JP4227655B2 - Molding form of molded compressed outer structure fiber panel - Google Patents

Description

  The present invention relates to a molding frame of a molded compressed outer structure fiber panel, and in particular, an open cell lattice composed of a plurality of ribs, a continuous flat plate covering one opening of the lattice, and the other opening. The present invention relates to a forming mold used for manufacturing a molded compressed outer structure fiber panel having a structure including a flange covering a part, and a structure in which the lattice, the flat plate, and the flange are integrally formed by dense compressed fibers.

  Patent Document 1 discloses a method for producing a molded compressed outer structure fiber panel having an open cell lattice. The manufacturing method is generally as follows as shown in FIG.

  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 moisture concentration of about 99% (see FIG. 6A). Subsequently, the slurry S is placed on the mold 50 and dehydrated by suction from the lower surface of the mold and / or simple press (pre-press) from the upper and lower surfaces of the mold, and the slurry S has a moisture concentration. The dehydrated cake K is about 50% (see FIG. 6B).

  Thereafter, the forming mold 50 is conveyed to a hot press 60, and the dehydrated cake K is heated and compression-molded by applying vertical pressure to the mold under heating [see FIG. 6 (c)].

  After the molding is completed, the molded product X is taken out from the hot press 60 together with the mold 50, and the molded product X is removed from the mold 50 [see FIG. 6 (d)].

  Here, the mold 50 used in the manufacture of the molded compressed outer structure fiber panel having the open cell lattice will be described in detail. As shown in FIG. 7, a plurality of rectangular plates having a certain degree of rigidity are provided. A porous carrier 52 having a through-hole 51 formed therein, a belt-like press stopper 53 also serving as a reinforcement of the porous carrier 52 attached to the peripheral plate surface of the porous carrier 52, and a plate of the porous carrier 52 It is composed of a plurality of hexagonal elastomer pads 54 geometrically arranged and fixed on the surface. The elastomer pad 54 is fixed to the porous carrier 52 by welding through the primer P as shown in FIG. 8, and the method is performed on the porous carrier 52 coated with the primer P. Next, as shown in FIG. 9, an uncured elastomer, such as silicon rubber, placed in the mold 70 is pressed and cured, and then the bottom surface of the pad 54 is welded onto the porous carrier 52 via the primer P. It is made using what you do.

By using the forming mold 50 having the structure as described above, moisture in the raw material can flow out to the outside through the through hole 51 formed in the plate surface of the porous carrier 52 during suction or compression. Further, as shown in FIG. 10, the elastomer pad 54 shrinks in the longitudinal direction when compressed under heating by the hot press 60, and simultaneously spreads in the lateral direction, so that not only the direction perpendicular to the raw material fiber K filled between the pads 54 is. Pressure is also applied in a parallel direction, and an open cell lattice 81 composed of a plurality of ribs as shown in FIG. 11, a continuous flat plate 82 covering one opening of the lattice 81, and the other opening A fiber panel 80 having a structure in which a flange 83 covering a part of the fiber is integrally formed with dense compressed fibers can be formed.
Then, for example, two fiber panels 80 formed in this manner are bonded by overlapping the flanges 83 and 83 so that the open cell lattices 81 and 81 coincide with each other as shown in FIG. Therefore, it is used as a composite honeycomb structure panel.

Japanese Patent Laid-Open No. 9-195440

  However, in the molding mold 50 having the above structure, the elastomer pad 54 geometrically arranged and fixed on the plate surface of the porous carrier 52 by repeated use of the molding pad 50 from the plate surface of the porous carrier 52. Frequent peeling occurred, requiring frequent repairs.

  The present invention has been made in view of the problems of the background art described above, and its purpose is to provide a long-life molding mold frame in which an elastomer pad is difficult to peel off from the plate surface of a porous carrier even after repeated use. It is to provide.

  As a result of repeated studies to achieve the above object, the present inventors have determined that the cause of the peeling of the elastomer pad is due to the method of fixing the elastomer pad to the porous carrier itself, which is different from the conventional one. The present invention was completed by creating a fixing method.

  That is, in the fixing method using the adhesive force of the primer as in the conventional mold, the heat and steam generated in the heat compression molding process of the raw fiber by hot pressing during the fiber panel manufacturing process are The function of the primer, which improved the adhesiveness of the elastomer pad to the porous carrier at a low usage frequency, was lowered, and it was found that the elastomer pad was frequently peeled off.

