JP2013123899A - Method for manufacturing compressed wood product and molding apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a compressed wood product and a molding apparatus, configured to easily form an opening and the like without deforming the compressed wood.SOLUTION: In the method for manufacturing a compressed wood product, compressed wood products 6, 7 of a three-dimensional shape having the opening 71 are manufactured by compressing the wood. The method includes: a forming process (Step S1) of forming a roughly bowl-like blank material 2 from a material wood 1 and forming an opening 2d; and a compressing process (Step S3) of compressing the blank material 2 of a predetermined shape having the opening 2d, while holding the blank material 2 with a pair of molds 11, 12, at least one of which is provided with an opening protrusion 122 to be fitted to the opening 2d.

Description

  The present invention relates to a compressed wood product manufacturing method and a molding apparatus for compressing and molding wood into a predetermined three-dimensional shape.

  In recent years, natural wood has attracted attention. Since wood has various grain patterns, individual differences occur depending on the location of the raw wood, and the individual differences are the individuality of each product. In addition, scratches and changes in color caused by long-term use may also have a unique texture and may be familiar to the user. For these reasons, wood has been attracting attention as a material that can produce unique and tasty products that are not found in products using synthetic resins and light metals, and its molding technology is also making rapid progress.

  Conventionally, as a technique for forming such wood, after compressing a piece of water softened and softened, and slicing the wood substantially parallel to the compression direction to obtain a plate-like primary fixed product, this primary fixed product is heated and absorbed by water. There are known a technique for forming into a predetermined three-dimensional shape, and a technique for forming a mold by temporarily fixing a piece of wood compressed in a softened state and putting the wood into a mold for recovery.

  As a technique for punching such compressed wood, a punch portion for punching a wood to be processed into a predetermined shape is moved through a guide hole into a first mold for compressing the wood, thereby moving the wood. A molding apparatus that performs punching while compressing is disclosed (for example, see Patent Document 1).

  In addition, at least one of the molds for compressing the wood is provided with a movable mold that penetrates the mold and is movable with respect to the mold, and after compressing the wood with the mold in a high-temperature and high-pressure steam atmosphere And a processing method and apparatus for moving the moving mold and releasing the wood part with which the moving mold abuts into the atmosphere, thereby causing the abutted wood part to explode from the inside to be shredded. Is disclosed (for example, see Patent Document 2).

JP 2005-205678 A JP 2006-305828 A

  However, in the above-described conventional technology, processing is performed after compression molding or simultaneously with compression molding, and therefore, stress may be released during processing and deformation of wood may occur.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a method for manufacturing a compressed wood product and a molding apparatus capable of easily forming an opening and the like without causing deformation of the compressed wood. And

  In order to solve the above-described problems and achieve the object, a compressed wood product manufacturing method according to the present invention is a compressed wood product manufacturing method for manufacturing a compressed wood product having a three-dimensional shape having an opening by compressing wood. A blank material having a substantially bowl shape is formed from the raw wood, and at least one of the shape forming step for forming the opening and a blank material having a predetermined shape including the opening is fitted to the opening. And a compressing step of compressing the blank material while being sandwiched between a pair of molds provided with possible opening convex portions.

  Moreover, the manufacturing method of the compressed wood product which concerns on this invention is the above-mentioned invention. By the pair of metal mold | die provided with the opening convex part which can fit the compressed wood after the said compression at least with the said opening part after compression. It has the shaping process shape | molded in the shape substantially similar to the said compressed wood, heating and clamping.

  Moreover, the manufacturing method of the compressed wood product which concerns on this invention WHEREIN: The said compression process compresses the said blank material so that opening area may become larger than the opening part of the said blank material in the said invention.

  Further, the molding apparatus of the present invention is a molding apparatus for producing a three-dimensional compressed wood product having an opening by compressing a substantially bowl-shaped blank material to be processed, and forms a pair with the blank material. A first mold and a second mold, and at least one of the first mold and the second mold has substantially the same opening shape as the opening, and the side surface is tapered. And the upper surface area of the opening convex portion is smaller than the opening area formed in the blank material, and the lower surface area of the convex portion is smaller than the opening area formed in the blank material. Is also large.

