JP2001260155A - Method for manufacturing retaining mold for molding panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a retaining mold for molding a panel, capable of preventing the leakage of an elastomer in an uncured state to the through-holes bored in the plate surface of a porous carrier and the closure of the through-holes caused by the curing of the elastomer. SOLUTION: In the method for manufacturing the retaining mold for molding the panel constituted of a porous carrier having a plurality of the through-holes bored threrein and a plurality of elastomer pads geometrically arranged and fixed on the surface of the porous carrier, the porous carrier 2 is placed on a plate 20 in such a state that a sheet 10 with a self-adhesive layer is bonded to the rear surface of the porous carrier and the retaining mold 40 for molding the elastomer pads is placed on the porous carrier through an elastic sheet 30 having through holes 31, which have the same shape as the bottom part of each of the elastomer pads, bored therein at the arranging and fixing positions of the elastomer pads and the retaining mold 40 for molding the elastomer pads is filled with the elastomer in an uncured state to manufacture the retaining mold for molding the panel, wherein the elastomer pads are geometrically arranged and fixed on the surface of the porous carrier.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a mold for a panel, and more particularly, to an open cell grid formed by a plurality of ribs, a continuous flat plate covering one opening of the grid, and A flange covering a part of the other opening,
The present invention relates to a method for manufacturing a forming mold suitable for manufacturing a fiber panel having a honeycomb structure in which the lattice, the flat plate, and the flange are integrally formed by dense compressed fibers.

[0002]

2. Description of the Related Art For example, Japanese Patent Application Laid-Open No. 9-195440 discloses a method of manufacturing a molded compressed outer skin structure fiber panel having an open cell grid. The outline of such a manufacturing method is generally as follows as shown in FIG.

[0003] First, a raw material A such as wood fiber or recycled paper is pulped with a strong stirring force to obtain a fiber-containing slurry S having a water concentration of about 99% (see FIG. 7 (a)). Subsequently, the slurry S is cast on the forming mold 100 of the panel, and is dewatered by suction from the lower surface of the mold and / or simple press (prepress) from the upper and lower surfaces of the mold. Is dehydrated cake K having a water concentration of about 50% [FIG. 7 (b)].
reference〕.

After that, the forming mold 100 is hot-pressed 1
Then, the dewatered cake K is heated and compressed by applying a vertical pressure to the mold under heating (see FIG. 7C).

After the molding is completed, the molded article X is taken out of the hot press 110 together with the mold 100, and the molded article X is released from the panel mold 100 (see FIG. 7 (d)).

Here, the molding form 100 used for manufacturing the molded compressed skin structure fiber panel having the open cell grid will be described in detail. As shown in FIG. A plurality of through holes 101 in the plate
And a strip-shaped press stopper 103 attached to the peripheral plate surface of the porous carrier 102 and also serving to reinforce the porous carrier 102. And a plurality of elastomer pads 104 having a hexagonal cross section fixed and arranged in a fixed manner.

[0007] The mold 10 for forming a panel having the above structure.
By using 0, moisture in the raw material can be discharged to the outside at the time of suction or compression through the plurality of through holes 101 formed in the plate surface of the porous carrier 102,
Further, as shown in FIG. 9, the elastomer pad 104 contracts in the vertical direction when compressed under heating by the hot press 110 and simultaneously expands in the horizontal direction. An open cell grid 121 composed of a plurality of ribs as shown in FIG.
A fiber panel 120 having a structure in which a continuous flat plate 122 covering one opening and a flange 123 covering a part of the other opening is integrally formed of dense compressed fibers can be formed.

