JP4751310B2 - Method for producing hollow structure, method for producing structure having gaps between cores, and method for producing structure having cores having gaps fixed - Google Patents

Description

  The present invention relates to a method for manufacturing a hollow structure typified by a sandwich panel or the like, a method for manufacturing a structure having a gap between core materials, and a method for manufacturing a structure having a core material having a gap fixed thereto.

Conventionally, as a method for manufacturing a hollow structure, for example, when a large number of fins (core material) and a flat plate (first member or second member) are alternately stacked, between the fins and the plate, There is a method in which Ni wax or the like in the form of a sheet or paste is inserted and heated in a furnace to melt the wax and join each other (see, for example, Patent Document 1). In such a manufacturing method, since the distance between the fin and the plate changes due to melting of the wax or thermal deformation of the member, it is necessary to press and restrain the fin and the plate so as not to open a gap.
JP 2004-17061 A

However, in order to stand a large number of core materials on the first member at a predetermined interval or between the first member and the second member, a large number of core materials must be handled individually, It took time.
Moreover, when attaching a core material to a 1st member or between a 1st member and a 2nd member one by one, when a core material is easy to deform | transform, sufficient restraint force cannot be applied, but a core material May not be sufficiently fixed to the first member and / or the second member.

  The present invention was devised to solve such problems, and is a hollow structure body that can easily and reliably attach a core material to a first member or between a first member and a second member. It is an object of the present invention to provide a manufacturing method, a manufacturing method of a structure having a gap between core materials, and a manufacturing method of a structure to which a core material having a gap is fixed.

  The present invention provides a hollow structure comprising a first member, a second member, and a plurality of core members erected with a predetermined gap between the first member and the second member. A manufacturing method, wherein a space-holding agent filling step of filling a space-holding agent into the space of the plurality of core members arranged with a space between each other, and a plurality of the space-holding agents held by the space-holding agent Including a core material fixing step of fixing the core material between the first member and the second member, and a spacing agent removing step of dissolving and removing the spacing agent from between the core materials. Features.

According to this method, by filling the gap between the core materials with the spacing agent, the plurality of the core materials and the spacing agent are integrated into one lump. Therefore, a plurality of core materials can be handled integrally. Moreover, the gap | interval between core materials is easily formed by melt | dissolving and removing a space | interval retainer, after fixing the core material made into one lump between a 1st member and a 2nd member with a space retainer. At the same time, a plurality of core members are erected at a time between the first member and the second member. Thereby, the fixing operation of the core material is facilitated, and the productivity of the hollow structure is improved.
Note that “dissolve” includes not only making a solid a liquid (melting) but also dissolving a solid in a solvent such as water (dissolution).

  Moreover, according to this method, since the core material is attached between the first member and the second member while the gap between the core materials is filled with the spacing agent, the core material is not easily damaged. Therefore, even if these are pressurized when fixing the core material between the first member and the second member, the core material will not be deformed or damaged. Moreover, since the core material is pressure-clamped between the first member and the second member, the first member and the core material and the core material and the second member can be firmly fixed.

  Moreover, in the manufacturing method of the hollow structure according to the present invention, in the core material fixing step, a bonding agent having a heat resistant temperature higher than the melting point of the spacing agent is used between the first member and the second member. Preferably, the plurality of core members are fixed, and in the spacing agent removing step, the spacing agent is set to a temperature equal to or higher than the melting point of the spacing agent and lower than the heat resistance temperature of the bonding agent.

According to such a method, by setting the spacing agent to a temperature that is equal to or higher than the melting point of the spacing agent and less than the heat resistance temperature of the bonding agent, the fixed state of the first member and the core material and the second member and the core material The spacing agent can be melted and removed while maintaining the fixed state. Thereby, the clearance gap between adjacent core materials can be easily formed at once.
The heat-resistant temperature of the bonding agent refers to a temperature that maintains the bonding performance.

  Further, in the method for manufacturing a hollow structure according to the present invention, the core material stacking step of alternately stacking the core material and the spacer and the adjacent core materials are temporarily fixed before the spacing agent filling step. A core material temporary fixing step, and a gap forming step of forming a gap between the adjacent core materials by removing the spacer, and after the spacing agent filling step, the core material fixing Before the step, it is preferable to have a temporary fixation releasing step of releasing temporary fixation between the adjacent core members.

According to such a method, it is possible to arrange a plurality of core materials at predetermined intervals without performing complicated operations such as positioning of the core material by a simple method of alternately stacking the core material and the spacer. .
Moreover, a clearance gap can be easily formed between adjacent core materials by removing a spacer in the state to which the said adjacent core materials were temporarily fixed.
Then, if the temporary fixing is released after filling the spacing agent, the plurality of core materials are integrated via the spacing agent, so that the plurality of core materials can be handled integrally in the core material fixing step. it can.
Furthermore, since the core material is fixed between the first member and the second member after the temporary fixing is released, the spacing agent is always exposed to the outside. Since the portion exposed to the outside of the spacing agent becomes an outlet of the spacing agent, the spacing agent can be reliably and easily removed from between the core members.
Thereby, the working time can be shortened, and the productivity of the hollow structure can be improved.

  Moreover, in the manufacturing method of the hollow member which concerns on this invention, it is preferable that the said 1st member and the said 2nd member are flat plate members, and the said hollow structure is a sandwich panel.

  According to this method, it is possible to easily manufacture a sandwich panel in which a plurality of core members are firmly fixed between the first member and the second member.

  The present invention is also a method for manufacturing a structure having a gap between core members, the first member and a plurality of core members standing on the first member with a predetermined gap therebetween. A spacing-holding agent filling step of filling the gaps of the plurality of cores arranged with gaps therebetween with a spacing-holding agent, and the plurality of cores held at intervals by the spacing-holding agent. A core material fixing step of fixing the first member on the first member; and a spacing agent removing step of dissolving and removing the spacing agent from between the core materials.