  In the molding apparatus of the present invention, in the above invention, the convex part includes a columnar part rising from the first mold and / or the second mold, and a tapered part having a tapered shape. Features.

  According to the present invention, a blank material having a substantially bowl shape is formed from a raw wood in a shaping process, an opening is formed, and a blank material having a predetermined shape provided with an opening is fitted to the opening. By compressing the blank material while fitting and sandwiching the opening convex portion in the opening portion with a pair of molds provided with at least one portion, it is possible to produce compressed wood without deformation and simplify the process There is an effect that it becomes possible.

FIG. 1 is a flowchart showing an outline of a method for manufacturing a compressed wood product according to an embodiment of the present invention. FIG. 2 is a diagram showing an outline of a shaping process of the method for manufacturing a compressed wood product according to the embodiment of the present invention. FIG. 3 is a diagram showing an outline of a compression step and a configuration of a mold in the method for manufacturing a compressed wooden product according to the embodiment of the present invention. 4 is a cross-sectional view taken along line AA in FIG. FIG. 5 is a cross-sectional view of a state in which a blank material is placed on a mold. FIG. 6 is a cross-sectional view showing a state in which the deformation of the wood is almost completed in the compression step of the compressed wood product manufacturing method according to the embodiment of the present invention. FIG. 7 is a perspective view showing the configuration of the wood after the drying step of the compressed wood product manufacturing method according to the embodiment of the present invention. FIG. 8 is a diagram showing a state before performing the heating shaping step of the compressed wood product manufacturing method according to the embodiment of the present invention. FIG. 9 is a diagram showing a state after the processing step of the compressed wood product manufacturing method according to the embodiment of the present invention. FIG. 10 is a diagram showing a state in which the heat shaping step of the method for manufacturing a compressed wood product according to the embodiment of the present invention is performed. FIG. 11 is a perspective view showing the configuration of the compressed wood product after the shaping step of the compressed wood product manufacturing method according to the embodiment of the present invention is completed. FIG. 12 is a perspective view showing an external configuration of a digital camera to which the compressed wood product manufactured by the compressed wood product manufacturing method according to Embodiment 1 of the present invention is applied as an exterior body. FIG. 13 is a perspective view showing a configuration of an exterior material of a digital camera to which the compressed wood product manufactured by the compressed wood product manufacturing method according to Embodiment 1 of the present invention is applied as an exterior body. FIG. 14 is a cross-sectional view showing the configuration of a mold used in the compression step of the compressed wood product manufacturing method according to Modification 1 of the embodiment of the present invention. FIG. 15 is a cross-sectional view showing the configuration of a mold used in the compression step of the compressed wood product manufacturing method according to Modification 2 of the embodiment of the present invention. FIG. 16: is sectional drawing which shows the structure of the metal mold | die used at the compression process of the manufacturing method of the compression wooden product which concerns on the modification 3 of embodiment of this invention. FIG. 17: is sectional drawing which shows the structure of the metal mold | die used at the compression process of the manufacturing method of the compressed wooden product which concerns on the modification 4 of embodiment of this invention. FIG. 18 is an enlarged cross-sectional view showing the configuration of the opening convex portion formed in the mold used in the compression step of the compressed wood product manufacturing method according to Modification 5 of the embodiment of the present invention.

  The best mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be described below with reference to the accompanying drawings. The drawings referred to in the following description are schematic, and when the same object is shown in different drawings, the dimensions, scales, and the like may be different.

(Embodiment)
FIG. 1 is a flowchart showing an outline of processing of a compressed wood product manufacturing method according to an embodiment of the present invention. First, a blank material having a predetermined shape is formed from the raw wood and an opening is formed (step S1). FIG. 2 is a diagram schematically showing an outline of the shaping process. In the shaping process, a blank 2 having a substantially dish shape is shaped from a raw wood 1 such as a solid material by cutting or the like. The raw material 1 may be selected from cypress, hiba, paulownia, cedar, pine, cherry blossom, cocoon, ebony, shidan, bamboo, teak, mahogany, rosewood, and the like. The log 1 may be lightly compressed wood.