[0008]

Here, a method for manufacturing a panel forming mold 100 used for forming the above-mentioned molded and compressed envelope-structured fiber panel 120 is as shown in FIG.
First, the porous carrier 102 is placed directly on the plate 130, and the elastomer pad molding form 140 for molding the elastomer pad is placed thereon, and the elastomer in the elastomer pad molding form 140 is filled with the uncured elastomer. By doing so, the elastomer pad 104
The bottom of the porous carrier 102 enters the through hole 101 of the porous carrier 102 in a wedge shape, and the panel forming form 100 to which the elastomer pad 104 is fixed in a state of being welded to the surface side plate surface of the porous carrier 102 is manufactured. Alternatively, as shown in FIG. 12, the porous pad 102 is placed on a plate 130 with a backing material forming frame 150 interposed therebetween, and an elastomer pad is formed above the porous carrier 102. Place the frame 140,
The elastomer pad 104 is filled by filling the uncured elastomer into the through holes 101 of the porous carrier 102 communicating with the insides of the molds 40 and 150 and both molds.
And a backing member connected to the bottom surface of the porous carrier 102 by a connecting member via a through hole of the porous carrier 102 to manufacture a panel forming mold 100 fixed with the porous carrier sandwiched from the front and back surfaces thereof. Was to do.

However, in the above-described method for manufacturing the panel forming mold 100, the method for manufacturing the panel between the porous carrier 102 and the elastomer pad forming form 140, between the plate 130 and the porous carrier 102, or The filled uncured elastomer leaks from between the backing material forming mold 150 and the porous carrier 102 and cures, so that, for example, as shown in FIG. In some cases, a panel forming mold 100 in which a large number of provided through holes 101 are closed by leaked elastomer is manufactured. In this case, when forming or compressing the above-described molded and compressed outer-structured fiber panel 120, the moisture in the raw material is removed by the through-hole 101 during suction or compression.
As a result, the molding mold 100 cannot flow to the outside through the through hole, and hinders the molding of the fiber panel 120. Therefore, it is necessary to remove the elastomer that has blocked the through hole 101, and the molding mold 100 Had a marked decrease in workability.

The present invention has been made in view of the problems of the above-mentioned conventional method for manufacturing a panel forming mold, and has as its object to provide a through hole formed in a plate surface of a porous carrier. It is an object of the present invention to provide a method of manufacturing a panel forming form capable of preventing leakage of an uncured elastomer and blocking of the through-hole due to its curing.

[0011]

Means for Solving the Problems As a result of repeated studies to achieve the above object, the present inventors have found that a sheet having elasticity or tackiness is formed on a portion where there is a fear that an uncured elastomer leaks out. The present inventors have found that the above object can be easily achieved by interposing, and completed the present invention.

That is, the present invention comprises a porous carrier having a plurality of through holes formed in a plate surface, and a plurality of elastomer pads geometrically arranged and fixed on the surface side plate surface of the porous carrier. A method for producing a molded form of a panel, comprising: a step of attaching the porous carrier with an elastic sheet interposed therebetween or a sheet with an adhesive layer to at least a rear side plate surface of the porous carrier. In the state where the elastic sheet having a through hole having the same shape as the bottom of the elastomer pad is interposed at the fixed position of the elastomer pad on the porous carrier, A sheet with an adhesive layer in which a through hole having the same shape as the bottom of the elastomer pad is perforated at a position where the elastomer pad is fixed is attached to at least the surface side plate surface of the porous carrier. Placing the elastomeric pad molding form for molding the elastomeric pad while being,
By filling the uncured elastomer in the elastomer pad forming mold, a panel forming mold in which the elastomer pad is geometrically arranged and fixed on the surface side plate surface of the porous carrier is produced. did.

Further, the present invention provides a porous carrier having a plurality of through holes formed in a plate surface, a plurality of elastomer pads geometrically arranged on a surface side plate surface of the porous carrier, Production of a panel forming mold composed of a plurality of backing members arranged on the back side plate surface of the porous carrier, and a connecting member fitted into a through hole of the porous carrier connecting the elastomer pad and the backing member A method, wherein at least a portion of the backing material forming mold for molding the backing material, which is in contact with the porous carrier, is formed of an elastic material, and the porous material is formed in a state where the backing material forming form is interposed. An elastic sheet in which a carrier is placed on a plate and a through-hole having the same shape as the bottom of the elastomer pad is formed on the porous carrier at a fixed position of the elastomer pad on the porous carrier. A sheet with an adhesive layer in which a through hole having the same shape as the bottom of the elastomer pad is perforated at least at the surface side plate surface of the porous carrier in the interposed state or at the position where the elastomer pad is arranged and fixed. By placing an elastomer pad molding form for molding the above elastomer pad, filling the uncured elastomer into the through holes of the porous carrier communicating between the both mold forms and both the mold forms, A panel forming form in which the elastomer pad is geometrically arranged and fixed on the surface side plate surface of the porous carrier is manufactured.

