JP4674169B2 - Compressed wood product manufacturing method - Google Patents

Description

  The present invention relates to a compressed wood product manufacturing method for manufacturing a compressed wood product including compressed wood.

  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 is attracting attention as a material that can produce unique and tasty products that are not found in products using synthetic resins (plastics) and light metals, and its processing technology is also making significant progress. .

  Conventionally, as a processing technique of 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 is known a technique of forming a predetermined three-dimensional shape while performing the process (for example, see Patent Document 1). There is also known a technique in which a piece of wood compressed in a softened state is temporarily fixed, and this wood is put into a mold and recovered to mold (for example, see Patent Document 2). In these techniques, the thickness and compression rate of wood are determined in consideration of various points including individual differences and types of wood, strength of wood after processing, and its use.

Japanese Patent No. 3078452 JP-A-11-77619

  By the way, depending on the shape of the compressed wood, the strength required for the wood may not be sufficiently secured. In this case, in order to increase the strength of the wood, a reinforcing member made of a material containing metal or synthetic resin is often fixed to the wood by a fastening method such as screwing or caulking. In such a fastening method, it is necessary to provide bosses and ribs for inserting screws and caulks into the wood, but the bosses and ribs protrude from the surface of the wood and are compression-molded like other parts. Was technically difficult.

  This invention is made in view of the above, Comprising: It is providing the manufacturing method of the compression wooden product which can attach easily the reinforcement member which reinforces the timber to compress-mold with respect to the timber.

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 formed by compressing wood using a pair of molds, A reinforcing member attached to the wood to reinforce the wood, and a gap formed between the reinforcing member, the wood, and one of the pair of molds is substantially parallel to the fiber direction of the wood. It is disposed between the wood and one of the pair of molds so as to have a direction, and the compression force is applied by sandwiching the wood and the reinforcing member using the pair of molds. To do.

In the method for manufacturing a compressed wood product according to the present invention, in the above invention, the wood has a main plate portion having a flat plate shape, the reinforcing member has a rod shape, and is substantially parallel to the fiber direction of the wood on the surface of the main plate portion. The mold that is disposed in the abutment and that abuts against the reinforcing member during compression of the pair of molds has a groove part into which at least a part of the reinforcing member can be inserted, and the main plate part and the reinforcing member are compressed by compression. The component of the wood is caused to flow in at least a part of a gap formed between the groove portion and the groove portion.

In the method of manufacturing a compressed wood product according to the present invention, in the above invention, the wood is formed in a dish shape having a closed end surface that circulates and the reinforcing member has an end surface that is substantially the same shape as the end surface and contacts the end surface. The contact portion has a contact surface that contacts the inner surface in the vicinity of the end surface, and is penetrated in the thickness direction from the contact surface of the contact surface substantially parallel to the fiber direction of the wood, and is in the longitudinal direction. A side contact portion having an opening formed so as to be substantially parallel to the fiber direction of the wood, and the component of the wood is applied to at least a part of the opening which is the gap by compression. It is made to flow.

In the method of manufacturing a compressed wood product according to the present invention, in the above invention, the wood is formed in a dish shape having a closed end surface that circulates and the reinforcing member has an end surface that is substantially the same shape as the end surface and contacts the end surface. Outer surface of an abutting surface that is substantially parallel to the fiber direction of the wood among the abutting portion, a side abutting portion that abuts on an inner surface near the end surface, and a contact surface of the side surface abutting portion with the wood A protrusion formed in a direction and projecting in a direction substantially orthogonal to the contact surface, and is a recess that is the gap by compression, the end surface contact portion, the side surface contact portion, And the component of the said wood is made to flow into at least one part of the recessed part enclosed by the said projection part.

The method for manufacturing a compressed wood product according to the present invention is characterized in that, in the above invention, the reinforcing member is made of a material containing at least one of metal and synthetic resin.

  According to the compressed wood product manufacturing method of the present invention, when a compressed wood product is manufactured by compressing wood using a pair of molds, the reinforcing member attached to the wood to reinforce the wood is One of the wood and the pair of molds such that a gap formed between the member, the wood and one of the pair of molds has a longitudinal direction substantially parallel to the fiber direction of the wood. And forming the wood by sandwiching the wood and the reinforcing member using the pair of molds and applying a compressive force, and at least part of the gap is a component of the wood Thus, it becomes possible to easily attach the reinforcing member for reinforcing the wood to be filled and compression-molded to the wood.

  The best mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be described below with reference to the accompanying drawings.