  The blank material 2 includes two side plates that extend in a curved manner with respect to the main plate portion 2a from a flat main plate portion 2a having a substantially rectangular surface and two long sides facing each other on the surface of the main plate portion 2a. Part 2b, and two side plate parts 2c extending from each of the two short sides facing each other on the surface of main plate part 2a so as to be curved with respect to main plate part 2a. In the present embodiment, when the blank material 2 is formed, a predetermined opening 2d is formed in the main plate 2a.

  The blank material 2 has a volume obtained by adding in advance a volume to be reduced by a compression process described later. In addition, in FIG. 2, although the case where the grain G of the blank material 2 is a grid material substantially parallel to the fiber direction of the blank material 2 is shown, this is only an example. That is, the wood to be shaped in the shaping process may be a grain material or a mouthpiece material.

  Subsequently, the blank material 2 is softened by allowing the shaped blank material 2 to stand for a predetermined time in a steam atmosphere at a higher temperature and pressure than the atmosphere to absorb moisture excessively (step S2). Water vapor has a temperature of about 100 to 230 ° C. and a pressure of about 0.1 to 3.0 MPa (megapascal). Such a water vapor atmosphere can be realized, for example, by using a pressure vessel. When using a pressure vessel, it is softened by leaving the blank 2 in the pressure vessel. Instead of leaving the blank 2 softened in a steam atmosphere, the moisture contained in the blank 2 may be heated and softened by high frequency electromagnetic waves such as microwaves. It may be boiled and softened.

  Thereafter, the softened blank 2 is compressed (step S3). The blank member 2 having the opening 2d is sandwiched by fitting the protrusions into the opening 2d by a pair of molds each having an opening recess and an opening protrusion that are substantially the same as the opening shape of the opening 2d. While compressing the blank 2. In this compression step, the blank material 2 is held in a predetermined three-dimensional shape while holding the shape of the opening 2d by sandwiching the blank material 2 with a pair of molds in the same water vapor atmosphere as in the softening step and applying a compression force. Transform to shape. When the blank material 2 is softened in the pressure vessel, the blank material 2 may be subsequently compressed in the pressure vessel.

  FIG. 3 is a diagram illustrating an outline of the compression process and a configuration of a main part of a pair of molds used in the compression process. 4 is a cross-sectional view taken along line AA in FIG. As shown in FIGS. 3 and 4, the blank 2 is sandwiched between a pair of molds 11 and 12 and a predetermined compression force is applied.

  The mold 11 for applying a compressive force from above the blank material 2 during the compression step is a cavity mold including a smooth surface-shaped concave portion 111 that abuts on the protruding outer surface of the blank material 2. If the curvature radius of the surface of the portion that curves from the main plate portion 2a to the side plate portion 2c and that faces the mold 11 is RO, and the curvature radius of the surface of the recess 111 that contacts this surface is RA, The two radii of curvature RO and RA satisfy the relationship RO ≧ RA.

  On the other hand, the mold 12 for applying a compressive force from the lower side of the blank material 2 during the compression step is a core mold provided with a convex portion 121 that abuts on the recessed inner surface of the blank material 2. If the radius of curvature of the surface of the portion that curves from the main plate portion 2a to the side plate portion 2c and that faces the mold 12 is RI, and the curvature radius of the surface of the convex portion 121 that contacts this surface is RB, The two curvature radii RI and RB satisfy the relationship RI ≧ RB.