The elastic sheet used in the present invention is preferably a sponge sheet having a density of 0.15 to 0.25 kg / m ³ , and the raw material is preferably a fluoro rubber, a chloroprene rubber, a nitrile rubber, or the like. This is because the leakage of the uncured elastomer can be suppressed even with a rubber-like material, but the sponge-like one is more reliable. Also, silicone grease and double-sided adhesive polyester tape had no effect of suppressing leakage. Further, as the sheet with an adhesive layer used in the present invention,
In order to efficiently cure the uncured elastomer, a sheet having a small thickness and a high thermal conductivity is preferable, and a heat-resistant masking tape, a Teflon (registered trademark) tape,
Gum tape or the like can be used, and among them, a heat-resistant masking tape is particularly preferable because it is inexpensive, has excellent heat resistance, and the tape can be easily removed after the mold is manufactured.

Further, in the present invention, in order to further firmly fix the formed elastomer pad and the porous carrier, the surface side plate surface of the porous carrier is provided with:
It is preferable to apply a primer at least before filling the elastomer in an uncured state. As a primer to be used, for example, XP8 manufactured by GE Toshiba Silicone Co., Ltd.
1-B5931 or Dow Corning Asia, X
A2869 and the like.

Further, from the viewpoint of accelerating the curing of the uncured elastomer and improving the resilience of the elastomer pad to be formed, the plate on which the porous carrier used in the present invention is mounted may be used. Preferably, a hot plate having a heating device is used, and the uncured elastomer filled in the mold is heated and cured by the hot plate. The heating temperature in this case is preferably equal to or higher than the load temperature at the time of using the molding die of the panel.

In the present invention, from the viewpoint of further improving the curability of the uncured elastomer, an acrylic paint or a toluene-based liquid such as a barrier coat No. 1 manufactured by Shin-Etsu Chemical Co., Ltd. is used. It is preferable to apply No. 6 or the like to a contact surface with an uncured elastomer such as an interposed elastic sheet.

In the present invention, the elastomer, which is a molding material such as a pad and a backing material, may be any material having a sufficient elasticity. For example, various synthetic rubbers including silicone rubber, chloroprene rubber and the like may be used. Although it can be used, addition type liquid silicone rubber is preferable in consideration of durability and elasticity. The material of the porous carrier may be a metal such as stainless steel or aluminum, or a plastic. Further, the material of the pad forming mold is preferably made of aluminum, hard urethane or the like in consideration of durability and dimensional stability, but is not limited thereto. In addition, since the backing material forming mold does not require much dimensional accuracy, the whole may be formed of an elastic material, for example, fluorine rubber, chloroprene rubber, nitrile rubber, or the like, and only the portion that contacts the porous carrier is used. May be formed of the elastic material.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.

The panel forming mold 1 referred to in the present invention comprises a rectangular porous carrier 2 having a plurality of through holes formed in a plate surface as shown in FIG. The carrier comprises a band-shaped press stopper 3 attached to a peripheral plate surface thereof also for reinforcing the carrier, and a plurality of elastomer pads 4 geometrically arranged and fixed on the plate surface of the porous carrier. is there. In addition, the said porous carrier 2 is
It may be composed of a single plate, or may be composed of a plurality of laminated plates. In addition, those without the band-shaped press stopper 3 are also included in the panel forming mold frame according to the present invention.

The porous carrier 2 has a thickness of, for example, 0.1 mm.
It has a structure in which through holes 5 having a diameter of about 0.9 mm are formed at intervals of about 1.5 mm in a rectangular stainless steel plate having a length of about 6 mm, a length of about 3,300 mm, and a width of about 1,400 mm. A band-shaped press stopper 3 described later is additionally provided on the surface.