  According to such a method, since the plurality of core materials are fixed to the first member after filling the gaps of the plurality of core materials arranged with a gap therebetween, the plurality of core materials are fixed during the fixing operation. The core material can be handled collectively. Moreover, after fixing a some core material on the 1st member, a clearance gap can be easily formed between core materials by melt | dissolving and removing from a space | interval between core materials. That is, according to this method, a structure having a gap between the core materials can be easily manufactured.

  Moreover, since the space | interval maintenance agent is filled in the clearance gap between core materials, even if it pressurizes a core material, a core material does not bend | fold or bend. Therefore, it is possible to firmly fix both the first member and the plurality of core members by applying pressure during the fixing operation.

  Further, in the core material fixing step, the present invention fixes the plurality of core materials on the first member by using a bonding agent having a heat resistant temperature higher than the melting point of the spacing agent, and the spacing agent In the removing step, the spacing agent is preferably heated to a temperature equal to or higher than the melting point of the spacing agent and lower than the heat resistance temperature of the bonding agent.

  According to this method, the spacing agent is set to a temperature that is equal to or higher than the melting point of the spacing agent and lower than the heat resistance temperature of the bonding agent, while maintaining the fixed state of the first member and the core material. Can be melted and removed. Thereby, the clearance gap between adjacent core materials can be easily formed at once.

  Moreover, this invention has the core material temporary fixing process of temporarily fixing the said several core material in the state which has the space | gap mutually before the said space | interval maintenance agent filling process, and after the said space | interval maintenance agent filling process In addition, it is preferable that a temporary fixing release step for releasing temporary fixing of the plurality of core members is provided before the core member fixing step.

  According to this method, since there is a core material temporary fixing step of temporarily fixing a plurality of core materials in a state where there is a gap before the interval holding agent filling step, the gap holding agent is easily filled in the gap. be able to. Moreover, if temporary fixing is cancelled | released after filling with a space | interval retention agent, since the several core material is integrated by the space retention agent, a some core material can be handled integrally.

  Moreover, in this invention, it is preferable that the said core material is rod shape or needle shape.

  According to this method, even if the core material is rod-shaped or needle-shaped, it is possible to handle them integrally by filling the gap between the core materials, so that a plurality of rod-shaped or needle-shaped core materials can be handled. Can be easily erected on the first member.

  Moreover, this invention is a manufacturing method of the structure with which the core material which has a clearance gap provided with the 1st member and the core material which has the clearance gap provided in the said 1st member was fixed, Comprising: An interval holding agent filling step of filling the gap of the core material with an interval holding agent, a core material fixing step of fixing the core material held at intervals by the interval holding agent, on the first member; And a gap retention agent removing step of dissolving and removing the gap retention agent from the gap.

  According to such a method, even when the core material is easily deformed because it has a gap, the gap of the core material is filled with the spacing agent, so when fixing the core material to the first member, The core material is not easily deformed or damaged. In addition, since the spacing agent is melted and removed after the core member is fixed to the first member, the gap can be easily restored. Therefore, it is possible to easily and reliably manufacture a structure in which a core material having a gap is fixed.

  Further, in the core material fixing step, the core material is fixed on the first member using a bonding agent having a heat resistant temperature higher than the melting point of the space retention agent, and in the space retention agent removal step, the space is removed. It is preferable to heat the holding agent to a temperature not lower than the melting point of the spacing agent and lower than the heat resistance temperature of the bonding agent.

  According to this method, the spacing agent is set to a temperature that is equal to or higher than the melting point of the spacing agent and lower than the heat resistance temperature of the bonding agent, while maintaining the fixed state of the first member and the core material. Can be melted and removed. Thereby, the clearance gap between core materials can be formed easily.

  Moreover, it is preferable to provide the process of fixing a 2nd member on the opposite side to the said 1st member of the said core material after the said core material fixing process and before the said space | interval maintenance agent removal process.

  According to such a method, since the second member is fixed to the opposite side of the first member of the core material filled with the gap with the spacing agent, the core material is not easily deformed or damaged even when a pressing force is applied. Moreover, a clearance gap can be easily formed by melt | dissolving and removing a space | interval holding agent. Thereby, a hollow structure can be manufactured easily.

  ADVANTAGE OF THE INVENTION According to this invention, the manufacturing method of the hollow structure which can attach a core material to a 1st member or between a 1st member and a 2nd member easily and reliably, and a structure which has a clearance gap between core materials And a method for producing a structure in which a core material having a gap is fixed.

  A first embodiment of the present invention will be described in detail with reference to the drawings. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted. In the first embodiment, a sandwich panel will be described as an example of the hollow structure.

First, the structure of the sandwich panel 1 manufactured by the method for manufacturing a hollow structure according to the first embodiment will be described.
FIG. 1 is a perspective view showing a sandwich panel according to the first embodiment.
As shown in FIG. 1, the sandwich panel 1 is a hollow lightweight member excellent in specific strength and specific rigidity, and is used for, for example, a wall of a building, a vehicle, an aircraft, or the like. The sandwich panel 1 has a rectangular shape in plan view, and a first panel 21 that is a first member, a second panel 22 that is a second member, and a predetermined panel between the first panel 21 and the second panel 22. It is comprised from the plate-shaped member 31,31 ... which is the some core material fixed with the clearance gap 34. As shown in FIG.

  The first panel 21 and the second panel 22 are flat plate members constituting so-called surface materials of the sandwich panel 1 and have a rectangular shape (length L × width B) in plan view. The first panel 21 and the second panel 22 are made of, for example, a metal material such as an aluminum alloy or a plastic material such as fiber reinforced plastic. In the present embodiment, the first panel 21 and the second panel 22 are formed using a carbon fiber reinforced resin material (hereinafter sometimes referred to as “CFRP (Carbon Fiber Reinforced Plastics)”).