Further, the convex portion 121 is provided with a quadrangular pyramid-shaped opening convex portion 122 whose upper portion is cut off. The opening convex portion 122 has a shape substantially equal to the opening shape of the opening portion 2d. The concave portion 111 is provided with an open concave portion 112 having a quadrangular pyramid shape whose upper portion is cut off. The opening recess 112 has a shape substantially equal to the opening shape of the opening 2d. As shown in FIG. 4, the side plate portion 2b direction of the upper length W ₂ of the opening projection 122 and the opening recess 112, the side plate portion 2b direction of the opening 2d of the blank 2 shorter than the length W _1, the opening projection The bottom portion length W ₃ in the direction of the side plate 2 b of the portion 122 and the opening recess 112 is formed to be longer than the length W ₁ of the opening 2 d of the blank 2. Although not shown, the upper lengths of the opening convex portion 122 and the opening concave portion 112 in the direction of the side plate portion 2c are shorter than the lengths of the opening portion 2d of the blank 2 in the direction of the side plate portion 2b. The length of the bottom portion in the direction of the side plate 2b is longer than the length of the opening 2d of the blank 2. By making the length of each part as described above, as shown in FIG. 5, the opening 2 d of the blank material 2 can be fitted to the opening convex part 122 of the mold 12, thereby preventing the blank material 2 from shifting. it can. FIG. 5 is a cross-sectional view of the blank 2 placed on the mold 12.

  The molds 11 and 12 are clamped by a clamping device (not shown) after sandwiching the blank 2. FIG. 6 is a diagram illustrating a state in which the molds 11 and 12 that have been clamped are applying a compressive force to the blank material 2, and is a diagram illustrating a state in which the deformation of the blank material 2 is substantially completed. As shown in FIG. 7, the blank 2 receives a compressive force from the molds 11 and 12, and corresponds to a gap between the mold 11 and the mold 12 when the molds 11 and 12 are clamped. Deform to a dimensional shape. Moreover, since the opening part 2d of the blank material 2 is fitted by the opening convex part 122, the blank material 2 is compressed, maintaining the opening shape of the opening part 2d. In the compression step, a compressive force is continuously applied to the blank 2 for a predetermined time (1 to several tens of minutes) in the state shown in FIG.

  After the compression process is completed, the shape of the blank 2 is fixed by adding steam higher than the above-described steam to the periphery of the molds 11 and 12 while keeping the molds 11 and 12 clamped. (Step S4). When this immobilization process is performed in a pressure vessel, water vapor having a temperature higher than that in the compression step may be blown into the pressure vessel.

  Subsequently, the molds 11 and 12 and the blank material 2 are opened to the atmosphere or a negative pressure environment, and the blank material 2 is dried (step S5). At this time, if the temperature of the blank material 2 is lower than 100 ° C., the mold clamping state of the molds 11 and 12 is released, and the blank material 2 is dried by separating the mold 11 or 12 from the blank material 2. You may make it promote. The thickness of the blank 2 after completion of drying is preferably about 30 to 50% of the thickness of the blank 2 before compression. This corresponds to the compression rate of the blank material 2 being about 0.70 to 0.50. Hereinafter, the blank 2 finished up to the drying step is referred to as “wood 3”.

  FIG. 7 is a perspective view showing the configuration of the wood 3. The wood 3 shown in the figure has a main plate portion 3a and side plate portions 3b, 3c corresponding to the main plate portion 2a and the side plate portions 2b, 2c, respectively. An opening 3d is formed at the center of the main plate 3a. The opening 3 d has a tapered shape in accordance with the shape of the opening convex portion 122.

  Thereafter, the wood 3 is cut (step S6). Burrs and the like that have exuded from the wood in the compression process are attached to the end face of the opening 3d. This burr is removed by processing. Further, as shown in FIG. 8, notches 42 and the like corresponding to the shape of the final product are simultaneously processed by cutting. FIG. 8 is a perspective view showing the configuration of the wood 4. Hereinafter, the wood 3 finished up to the processing step is referred to as “wood 4”.

  Thereafter, the wood 4 is shaped while applying heat to the wood 4 in the atmosphere (step S7). FIG. 9 is a diagram schematically showing an outline of the heat shaping step. In the heating shaping step, the wood 4 is sandwiched between the molds 51 and 52 which are a pair of heating shaping dies.