  Therefore, the molding frame of the molded compressed outer structure fiber panel according to claim 1 includes a porous carrier in which a plurality of through holes are formed in a plate surface, and a geometrically arranged and fixed on the surface side plate surface of the porous carrier. In a molding frame of a molded compression hull structure fiber panel composed of a plurality of formed elastomer pads, a bush having a flange at the upper end of the shaft is formed of a hard material, and the elastomer is integrally molded so as to cover the bush The elastomer pad is constituted, and the shaft of the bush is physically implanted in the porous carrier.

In the above invention, the porous carrier may be a laminate of a plurality of porous plates. Examples of the material of the porous carrier include metals such as stainless steel and aluminum, and plastics. The elastomer used as the molding material for the elastomer pad may be any material as long as it has sufficient elasticity. For example, various synthetic rubbers including silicon rubber and chloroprene rubber can be used. It is preferable when considering durability and elasticity.
Further, “physically planted” includes not only chemical fixing by bonding but also pure mechanical fixing such as bolt and nut fixing, as well as fixing such as welding. In addition, examples of the hard material forming the bush include not only metals such as stainless steel and aluminum, but also a plastic harder than an elastomer (hereinafter referred to as a pad main body) that covers the bush.
Furthermore, examples of the raw material for the molded compressed outer structure fiber panel include natural fibers obtained from cellulose materials such as wood fibers and recycled paper, various plastics, synthetic fibers such as fiberglass, mineral fibers, and the like.

According to a second aspect of the present invention, the molding frame of the molded compression-skinned structure fiber panel is characterized in that the flange of the bush is formed in a non-circular shape.
Here, the term “non-circular” means not only a polygon but also an ellipse or an oval shape in which a part of the peripheral surface is formed into a flat surface and a notch is provided.

  According to a third aspect of the present invention, there is provided a molding frame for a molded compressed outer structure fiber panel according to the first or second aspect, wherein a male screw is erected downward on the lower surface of the shaft of the bush, and the porous carrier A screw insertion hole through which the male screw is inserted, the male screw of the bush is inserted into the hole, and the elastomer pad is fastened to the porous carrier by a nut screwed into the tip of the male screw. And

According to a fourth aspect of the present invention, there is provided a molding frame for a molded compressed outer structure fiber panel according to the third aspect, wherein a non-circular positioning portion is formed at a base portion of the male screw of the bush and a screw insertion hole of the porous carrier Is formed in a positioning hole having a shape corresponding to the shape of the positioning portion, the positioning portion of the bush is inserted into the positioning hole, and the bush is positioned on the porous carrier.
Here, “non-circular” has the same meaning as “non-circular” in claim 2.

  According to the molding frame of the molded compressed outer structure fiber panel of claim 1, the elastomer pad is fixed to the porous carrier so that the bush is formed of a hard material and the bush is covered with the elastomer. Since the bushing is mechanically implanted in a porous carrier, a primer that deteriorates due to the presence of heat or steam is not required, and the elastomer pad and porosity that are not easily affected by the presence of heat or steam It becomes a fixing method with a carrier, and becomes a forming mold that can sufficiently withstand repeated use.

  According to the molding frame of the molded compressed outer skin structure fiber panel according to claim 2, since the flange is formed in a non-circular shape, the pad main body is held without rotating with respect to the bush. In this case, the positioning of the pad body with respect to the bushing is ensured.

  The molding frame of the molded compressed outer structure fiber panel according to claim 3 can easily remove the elastomer pad from the porous carrier when the pad main body is broken, and easily attach a new elastomer pad to the porous carrier. be able to.

  According to the molding frame of the molded compressed outer structure fiber panel of claim 4, the bush positioning portion is formed in a non-circular shape, and the non-circular portion is inserted into the same shape hole of the porous carrier. Positioning relative to the carrier is ensured, thereby ensuring positioning of the elastomeric pad relative to the porous carrier.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a mold for forming a molded compressed outer structure fiber panel according to the present invention will be described below in detail with reference to the drawings.

  As shown in FIG. 1, the mold 1 is attached to a rectangular porous carrier 2 having a plurality of through holes formed on the plate surface, and to the peripheral plate surface of the porous carrier 2 to reinforce the porous carrier 2. And a plurality of elastomer pads 4 geometrically arranged and fixed to the plate surface of the porous carrier 2. The porous carrier 2 may be configured by a single plate, but in the present embodiment, the porous carrier 2 is configured by overlapping two plates. Moreover, the thing without the said strip | belt-shaped press stopper 3 is also contained in the shaping | molding die frame said by this invention.