(Embodiment 1)
In the method for manufacturing a compressed wood product according to Embodiment 1 of the present invention, first, wood having a predetermined shape is formed from the raw wood (a shaping step). FIG. 1 is a diagram schematically showing an outline of this shaping process. A wood 1 shown in the figure is formed by cutting or the like from an uncompressed solid wood 10 (having a grain G) that is a raw wood, and has a flat main plate portion 1a having a substantially rectangular surface, and the main plate portion. Two side plate portions 1b extending from each of two sides substantially parallel to the longitudinal direction of the surface 1a at a predetermined angle with respect to the surface of the main plate portion 1a, and 2 substantially parallel to the short direction of the surface of the main plate portion 1a And two side plate portions 1c extending from each of the sides at a predetermined angle with respect to the surface of the main plate portion 1a. The wood 1 has a dish shape (including a bowl shape, a shell shape, a box shape, and the like), and has a volume that is preliminarily added with a volume reduced by a compression process described later.

  In the case shown in FIG. 1, the shaping is performed so that the longitudinal direction of the wood 1 formed from the solid material 10 and the fiber direction L of the wood 1 are substantially parallel and the surface of the main plate portion 1a forms a grid surface. But this is just an example. In addition, the longitudinal direction of the wood 1 can be shaped so that the longitudinal direction of the wood 1 is substantially parallel to the fiber direction L of the wood 1 and the surface of the main plate portion 1a forms a plate surface and a tracking surface. For this reason, in the drawings referred to in the following description, the description is omitted. In addition, the solid wood 10 is most suitable for the use of processed wood from cypress, hiba, paulownia, cedar, pine, cherry, bamboo, ebony, rosewood, bamboo, teak, mahogany, rosewood, etc. Should be selected. In addition, when taking wood from raw wood, it may be shaped like a flat plate.

  Next, the shaped wood 1 is compression-molded (compression process). FIG. 2 is a diagram showing a configuration of a mold used in this compression step and a state before the wood 1 is compressed. In the compression step shown in the figure, the wood 1 and the reinforcing member 2 are sandwiched between a pair of molds 51 and 61, and a predetermined compression force is applied.

  The reinforcing member 2 is realized by a material that is significantly harder than the wood 1, and includes at least one of metal (aluminum, stainless steel, titanium, iron, etc.) and synthetic resin (super engineering plastic typified by polyimide, etc.). Made of material. When the reinforcing member 2 is made of metal, it is cast using, for example, a mold. On the other hand, when the reinforcing member 2 is made of synthetic resin, it is injection-molded using a mold. Although FIG. 2 shows a case where the cross-sectional shape of the reinforcing member 2 is a circle, the cross-sectional shape of the reinforcing member 2 may be a polygon other than a circle as long as the reinforcing member 2 has a rod shape.

  Next, the configuration of the mold will be described. A mold 51 for applying a compressive force from above the wood 1 during compression includes a convex portion 52 having a shape that rises from the main plate portion 1a of the wood 1 to the side plate portions 1b and 1c and fits to the curved inner surface. This is a core mold provided with a groove portion 53 formed on the bottom surface of the convex portion 52 so as to form a semi-cylindrical shape along the longitudinal direction of the convex portion 52 (direction perpendicular to the paper surface in FIG. 2). The diameter R of the groove 53 is larger than the diameter r of the reinforcing member 2 (R> r), and the length of the groove 53 in the longitudinal direction is equal to the length of the reinforcing member 2 in the longitudinal direction. Further, of the inner surface of the wood 1, the curvature radius of the curved curved surface 1ab that rises from the main plate portion 1a to the side plate portion 1b and is curved is RI, and the curvature radius of the curved surface that is in contact with the curved surface 1ab of the convex portion 52 is RA. Then, these two radii of curvature satisfy the relationship RI> RA.

  On the other hand, the mold 61 for applying a compressive force from below the wood 1 during compression includes a concave portion 62 for fitting the curved outer surface rising from the main plate portion 1a of the wood 1 to the side plate portions 1b and 1c. Cavity mold. If the curvature radius of the curved curved surface 1ab outer surface rising from the main plate portion 1a of the wood 1 to the side plate portion 1b is RO and the curved curvature radius of the concave portion 62 contacting the outer surface of the curved surface 1ab is RB, these two The radius of curvature satisfies the relationship RO> RB.