  In FIG. 9, the mold 51 located above the wood 4 includes a smooth surface-shaped recess 511 that abuts the surface of the wood 4 on which the wood 4 protrudes. On the other hand, the mold 52 located below the wood 4 in FIG. 9 includes a smooth surface-shaped convex portion 521 that abuts against the surface of the wood 4 on which the wood 4 is depressed. The convex portion 521 is provided with a prismatic opening convex portion 522. The opening convex portion 522 has a shape substantially equal to the opening shape of the opening 4d. The recess 511 is provided with a prismatic opening recess 512. The opening recess 512 has a shape substantially equal to the opening shape of the opening 4d.

  As shown in FIG. 10, the shape of the gap between the mold 51 and the mold 52 when the molds 51 and 52 are clamped and heat-shaped corresponds to the shape after the shaping of the wood 4. The shape after shaping is desirably a shape obtained by slightly deforming the shape of the wood 4 before the heating shaping step. Thus, by preventing the shape of the wood 4 from changing greatly before and after the heat shaping step, it is possible to prevent problems such as cracking when the wood 4 is shaped.

  Moreover, the shape of the opening convex part 522 and the opening recessed part 512 is a shape substantially the same as the opening shape of the opening part 4d, and is set as the shape of the opening part of a final product. Further, when forming the notch 42 or the like in the processing step, a convex part that fits into the notch 42 is formed on the mold 51 or 52 so that the shape of the notch 42 is not deformed by heat shaping. Is preferred.

  Heaters 53 and 54 that generate heat are attached to the molds 51 and 52, respectively. The heaters 53 and 54 are connected to a control device 55 having a temperature control function, generate heat under the control of the control device 55, and apply heat to the molds 51 and 52, respectively. The control device 55 controls the heaters 53 and 54 so that the temperatures of the molds 51 and 52 when sandwiching the wood 4 are substantially constant at about 150 to 200 ° C.

  In the heat shaping process, compression is performed so that the thickness of the wood 4 is slightly reduced without changing the shape of the wood 4. As a result, the surface hardness of the wood 4 after the heat shaping process is increased. In addition, the dimensional stability can be improved by heating the wood 4. By the heating shaping, the tapered opening 4d is shaped into a vertical wall perpendicular to the horizontal direction. Moreover, the strength in the vicinity of the opening 4d can be improved by heat shaping. The compressed wood product 7 shown in FIG. 11 is completed through the heat shaping process.

  FIG. 12 is a perspective view showing an external configuration of a digital camera to which the compressed wood product is applied as an exterior body, and is shown in combination with the compressed wood product 6 manufactured by the same method as the compressed wood product 7. FIG. 13 is a perspective view showing a configuration of an exterior material of a digital camera to which the compressed wood products 6 and 7 are applied as an exterior body.

  The digital camera 100 shown in FIGS. 12 and 13 includes a compressed wood product 6 that is a cover member that covers the front side, and a compressed wood product 7 that is a cover member that covers the back side. The main plate portion 6 a of the compressed wood product 6 is formed with a cylindrical opening 61 that exposes the imaging unit 101 and a rectangular parallelepiped opening 62 that exposes the flash 102. Further, a semi-cylindrical cutout 63 is formed in the side plate portion 6 b of the compressed wooden product 6. On the other hand, on the main plate portion 7a of the compressed wood product 7, a display portion (not shown) realized by using a liquid crystal display, a plasma display, an organic EL display or the like is displayed in order to display image information and character information. A rectangular parallelepiped opening 71 is formed. Further, the side plate portion 7b of the compressed wood product 7 is formed with a semi-cylindrical cutout 72 for exposing the shutter button 103 in combination with the cutout 63 of the compressed wood product 6.

  As with the compressed wood product 7, the compressed wood product 6 forms a blank material in the shaping process and forms openings for the openings 61 and 62, and is subjected to softening, compression, fixing, drying, processing, and heat shaping process. It can be formed by passing through.