  The plate-like member 31 is a member constituting a so-called core material (strength member) of the sandwich panel 1 and has a rectangular shape (length L × width (height) H) in side view. A plurality of plate-like members 31 are erected with a predetermined gap 34 (interval d) between the first panel 21 and the second panel 22. That is, the first panel 21 is fixed across the upper end portions 31c of the plurality of plate-like members 31, 31..., And the second panel 22 extends over the lower end portions 31d of the plurality of plate-like members 31, 31. It is fixed. In addition, nothing is attached to the right end portion 31b and the left end portion 31a of the plurality of plate-like members 31, 31... And a gap 34 is opened in the side portion of the sandwich panel 1. The plate-like member 31 is made of, for example, a metal material such as an aluminum alloy or a plastic material such as fiber reinforced plastic. In the present embodiment, the plate-like member 31 is made of CFRP, and is fixed to the first panel 21 and the second panel 22 with a bonding agent. Moreover, the thickness dimension of the plate-shaped member 31 is about 0.4 mm, for example, and the space | interval d of the clearance gap 34 is about 1 mm, for example.

Next, a method for manufacturing the hollow structure according to the first embodiment will be described with reference to FIGS.
FIG. 2 is a flowchart showing the procedure of the method for manufacturing the hollow structure according to the first embodiment. FIG. 3 is a schematic diagram for explaining a core material lamination step. FIG. 4 is a schematic diagram for explaining the core temporary fixing step. FIG. 5 is a schematic diagram for explaining the gap forming step. FIG. 6 is a schematic diagram for explaining the spacing agent filling step. FIG. 7 is a schematic diagram for explaining the temporary fixing release step. FIG. 8 is a schematic diagram for explaining the core material fixing step. FIG. 9 is a schematic diagram for explaining the spacing agent removing step.

  As shown in FIG. 2, the manufacturing method of the hollow structure according to the first embodiment includes a core material stacking step S1, a core material temporary fixing step S2, a gap forming step S3, and a spacing agent filling step S4. It includes a temporary fixing release step S5, a core material fixing step S6, and an interval retention agent removing step S7. Hereinafter, each step will be described in detail.

[Core material stacking step S1]
First, as shown in FIG. 3A, a plurality of CFRP long plate-like members 31 and spacers 32 are prepared. At this time, the plate-like member 31 having a length dimension W1 larger than the length dimension W2 of the spacer 32 is prepared. The spacer 32 is prepared such that the thickness dimension t is equal to the interval d (see FIG. 1) of the gap 34 between the adjacent plate-like members 31 and 31 of the sandwich panel 1 to be manufactured. Then, the plate-like members 31 and the spacers 32 are alternately stacked while the left end portion 31a and the right end portion 31b of the plate-like member 31 are protruded from the left end portion 32a and the right end portion 32b of the spacer 32.
Thereby, as shown in FIG.3 (b), 30 A of laminated bodies of the plate-shaped member 31 and the spacer 32 are formed. At this time, the plate-like member 31 and the spacer 32 are merely laminated and are not bonded. It is preferable that the plate-like members 31 and the spacers 32 are alternately laminated in the number of sheets in which the combined dimension B of the plate members 31 and the spacers 32 is substantially equal to the width dimension B of the first panel 21 and the second panel 22 shown in FIG.

[Core material temporary fixing step S2]
Next, as shown in FIG. 4, the adjacent left end portions 31 a, 31 a of the plate-like members 31, 31... Of the laminated body 30 </ b> A are temporarily fixed with the temporary fixing adhesive 33 and the adjacent right end portions 31 b, 31 b are adjacent to each other. They are temporarily fixed with an adhesive 33 for temporary fixing. The temporarily fixing adhesive 33 can be appropriately selected from known adhesives. In this embodiment, an epoxy adhesive (EA9394 / C-2) manufactured by Henkel is used as the temporary fixing adhesive 33.

[Gap Formation Step S3]
Next, as shown in FIG. 5, by removing the spacers 32, 32... From the laminate 30A in which the left end portions 31a, 31a... And the right end portions 31b, 31b. ..., gaps 34, 34...

  That is, according to such a method, it is possible to arrange the plate-like members 31, 31... At a predetermined interval by a simple method of alternately stacking the plate-like members 31, 31. Further, since the plate-like members 31, 31 are temporarily fixed, the gaps 34, 34 ... can be maintained even if the spacers 32, 32 ... are removed.

[Interval retainer filling step S4]
Next, as shown to Fig.6 (a), the storage tank 41 which stored the melt | dissolved space | interval holding agent 42 is prepared. As the spacing agent 42, for example, a thermoplastic adhesive, a hot melt adhesive, or the like can be used. In this embodiment, Crystalbond 590 manufactured by Electron Microscience Sciences is used as the spacing agent 42. The melting point of Crystalbond 590 is about 150 ° C.
When the plate-like members 31, 31... Arranged with gaps 34, 34... Are submerged in the storage tank 41, the spacing agent 42 flows into the gaps 34, 34.
After the storage tank 41 is cooled in this state and the spacing agent 42 is cured, the plate-like members 31, 31,... Are taken out from the storage tank 41 and the excess spacing agent 42 is removed. As shown, plate-like members 31, 31... In which gaps 34, 34. The method for filling the gap retaining agent 42 in the gap 34 is not limited to this.

[Temporary fixing release step S5]
Next, as shown in FIG. 7, the temporary fixing is released by cutting off and removing the temporary fixing adhesives 33, 33 from the respective plate-like members 31, 31. The cut plate-like members 31, 31... Are integrated with the interval holding agent 42 and are held at a predetermined interval, so that the plate-like members 31, 31 and the interval holding agents 42, 42. The body 30B can be handled integrally. At this time, it is preferable to cut the laminated body 30B so that the length dimension L of the laminated body 30B is substantially equal to the length dimension L of the first panel 21 and the second panel 22 shown in FIG.

