CN114103391A - Glue-joint forming process for high-aspect-ratio bidirectional wedge-shaped honeycomb core - Google Patents
Glue-joint forming process for high-aspect-ratio bidirectional wedge-shaped honeycomb core Download PDFInfo
- Publication number
- CN114103391A CN114103391A CN202111407699.XA CN202111407699A CN114103391A CN 114103391 A CN114103391 A CN 114103391A CN 202111407699 A CN202111407699 A CN 202111407699A CN 114103391 A CN114103391 A CN 114103391A
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- CN
- China
- Prior art keywords
- honeycomb core
- honeycomb
- wedge
- vertical plate
- core blank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 17
- 239000003292 glue Substances 0.000 claims abstract description 19
- 238000005187 foaming Methods 0.000 claims abstract description 10
- 239000002313 adhesive film Substances 0.000 claims abstract description 9
- 238000007731 hot pressing Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000004026 adhesive bonding Methods 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000010409 ironing Methods 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000005056 compaction Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/146—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers whereby one or more of the layers is a honeycomb structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/0036—Heat treatment
- B32B38/004—Heat treatment by physically contacting the layers, e.g. by the use of heated platens or rollers
Abstract
The invention discloses a high-length-width ratio bidirectional wedge-shaped honeycomb core glue joint forming process, wherein the glue joint quality is improved by nesting honeycomb cells of adjacent honeycomb blank cores and densifying a foaming adhesive film, and the slippage and collapse caused by resultant force of glue joint surfaces of honeycomb core blanks under the condition of heating pressure in a hot-pressing tank are avoided; the way that the honeycomb core blank is firstly glued and then the heading wedge-shaped outer molded surface is added is adopted, so that course honeycomb cell collapse caused under the bidirectional weak compression resistance condition of the bidirectional wedge-shaped honeycomb is avoided; the sliding self-locking type stop block tool can freely regulate and control the integral side wall compaction force of the honeycomb core blank, avoids the honeycomb side wall from bearing the pressure of a hot pressing tank, promotes the tight fit of each honeycomb core blank, effectively controls the glue joint surface glue joint quality of the honeycomb core blank, has a simple structural form, can be directly matched with a flat plate tool for use, is easy to regulate, has certain rigidity enhancement, is not easy to deform and displace under hot pressing, and plays a role in maintaining the shape of the whole honeycomb core blank.
Description
Technical Field
The invention relates to the technical field of material preparation, in particular to a high-aspect ratio bidirectional wedge-shaped honeycomb core glue joint forming process.
Background
The L-direction and W-direction compressive capacities of the aramid paper honeycomb core are weak, the L-direction and W-direction of the honeycomb core are used as course, the W-direction of the honeycomb core is used as the unfolding direction of the aviation structural member, the course and the unfolding-direction compressive capacity of the honeycomb cells of the aviation structural member are greatly weakened by using the structural configuration of the high-length-width-ratio bidirectional wedge-shaped honeycomb core, the compressive capacity of the honeycomb cells at the gluing surface of the honeycomb core is greatly weakened when the honeycomb cells are glued, the course of the aviation structural member adopts a wedge-shaped outer molded surface, and the unfolding direction adopts a wedge-shaped gluing surface; under the working condition of bonding and molding of the autoclave, when a plurality of blocked bidirectional wedge-shaped honeycomb cores are bonded, because of the pressure difference of wedge-shaped honeycomb cells in a vacuum bag and the pressure difference of the environment of the autoclave and the vacuum bag, the traditional one-step molding bidirectional wedge-shaped honeycomb core is easy to collapse and slide of course wedge-shaped outer molded surfaces and spread wedge-shaped bonding surface honeycomb cells, but the condition is the most serious at the front edge of a bonding surface because the front edge is positioned at a position where the honeycomb course and spread directions are reduced to the thinnest simultaneously, and the specific process of molding the bidirectional wedge-shaped honeycomb core by the one-step method is to bond and mold the whole honeycomb core at one time after the honeycomb core is directly added by a net size machine.
Disclosure of Invention
The invention aims to provide a glue-joint forming process for a bidirectional wedge-shaped honeycomb core with a high length-width ratio aiming at the defects in the prior art.