  Before compressing the wood 1 using the molds 51 and 61 having the above-described configuration, the wood 1 is left in a steam atmosphere at a higher temperature and pressure than the atmosphere for a predetermined time, so that moisture is excessively absorbed and softened. . The high temperature and high pressure here means a temperature of 100 to 230 ° C., more preferably 180 to 230 ° C., still more preferably about 180 to 200 ° C., and a pressure of 0.1 to 3.0 MPa (megapascal), more preferably. Indicates a state of about 0.45 to 2.5 MPa, more preferably about 1.0 to 1.6 MPa. Instead of leaving the wood 1 to be softened in the water vapor atmosphere described above, for example, the wood 1 may be heated and softened by high-frequency electromagnetic waves such as microwaves.

  Thereafter, the wood 1 is sandwiched by moving at least one of the molds 51 and 61 relative to the other, and the wood 1 is gradually deformed into a predetermined shape by applying a compressive force. At this time, for example, the compression force applied to the wood 1 is adjusted by electrically moving the molds 51 and / or 61 using an appropriate driving means. Note that the mold 51 and the mold 61 may be coupled with a screw, and the mold 51 may be moved up and down with respect to the mold 61 by manually or automatically tightening the screw.

  In FIG. 3, the softened wood 1 is placed at a predetermined position, and the reinforcing member 2 is mounted on the groove 53 of the die 51 on the inner surface of the wood 1, and then between the die 51 and the die 61. It is a figure which shows the state which has clamped the timber 1 and is applying the compression force, and is a figure which shows the state which the deformation | transformation of the timber 1 was substantially completed. As shown in FIG. 3, the wood 1 is deformed into a three-dimensional shape corresponding to a gap between the mold 51 and the mold 61 by receiving a compressive force from the molds 51 and 61.

  When the wood 1 is deformed, a part of the wood 1 compressed in the gap formed between the main plate portion 1a of the wood 1 and the reinforcing member 2 and the groove portion 53 of the mold 51 is schematically shown on the paper surface of FIG. It flows in such a direction as to follow, and fills the gap between the groove 53 and the reinforcing member 2 so as to surround substantially the entire circumference of the reinforcing member 2. This is because the longitudinal direction of the groove 53 and the longitudinal direction of the reinforcing member 2 are both coincident with each other, and the longitudinal direction is substantially parallel to the fiber direction L of the wood.

  In general, when there is a minute gap between the wood and the mold during compression, the components of the wood flow along the minute gap in a direction substantially perpendicular to the fiber direction of the wood, but along the fiber direction of the wood. It does not flow in the direction. In the first embodiment, a minute gap generated between the groove 53 of the mold 51 and the reinforcing member 2 is formed along the fiber direction L of the wood 1, and the wood 1 is substantially orthogonal to the fiber direction L. When the components of the wood 1 flow in the direction (various directions in the cross section substantially parallel to the cross section shown in FIG. 3), the gap formed by the main plate portion 1a, the reinforcing member 2, and the groove portion 53 is filled.

  3, after applying a compressive force to the wood 1 for a predetermined time (1 to several tens of minutes, more preferably about 5 to 10 minutes), the wood 1 is dried by releasing the water vapor atmosphere, The compression process is completed by separating the mold 61 and releasing the compression. As a result of this compression step, the thickness of the wood 1 is about 30 to 50% of the thickness of the wood 1 before compression. In addition, as a result of filling the gap formed by the main plate portion 1a, the reinforcing member 2, and the groove portion 53, the components of the wood 1 rotate up to the upper side of the reinforcing member 2 (excluding the upper end portion) as seen in FIG. Then, the reinforcing member 2 is fixed to the wood 1 and both are integrated. An appropriate adhesive may be applied to the contact surface between the wood 1 and the reinforcing member 2 before the compression step.

  In addition, when performing the compression process mentioned above, the reinforcement member 2 may be mounted in the predetermined position of the inner surface of the timber 1, and you may make it attach the reinforcement member 2 to the groove part 53 previously. In the latter case, the reinforcing member 2 and the groove portion 53 may be bonded to such an extent that they can be separated from each other after compression, or a minute unevenness or the like is provided at a contact portion between the groove portion 53 and the reinforcing member 2. For example, the groove 53 and the reinforcing member 2 may be attached to such an extent that they can be removed after compression.

  FIG. 4 is a perspective view showing the configuration of the compressed wood product formed by the compressed wood product manufacturing method according to the first embodiment. The compressed wood product 3 shown in the figure is formed by embedding two reinforcing members 2 on the inner surface of the main plate portion 1a of the compressed wood 1. In the case shown in FIG. 4, the vicinity of the upper end of the reinforcing member 2 is exposed on the surface, but depending on the relationship between the diameter r of the reinforcing member 2 and the diameter R of the groove 53, the type of the wood 1 and the way of shaping, the reinforcement The wood 1 may surround the member 2 and be completely embedded in the wood 1. 4 is substantially the same shape as the drawing excluding the molds 51 and 61 in FIG.