[Core material fixing step S6]
Next, as shown in FIG. 8A, the bonding agent 50 is applied to the lower surface 30Ba of the stacked body 30B. The bonding agent 50 is preferably applied by, for example, screen printing or roll coating. The bonding agent 50 may be any material that has a bonding force even at a temperature equal to or higher than the melting point of the spacing agent 42. For example, a thermosetting adhesive or a thermoplastic adhesive can be used. . Moreover, when each member is metal, you may braze using a brazing. In the present embodiment, as the bonding agent 50, the same epoxy adhesive (EA9394 / C-2) manufactured by Henkel as the temporary fixing adhesive 33 is used. The epoxy adhesive (EA9394 / C-2) has a heat resistance temperature of about 260 ° C., which is higher than the melting point of the spacing agent 42.

  Then, the lower surface 30Ba of the laminated body 30B to which the bonding agent 50 is applied is brought into contact with the second panel 22 and pressed, thereby firmly bonding the two. At this time, since the plate-like members 31, 31... Are integrated by the spacing agents 42, 42..., The plate-like members 31, 31. Therefore, the plate-like members 31, 31... And the second panel 22 can be reliably and easily bonded. The applied pressure is preferably about 0.5 MPa, for example.

Next, as shown in FIG. 8B, the bonding agent 50 is applied to the upper surface 30Bb of the laminated body 30B, and the first panel 21 is brought into contact with the upper surface 30Bb to pressurize both so Glue.
Thereby, as shown in FIG.8 (c), the laminated body 10A of the 1st panel 21, the laminated body 30B, and the 2nd panel 22 is formed.
The pressing force may be applied after the first panel 21 and the second panel 22 are brought into contact with the upper surface 30Bb and the lower surface 30Ba of the stacked body 30B, respectively. Further, when a thermosetting adhesive is used as the bonding material 50, it may be further heated in a pressurized state.

[Spacing Retention Agent Removal Step S7]
Next, as shown to Fig.9 (a), 10 A of laminated bodies are arrange | positioned in the box-type temperature rising furnace 60. FIG. At this time, since the temporary fixing adhesive 33 is removed from the left end portions 31a, 31a ... and the right end portions 31b, 31b ... of the plate-like members 31, 31 in the temporary fixing release step S5, the left and right ends of the laminated body 10A The spacing agent 42 is exposed in the part.
When the temperature raising furnace 60 is heated to a temperature equal to or higher than the melting point of the spacing agent 42 and lower than the melting point of the bonding agent 50, the spacing agents 42, 42. The melted spacing agent 42 flows out from between the plate-like members 31, 31... Exposed at the left and right ends of the laminated body 10A.
In FIG. 9A, for convenience of explanation, the upper wall of the heating furnace 60 is drawn with a virtual line.

As shown in FIG. 9 (b), when the spacing agents 42, 42... Flow out from between the plate-like members 31, 31..., The plate-like member 31, between the first panel 21 and the second panel 22. Only 31 ... remains in a standing state. A gap 34 equal to the thickness dimension t of the spacing agent 42 (and thus the spacer 32) is formed between the adjacent plate-like members 31, 31. As a result, the sandwich panel 1 is formed.
The spacing agent 42 that could not be removed by melting is dissolved and removed using a solvent such as methanol.

According to the manufacturing method of the sandwich panel 1 as described above, the following operational effects can be obtained.
That is, according to such a method, by filling the gap 34 between the plate-like members 31 and 31 with the interval retaining agent 42, the plurality of plate-shaped members 31, 31... And the interval retaining agents 42, 42. It becomes a lump. Therefore, the plurality of plate-like members 31, 31... Can be handled integrally.

  Further, the plurality of plate-like members 31, 31... In a lump are fixed between the first panel 21 and the second panel 22 together with the spacing retainers 42, 42. Are easily formed between the plate-like members 31, 31..., And at the same time, the plurality of plate-like members 31, 31. Will be established. This facilitates the fixing operation of the plate-shaped members 31, 31... And improves the productivity of the sandwich panel 1.

  Further, according to such a method, the plate-like member 31 is attached between the first panel 21 and the second panel 22 in a state where the gap 34 between the plate-like members 31 and 31 is filled with the gap retaining agent 42. , 31 ... are not easily damaged. Therefore, even when the plate-like member 31 is easily deformable, the plate-like member 31 can be pressed between the first panel 21 and the second panel 22 with appropriate pressure.

  Further, since the bonding agent 50 for bonding the plate-like member 31 and the first panel 21 and the plate-like member 31 and the second panel 22 uses a material having a melting point higher than that of the interval holding agent 42, the interval holding is performed. By setting the temperature of the agent 42 to a temperature that is equal to or higher than the melting point of the spacing agent 42 and lower than the melting point of the bonding agent 50, the plate-like member 31 and the first panel 21, and the plate-like member 31 and the second panel 22. The spacing agent 42 can be melted and removed while maintaining the fixed state. Thereby, the clearance gap 34 between the adjacent plate-shaped members 31 and 31 can be easily formed at once.

Further, the plate-like members 31 and the spacers 32, which are the raw materials of the plate-like member 31, are simply stacked, and a plurality of plate-like members can be obtained without performing complicated operations such as positioning of the plate-like members 31. 31 can be arranged at predetermined intervals.
Moreover, the clearance gap 34 can be easily formed between the adjacent plate-shaped members 31 and 31 by removing the spacer 32 in the state in which the adjacent plate-shaped members 31 and 31 are temporarily fixed.
Then, if the temporary fixing adhesive 33 is removed after filling the gap retainer 42, the plurality of plate-like members 31, 31... Are integrated via the gap retainer 42. Therefore, the core material fixing step S6. Can handle a plurality of plate-like members 31, 31.
Further, since the plurality of plate-like members 31, 31... Integrated after the temporary fixing adhesive 33 is removed are fixed between the first panel 21 and the second panel 22, the spacing agent 42 must be provided outside. Exposed. Since the portion exposed to the outside of the spacing agent 42 becomes the outlet of the melted spacing agent 42, the spacing agent 42 can be reliably and easily removed from between the plate-like members 31 and 31.
Thereby, the working time can be shortened, and the productivity of the hollow structure can be improved.