The technical scheme for solving the problems comprises the following steps: a high-aspect-ratio bidirectional wedge-shaped honeycomb core glue joint forming process specifically comprises the following steps:
firstly, dehumidifying each honeycomb core blank, and then adding a glue joint surface of each honeycomb core blank according to a process digital-analog single machine;
step two: sequentially placing all the preliminarily machined honeycomb core blanks on a sliding self-locking stop block tool to form a whole honeycomb core blank to be glued, and requiring that the honeycomb cells of the glued surfaces of the honeycomb core blanks matched with each other are completely nested;
step three: inserting a foaming adhesive film into the mutually nested honeycomb cell lattices, and heating, compacting and ironing by using an iron after the foaming adhesive film is required to be fully filled in each nested honeycomb cell lattice;
step four: controlling the gap between the sliding self-locking stop block tool and the whole side wall of the honeycomb core blank, and pressing the sliding self-locking stop block tool and the honeycomb core blank appropriately;
step five: carrying out vacuum bag packaging on the whole honeycomb core blank, then sending the honeycomb core blank into an autoclave, and carrying out hot-press gluing after setting hot-press parameters;
step six: and (3) shaping the whole glued joint surface of the foamed honeycomb core blank, adding a sailing direction wedge-shaped outer molded surface by a five-axis machine, and immediately sealing and storing.
Further, slip from locking-type dog frock includes adjustable frame and a plurality of boards that increase the rigidity, adjustable frame includes left riser, right riser, goes up diaphragm, lower diaphragm, it is connected with left riser to go up diaphragm one end to the length direction that left riser can be followed to the diaphragm adjusts, and the other end is connected with right riser, and the length direction that the diaphragm can be followed to right riser adjusts, diaphragm one end is connected with left riser down to the length direction that diaphragm can be followed down to left riser adjusts, and the other end is connected with right riser, and the length direction that right riser can be followed to the diaphragm down adjusts.
Furthermore, a plurality of the stiffening plates are respectively connected to the left vertical plate and the right vertical plate through locking bolts at two ends.
Furthermore, the gluing surface of the honeycomb core blank is a wedge-shaped surface, the wedge-shaped surfaces of two adjacent honeycomb core blanks are attached, and the honeycomb cells of the two honeycomb core blanks correspond to one another one by one to form nested honeycomb cells.
The invention has the following beneficial effects:
the invention provides a high-length-width ratio bidirectional wedge-shaped honeycomb core glue joint forming process, wherein the nesting of honeycomb cells of adjacent honeycomb blank cores and the densification of a foaming adhesive film improve the glue joint quality, and the slippage and collapse caused by the resultant force exerted on the glue joint surface of a honeycomb core blank under the condition of heating and pressing in a hot pressing tank are avoided; the honeycomb core blank is glued and then the aeronautical wedge-shaped outer molded surface is added, so that the collapse of the honeycomb cells of the glued joint surface under the bidirectional weak compression resistance of the bidirectional wedge-shaped honeycomb is avoided; the sliding self-locking type stop block tool can regulate and control the integral side wall compaction force of the honeycomb core blank, prevent the honeycomb from bearing the pressure of a hot pressing tank in the expanding direction and the heading direction, enable the honeycomb core blanks to be tightly matched, effectively control the glue joint surface glue joint quality of the honeycomb core blank, has simple structural form, is matched with an adjustable frame for use by a stiffening plate, and does not need complicated positioning connection among tools; the tool is easy to adjust, has certain rigidity enhancement, is not easy to deform and displace under the hot pressing, and plays a role in maintaining the shape of the whole honeycomb blank core.
Drawings
FIG. 1 is a schematic structural view of the honeycomb core blank as a whole before and after processing in step six of example 1;
FIG. 2 is a schematic structural diagram of a sliding self-locking type stop block tool;
FIG. 3 is an enlarged view of portion A of FIG. 2;
in the figure: 1-honeycomb blank core, 2-adhesive surface, 3-course wedge-shaped outer profile surface, 4-spliced honeycomb cell, 5-left vertical plate, 6-right vertical plate, 7-upper transverse plate, 8-lower transverse plate, 9-chute, 10-bolt and 11-nut.
Detailed Description
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
A high-aspect-ratio bidirectional wedge-shaped honeycomb core glue joint forming process specifically comprises the following steps:
firstly, dehumidifying each honeycomb core blank, and then adding a glue joint surface of each honeycomb core blank according to a process digital-analog single machine;
step two: sequentially placing all the preliminarily machined honeycomb core blanks on a sliding self-locking stop block tool to form a whole honeycomb core blank to be glued, and requiring that the honeycomb cells of the glued surfaces of the honeycomb core blanks matched with each other are completely nested;
step three: inserting a foaming adhesive film into the mutually nested honeycomb cells, filling the foaming adhesive film into each nested honeycomb cell, and then heating, compacting and ironing by using an iron;
step four: controlling the gap between the sliding self-locking stop block tool and the whole side wall of the honeycomb core blank, and pressing the sliding self-locking stop block tool and the honeycomb core blank appropriately;
step five: carrying out vacuum bag packaging on the whole honeycomb core blank, then sending the honeycomb core blank into an autoclave, and carrying out hot-press gluing after setting hot-press parameters;
step six: and (3) shaping the whole glued joint surface of the foamed honeycomb core blank, adding a sailing direction wedge-shaped outer molded surface by a five-axis machine, and immediately sealing and storing.