  The compressed wooden product 3 has high strength even if it is thin, and the shape thereof is not deformed by drying of the wood or the like. In addition, the main plate portion 1a is reinforced by the reinforcing member 2, which is suitable as an industrial product. The diameter, the number of materials used, the material, and the like of the reinforcing member 2 can be changed according to various conditions such as the size of the compressed wooden product 3 and the type of wood.

  According to the method for manufacturing a compressed wood product according to the first embodiment of the present invention described above, when the compressed wood product is manufactured by compressing the wood using a pair of molds, the wood is used to reinforce the wood. A reinforcing member attached to the wood and the wood so that a gap formed between the reinforcing member, the wood and one of the pair of molds has a longitudinal direction substantially parallel to a fiber direction of the wood. By placing the wood and the reinforcing member using the pair of molds and applying a compressive force between the pair of molds, the wood is molded and the gap Reinforcing members that are at least partially filled with the wood components and that reinforce the wood to be compression-molded can be easily attached to the wood without using fastening methods such as screws or caulking. It made.

  Further, according to the first embodiment, the rod-shaped reinforcing member is disposed on the flat plate-shaped main plate portion of the dish-shaped timber so as to be substantially parallel to the fiber direction of the timber, and is applied to the reinforcing member during compression. By providing a groove on the bottom surface of the abutting mold, the wood and the reinforcing member are integrated by allowing the wood to flow in at least a part of a gap formed between the main plate portion of the wood, the reinforcing member, and the groove. Thus, the reinforcing member having a rod shape can be embedded in the main plate portion of the wood in an undercut shape without passing through a special process.

(Embodiment 2)
FIG. 5 is a perspective view showing a configuration of a reinforcing member that is attached to wood in order to reinforce the wood in the method for manufacturing a compressed wood product according to Embodiment 2 of the present invention. 6 is a cross-sectional view taken along line BB in FIG. 5, and FIG. 7 is a cross-sectional view taken along line CC in FIG. The reinforcing member 4 shown in these drawings has a closed shape that circulates in a substantially rectangular shape, an end surface abutting portion 41 that abuts the end surface of the wood that forms a dish shape by compression, and the vicinity of the end surface of the wood by compression And a side surface abutting portion 42 that abuts on the inner side surface. In the longitudinal direction of the side surface contact portion 42, a plurality of openings 43 (three in one case in the longitudinal direction in the case of FIG. 5) are formed along the longitudinal direction. The opening portion 43 has a rectangular opening surface whose longitudinal direction is a direction parallel to the longitudinal direction of the side contact portion 42. On the other hand, no opening is formed in the lateral direction of the side contact portion 42 (see FIG. 7).

  Similar to the reinforcing member 2 in the first embodiment, the reinforcing member 4 is realized by a material that is significantly harder than wood, and is represented by a metal (aluminum, stainless steel, titanium, iron, etc.) and a synthetic resin (represented by polyimide). It is made of a material including at least one of super engineering plastics).

  In the method for manufacturing a compressed wood product according to the second embodiment, after shaping the wood in the same manner as in the first embodiment, compression is performed while attaching the reinforcing member 4 to the end surface of the wood by using a pair of molds. To do. FIG. 8 is a cross-sectional view showing an outline of a compression process that also serves to attach the reinforcing member 4 to the wood. The cross-sectional shape of the timber 5 shown in FIG. 8 is slightly different from the cross-sectional shape of the timber 1 shown in FIG. 2, but the timber 5 has a dish shape like the timber 1 and includes the main plate 1a and the side plate. It is assumed that a main plate portion 5a and side plate portions 5b and 5c respectively corresponding to 1b and 1c are provided. In this sense, the external shape of the wood 5 taken from the solid material 10 is substantially the same as the external shape of the wood 1 shown in FIG. Further, the fiber direction of the wood 5 is oriented in the direction perpendicular to the paper surface in FIG. 8 (coincidence with the longitudinal direction of the side surface abutting portion 42 of the reinforcing member 4).

  Here, the configuration of the mold will be described. The die 81 for applying a compressive force from above the reinforcing member 4 and the wood 5 has a shape that rises from the main plate portion 5a of the wood 5 to the side plate portion 5b (and 5c (not shown)) and fits to the curved inner surface. A core mold having a convex portion 82 and a pressing surface 83 that presses the upper surface of the reinforcing member 4 in a plane perpendicular to the protruding direction of the convex portion 82 (vertical direction in FIG. 8) at the periphery of the convex portion 82. It is.