It continues and demonstrates the manufacturing method of the hollow structure which concerns on 2nd Embodiment mainly with reference to FIG.
FIG. 10 is a schematic diagram for explaining a method for manufacturing a hollow structure according to the second embodiment. (A) is a core material temporary fixing step, (b) is a gap forming step, and (c) is a step. The temporary fixing release process is shown respectively.

  The manufacturing method of the hollow structure according to the second embodiment is different from the first embodiment in that the plate-like member 31 is temporarily fixed using a temporary fixing jig (temporary fixing jig 70). .

  As shown in FIG. 10 (a), the temporary fixing jig 70 includes gripping portions 71, 71... For gripping the left and right end portions 31a, 31b of the plate members 31, 31. The gripping portions 71, 71... Are concave grooves having a width dimension substantially equal to the thickness dimension v of the plate-like member 31. The grips 71, 71... Are provided at an interval substantially equal to the thickness dimension t of the spacer 32. The material of the temporary fixing jig 70 is not particularly limited, and is formed using an appropriate material such as metal or plastic.

In the core material stacking step S1, a plurality of plate-like members 31, 31... Are arranged at a predetermined interval, that is, with a thickness dimension t of the spacers 32, 32. .. Are formed in the temporary fixing jig 70 at intervals corresponding to the thickness dimension t of the spacer.
Therefore, in the core material temporary fixing step S2, the left and right end portions 31a, 31b of the laminated plate-like members 31, 31... Are inserted into the holding portions 71, 71. can do.
That is, if the spacer 32 and the temporary fixing jig 70 corresponding to the spacer 32 are used, the plate-like members 31, 31,... Can be easily aligned with the temporary fixing jig 70 one by one. Can be temporarily fixed. Therefore, the working time can be shortened.

  Then, as shown in FIG. 10B, if the spacers 32 are extracted while the left and right end portions 31a and 31b are gripped by the temporary fixing jig 70, a gap is formed between the adjacent plate-like members 31 and 31. 34 will be formed. In FIG. 10B, the extracted spacer 32 is indicated by a broken line.

  Then, as shown in FIG. 10 (c), the gap members 34, 34... Are filled with the gap retaining agent 42 to integrate the plate-like members 31, 31,. Is released (temporary fixing releasing step S5). As a result, a laminate 30B 'of the plate-like members 31, 31 ... and the spacing agents 42, 42 ... is manufactured. In this way, it is not necessary to cut the plate-like member 31, and the temporary fixing can be easily released. The plate member 31 preferably has a length dimension substantially equal to the length dimension L of the first panel 21.

Next, a third embodiment of the present invention will be described with reference to FIGS. In the description, the same elements as those in the above-described embodiment are denoted by the same reference numerals, and redundant description is omitted.
FIG. 11 is a perspective view of a structure having a gap between core members according to the third embodiment. FIG. 12 is a flowchart for explaining a method of manufacturing a structure having a gap between core members according to the third embodiment. FIG. 13 is a schematic diagram for explaining a core material temporary fixing step and a spacing agent filling step according to the third embodiment. FIG. 14 is a schematic diagram for explaining the temporary fixing release process of the third embodiment. FIG. 15 is a schematic diagram for explaining the core material fixing step of the third embodiment. FIG. 16 is a schematic diagram for explaining the spacing agent removal process of the third embodiment.

  The structure 1A having a gap between the cores according to the third embodiment (hereinafter sometimes referred to as “gap structure 1A”) has a point that the core is formed in a rod shape, and the first member The main difference from the hollow structure 1 according to the first embodiment is that the core material is erected on the first member, not between the first member and the second member.

  The interstitial structure 1 </ b> A includes a disk-shaped member 121 that is a first member, and a plurality of rod-shaped members 131, 131... That are core members standing on the surface of the disk-shaped member 121. And 1 A of clearance structures have the clearance gap 134 between the rod-shaped members 131 adjacent. The use of the gap structure 1A is not particularly limited, but can be used as a heat sink that is attached to a machine part that generates heat and dissipates heat, for example.

The disk-shaped member 121 is a member serving as a base for standing the core material, and is configured by a plate-shaped member having a circular shape in plan view. The disk-shaped member 121 is made of, for example, a metal material such as an aluminum alloy or a plastic material such as fiber reinforced plastic.
In the third embodiment, the first member has been described by taking a plate member having a circular shape in plan view as an example. However, the first member is not particularly limited, and for example, a machine having a three-dimensional solid shape. It may be a component. Examples of the three-dimensional solid shape include a spherical shape, a staircase shape, a wave shape, and a complicated shape combining these.

The bar-shaped member 131 is a columnar member, and a plurality of the bar-shaped members 131 are provided on the upper surface of the disk-shaped member 121 with gaps 134 therebetween. In the third embodiment, the disk-shaped members 121 are arranged at regular intervals in the approximate center of 5 × 5 in width. The rod-shaped member 131 is made of, for example, a metal material such as an aluminum alloy or a plastic material such as fiber reinforced plastic.
In the third embodiment, the core member has been described by taking a cylindrical member as an example. However, the shape of the core member is not particularly limited, and for example, the cross-sectional shape may be a columnar shape exhibiting a polygon. Instead of a columnar shape, a conical shape (for example, a conical shape) may be used, or a columnar shape (pointed shape) in which only the head is pointed may be used. Needless to say, the core material may be plate-shaped as described in the first and second embodiments.