  The porous carrier 2 is composed of a punching metal 2a having a thin plate thickness and a call plate 2b having a certain degree of rigidity (plate thickness) (see FIG. 5). The punching metal 2a has, for example, through-holes 5a having a diameter of about 0.6 mm and intervals of about 1.5 mm on a plate surface of a rectangular stainless steel plate having a thickness of 0.6 mm, a length of 3,160 mm, and a width of about 1,315 mm. It is the thing of the structure formed by. On the other hand, the call plate 2b is slightly larger than the punching metal 2a and has a rigidity. For example, the plate surface of a rectangular stainless steel plate having a thickness of 3.0 mm, a length of 3,220 mm, and a width of about 1,370 mm. The through holes 5b having a diameter of about 3 mm are formed at intervals of about 6 mm.

  The strip-shaped press stopper 3 is a stainless steel member attached to the peripheral plate surface of the porous carrier 2 for the purpose of reinforcing the porous carrier 2 and regulating the press thickness by hot pressing. For example, the thickness is 9.5 mm, the width is 40 mm, and the length is the same as the length of the call plate 2 b constituting the porous carrier 2, that is, two pieces of about 3,220 mm, and the width of the call plate 2 b It consists of two lengths of the press stopper minus the width, ie about 1,290 mm, and these members are fixed to the peripheral plate surface of the call plate 2b by means of screws or welding. Has been. The punching metal 2a is assembled by loosely fitting the periphery thereof into a notch formed in the press stopper 3 fixed to the call plate 2b.

  The elastomer pad 4 defines the structure of the lattice in the fiber panel manufactured by the geometrical arrangement on the surface side plate surface of the porous carrier 2 and the mutual spacing. For example, the elastic pad 4 is made of elastic silicon rubber and has a height of 20 mm. It is formed as a trapezoidal body having a regular hexagonal shape with a side length of about 15 mm as a bottom surface, and is geometrically arranged and fixed on the plate surface of the punching metal 2 a constituting the porous carrier 2.

  The elastomer pad 4 is constituted by a bush 6 fixed to a punching metal 2 a constituting the porous carrier 2 and a pad body 7 integrally formed with an elastomer so as to cover the bush 6.

  As shown in FIG. 2, the bush 6 includes a cylindrical shaft 8, a flange 9 formed on the upper portion of the shaft 8, a male screw 10 erected on the lower surface of the shaft 8, and the male screw 10. And a quadrangular positioning portion 11 formed in the base portion. The flange 9 has notches 9a and 9a formed by planes parallel to the circular circumferential surface, and the positioning portion 11 has a cross section larger than the outer diameter of the male screw 10 and larger than the outer diameter of the shaft 8. The positioning portion 11 is formed to be smaller than the punching metal 2a.

  On the other hand, a positioning hole 12 that is slightly larger than the cross-sectional area of the positioning portion 11 of the bush 6 is formed at a portion where the elastomer pad 4 of the punching metal 2a is attached.

  As shown in FIG. 3, the bush 6 is inserted into the positioning hole 12 of the punching metal 2 a with the male screw 10, and the positioning portion 11 of the bush 6 is inserted into the positioning hole 12. By screwing and fastening 13, the punching metal 2 a is implanted.

For example, as shown in FIG. 4, the elastomer pad 4 is formed by disposing the elastomer pad forming mold 20 so as to cover the bush 6 implanted in the punching metal 2a, and the mold 20 and the punching metal 2a. Into the cavity 21 defined by the above, the uncured elastomer is injected and filled from the upper opening 22 of the elastomer pad forming mold 20, and the mold is filled with the mold after the filled elastomer is cured at room temperature or heat. It is formed by demolding 20.
As described above, the elastomer pad 4 can be formed integrally with the elastomer so as to cover the bush 6 without being molded on the punching metal 2a.