  The compressed wood product according to the present embodiment can also be applied as an exterior body for electronic equipment other than a digital camera. The compressed wood product according to the present embodiment can also be applied to tableware, various cases, and the like.

  According to the embodiment of the present invention described above, the blank material is provided by providing the opening concave portion 112 and the opening convex portion 122 having substantially the same shape as the opening shape of the opening portion at appropriate positions of the pair of molds 11 and 12. When compressing 2, since it can be compressed while maintaining the opening shape of the opening 2 d, the opening can be formed easily and without causing deformation of the compressed wood.

  Moreover, according to this Embodiment, by performing a heating shaping process, the boundary of the opening part 71 is densified, surface hardness becomes high, and dimensional stability increases. Therefore, it is possible to prevent moisture from entering from the opening and to prevent deformation such as expansion and twisting of the wood due to moisture.

  In the present embodiment, a square pyramid-shaped opening convex part 122 whose upper part is cut off by the convex part 121 of the mold 12 which is a core mold, and an upper part is cut off by the concave part 111 of the mold 11 which is a cavity mold. As shown in FIG. 14, a rectangular columnar opening convex portion 122A is provided on a convex portion 121A of a mold 12A that is a core mold, and a cavity mold is used. It is also possible to provide a rectangular columnar opening concave portion 112A in a concave portion 111A of a certain mold 11A and perform the compression process using the molds 11A and 12A as a pair of molds. FIG. 14 is a cross-sectional view of the configuration of a mold used in the compression step of the compressed wood product manufacturing method according to Modification 1 of the embodiment of the present invention. In the first modification, when the compressed wood product is manufactured without performing the heat shaping step, it is not necessary to process the taper of the opening of the compressed wood product by performing the compression step using the molds 11A and 12A.

  Furthermore, as shown in FIG. 15, the convex part 121B of the mold 12B that is a core mold is provided with a quadrangular pyramid-shaped opening concave part 122B, and the concave part 111B of the mold 11B that is a cavity mold. It is also possible to provide a square pyramid-shaped opening convex part 112B with the upper part cut off and perform the compression process using the molds 11B and 12B as a pair of molds. FIG. 15 is a cross-sectional view of the configuration of a mold used in the compression step of the method for manufacturing a compressed wooden product according to Modification 2 of the embodiment of the present invention.

  FIG. 16 is a sectional view showing the configuration of a mold used in the compression step of the compressed wood product manufacturing method according to the third modified example of the embodiment of the present invention. The mold 12C is a core mold. The convex portion 121C has a height after compression of the blank 2 and is provided with a quadrangular pyramid-shaped opening convex portion 122C whose upper portion is cut off, and the concave portion 111C of the mold 11C, which is a cavity mold, has an opening. Neither a convex part nor an opening concave part is provided. It is also possible to perform the compression step using the molds 11C and 12C as a pair of molds. The opening protrusion 122C may be provided in the cavity mold 11C, and in that case, it is not necessary to provide the opening protrusion and the opening recess in the core mold 12C.

  FIG. 17 is a sectional view showing the configuration of a mold used in the compression step of the compressed wood product manufacturing method according to the modified example 4 of the embodiment of the present invention. The mold 12D is a core mold. The convex portion 121D is provided with a quadrangular pyramid-shaped opening convex portion 122D having a height that is half the thickness of the blank material 2 after compression, and a concave portion of the mold 11D that is a cavity mold. 111D is also provided with an opening protrusion 112D having the same shape as the opening protrusion 122D. It is also possible to perform the compression step using the molds 11D and 12D as a pair of molds. The height of the opening protrusion 122D may be less than the thickness of the blank member 2 after compression, and the height of the opening protrusion 122D + the height of the opening protrusion 112D ≦ the thickness of the blank member 2 after compression. If desired, it can be set arbitrarily.