It continues and demonstrates the manufacturing method of the clearance structure 1A which concerns on 3rd Embodiment.
As shown in FIG. 12, the manufacturing method of the gap structure 1A according to the third embodiment includes a core material temporary fixing step S101, a spacing agent filling step S102, a temporary fixing release step S103, and a core material fixing step. S104 and the spacing agent removal step S105 are included. Hereinafter, each step will be described in detail.

[Core material temporary fixing step S101]
As shown in FIG. 13A, first, temporary fixing members 133A, 133B for temporarily fixing the long bar-shaped members 132, 132... That are the raw materials of the bar-shaped member 131 are prepared.
The temporarily fixing member 133A is a plate-like member having a square shape when viewed from the side, and a plurality of insertion holes 133Aa, 133Aa,... For inserting the long rod-shaped members 132, 132,. The plurality of insertion holes 133Aa, 133Aa,... Are formed at a distance t from each other. The arrangement and interval t of the plurality of insertion holes 133Aa, 133Aa,... Correspond to the arrangement and interval d (see FIG. 11) of the rod-like members 131, 131 of the gap structure 1A to be manufactured. The temporary fixing member 133B has the same structure as that of the temporary fixing member 133A, and thus description thereof is omitted.

Then, one end 132a of the long rod-shaped member 132 is fitted into the fitting hole 133Aa of the temporary fixing member 133A, and the other end 132b of the long rod-shaped member 132 is fitted into the fitting hole 133Ba of the temporary fixing member 133B. .
As a result, as shown in FIG. 13B, adjacent end portions 132 a of the long rod-shaped member 132 are temporarily fixed with a temporary fixing member 133 </ b> A at an interval t, and the long rod-shaped member 132 is not fixed. The adjacent other end portions 132b are temporarily fixed at a distance t by the temporary fixing member 133B. That is, the temporary fixing members 133A, 133B are in a state where a plurality of long rod-shaped members 132, 132... Are arranged with gaps 134, 134.

[Spacing Retention Agent Filling Step S102]
Next, as shown in FIG.13 (c), the said clearance gaps 134,134 of the some elongate rod-shaped members 132,132 ... arrange | positioned by temporary fixing members 133A, 133B with the gaps 134,134 ... mutually. ... are filled with a spacing agent 42. As the spacing agent 42, for example, a thermoplastic adhesive, a hot melt adhesive, or the like can be used. In this embodiment, Crystalbond 590 manufactured by Electron Microscience Sciences is used as the spacing agent 42. The melting point of Crystalbond 590 is about 150 ° C.
Since the filling method of the spacing agent 42 is the same as that of the first embodiment, detailed description thereof is omitted (see FIGS. 6A and 6B).

[Temporary fixing release step S103]
Next, as shown in FIG. 14, the long rod-shaped members 132, 132... Held at a predetermined interval by the interval holding agent 42 are cut together with the interval holding agent 42 into a predetermined length. As a result, the temporary fixing members 133A, 133B are separated from the long bar-shaped members 132, 132... (Temporary fixing is released), and a plurality of bar-shaped members 131, 131 held by the interval holding agent 42 at a predetermined interval. ... blocks 135, 135 ... are formed.
In the third embodiment, the block 135 has a hexahedral shape that is square when viewed from the side. On the cut surface 135a of the block 135, the end surfaces of the bar-shaped members 131, 131...
In the third embodiment, the temporary fixation is released by cutting. However, the temporary fixation release method is not limited to this, and the temporary fixation members 133A and 133B and the rod-like member 131 may be separated. Good. In the third embodiment, the cut surface is a flat surface, but may be cut or cut into a three-dimensional shape in accordance with the shape of the first member.

[Core material fixing step A104]
Next, as shown in FIG. 15A, the bonding agent 50 is applied to one cut surface 135 a of the block 135. The bonding agent 50 is preferably applied by, for example, screen printing or roll coating. The bonding agent 50 may be any material that has a bonding force even at a temperature equal to or higher than the melting point of the spacing agent 42. For example, a thermosetting adhesive or a thermoplastic adhesive can be used. . Moreover, when each member is metal, you may braze using a brazing. In the present embodiment, as the bonding agent 50, the same epoxy adhesive (EA9394 / C-2) manufactured by Henkel as the temporary fixing adhesive 33 is used. The epoxy adhesive (EA9394 / C-2) has a heat resistance temperature of about 260 ° C., which is higher than the melting point of the spacing agent 42.

Next, as shown in FIG. 15 (b), the one cut surface 135 a of the block 135 to which the bonding agent 50 is applied is brought into contact with the disk-shaped member 121 and pressed to firmly bond the two. At this time, since each rod-shaped member 131, 131... Is buried in the spacing agent 42, 42..., The rod-shaped members 131, 131. Therefore, the rod-shaped members 131, 131... And the disk-shaped member 121 can be reliably and easily bonded. The applied pressure is preferably about 0.5 MPa, for example.
Further, since the rod-shaped members 131, 131... Are integrated by the spacing agents 42, 42..., The plurality of rod-shaped members 131, 131. Therefore, the operation | work which fixes a core material to the 1st member becomes easy.

[Spacing Retention Agent Removal Step S105]
Next, as shown in FIG. 16, a disk-shaped member 121 to which a block 135 is fixed is disposed in a box-shaped heating furnace 60.
When the temperature raising furnace 60 is heated to a temperature equal to or higher than the melting point of the spacing agent 42 and lower than the melting point of the bonding agent 50, the spacing agents 42, 42. , 131... Flows out of the melted spacing agent 42. As a result, gaps 134, 134... Are formed between the adjacent rod-shaped members 131, 131. In addition, the space | interval d (refer FIG. 11) of the clearance gap 134 becomes equal to the space | interval t (refer FIG. 13A) of insertion hole 133Aa, 133Ba of temporary fixing member 133A, 133B. Thereby, the gap structure 1A as shown in FIG. 11 is formed.