The belt-shaped press stopper 3 is a stainless member attached to the peripheral plate surface of the porous carrier 2 for the purpose of reinforcing the porous carrier 2 and regulating the thickness of the press by hot pressing. Press stopper 3
Are, for example, two having a thickness of 9.5 mm, a width of 40 mm, and a length equal to the length of the porous carrier, that is, about 3,300 mm, and a width of two press stoppers based on the width of the porous carrier. Length, ie 1,320mm
These members are fixed to the peripheral plate surface of the porous carrier 2 by means such as screws or welding.

The elastomer pad 4 regulates the configuration of the grid in the panel manufactured by the geometrical arrangement on the porous carrier 2 and the mutual interval. For example, the elastic pad 4 is made of silicon rubber having elasticity and has a height of about 15 mm.
The trapezoid is formed as a trapezoid having a regular hexagon with a side length of about 8 mm as a bottom surface, and is geometrically arranged and fixed to the plate surface of the porous carrier 2.

As shown in FIG. 2, the elastomer pad 4 is fixed to the porous carrier 2 by inserting the bottom of the elastomer pad 4 into the through hole 5 of the porous carrier 2 through the primer P as shown in FIG. At the same time, it is formed by welding to the surface side plate surface of the porous carrier 2.
As shown in FIG. 3 or FIG. 4, the backing material 6 present on the back side of the porous carrier 2, the elastomer pad 4 present on the front side, and the penetration of the porous carrier 2 connecting the two. The connection member 7 to be fitted into the hole is formed integrally with an elastomer of the same material. Note that the one shown in FIG. 3 uses the through-hole 5 formed in the porous carrier 2 as it is as the through-hole into which the connection member 7 fits.
In FIG. 5, a through hole 8 slightly smaller than the bottom area of the elastomer pad 4 is further formed in the plate surface of the porous carrier 2.

As a manufacturing method according to the present invention for fixing the elastomer pad 4 having the structure shown in FIG. 2 and the porous carrier 2, for example, as shown in FIG. Layered sheet, for example, heat-resistant masking tape (Sumitomo 3M, No. 214-3MNE)
10 is mounted on the plate 20 in a state where it is adhered to the rear side plate surface of the porous carrier 2, and the same shape as the bottom of the elastomer pad is provided on the porous carrier 2 at the position where the above-mentioned elastomer pad is arranged and fixed. Elastomer pad molding die for molding the above-mentioned elastomer pad 4 with an elastic sheet, for example, chloroprene sponge rubber (density: 0.19 kg / m ³ , thickness: 2 mm) 30 in which a through hole 31 is formed. A frame 40 is placed, and an uncured elastomer is placed in the elastomer pad forming mold 40.
For example, a filling mold liquid silicone rubber is filled to produce a panel forming mold 1 in which the elastomer pad 4 is geometrically arranged and fixed on the front side surface of the porous carrier 2.

The manufacturing method according to the present invention for fixing the elastomer pad 4 having the structure shown in FIG. 3 or 4 and the porous carrier 2 includes, for example, as shown in FIG. The backing material forming mold 50 for forming the material 6 is made of an elastic material, for example, fluoro rubber (density: 0.
2 kg / m ³ , thickness: 2 mm), and the porous carrier 2 with the backing material forming mold 50 interposed therebetween.
Is placed on the plate 20, and an elastic sheet such as a nitrile sponge rubber (e.g., a nitrile sponge rubber) is formed on the porous carrier 2 in which a through hole 61 having the same shape as the bottom of the elastomer pad is formed at the fixed position of the elastomer pad. density:
(0.15 kg / m ³ , thickness: 2 mm) The elastomer pad forming mold 40 for molding the elastomer pad 4 is placed with the 60 interposed therebetween, and the both molds 40 and 5 are placed.
By filling an uncured elastomer, for example, an addition type liquid silicone rubber, into the through-holes 5 or 8 of the porous carrier 2 communicating with the inside of the mold and the inside of both molds, the above-mentioned elastomer pad makes the surface side plate of the porous carrier. The panel forming form 1 geometrically arranged and fixed on the surface is manufactured.