  Furthermore, the opening convex portion may have a shape as shown in FIG. FIG. 18 is an enlarged cross-sectional view showing the configuration of the opening convex portion formed in the mold used in the compression step of the compressed wood product manufacturing method according to Modification 5 of the embodiment of the present invention. The opening convex part 123 is provided with a columnar part 123a rising from a mold and a tapered part 123b having a tapered shape. Since the opening convex part 123 is easy to fit the opening part 2d of the blank material 2 because the taper part 123b has a taper shape, and finally is compressed into the shape of the columnar part 123a, the heating shaping process is performed. Even if it is a case where a compressed wood product is manufactured, it is not necessary to process the taper of an opening part. The opening convex portion 123 may be formed in either the core mold or the cavity mold as long as it is formed at a predetermined position on the mold together with the opening concave portion having the same shape.

  The compressed wood product manufacturing method and molding apparatus according to the present embodiment have been described above, but the mold heating method in the heating shaping step is not limited to the above-described one. For example, the mold may be heated with a plate attached with a heater, or the mold may be heated using a heating furnace.

  In the present embodiment, the heat shaping step is an arbitrary step, and the compressed wood product may be manufactured without providing the heat shaping step. Further, after the wood is heated and shaped without performing the processing step, the processing step may be performed as a final finish. Further, the cutting may be performed after the heat shaping step without performing the cutting before the heat shaping step.

  Further, a notch or the like is formed in the side plate portion 2b or the like of the blank material 2 in the shaping process, and the notch recess and protrusion for notch are added to the mold used in the compression process in addition to the opening recess and the opening protrusion. May be formed to perform the compression step.

  As described above, the method and apparatus for manufacturing a compressed wood product according to the present invention are useful when compression-molding wood into a predetermined three-dimensional shape having an opening, and in particular, exteriors for electronic devices such as digital cameras. Suitable for compression molding of wood applied as a material.

DESCRIPTION OF SYMBOLS 1 Raw wood 2, Blank material 3, 4 Wood 6, 7 Compressed wood product 2a, 3a, 4a, 6a, 7a Main board part 2b, 2c, 3b, 3c, 4b, 4c, 6b, 6c, 7b, 7c Side board part 11, 12 51, 52, 11A, 12A, 11B, 12B, 11C, 12C, 11D, 12D Mold 2d, 3d, 4d, 61, 71 Opening 53, 54 Heater 55 Controller 100 Digital camera 101 Imaging unit 102 Flash 103 Shutter Button 111, 511 Concave part 121, 521 Convex part 112, 112A, 122B, 512 Opening concave part 122, 122A, 112B, 122C, 112D, 122D, 123 Opening convex part G Wood

Claims (5)

A compressed wood product manufacturing method for manufacturing a compressed wood product having a three-dimensional shape having an opening by compressing wood,
A blank material having a substantially bowl shape is formed from the raw wood, and a shaping process for forming the opening,
A compression step of compressing the blank material while sandwiching a blank material having a predetermined shape including the opening portion by a pair of molds provided with an opening convex portion at least one of which can be fitted to the opening portion;
A method for producing a compressed wood product, comprising:   Shaping the compressed wood after compression into a shape substantially similar to the compressed wood while being heated and sandwiched by a pair of molds provided with an opening convex portion that can be fitted to the opening after compression. It has a process, The manufacturing method of the compression wooden product of Claim 1 characterized by the above-mentioned.   The said compression process compresses the said blank material so that opening area becomes larger than the opening part of the said blank material, The manufacturing method of the compressed wood product of Claim 1 or 2 characterized by the above-mentioned. A molding apparatus for producing a compressed wooden product having a three-dimensional shape having an opening by compressing a substantially bowl-shaped blank material to be processed,
A first mold and a second mold that sandwich the blank material in pairs;
At least one of the first mold and the second mold has an opening convex portion whose opening shape is substantially equal to the opening portion and whose side surface is tapered, and an upper surface area of the opening convex portion. Is smaller than the opening area formed in the blank material, and the lower surface area of the convex portion is larger than the opening area formed in the blank material.   The molding apparatus according to claim 4, wherein the opening convex portion includes a columnar portion rising from the first mold and / or the second mold, and a tapered portion having a tapered shape.

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