The sliding self-locking type stop block tool structure is shown in figures 2 and 3 and comprises an adjustable frame and a plurality of stiffening plates, wherein the adjustable frame comprises two transverse plates and two vertical plates, the two vertical plates are respectively a left vertical plate and a right vertical plate, the two transverse plates are respectively an upper transverse plate and a lower transverse plate, one end of the upper transverse plate is connected with the left vertical plate, the upper transverse plate can be adjusted along the length direction of the left vertical plate, the other end of the upper transverse plate is connected with the right vertical plate, the right vertical plate can be adjusted along the length direction of the upper transverse plate, one end of the lower transverse plate is connected with the left vertical plate, the left vertical plate can be adjusted along the length direction of the lower transverse plate, the other end of the lower transverse plate is connected with the right vertical plate, and the lower transverse plate can be adjusted along the length direction of the right vertical plate.
The stiffening plate is connected to the two vertical plates through two ends of the stiffening plate respectively through locking bolts.
Be equipped with the spout that sets up along length direction on the riser of the right side, be equipped with the through-hole that corresponds the setting with the spout on the horizontal board down, the screw passes spout and through-hole and nut threaded connection in proper order, during sliding adjustment, loosens the nut, screws up after the regulation again.
After the adjustable frame is adjusted, the stiffening plate is installed, the locking bolt is screwed down to connect the baffle with the two vertical plates, and the stiffening plate ensures that the honeycomb core blank cannot be deformed when being integrally formed by cementing in the autoclave.
As shown in fig. 1, the glue joint surface of the honeycomb core blank is a wedge-shaped surface, and the included angle of the wedge-shaped surface is 30-60 °.
And in the second step, the wedge surfaces of two adjacent honeycomb core blanks are jointed, the honeycomb cells of the two honeycomb core blanks correspond to one another one by one, and a foaming adhesive film is inserted into each honeycomb cell and is connected after foaming.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art can apply the above modifications or variations to the present invention without departing from the scope of the present invention.
Claims (4)
1. A high-aspect-ratio bidirectional wedge-shaped honeycomb core glue joint forming process is characterized in that: the method specifically comprises the following steps:
firstly, dehumidifying each honeycomb core blank, and then adding the glued surfaces of each honeycomb core blank according to a process digital-analog single machine;
step two: sequentially placing all the preliminarily machined honeycomb core blanks on a sliding self-locking stop block tool to form a honeycomb core blank whole body to be glued, and requiring that the honeycomb cells of the glued surfaces of all the honeycomb core blanks matched with each other are completely nested;
step three: inserting a foaming adhesive film into the mutually nested honeycomb cells, and heating, compacting and ironing by using an iron after the foaming adhesive film is required to be fully filled in each nested honeycomb cell;
step four: controlling the gap between the sliding self-locking stop block tool and the whole side wall of the honeycomb core blank, and pressing the sliding self-locking stop block tool and the honeycomb core blank appropriately;
step five: carrying out vacuum bag packaging on the whole honeycomb core blank, then sending the honeycomb core blank into an autoclave, and carrying out hot-pressing glue joint after setting hot-pressing parameters;
step six: and (3) shaping the whole glued joint surface of the foamed honeycomb core blank, adding a sailing direction wedge-shaped outer molded surface by a five-axis machine, and immediately sealing and storing.
2. The process of claim 1, wherein the high aspect ratio bi-directional wedge honeycomb core is formed by gluing: the self-locking sliding stop block tool comprises an adjustable frame and a plurality of stiffening plates, wherein the adjustable frame comprises a left vertical plate, a right vertical plate, an upper transverse plate and a lower transverse plate, one end of the upper transverse plate is connected with the left vertical plate, the upper transverse plate can be adjusted along the length direction of the left vertical plate, the other end of the upper transverse plate is connected with the right vertical plate, the right vertical plate can be adjusted along the length direction of the upper transverse plate, one end of the lower transverse plate is connected with the left vertical plate, the left vertical plate can be adjusted along the length direction of the lower transverse plate, the other end of the lower transverse plate is connected with the right vertical plate, and the lower transverse plate can be adjusted along the length direction of the right vertical plate.