If necessary, the uncured elastomer is pressed from above with the mold 40 or 50.
It may be filled inside. Further, in the above-described manufacturing method according to the present invention for realizing the fixing between the elastomer pad 4 having the structure shown in FIG. 2 and the porous carrier 2, the fixing between the formed elastomer pad 4 and the porous carrier 2 is more firmly performed. In order to achieve this, it is preferable to apply a primer to at least the uncured elastomer on the front side plate surface of the porous carrier 2. Further, the plate 20 on which the porous carrier 2 used in the present invention is placed is a hot plate having a heating device, and the mold 40 or 5 is formed by the hot plate.
It is preferable that the uncured elastomer filled in the inside of the tube is cured by heating to accelerate the curing of the uncured elastomer and to improve the resilience of the formed elastomer pad 4. Further, from the viewpoint of further improving the curability of the uncured elastomer, a barrier coat No. It is preferable to apply 6 or the like to the surface of the elastic sheet 10, 30, 50, 60 or the like that is in contact with the uncured elastomer.

In the molded form 1 of the panel manufactured as described above, the uncured elastomer filled in the form leaks through the through holes 5 of the porous carrier 2 other than the fixing portions of the elastomer pads 4. It does not become closed due to curing, and for example, when molding or compressing the molded fiber panel, it is preferable to flow moisture in the raw material to the outside through the through holes 5 at the time of suction or compression. It becomes a molding frame of the panel that can be made.

Although the embodiment of the method of manufacturing a panel forming form according to the present invention has been described above, the present invention is not limited to the above-described embodiment, and the technical idea of the present invention is not limited thereto. Various modifications and changes are possible within the scope.

For example, in the above-described embodiment, a description has been given of a case where one plate is used as the porous carrier 2. However, the porous carrier 2 may be formed by stacking a plurality of porous plates. Alternatively, the porous carrier 2 may be formed in a belt shape or a wheel shape, and the porous carrier 2 may be used as a molding frame of a panel in which the elastomer pad 4 is fixed by the above-described method according to the present invention.

[0031]

As described above, according to the method for manufacturing a panel forming form according to the present invention described above, the uncured state is formed in the through hole formed in the plate surface of the porous carrier other than the fixing portion of the elastomer pad. This has the effect of preventing leakage of the elastomer and blocking of the through-hole due to its curing.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a mold for forming a panel manufactured by a manufacturing method according to the present invention.

FIG. 2 is a cross-sectional view showing an example of a forming mold of a panel manufactured by the manufacturing method according to the present invention.

FIG. 3 is a cross-sectional view showing another example of a molding die of a panel manufactured by the manufacturing method according to the present invention.

FIG. 4 is a cross-sectional view showing still another example of a molding die of a panel manufactured by the manufacturing method according to the present invention.

FIG. 5 is a conceptual cross-sectional view showing one example of a method for manufacturing a panel forming mold according to the present invention.

FIG. 6 is a conceptual cross-sectional view showing another example of a method for manufacturing a panel forming mold according to the present invention.

FIGS. 7A and 7B are conceptual diagrams showing a manufacturing process of a molded compressed skin structure fiber panel, wherein FIG.
(B) is a view showing a step of placing a raw material on a mold, (c) is a step of heating and compression molding the raw material, and (d) is a view showing a step of peeling the product from the mold.

FIG. 8 is a perspective view showing a molding die of a conventional panel.

FIG. 9 is a conceptual cross-sectional view showing, in an enlarged manner, a state of a raw fiber heating and compression molding step.

FIG. 10 is a perspective view of a molded compressed skin structure fiber panel.

FIG. 11 is a conceptual cross-sectional view illustrating a method for manufacturing a conventional panel forming mold.

FIG. 12 is a conceptual cross-sectional view showing another example of a conventional method for manufacturing a panel forming mold.

