ES2360549B1 - CHIP INSERTION METHOD FOR IDENTIFICATION OF LAMINATED PARTS - Google Patents

Abstract

Chip insertion method for identification of laminated parts. # It is applied in laminated pieces (1) that are obtained by curbing by depositing different strips forming layers that are subsequently compacted and cured. # The method foresees obtaining a first curb (3) of a suitable minimum thickness in which a recess (4) is made, on which the chip (2) is introduced, which contains information of the piece (1), subsequently placing at least one strip (6) on top of the chip and It performs a first compaction so that the chip (2) is in line with the top layer of the first curb (3) and at the same time the air is removed from the pocket (4). Then a second curb (7) of the rest of the laminate layers and a second compaction is carried out so that the chip (2) is inserted in the laminated part (1). # Preferably it is applied in the aeronautical sector and allows compliance with the standards of existing defectology for the lining parts of aircraft.

Description

obtains a cured piece, for example a coating

Chip insertion method for identifying laminated parts. Object of the invention

The invention relates to a method that aims to allow the use of RFID (Radio Frecuency IDenti fi cation) chip devices in laminated parts, to allow storing all the information related to the part, since its manufacture and throughout its useful life, on the chip. Until its disposal.

The invention is applicable in any sector of the industry in which laminated parts are obtained that are obtained by means of taping, which consists in the deposition of different layers that constitute the laminate, and more specifically it is applicable in the aeronautical sector in the manufacturing process of the aeronautical carbon fiber parts. Background of the invention

In the state of the art it is known to use radio frequency chip devices that are arranged on labels so that the chip allows storing and retrieving data corresponding to the product carrying the tag, for example to transmit the identity of the object and / or data related to it.

In this sense, RFID tags are known by means of which a system is established that allows to know the data related to the product carrying the tag. This system cannot be applied to aeronautical parts, as it does not comply with the defect regulations and also the labels are glued on the surface of the laminate and therefore are exposed to the outside with the risk that this entails; since they can be detached and can also be damaged easily that determine the loss of information of the lining piece. Description of the invention

In order to solve the aforementioned drawbacks, the invention provides a method that allows the insertion of a chip in laminated carbon fiber pieces that are obtained by means of taping, which consists in the deposition of different strips that form layers that are subsequently compacted by means of a vacuum bag, so that the chip is protected inside the laminate. The main novelty of the invention is that the method of manufacturing the laminated part comprises a phase in which a first tape is obtained with a previously calculated thickness that allows a chip to be inserted in the laminate that is being taped and then it practices a recess in the thickness of the first curb with dimensions greater than those of the chip, which subsequently allows the introduction of the chip in the recess practiced. Then the opening of the recess is covered with at least one strip with the lowest curb pressure that can be applied so that wrinkles do not occur. A first compaction phase is then carried out by means of which the thickness of the first curb is reduced to a level where the chip flush with the upper layer of the first curb recess after the first compaction, and at the same time by this first phase of compaction the air is removed from the inside of the recess. Subsequently, a second curb is made of the rest of the layers that constitute the laminate, on the first curb and a second compaction is performed. Subsequently the aeronautical laminate, with the chip inserted in it. The second compaction along with the pressure that is provided in the curing cycle of the piece in the autoclave prevents the formation of wrinkles, bubbles, depressions or bulges of the second curb, leaving it cured without defects and with the chip inserted.

The process of the invention provides that the recessing is carried out by cutting with a blade, which is normally mounted on the same taping head and allows the automatic cutting of the four cuts corresponding to the side walls of the recessing, and subsequently punctured in the surface delimited by the four cuts to then extract the blade with the remaining material establishing the recessed commented.

For this, in one embodiment of the invention, the blade has a triangular configuration whose sides that form the cutting tip are arranged at 15 °.

When, when the excess that determines the recess is removed, a residue remains at the bottom of it, it is manually cleaned by means of a cutter.

As mentioned in the invention, it is of preferable application in the manufacture of aircraft lining parts, which must comply with a defectology regulation, for which they are tested by determining whether the manufactured parts are or not. defective Therefore, the chip must have dimensions that meet the defectology regulations, which in one embodiment of the invention uses a chip with dimensions of 2 x 2 mm. and a recess with dimensions of 2.15 x 2.15 mm., which determines that the chip-recessed assembly complies with the defect regulations when a lining part of an aircraft is manufactured.

