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Device for assembling two parts made from thermoplastic materials by means of laser-transparent welding and associated assembly method

A technology of laser transmission welding and assembly equipment, which is applied to household components, vehicle parts, transportation and packaging, etc. It can solve the problems of appearance quality defects, increase the price of assembly equipment, and complicate matters, etc.

Active Publication Date: 2013-03-06
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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
[0013] In addition, the question arises of the reliability and ease of mounting, clamping and securing the assembled fittings
Similarly, the controlled pressurization described more specifically in document EP1777057 is not optimal, since the pressure adjusts itself during laser welding, which complicates matters and significantly increases the price of such an assembly device

Method used

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  • Device for assembling two parts made from thermoplastic materials by means of laser-transparent welding and associated assembly method
  • Device for assembling two parts made from thermoplastic materials by means of laser-transparent welding and associated assembly method
  • Device for assembling two parts made from thermoplastic materials by means of laser-transparent welding and associated assembly method

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Embodiment Construction

[0039] see Figure 1 to Figure 6, 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, as Figure 4 and Figure 5 As indicated, the assembly device 10 according to the invention is, for example, intended to assemble a trunk lid or a tailgate of a motor vehicle.

[0040] 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 It is used by...

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Abstract

The invention relates to a device (10) for the laser welding assembly of a first upper transparent part (11) to a second lower absorbent part (12), comprising a means (14) for projecting a laser beam (F) onto the upper part (11), first clamping means (15) for geometrically referencing the two parts (11, 12), second clamping means (19) and first adjustment means (20) associated with the second flanging means (19). The first adjustment means (20) comprise a plurality of mobile members (21) which can be actuated independently of one another at a pre-determined welding interface (17) between the two parts (11, 12) and which are used to adjust a pre-determined stress (f2) at said 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).

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 a welded support, the assembly device comprising 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, and include at least: [0002] - a first clamping device intended to ensure the geometric reference positioning of the assembly of the two fittings positioned on said support, [0003] - second clamping means intended to exert a predetermined force on the assembly of the two fittings positioned on said support, [0004] - and first adjustment means associated with said second clamping means. [0005] The invention also relates to a method for assembling two fittings by laser transmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/16B29C65/78B60J5/10
CPCB29L2031/30B29C65/7844B29K2309/08B29C66/81463B29C65/1635B29C66/112B29C66/349B29C66/80B29C66/9241B29C65/7841B29C66/92B29C66/3494B29C65/16B29C66/54B29C66/006B29L2031/724B29K2077/00B29K2105/06B29C66/301B29C65/1654B29C66/131B29K2101/12B29K2023/12B29C66/71B29C66/7212B29C66/73921B29C66/8242B29C66/8322B29K2995/0027
Inventor J·G·凯尔比盖H·盖尔默L·蒂拉多
Owner RENAULT SA
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