Unlock instant, AI-driven research and patent intelligence for your innovation.

Process and device for deposition of glue on a cellular surface

a technology of cellular surface and deposition device, which is applied in the direction of hollow wall articles, nuclear engineering, other domestic articles, etc., can solve the problems of inability to use this method, inability to use it satisfactorily on a single face of the cellular core, and uneven glue strip

Inactive Publication Date: 2006-03-09
AIRBUS OPERATIONS (SAS)
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are disadvantages with this known method.
This makes it impossible to use this method when at least one of the walls of the panel must remain porous after the gluing phase.
Thus, it can only be used satisfactorily on a single face of the cellular core, since the cells have to be open at their opposite end.
Consequently, the glue strip is not uniform and glue may be splashed inside the cells.
This can sometimes result in an incomplete glue strip and a risk of closing off a porous wall added on onto the cellular core later, due to subsequent flow of the glue along the partitions of the cells during final polymerisation.
Firstly, it is long and complex to implement since it includes many additional operations compared with other known gluing methods (placement of porous screens, application of pressure, cooling, removal of screens, etc.).
Furthermore, this technique is more expensive than other known methods since it also needs more glue.
Furthermore, this induces a large quantity of waste (glue and screens) which creates problems with the environment.
Furthermore, as in the previous technique, heating of the cellular core can cause deformations of the core, particularly in the case of complex shapes.
Finally, this technique is difficult to apply to non-plane surfaces, for example concave or convex spherical shaped surfaces.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process and device for deposition of glue on a cellular surface
  • Process and device for deposition of glue on a cellular surface
  • Process and device for deposition of glue on a cellular surface

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0058]FIG. 2 diagrammatically shows a device conform with the invention. This device comprises a support 20 with a shape and dimensions adapted to the cellular structure 10, in which the ends of the walls of the cells are to be covered with glue strips. The case of a plane structure is illustrated, to make the description simpler. As will be seen later, this embodiment is not limited to this type of cellular structure and may also be used in the case of non-plane structures.

[0059] The support 20 is provided with drive and guidance means, diagrammatically illustrated in 22 in FIG. 2. These drive and guidance means 22 are used to displace the support 20 and the structure 10 that it supports along a trajectory, which in this case is approximately straight and horizontal (arrow F1). In the case of a non-plane part, this trajectory may be significantly different as will be understood later.

[0060] The device diagrammatically illustrated in FIG. 2 also comprises a source 24. As will be se...

second embodiment

[0066] In the device according to the invention illustrated diagrammatically in FIG. 3, the support 20 supporting the cellular structure 10 is fixed. This embodiment essentially concerns the case in which the surface of the cellular structure 10 facing the source 24 is plane, or approximately plane. The source 24 then moves above the structure 10 along a trajectory such that the spacing between the source and the said structure remains approximately constant. The upper face of the structure 10 in this case is approximately plane and horizontal, which means that the trajectory followed by the source 24 is straight and horizontal (arrow F2).

third embodiment

[0067]FIG. 4 diagrammatically shows the device according to the invention. This embodiment is an extension of the previous embodiment, in the case in which the top face of the cellular structure 10 is not plane.

[0068] As in the embodiment that has just been described with reference to FIG. 3, the source 24 moves along a straight and horizontal trajectory (arrow F2) above the top face of the structure 10. However, instead of being fixed, the support 20 on which it is installed comprises means of orientation, diagrammatically illustrated in the form of jacks 26 in FIG. 4. These orientation means keep the part of the top face of the structure 10 located facing the source 24 approximately horizontal and at an approximately constant distance from the source 24. The orientation means 26 may be any shape useful to obtain the required result. Advantageously, they are used under the control of a servo control system (not shown) sensitive to signals output by sensors making measurements such ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
angleaaaaaaaaaa
Login to View More

Abstract

A glue film (11) is placed on a cellular structure (10) in order to form a regular glue strip on the edges of the partitions of the cells of this cellular structure (10), and this glue film (11) is heated by a source (24) that emits radiation adapted to reactivity of the glue, to heat it only selectively. The glue thus creeps without significantly triggering polymerisation. The portion of the part located below the source is preferably kept approximately horizontal so that the glue strip is formed under the best possible conditions.

Description

[0001] This application claims priority based on International Patent Application No. PCT / FR02 / 01426, entitled “Process and Device For Deposition Of Glue On A Cellular Surface” by Bernard Colin et al., which claims priority of French Patent Application Serial No. 01 05868, filed on May 2, 2001.TECHNICAL FIELD [0002] The invention relates to a process for distributing glue previously deposited on a cellular surface of a cellular material with tubular cells, without obstructing cells opening up from this surface. [0003] The invention also relates to a device using this process. [0004] The process and device according to the invention are advantageously applicable to the manufacture of sandwich panels comprising a cellular core, such as a honeycomb structure with two opposite faces on which the walls forming the outside skin of the panel are glued. These panels are used in many fields, particularly including the aeronautical and space industries. STATE OF PRIOR ART [0005] Sandwich pane...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): B05B5/00B29C65/52B29D24/00B32B3/12B32B37/14B32B37/16
CPCB29C66/20Y10T156/17B29C66/91221B29D24/005B29L2031/608B32B3/12B32B37/1284B32B37/146B29C66/45B29C65/4835B29C65/526B29C66/91411B29C66/9161B29C66/91216B29C66/961B29C66/729B29C65/00B29C66/7254B29C65/10B29C65/14B29C66/836B29C66/5346B29C66/53462B29C66/112B29C66/114B29C66/24249B29C66/234B29C66/301B29C66/1122
Inventor COLIN, BERNARDDE MATTIA, DENIS
Owner AIRBUS OPERATIONS (SAS)