On the other hand in the curing of the piece, it is normally subjected to at least a temperature of 180 ° C (depending on the characteristics of the carbon fiber used), so the chip must have a structure that is capable of supporting the minus 180ºC, so that it can work correctly after the manufacturing process of the piece.

The described procedure allows to obtain a laminated part, for example a coating, with an inserted chip in which all the data referring to the manufactured part are stored, both from the manufacturing point of view, indicating which machine is the one that manufactured it , times used, problems occurred, the records of ultrasonic inspections, as well as the data corresponding to the assembly of the parts in the aircraft, such as repairs, revisions, etc. The data of the ultrasonic inspections must be stored throughout the life of the plane to demonstrate in the event of an accident that the part had no problem when it was manufactured. These data are like an “ultrasound” of the coating in which the different defects that it may have, porosities, foreign objects, delaminations, ... The radiofrequency chip allows to write and read the data at any time, by means of the use of a conventional writing / reading gun, which allows incorporating, reading, deleting, updating any necessary data.

Then to facilitate a better understanding of this descriptive report and being part of

3 EN 2360549A1 4

In keeping with it, a series of figures are attached in which the object of the invention has been presented as an illustration and not a limitation.

Brief statement of the figures

Figure 1. - It shows an exploded schematic perspective view in which the first and second curbs and the chip exploded before inserting them into the recess made in the first curb of the coating.

Figure 2.- It shows a schematic view of the detail of the recess with the chip inserted in it and with its opening covered by at least one strip of curb.

Figure 3.- Shows a view of the previous assembly with the chip inserted in the coating, after performing the second compaction.

Figure 4.- It shows a possible example of the knife making by means of which the cut is made to make the recess in the coating. Description of the preferred embodiment

A description of the invention based on the aforementioned figures is made below.

The embodiment of the invention is described for a lining piece (1) that is conventionally obtained by means of a wrapping process that consists of depositing a pre-impregnated carbon fiber strips in resins on a useful way according to different directions that each layer needs to obtain The desired properties. Once the covering (1) has been taped, it is necessary to confer rigidity for which horizontal and vertical stiffeners are used. Once the lining piece (1) with its corresponding stiffeners is prepared, a bag is placed on this assembly with which a vacuum is made to compact the lining piece and avoid porosities, delaminations, etc. Next, the piece is cured by introducing the entire assembly (tool, lining, stiffeners and vacuum bag) in an oven called autoclave to provide the piece with the desired characteristics. During curing the lining piece (1) is subjected to at least 180 ° C and after that it is necessary to remove the vacuum bag.

The method of the invention differs from the conventional one described in that it comprises a first phase of obtaining a curb (3) with a thickness previously calculated so that the chip (2) is inserted inside the lining piece (1) once manufactured Once the taping (3) is obtained, a recess (4) with dimensions greater than those of the chip (2), and with a bottom (4a) is practiced, which allows the subsequent introduction of the chip (2) into the inside of the recess (4).

Next, the opening of the recess (4) is covered with at least one strip (6) of curb with the lowest curb pressure that can be applied so that wrinkles do not occur and a first compaction is carried out with a vacuum bag of the curb ( 3), so that the calculated thickness is reduced to a level at which the chip (2) is flush with the upper layer of said curb (3), and at the same time the air is removed from the inside of the cage (4). Therefore, the calculated thickness must take into account the depth of the recess and how much said depth is reduced when performing the first compaction so that the chip enters with the top layer of the curb (3) after the first compaction.

Then one or more layers of a second curb (7) are arranged on the first curb (3) and then a second compaction is carried out so that the chip (2) is inserted in the lining piece (1) whose second curb ( 7) It is perfectly smooth without wrinkles depressions or protrusions.

As indicated in the procedure of the invention, it is applied to aircraft lining parts, which must comply with regulations regarding defects, for which in the preferred embodiment of the invention the chip (2) has dimensions of 2 x 2 mm and the recess of 2.15 x 2.15 mm., which determines that the coating piece obtained, complies with the defective regulations existing in the aeronautical sector of cladding pieces since they are dimensions are the maximum allowed in which refers to defectology related to foreign objects.

