical marking. In addition, the pre-casting 10 now has a first three-dimensional sealing surface 11. Thanks to the continuation of the stiffening 30 of the metal parts above and past the transition area and to some extent all the way into the injection molding tool 40, a mechanical deformation of the system composite insert 100 / injection molding tool 40 can be greatly reduced. eliminated. By means of the rigidity of the composite insert 100 and the first three-dimensional sealing surface 11, which has a counterpart in a second three-dimensional sealing surface 41 ("negative contour") in the injection molding tool 40, a continuous rigid system is arranged. By the design of the abutment surfaces of the first three-dimensional sealing surface 11 as tapered surfaces in the direction away from the injection molding tool 40 resp. as surfaces facing a central area of the application molding, an additional contact-closing insert connection is achieved between the composite insert part 100 and the injection molding tool 40.
    Fig. 4a shows an embodiment of the composite insert part 100 before insertion into a molding tool 40, which is designed as a metal tool for forming a cavity for a plug in a thermoplastic component group. It is recognizable that the injection molding tool 40 has a second three-dimensional sealing surface 41 as a counter surface to the first three-dimensional sealing surface 11 of the composite insert part 100, where the second three-dimensional sealing surface 41 is formed in accordance with the first three-dimensional sealing surface 11. the sealing surfaces on the first three-dimensional sealing surface 11 resp. the second three-dimensional sealing surface 41 is preferably designed as inclined contact surfaces, where the angles in relation to the longitudinal direction of the injection molding tool 40 are composed of the insert part 100 and preferably are formed in a range of about 5 degrees to about 10 degrees.
    Fig. 4b shows an embodiment of a composite insert part 100 which is inserted into a single-injection tool 40. It is recognizable that cantilevers on the side of the casing 10, which have the stiffeners 30 of the metallic contact elements 20 in their interior, are applied to the abutment of the second three-dimensional sealing surface 41. In this way, a generally rigid, effectively sealed unit is arranged with the composite insert 100 and the injection mold 40. A thermoplastic mass formed under high pressure thus does not adversely affect the contact closure between the composite insert 100 and the injection mold 40. As a result, a substantially faultless thermoplastic component group having a cavity for a plug formed inside it can be manufactured.
    Fig. 5 shows a perspective view of a thermoplastic component group resp. a device 200 made by the method of the invention. The thermoplastic device 200 has a cavity for a plug 210 which is formed by means of the injection molding tool 40 (not shown in Fig. 5). For the manufacture of the cavity of the plug 210 inside the dentermoplastic device 200, an injection molding tool 40 in the form of a metal plug core is preferably used. The plug core is for holding the composite insert 100 under the injection mold and forming a cavity for a plug 210 inside the dentermoplastic device 200. The outer molding of the thermoplastic device 200 is achieved by means of molding injection molding tools not shown in Fig. 5 because they are not critical to the invention.
    In the interior of the thermoplastic device 200, it is possible to see the composite insert 100 according to the invention with the guide jig 10 specifically designed for the manufacturing purpose. For an operative operation of the thermoplastic device 200 with the electronic device 21 enclosed therein, the specific design of the composite insert 100 is insignificant. A plug (not shown in Fig. 5) to be inserted into the dentermoplastic device 200 is inserted on the contact elements 20 next to the abutment molding stop 10, which results in a secure electrically conductive connection being arranged between the electronic device 21 and the plug. In this respect, a particular advantage of the method according to the invention is that a thermoplastic component group 200 is arranged with a cavity through a single-plug contact 210, the contact element 20 of which can have a reliable electrical contact with a single-plug contact.
    In summary, an improved manufacturing method is provided for the manufacture of an thermoplastic component group with a cavity for a plug. A particular advantage of the invention is that a functional thermoplastic device can be created in series, where a cavity of a plug in the thermoplastic component is substantially free of injection molding defects, by means of the method according to the invention. In this way provided the improved injection molding tool for reducing bends in the socket area in a connecting concept between the composite insert part and advantageously. This is of crucial importance for the electronic device built into the thermoplastic device to function properly.
    One consequence is that the profitability of the manufacturing process can be significantly increased thanks to the fact that the number of discarded goods can be reduced resp. completely avoided. For a person skilled in the art, it is a matter of course that the features of the invention can be combined with each other resp. varied in a suitable manner without departing from the spirit of the invention.
    权利要求:
    Claims (7)
    [1]
    Composite insert part (100) having at least one metallic contact element (20) cast by means of a pre-casting (10), characterized in that the pre-casting (10) has a first three-dimensional sealing surface (11) against an injection molding tool (40), wherein a stiffener (30) of the contact element (20) is formed over the transition area of the casing (10) with the injection molding tool (40).
    [2]
    Composite insert (100) according to claim 1, characterized in that the first-dimensional sealing surface (11) is tapered in the direction away from the transition area with the injection molding tool (40).
    [3]
    Composite insert (100) according to claim 2, characterized in that the angle from the tapers of the first three-dimensional sealing surface (11) is formed in a range of about 5 degrees to about 10 degrees.
    [4]
    Composite insert part (100) according to one of Claims 1 to 3, characterized in that the abutment surfaces of the first three-dimensional sealing surface (11) are adapted to the three-dimensional abutment surfaces of a second sealing surface (41) to the injection molding tool (40).
    [5]
    A method of manufacturing a thermoplastic device (200) with a hole for a plug (210) having the following steps: - inserting a composite insert (100) into an injection molding tool (40), a transition region between the composite insert (100) and the injection molding tool (40) is substantially completely sealed by means of three-dimensional sealing surfaces (11, 41) on the composite insert part (100) and the injection molding tool (40), wherein at least one stiffening of a metallic contact element (20) is formed inside a lead casting area (10) injection molding of the composite insert (100) and injection molding tool (40) with thermoplastic material by means of a molding tool and removal of the injection molding tool (40).
    [6]
    The method of claim 5, wherein the injection molding tool (40) is configured as a device preforming a hole for a plug (210). 9
    [7]
    Thermoplastic device (200) with a hole for a plug (210) with a single insert (100) according to any one of claims 1 to 4 and manufactured according to claim 5 or 6.
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    同族专利:
    公开号 | 公开日
    US9276351B2|2016-03-01|
    SE1450960A1|2014-10-22|
    CN104067453A|2014-09-24|
    DE102012200918A1|2013-07-25|
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    US20150079828A1|2015-03-19|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102012200918A|DE102012200918A1|2012-01-23|2012-01-23|Inlay composite part|
    PCT/EP2012/074024|WO2013110376A1|2012-01-23|2012-11-30|Composite insert|
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