  Thus, according to the manufacturing method of the structure 1A having a gap between the core members according to the third embodiment, the plurality of rod-shaped members 131, 131... Can be easily manufactured. Moreover, since each rod-shaped member 131,131 ... is in the state embedded in the space | interval holding agent 42,42 ..., it does not bend | fold or fall down with applied pressure. Therefore, the rod-shaped members 131, 131... And the disk-shaped member 121 can be reliably and easily bonded.

It continues and demonstrates the manufacturing method of the structure to which the core material which has a clearance gap concerning 4th Embodiment was fixed with reference to FIG.17 and FIG.18. In the description, elements common to the above-described embodiment are denoted by the same reference numerals, and redundant description is omitted.
FIG. 17 is a perspective view of a structure to which a core material having a gap is fixed. FIG. 18 is a schematic diagram for explaining a core material fixing step.

  The manufacturing method of the structure 1B in which the core material having the gap according to the fourth embodiment is fixed is that the gap retaining agent is filled in the gap of one core material, not between the plurality of gaps. This is mainly different from the third embodiment described above.

First, the structure of the structure 1B to which the core material having a gap is fixed will be described.
As shown in FIG. 17, the structure 1 </ b> B to which a core material having a gap is fixed includes a base member 221 that is a first member and a spiral member 231 that is a core material having a gap fixed to the base member 221. And is composed of.

The base member 221 is a member serving as a base for erecting the core material, and is configured by a plate-like member having a quadrangular shape in plan view. The base member 221 is made of, for example, a metal material such as an aluminum alloy or a plastic material such as fiber reinforced plastic.
The shape of the base member 221 is not particularly limited.

The spiral member 231 is a member in which an elongated plate material is formed in a spiral shape, and has a spiral gap 234. The spiral member 231 is made of, for example, a metal material such as an aluminum alloy or a plastic material such as fiber reinforced plastic. The spiral member 231 is fixed to the base member 221 with a bonding agent 50 (see FIG. 18).
A part of the spiral gap 234 is exposed (opened) to the outside in a state where the spiral member 231 is fixed to the base member 221.
In the fourth embodiment, the spiral member 231 has been described as an example of the core material having a gap. However, the shape of the core material is not limited to the spiral shape. Is not particularly limited.

  Since the spacing agent 42 and the bonding agent 50 have the same configuration as that of the first embodiment, detailed description thereof will be omitted.

Next, a method for manufacturing the structure 1B to which the core material having a gap is fixed will be described.
The manufacturing method of the structure 1B to which the core material having a gap is fixed includes an interval holding agent filling step, a core material fixing step, and an interval holding agent removing step.

[Interval retainer filling step]
As shown in FIG. 18, the spacing agent 42 is filled into the spiral gap 234 of the spiral member 231. For example, as described in the first embodiment, as a method of filling the gap retention agent, a method of setting the spiral member 231 in the storage tank 41 in which the melted gap retention agent 42 is stored may be employed. (See FIGS. 6A and 6B). According to such a method, the melted spacing agent 42 flows into the gap 234. Then, when the spiral member 231 is taken out after the spacing agent 42 has hardened, the spiral member 231 in which the gap 234 is filled with the spacing agent 42 is obtained.

[Core fixing process]
Next, the bonding agent 50 is applied to one end surface 231 a of the spiral member 231 in which the gap 234 is filled with the spacing agent 42. Then, the end surface 231 a to which the bonding agent 50 is applied is brought into contact with the base member 221 to fix the spiral member 231 and the base member 221. At this time, since the gap retainer 234 is filled in the gap 234 of the spiral member 231, the spiral member 231 may be deformed or damaged even if both are pressed with an appropriate force in order to fix firmly and firmly. There is nothing to do. Therefore, the spiral member 231 can be easily fixed, and the spiral member 231 can be firmly and securely fixed to the base member 221.

[Interval retainer removal step]
Next, although not shown, the base member 221 to which the spiral member 231 is fixed is placed in a temperature raising furnace (see FIG. 9A) and heated to a temperature equal to or higher than the melting point of the spacing agent 42. As a result, the spacing agent 42 melts and flows out of the gap 234. As a result, the spacing agent 42 is removed from the gap 234 and the gap 234 is restored.
Through the steps as described above, the structure 1B to which the core material having the gap is fixed is manufactured.

  A second member (not shown) may be fixed to the other end 231b of the spiral member 231. If it does in this way, the hollow structure which uses the spiral member 231 as a core material can be manufactured easily.

  The best mode for carrying out the present invention has been described in detail with reference to the drawings. However, the present invention is not limited to these, and can be appropriately changed without departing from the gist of the present invention. is there.

  For example, in the first embodiment, the plate-like members 31, 31... Arranged at a predetermined interval are submerged in the melted interval holding agent 42, thereby holding the gap in the gap 34 between the plate-like members 31, 31. Although the agent 42 is filled, the method of filling the spacing agent 42 is not limited to this. For example, one opening of the gaps 34, 34 may be closed using a mold, and the melted spacing agent 42 may be injected from the other opening.

  In the first embodiment, each member is made of CFRP, but may be made of other materials. For example, when each member is made of a metallic material, a brazing material having a melting point higher than that of the spacing agent 42 may be used as the bonding agent 50 (brazing).

  In the first to fourth embodiments, the spacing agent is melted and removed using the temperature raising furnace 60. However, it goes without saying that the spacing agent may be dissolved and removed using a chemical or the like. Nor.