In addition, as already mentioned, the lining piece (1) must undergo a curing process to obtain the desired characteristics, which consists of introducing the piece in an oven at 180º, so the chip (2 ) is designed with a configuration that is capable of withstanding that temperature.

In the preferred embodiment of the invention, the recessing is carried out by means of a triangular blade (8) whose sides that form the cutting tip are arranged at 15 °.

This blade (8) is arranged in an automatic machine by means of which four cuts are applied corresponding to the lateral walls of the recess (4), with a depth that allows to obtain a recess of dimensions greater than those of the chip (2), which it allows the surface delimited by the four cuts to be punctured later, so that when extracting the blade (8) the excess material that defines the recess (4) is extracted.

In the event that when the excess is removed, residues remain at the bottom (4a) of the recess (4), these are manually cleaned by means of a cutting element.

5 EN 2360549A1 6

Claims (9)

1. Chip insertion method for identifying laminated pieces, in which said pieces are obtained by wrapping the different layers that are subsequently compacted; It is characterized in that it comprises the following phases:

-

obtaining a first curb (3) with a previously calculated thickness so that a chip (2) is inserted in the manufactured laminate;

-

make a recess (4) in the thickness of the first curb (3) with dimensions greater than those of the chip (2);

-

insert the chip (2) into the slot (4);

-

cover the opening of the recess (4) with at least one strip (6) of curb,

-

make a first compaction of the first curb (3) with the chip (2) in the sealed pocket (4), so that the previously calculated thickness is reduced to a level at which the chip

(2) housed in the recess (4) flush with the top layer of the first curb (3) after performing said first compaction, and at the same time draw air from inside the recess (4);

-

place at least one layer of a second curb (7) on the first curb (3); Y

-

Perform a second compaction so that the chip (2) is inserted in the lining piece (1) in which the layer of the second curb (7) is flat.

2.

Chip insertion method for identifying laminated parts, according to claim 1, characterized in that the recessing (4) is carried out by cutting with a blade (8).

3.

Chip insertion method for identifying laminated parts, according to claim 2, characterized in that the cutting is carried out by an automatic machine equipped with the blade (8), which applies four cuts corresponding to the side walls of the recess (4) and subsequently click on the surface delimited by the four cuts, then remove the blade (8) with the remaining material.

Four.

Chip insertion method for identifying laminated parts, according to claim 3, characterized in that the blade (8) has a triangular configuration whose sides that form the cutting tip are arranged at 15 °.

5.

Chip insertion method for identifying laminated parts according to claim 3, characterized in that when a residue remains at the bottom (4a) of the recess (4) when extracting the excess material, it is cleaned manually.

6.

Chip insertion method for identifying laminated parts, according to claim 1, characterized in that the chip (2) is a radiofrequency chip and has maximum dimensions of 2 x 2 mm.

7.

Chip insertion method for identifying laminated parts, according to claim 6, characterized in that the recess (4) has a maximum size of 2.15 x 2.15 mm.

8.

Chip insertion method for identifying laminated parts, according to claim 6, characterized in that the chip (2) has a configuration provided to withstand at least 180 ° C of temperature.

 ES 2 360 549 A1    ES 2 360 549 A1   SPANISH OFFICE OF THE PATENTS AND BRAND Application no .: 200931064 SPAIN Date of submission of the application: 26.11.2009 Priority Date: REPORT ON THE STATE OF THE TECHNIQUE 51 Int. Cl.: B29C70 / 30 (2006.01) RELEVANT DOCUMENTS

Category

Documents cited Claims Affected

X

US 2009173443 A1 (KOZLAK DAVID M ET AL.) 07/09/2009, page 1, paragraphs 6, 13 and 14, figures 1 and 2 1-8

TO

WO 2008034948 A1 (UPM RAFLATOC OY ET AL.) 03/27/2008, the whole document 1, 6-8

TO

US 2009177309 A1 (KOZLAK DAVID M) 07/09/2009, the whole document 1, 6-8

TO

EP 1806219 A1 (PLATEX COMPOSITES) 07/11/2007, the whole document 1, 6-8

Category of the documents cited X: of particular relevance Y: of particular relevance combined with other / s of the same category A: reflects the state of the art O: refers to unwritten disclosure P: published between the priority date and the date of priority submission of the application E: previous document, but published after the date of submission of the application