  As shown in FIG. 5, the molding mold 1 according to the present invention manufactured as described above is embedded in the elastomer pad body 7 so that the elastomer pad 4 is fixed to the porous carrier 2 (punching metal 2a). Since the mechanical force of sandwiching the porous carrier 2 (punching metal 2a) by the male screw 10 and the nut 13 of the bush 6 is used, a primer that deteriorates due to the presence of heat or steam is not necessary, This is a method of fixing the elastomer pad 4 and the porous carrier 2 that are not easily affected by the presence of steam. Moreover, since the flange 9 of the bush 6 bites into the pad body 7, the pad body 7 is prevented from being detached from the bush 6. Therefore, even if the molding frame 1 is repeatedly used in the molding process of the molded compressed outer structure fiber panel shown in FIG. 6, the elastomer pad 4 is hardly peeled off and can be used for a long time.

  Such a forming mold 1 is used for forming a molded compressed outer structure fiber panel according to the procedure shown in FIG. 6. When the dehydrated cake K is heat compression molded, it is perpendicular to the mold 1 under heating. When the pressure in the direction is applied, only the upper part of the pad main body 7 is greatly deformed outward as shown by a two-dot chain line in FIG. 5, and as a result, a thick flange 83 is obtained. This is because the elastomer positioned below the flange 9 of the bush 6 is less affected by the pressure in the vertical direction and its deformation is suppressed.

  The preferred embodiments of the molding form according to the present invention have been described above, but the present invention is not limited to the above-described embodiments, and the technical idea of the present invention described in the claims is not limited thereto. It goes without saying that various modifications and changes can be made within the scope.

It is the perspective view which showed notionally an example of the formwork used for manufacture of the compressed fiber panel which concerns on this invention. It is the disassembled perspective view which showed the part of the bush and porous carrier which comprise some elastomer pads in the mold used for manufacture of the compressed fiber panel which concerns on this invention. It is sectional drawing which showed the state which implanted the bush in the porous carrier. It is sectional drawing which showed the process of mold-molding a pad main body integrally with a bush. It is sectional drawing which showed the state in which the bush was installed on the porous carrier. It is the conceptual diagram which showed the manufacturing process of a shaping | molding compression outer structure fiber panel, Comprising: (a) is the manufacturing process of raw material slurry, (b) is the process of placing the raw material on a formwork, (c) is the heating of a raw material (D) is sectional drawing which each showed the peeling process from the formwork of a product, and a compression process. It is the perspective view which showed the conventional forming mold. It is sectional drawing which showed the fixation structure of the elastomer pad of the conventional mold, and a porous carrier. It is sectional drawing which showed the fixing method of the elastomer pad of the conventional manufacturing method of a mold, and a porous carrier. It is the conceptual sectional drawing which expanded and showed the state of the heat compression molding process of raw material fiber. It is a perspective view of a shaping | molding compression outer structure fiber panel. It is the fragmentary sectional view which showed the panel of the composite honeycomb structure formed by joining two fiber panels.

Explanation of symbols

A Raw material S Slurry K Dehydrated cake X Molded product 1 Mold frame 2 Porous carrier 2a Punching metal 2b Coal plate 3 Press stopper 4 Elastomer pad 5, 5a, 5b Through hole 6 Bush 7 Pad body 8 Shaft 9 Flange 9a Notch 10 Male screw 11 Positioning part 12 Positioning hole 13 Nut 20 Formwork 21 Cavity 22 Opening

Claims (4)

  A molded compressed outer structure fiber panel comprising a porous carrier having a plurality of through holes formed on a plate surface and a plurality of elastomer pads geometrically arranged and fixed on the surface side plate surface of the porous carrier. In the molding frame, a bush having a flange at the upper end of the shaft is formed of a hard material, and an elastomer is integrally formed to cover the bush to constitute the elastomer pad, and the shaft of the bush is used as the porous carrier. A molded form of a molded compressed outer structure fiber panel, characterized by being physically implanted.   2. The molding frame of the molded compressed outer structure fiber panel according to claim 1, wherein the flange of the bush is formed in a non-circular shape.   On the lower surface of the shaft of the bush, a male screw is erected downward, and a screw insertion hole is formed through which the male screw is inserted into the porous carrier, and the male screw of the bush is inserted into the hole. 3. The molded frame of a molded compressed outer structure fiber panel according to claim 1 or 2, wherein the elastomer pad is fastened to the porous carrier by a nut screwed to the tip.   A non-circular positioning portion is formed in the base of the male screw of the bush, and a screw insertion hole of the porous carrier is formed in a positioning hole having a shape corresponding to the shape of the positioning portion, and the positioning of the bush in the positioning hole 4. The molded form of a molded compressed outer structure fiber panel according to claim 3, wherein the bush is positioned on a porous carrier by inserting a portion.

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