| Title of Invention | A METHOD OF PRODUCING HONEYCOMB STRUCTURE |
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| Abstract | The invention relates to a method of producing honeycomb structure which comprises: forming two hexagonal cell metal plates each having uniformly-spaced hexagonal pegs, using a die and a press; applying a fusing material or strong adhesive to outer surfaces of the hexagonal pegs; and overlapping the metal plates such that surfaces of the metal plates, from which the hexagonal pegs are protruded, face each other, and coupling the metal plates such that adjacent ones of the hexagonal pegs of the metal plates are engaged, thereby producing a honeycomb structure having continuoqsly joined cells using a press and a die to form two metal plates that have hexagonal pegs protruding out on one side and applying welding material or some adhesive onto the hexagonal pegs and then joining the two formed metal plates by facing the protruding sides to each other. |
| Full Text | Description A METHOD OF PRODUCING HONEYCOMB STRUCTURE Technical Field The present invention relates to a honeycomb structure that is formed using a press with a die to make two metal plates(2, 6) which have hexagonal pegs positioned at a certain distance from each other, and these plates are joined together into a complete honeycomb structure. Description of Drawings FIG 1 is the position of hexagonal cells on the metal plate A; FIG 2 is the position of hexagonal cells on the metal plate B; FIG 3 shows position of hexagonal cells on both metal plate A and B when one plate is overlapping the other; FIG 4 is the metal plate A with hexagonal pegs formed by a press FIG 5 is the metal plate B with hexagonal pegs formed by a press FIG 6 is the honeycomb structured block in which metal formed plates are joined together. FIG 7 is showing a method of extending the total size of the core block by joining the honeycomb blocks in a zigzag manner. FIG 8 is showing a method of making honeycomb sandwich panel attaching non-woven fabric and face sheets on a core. 2. Metal plate A 4. Position of the hexagonal cells on metal plate A 6. Metal plate B 8. Position of the hexagonal cells on metal plate B 10 Metal plate A + B 12 Position of the hexagonal cells that are made automatically 14 Hexagonal peg 16 Hexagonal cell 18 Hexagonal cells that are made automatically 20 Honeycomb block A 22 Honeycomb block B 24 Non-woven fabric 26 Face sheet Technical Problems Unlike the existing methods, the present invention is using a press to form a honeycomb structure out of many different types of metal plate. However, it seems it is very difficult or impossible to form a honeycomb structure with a single process using a press, because the hexagonal cells within the structure are placed right next to each other sharing the very thin cell-walls among them. Technical Solutions In the present invention, a die is needed to be built for the making of hexagonal cells of the honeycomb structure. Honeycomb structure consists of many hexagonal cells lined up continuously but because the cell walls are so thin, it is nearly impossible to form the structure with a press and a single die in one step. In the present* invention, however, a die is designed and the hexagonal cells on the die are placed at a certain distance from each other, as shown in FIG 1 and FIG 2, so that when the cell positions from those two FIGs are overlapping, the result is a perfect honeycomb shape as shown in FIG 3. This die and a press are used to change the shape of two thin metal plates(2, 6), shown in FIG 1 and FIG 2, into two formed metal plates which have hexagonal pegs(14) protruding out as shown in FIG 4 and FIG 5. And then, in order to make a shape of honeycomb structure, these two formed metal plates are joined together into a block, like in FIG 6, by facing the protruding sides to each other and inserting one plate's pegs (14) into the spaces among the other plate's pegs (14). In order to have physical properties of honeycomb structure from the block described above, the hexagonal pegs (14) have to be bonded to each other strongly. So, before joining the two formed metal plates together from the previous process, some adhesives or welding materials are inserted or applied on the outer surface of the pegs (14). FIG 7 shows the method of extending the size of the block by joining the honeycomb blocks (20, 22) in a zigzag manner FIG 8 shows the making of a honeycomb sandwich panel Face sheets (26) and adhesive are added to the top and bottom of the block. The face sheets can be made out of many different materials. Non-woven fabric (24) can be used with the adhesive to create a better bond between the sheets (26) and the block. Advantageous Effects In the present invention, a press and a die are used to make the process of producing honeycomb structure simpler. Also, honeycomb structure can be formed using many different types of metal that have high tensile, compression, and bending strength. We Claim: 1. A method of producing honeycomb structure using a press and a die to form two metal plates that have hexagonal pegs protruding out on one side and applying welding material or some adhesive onto the hexagonal pegs and then joining the two formed metal plates by facing the protruding sides to each other. 2. The method of claim 1, wherein the pegs have different polygonal shapes such as triangular, square, and octagonal or even circular. AMENDED CLAIMS [received by the International Bureau on 28 December 2004 (28.12.04); original claims 1 and 2 amended (1 page)] 1 (amended) A method of producing honeycomb structure which comprises shaping hexagonal cells consisting of hexagonal pegs having a predetermined distance from each other by using a mould and a press, applying a welding material or a strong adhesive onto the outer surface of the hexagonal pegs, overlapping two metal plates thus shaped from each other toward the protruded hexagonal peg whereby hexagonal pegs of one metal plate are engaged with the hexagonal pegs of other metal plate and thus hexagonal cells are continuously joined. 2(amended) The method according to claim 1, wherein said pegs are polygonal shape such as triangular, square, octagonal or circular shape. Statement under Article 19(1) Claim 1 of the present application relates to a method of producing honeycomb structure which comprises shaping hexagonal cells consisting of hexagonal pegs having a predetermined distance from each other by using a mould and a press, applying a welding material or a strong adhesive onto the outer surface of the hexagonal pegs, overlapping two metal plates thus shaped from each other toward the protruded hexagonal peg whereby hexagonal pegs of one metal plate are engaged with the hexagonal pegs of other metal plate and thus hexagonal cells are continuously joined. D1(JP 1998-244518 A) is concerned with an extrusion molding die for a honeycomb structure which is built up of at least, a first part and a second part which can be separated from each other. When the first part and the second part are assembled into a single piece, continuous honeycomb cell holes with an identical diameter are formed from the back to the front of the honeycomb structure. According to claim 1 of the present application, it is possible to fabricate a honeycomb structure by applying a strong adhesive onto the outer surface of the hexagonal pegs and then overlapping two metal plates from each other toward the protruded hexagonal peg, in which hexagonal cells are joined strongly from each other. On the contrary, Dl is merely to provide an extrusion molding die which can be easily cleaned without imposing strain thereon at the time of extrusion molding. For the above reasons, the subject matter of claim 1 has an inventive step under PCT Article 33(3). |
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901-CHENP-2006 CORRESPONDENCE OTHERS.pdf
901-CHENP-2006 CORRESPONDENCE PO.pdf
901-CHENP-2006 DESCRIPTION (COMPLETE).pdf
901-chenp-2006-correspondnece-others.pdf
901-chenp-2006-description(complete).pdf
| Patent Number | 232685 | ||||||||
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| Indian Patent Application Number | 901/CHENP/2006 | ||||||||
| PG Journal Number | 13/2009 | ||||||||
| Publication Date | 27-Mar-2009 | ||||||||
| Grant Date | 20-Mar-2009 | ||||||||
| Date of Filing | 15-Mar-2006 | ||||||||
| Name of Patentee | YANG, HOEJUNG | ||||||||
| Applicant Address | 377-24, Gomae-dong, Giheung-gu, Yongin-si, Gyeonggi-do 446-901, | ||||||||
Inventors:
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| PCT International Classification Number | B21D 47/00 | ||||||||
| PCT International Application Number | PCT/KR2004/002325 | ||||||||
| PCT International Filing date | 2004-09-14 | ||||||||
PCT Conventions:
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