3. The process of claim 2, wherein the high aspect ratio bi-directional wedge honeycomb core is formed by gluing: and two ends of the stiffening plates are respectively connected to the left vertical plate and the right vertical plate through locking bolts.
4. The process of claim 1, wherein the high aspect ratio bi-directional wedge honeycomb core is formed by gluing: the glue joint surface of the honeycomb core blank is a wedge-shaped surface, the inclination angle of the wedge-shaped surface is 30-60 degrees, the wedge-shaped surfaces of two adjacent honeycomb core blanks are jointed, and the honeycomb cells of the two honeycomb core blanks correspond to one another one by one to form nested honeycomb cells.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111407699.XA CN114103391A (en) | 2021-11-24 | 2021-11-24 | Glue-joint forming process for high-aspect-ratio bidirectional wedge-shaped honeycomb core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111407699.XA CN114103391A (en) | 2021-11-24 | 2021-11-24 | Glue-joint forming process for high-aspect-ratio bidirectional wedge-shaped honeycomb core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114103391A true CN114103391A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111407699.XA Pending CN114103391A (en) | 2021-11-24 | 2021-11-24 | Glue-joint forming process for high-aspect-ratio bidirectional wedge-shaped honeycomb core |
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|---|---|
| CN (1) | CN114103391A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301695A (en) * | 1994-05-09 | 1995-11-14 | Hitachi Cable Ltd | Manufacture of tomographic collimator |
| US20130220731A1 (en) * | 2012-02-29 | 2013-08-29 | Hexcel Corporation | Splicing of curved acoustic honeycomb |
| CN203584218U (en) * | 2013-11-21 | 2014-05-07 | 抚松地王木业有限公司 | Indoor decorative door |
| CN103935050A (en) * | 2014-05-14 | 2014-07-23 | 北京航空航天大学 | Sandwiched structure forming process for preventing slippage and collapse of thick honeycombs |
| CN107379599A (en) * | 2017-09-18 | 2017-11-24 | 沈阳飞机工业（集团）有限公司 | A kind of method that honeycomb splicing is carried out using " comb " type fixture |
| CN109397710A (en) * | 2018-12-19 | 2019-03-01 | 中航复合材料有限责任公司 | A kind of pre-splicing device and method of honeycomb |
| CN208988023U (en) * | 2018-07-27 | 2019-06-18 | 西安医学院 | A kind of adjustable file management cabinet |
| CN210562921U (en) * | 2019-07-05 | 2020-05-19 | 广州市巨盈实业有限公司 | Splicing connection structure and suspended ceiling panel |
| CN112248462A (en) * | 2020-10-30 | 2021-01-22 | 航天海鹰(镇江)特种材料有限公司 | Splicing device and method for large-size paper honeycomb parts |
| CN213837848U (en) * | 2020-11-26 | 2021-07-30 | 李东军 | Be suitable for housing construction structure beam bottom reinforcing apparatus of different cross-sections |
-
2021
- 2021-11-24 CN CN202111407699.XA patent/CN114103391A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07301695A (en) * | 1994-05-09 | 1995-11-14 | Hitachi Cable Ltd | Manufacture of tomographic collimator |
| US20130220731A1 (en) * | 2012-02-29 | 2013-08-29 | Hexcel Corporation | Splicing of curved acoustic honeycomb |
| CN203584218U (en) * | 2013-11-21 | 2014-05-07 | 抚松地王木业有限公司 | Indoor decorative door |
| CN103935050A (en) * | 2014-05-14 | 2014-07-23 | 北京航空航天大学 | Sandwiched structure forming process for preventing slippage and collapse of thick honeycombs |
| CN107379599A (en) * | 2017-09-18 | 2017-11-24 | 沈阳飞机工业（集团）有限公司 | A kind of method that honeycomb splicing is carried out using " comb " type fixture |
| CN208988023U (en) * | 2018-07-27 | 2019-06-18 | 西安医学院 | A kind of adjustable file management cabinet |
| CN109397710A (en) * | 2018-12-19 | 2019-03-01 | 中航复合材料有限责任公司 | A kind of pre-splicing device and method of honeycomb |
| CN210562921U (en) * | 2019-07-05 | 2020-05-19 | 广州市巨盈实业有限公司 | Splicing connection structure and suspended ceiling panel |
| CN112248462A (en) * | 2020-10-30 | 2021-01-22 | 航天海鹰(镇江)特种材料有限公司 | Splicing device and method for large-size paper honeycomb parts |
| CN213837848U (en) * | 2020-11-26 | 2021-07-30 | 李东军 | Be suitable for housing construction structure beam bottom reinforcing apparatus of different cross-sections |
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