This report has been prepared • for all claims • for claims no:

Date of realization of the report 04.04.2011

Examiner A. Pérez Igualador Page 1/4

REPORT OF THE STATE OF THE TECHNIQUE Application number: 200931064 Minimum documentation sought (classification system followed by classification symbols) B29C Electronic databases consulted during the search (name of the database and, if possible, terms of search used) INVENES, EPODOC State of the Art Report Page 2/4  WRITTEN OPINION Application number: 200931064 Date of Completion of Written Opinion: 04.04.2011 Statement

Novelty (Art. 6.1 LP 11/1986)

Claims Claims 1-8 IF NOT

Inventive activity (Art. 8.1 LP11 / 1986)

Claims Claims 1-8 IF NOT

The application is considered to comply with the industrial application requirement. This requirement was evaluated during the formal and technical examination phase of the application (Article 31.2 Law 11/1986).  Opinion Base.- This opinion has been made on the basis of the patent application as published. State of the Art Report Page 3/4  WRITTEN OPINION Application number: 200931064 1. Documents considered.- The documents belonging to the state of the art taken into consideration for the realization of this opinion are listed below.

Document

Publication or Identification Number publication date

D01

US 2009173443 A1 (KOZLAK DAVID M et al.) 07.07.2009

2. Statement motivated according to articles 29.6 and 29.7 of the Regulations for the execution of Law 11/1986, of March 20, on Patents on novelty and inventive activity; quotes and explanations in support of this statement In the manufacture of three-dimensional objects the identification and tracking of finished objects constitutes a difficulty. Document D01 addresses this problem. It describes a method for manufacturing three-dimensional objects, by the procedure of successive placement of sheets, with a label inserted that identifies the manufactured object. The procedure consists of a stacking sequence comprising the placement of the identification tag in the middle of the process of placing the sheets so that it is embedded in inside. The steps are embodied in the scheme in Figure 1: determination of the overlapping sequence of sheets a starting from the shape of the object and the insert, the first stage of placing sheets until reaching the one on which place the insert and until you reach the sheets surrounding the insert, insert placement, placement of the rest of the sheets until the object is completed. In figures 2A to 2C these steps are also represented. The identifier tag can be, according to this document, an RFID chip. Document D01 comprises the essential steps of the method claimed in the 1st claim: formation of a first layer, formation of a recess, insertion of the chip, continuation of the curb (or laminate). In this first claim it is not specified that the recess is made by cutting material -as if it will be done in the second-, therefore the recess that in D01 is constituted in figure 2A is considered to anticipate the recess claimed in the 1st claim. The method of insertion of the 1st claim differs from document D01 in the following: -The piece is made by overlapping tapes instead of sheets. It is clear that with regard to the insertion of the chip it is indifferent that it is a piece made by rolling or curb. Therefore this difference is not relevant. -The compactions -first and second-. Since the compaction is such an ordinary operation in this field of technique, it is considered obvious for An expert in the field. Regarding the technical characteristics claimed in claim 6 on the RFID chip and its dimensions: Document D01 (paragraph 14 on page 1) contemplates that the insert is an RFID chip. The dimension 2x2 mm is a normal possibility available to the expert in the field. The size of the pocket according to the size of the chip plus a tolerance is also within the reach of the expert in the matter, therefore claim 7 lacks inventive activity. The way of making the recess (claims 2nd, 3rd, 4th and 5th) is to cut and remove part of the material already placed - "... which applies four corresponding cuts to the side walls of the recess and subsequently punctures ... "-. The object technician claimed in the application differs from D01 in that instead of forming the recess by applying material what Conforms by removing already applied material. A person skilled in the art who knew D01, and therefore knew the technical solution of encapsulating the chip in a hole Inside the piece, you could choose between making the hole by providing material around or making the hole by removing material. The Choice of removing the material to constitute the hole would be obvious to the person skilled in the art. In conclusion, all claims of the application (1st to 8th) lack inventive activity (Articles 4 and 8 of the Law on Patents 11/1986). State of the Art Report Page 4/4