Device for assembling two parts made from thermoplastic materials by means of laser-transparent welding, assembly method and associated clamping fitting
一种激光透射焊接、组装设备的技术，应用在家用元件、车辆部件、运输和包装等方向，能够解决增加复杂性、不允许大的灵活性、外观质量缺陷等问题
Active Publication Date: 2013-02-27
RENAULT SA
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Problems solved by technology
It is worth noting that this leads to the main danger of marking the fitting and thus creating a defect in terms of cosmetic quality
[0009] In addition, the question arises of the reliability and ease of mounting, clamping and securing the assembled fittings
Similarly, the controlled pressurization described in document EP 1 777 057 is not optimal, since it requires many accessories, which increases the complexity and considerably increases the price of such an assembled device
Furthermore, this pressurization by means of the balls described in document EP 1 440 784 does not allow great flexibility in the choice of dimensions and materials of the fittings to be assembled
Method used
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[0061] Referring to these figures, the assembly device 10 according to the invention is intended for assembling two fittings made of thermoplastic material by laser transmission welding. The assembly device 10 according to the invention takes into account more specifically the limiting factors related to the materials of the fittings to be assembled and to the associated laser welding method, namely the difference in materials and their rigidity, the fact that one of the two fittings is for example a cosmetic fitting and the bond must be perfect at the weld interface of the two fittings. More specifically, the assembly device 10 according to the invention is, for example, intended to assemble a trunk lid of a motor vehicle.
[0062] In the following description, expressions such as "rear" and "front", "left" and "right", "top" and "bottom", and orientations of "portrait", "landscape" and "vertical" will be Used in a non-limiting manner by reference to the X, Y, Z datum trihed...
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The invention relates to a device (10) for assembling a first upper transparent part (11) to a second lower absorbent part (12), said parts being positioned on a support (13), which device comprises a means (14) for projecting a laser beam (F) onto the upper part (11), first clamping means (15, 16) for geometrically referencing the assembly formed by the two parts (11, 12) and positioned on the support (13), second clamping means (18, 20) exerting a pre-determined stress on the aforementioned assembly of parts (11, 12), and a management system (24) associated with the second clamping means (18, 20), adjusting the stress exerted at the pre-determined welding interface (17). The assembly method of the invention is intended for the laser-transparent welding of two parts (11, 12) assembled using one such assembly device (10). The clamping fitting (20) of the invention is intended to apply the stress exerted at the welding interface (17).
Description
technical field [0001] The invention relates to a device for the assembly of two fittings by laser transmission welding, a first transparent top fitting is positioned on a second absorbing bottom fitting, the assemblies of the two fittings are positioned on a laser On the welded support, the assembly device comprises a device for projecting a laser beam on the top surface of said top fitting, and assembly means capable of holding the assembly of the two fittings assembled together on the support. [0002] The invention also relates to a method for assembling two parts by laser transmission welding, a first transparent top part being positioned on a second absorbent bottom part, the assemblies of the two parts being positioned on a Laser-welded brackets and assembled together on the brackets by means of such an assembly device. [0003] The invention also relates to a clamping end piece associated with such an assembly device intended for laser transmission welding of two fitt...
Claims
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IPC IPC(8): B29C65/16B29C65/78B60J5/10
CPCB29C43/58B29C66/81463B29C65/1635B29C66/80B29C66/9241B29C66/8167B29C66/54B29C65/1654B29C66/92613B29C66/131B29K2101/12B29K2023/12B29C66/92B29L2031/30B29K2309/08B29C66/8161B29C66/8145B29C66/112B29C66/349B29C66/81815B29C66/836B29C66/3494B29C66/92431B29C65/7844B29C66/863B29K2077/00B29L2031/724B29K2105/06B29C66/73921B29K2995/0027B29C66/71B29C66/7212B29C65/00
Inventor J·G·凯尔比盖H·盖尔默L·蒂拉多
Owner RENAULT SA