It is a perspective view which shows the sandwich panel of 1st Embodiment. It is a flowchart which shows the procedure of the manufacturing method of a hollow structure. It is a schematic diagram for demonstrating a core material lamination process. It is a schematic diagram for demonstrating a core material temporary fixing process. It is a schematic diagram for demonstrating a clearance gap formation process. It is a schematic diagram for demonstrating a space | interval holding agent filling process. It is a schematic diagram for demonstrating a temporary fixing cancellation | release process. It is a schematic diagram for demonstrating a core material fixing process. It is a schematic diagram for demonstrating a space | interval holding agent removal process. It is a schematic diagram for demonstrating the manufacturing method of the hollow structure which concerns on 2nd Embodiment, (a) is a core material temporary fixing process, (b) is a clearance gap formation process, (c) is a temporary fixing cancellation | release process. Respectively. It is a perspective view of a structure which has a crevice between core materials concerning a 3rd embodiment. It is a flowchart for demonstrating the manufacturing method of the structure which has a clearance gap between the core materials which concern on 3rd Embodiment. It is a schematic diagram for demonstrating the core material temporary fixing process and space | interval maintenance agent filling process of 3rd Embodiment. It is a schematic diagram for demonstrating the temporary fixation cancellation | release process of 3rd Embodiment. It is a schematic diagram for demonstrating the core material fixing process of 3rd Embodiment. It is a schematic diagram for demonstrating the space | interval holding agent removal process of 3rd Embodiment. It is a perspective view of the structure to which the core material which has a clearance gap concerning 4th Embodiment was fixed. It is a schematic diagram for demonstrating the core material fixing process of 4th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sandwich panel 21 1st panel 22 2nd panel 31 Plate-shaped member (core material)
32 Spacer 34 Gap 42 Space retention agent S1 Core material stacking step S2 Core material temporary fixing step S3 Gap formation step S4 Space retention agent filling step S5 Temporary fixation release step S6 Core material fixing step S7 Space retention agent removal step

Claims (11)

A method for manufacturing a hollow structure comprising: a first member; a second member; and a plurality of core members erected with a predetermined gap between the first member and the second member. And
A spacing agent filling step of filling a spacing agent in the gaps of the plurality of core members arranged with a gap between each other;
A core material fixing step of fixing the plurality of core materials, the intervals of which are maintained by the interval maintaining agent, between the first member and the second member;
An interval maintaining agent removing step of dissolving and removing the interval maintaining agent from between the cores;
The manufacturing method of the hollow structure characterized by including. In the core material fixing step, the plurality of core materials are fixed between the first member and the second member using a bonding agent having a heat resistance higher than the melting point of the spacing agent,
2. The hollow structure according to claim 1, wherein in the spacing agent removing step, the spacing agent is heated to a temperature equal to or higher than a melting point of the spacing agent and lower than a heat resistant temperature of the bonding agent. Manufacturing method. Before the spacing agent filling step,
A core material lamination step of alternately laminating the core material and the spacer;
A core temporary fixing step of temporarily fixing the adjacent cores together;
A gap forming step of removing the spacer and forming a gap between the adjacent core members,
2. The method according to claim 1, further comprising a temporary fixing releasing step of releasing temporary fixing between the adjacent core materials after the spacing agent filling step and before the core material fixing step. 2. A method for producing a hollow structure according to 2.   The method for manufacturing a hollow structure according to any one of claims 1 to 3, wherein the first member and the second member are flat plate members, and the hollow structure is a sandwich panel. . A manufacturing method of a structure having a gap between core members, the first member and a plurality of core members standing on the first member with a predetermined gap therebetween,
A spacing agent filling step of filling a spacing agent in the gaps of the plurality of cores arranged with a gap between each other;
A core material fixing step of fixing the plurality of core materials, the intervals of which are maintained by the interval maintaining agent, on the first member;
An interval maintaining agent removing step of dissolving and removing the interval maintaining agent from between the cores;
The manufacturing method of the structure which has a clearance gap between the core materials characterized by including. In the core material fixing step, the plurality of core materials are fixed on the first member using a bonding agent having a heat resistant temperature higher than the melting point of the spacing agent,
6. The space between the core materials according to claim 5, wherein, in the space retaining agent removing step, the space retaining agent is heated to a temperature equal to or higher than a melting point of the space retaining agent and lower than a heat resistant temperature of the bonding agent. For producing a structure having a gap in the gap. Before the spacing agent filling step, including a core material temporary fixing step of temporarily fixing the plurality of core materials in a state of having a gap therebetween,
7. The method according to claim 5, further comprising a temporary fixing releasing step of releasing temporary fixing of the plurality of core members after the spacing agent filling step and before the core member fixing step. The manufacturing method of the structure which has a clearance gap between the core materials of description.   The said core material is rod-shaped or needle-shaped, The manufacturing method of the structure which has a clearance gap between core materials of any one of Claim 5-7 characterized by the above-mentioned. A manufacturing method of a structure in which a core member having a gap is provided, the first member and a core member having a gap standing on the first member,
An interval holding agent filling step of filling an interval holding agent into the gap of the core material having a gap;
A core material fixing step of fixing the core material, the distance of which is maintained by the space maintaining agent, on the first member;
An interval holding agent removing step of dissolving and removing the interval holding agent from the gap;
The manufacturing method of the structure by which the core material which has the clearance gap characterized by including is fixed. In the core material fixing step, the core material is fixed on the first member using a bonding agent having a heat resistance higher than the melting point of the spacing agent,
The clearance gap according to claim 9, wherein, in the space retention agent removing step, the space retention agent is heated to a temperature equal to or higher than a melting point of the space retention agent and lower than a heat resistant temperature of the bonding agent. A method of manufacturing a structure having a core material fixed thereto. After the core material fixing step and before the spacing agent removing step,
The method for manufacturing a structure with a fixed core material having a gap according to claim 9, further comprising a step of fixing a second member on a side of the core material opposite to the first member. .

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