FIG. 13 is a cross-sectional view of a forming mold of a panel manufactured by a conventional manufacturing method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Forming mold of panel 2 Porous carrier 3 Press stopper 4 Elastomer pad 5 Through hole of porous carrier 6 Backing material 7 Connecting member 8 Through hole of porous carrier 10 Sheet with adhesive layer 20 Plate 30 Elastic sheet 31 For elastic sheet Formed through hole 40 Elastomer pad forming form 50 Backing material forming form formed of elastic material 60 Elastic sheet 61 Through hole formed in elastic sheet P Primer

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hiroomi Yamada 3-8-1, Nishikanda, Chiyoda-ku, Tokyo Taiheiyo Cement Co., Ltd. Construction Materials Business Development Office (72) Inventor Seido Nagayasu Nishikanda, Chiyoda-ku, Tokyo 3-8-1 Taiheiyo Cement Co., Ltd. Building Materials Business Development Office F-term (reference) 4F202 AA45 AD08 AH48 AJ10 CA09 CB01 CK09 CM26 CN01 CQ01 4F204 AA45 AD08 AG20 AH48 FA01 FB01 FF01 FN07 FN11 FN12 FN15 FQ01 FQ15

Claims (4)

[Claims] 1. A panel comprising: a porous carrier having a plurality of through holes formed in a plate surface; and a plurality of elastomer pads geometrically arranged and fixed on a surface side plate surface of the porous carrier. A method for producing a molding frame, wherein the porous carrier is placed on a plate in a state where an elastic sheet is interposed, or in a state where a sheet with an adhesive layer is adhered to at least the rear side plate surface of the porous carrier. While placing the elastomer pad on the porous carrier, an elastic sheet having a through-hole having the same shape as the bottom of the elastomer pad is interposed at the fixed position of the elastomer pad, or the arrangement of the elastomer pad A sheet with an adhesive layer having a through hole having the same shape as the bottom of the elastomer pad at a fixed position is attached at least to the surface side plate surface of the porous carrier. An elastomer pad molding form for molding the elastomer pad is placed, and the elastomer pad molding form is filled with an uncured elastomer, whereby the elastomer pad is geometrically formed on the surface side plate surface of the porous carrier. A method for manufacturing a panel forming mold, characterized by manufacturing a chemically fixed forming form. 2. A porous carrier having a plurality of through holes formed in a plate surface, a plurality of elastomer pads geometrically arranged on a front side plate surface of the porous carrier, and a back surface of the porous carrier. A plurality of backing materials arranged on the side plate surface,
A method for manufacturing a panel forming form comprising a connecting member fitted into a through hole of the porous carrier for connecting the elastomer pad and a backing material, the backing material forming mold for forming the backing material. At least a portion of the frame that comes into contact with the porous carrier is formed of an elastic material, and the porous carrier is placed on a plate with the backing material forming form interposed therebetween, and the porous carrier is placed on the porous carrier. In a state in which an elastic sheet having a through-hole having the same shape as the bottom of the elastomer pad is interposed at the position where the elastomer pad is fixed, the same shape as the bottom of the elastomer pad is disposed at the position where the elastomer pad is fixed. The above-mentioned elastomer pad in a state where a sheet with an adhesive layer having a through hole is attached to at least the surface side plate surface of the porous carrier. The elastomer pad for molding is placed by placing the mold for molding the elastomer pad to be molded and filling the uncured elastomer into the through-holes of the porous carrier that communicates with the inside of the two molds and the two molds. A method for manufacturing a forming mold for a panel, comprising manufacturing a forming mold fixed geometrically to a front side plate surface of a conductive carrier. 3. The panel forming mold according to claim 1, wherein a primer is applied to at least an uncured elastomer before filling the front side plate surface of the porous carrier. Production method. 4. A plate on which the porous carrier is placed is a hot plate having a heating device, and the uncured elastomer filled in the mold is heated and cured by the hot plate. The method for producing a panel forming form according to claim 1, 2 or 3.