  On the other hand, a die 91 for applying a compressive force from below the wood 5 includes a concave portion 92 for fitting the curved outer surface rising from the main plate portion 5a of the wood 5 to the side plate portion 5b (and 5c), and the die. This is a cavity mold provided with an upper end surface 93 that abuts against the pressing surface 83 of 91.

  When the wood 5 is compressed by the molds 81 and 91 having the above-described configuration, after the wood 5 is softened in the water vapor atmosphere similar to the first embodiment, the reinforcing member 4 and the wood 5 are fixed to each other. The reinforcing member 4 and the wood 5 are sandwiched between the reinforcing member 4 and the wood 5 by applying the predetermined compressive force by placing the die in the position close to the other die. In the second embodiment, since the reinforcing member 4 has a closed frame shape that circulates, the inner periphery of the reinforcing member 4 may be fitted to the outer periphery of the mold 81 and attached to the mold 81. The driving of the molds 81 and / or 91 may be performed in the same manner as the driving of the molds 51 and / or 61 described in the first embodiment.

  Even after the pressing surface 83 of the die 81 reaches a position where the pressing surface 83 comes into contact with the upper end surface of the reinforcing member 4, when the die 81 and the die 91 are brought closer to each other, the wood 5 is formed with the reinforcing member 4 as a part of the die. It gradually transforms. At the time of this deformation, the side plate portion 5b rises gradually with increasing angle with respect to the main plate portion 5a.

  Eventually, when the side plate portion 5b starts to come into contact with the side surface contact portion 42, a part of the wood component of the side plate portion 5b flows in a direction substantially perpendicular to the fiber direction of the wood 5 and enters the inside of the opening 43. Go. In that case, since the component of the wood 5 flows in a direction substantially along the paper surface of FIG. 8, if the longitudinal direction of the opening 43 is formed so as to be substantially parallel to the fiber direction of the wood 5, more Many components of the wood 5 can fill the inside of the opening 43, and the wood 5 and the reinforcing member 4 can be more firmly fixed.

  Thereafter, when the mold 81 and the mold 91 are further brought closer to each other until the pressing surface 83 of the mold 81 contacts the upper end surface 93 of the mold 91 by compression molding, the end surface contact portion 41 of the reinforcing member 4 becomes the wood 5. It contacts the end surface 5d. FIG. 9 is a diagram illustrating a state in which the lowering of the mold 81 is completed, and is a diagram illustrating a state in which the reinforcing member 4 is completely integrated with the wood 5 and receives a compressive force.

  In the state shown in FIG. 9, after applying a compressive force to the wood 5 for a predetermined time (1 to several tens of minutes, more preferably about 5 to 10 minutes), the water vapor atmosphere is released and the wood 5 is dried. The compression process is completed by separating the mold 91 and releasing the compression. As a result of this compression step, the thickness of the wood 5 is about 30 to 50% of the thickness of the wood 5 before compression. Further, as a result of the inside of the opening 43 corresponding to the gap formed by the wood 5, the reinforcing member 4, and the mold 81 being filled with the components of the wood 5 by this compression process, the reinforcing member 4 is fixed to the wood 5. And integrate. Note that an appropriate adhesive may be applied to the inside of the opening 43 before the compression step.

  FIG. 10 is a perspective view showing a configuration of a compressed wooden product formed by the method for manufacturing a compressed wooden product according to the second embodiment. In the compressed wood product 6 shown in the figure, the end surface contact portion 41 of the reinforcing member 4 contacts the end surface 5d of the wood 5, and the side surface contact portion 42 of the reinforcing member 4 extends in the thickness direction of the side plate portion 5b of the wood 5. A part of the wood component of the side plate portion 5b enters into the opening 43 of the side contact portion 42 to fill the inside, and the wood 5 and the reinforcing member 4 are integrated. Yes. Thereby, especially the end surface of the timber 5 is reinforced.

  The cross section along the line D-D in FIG. 10 is substantially the same as that in FIG. 9 except for the molds 81 and 91. In the case shown in FIG. 9, the opening 43 is filled with the components of the wood 5, but the inside of the opening 43 does not have to be filled completely, and is filled to the extent that the reinforcing member 4 does not come out of the wood 5. It only has to be. Of course, the number of openings 43 is also changed according to the shape of the compressed wood product and the material of the reinforcing member 4 and the wood 5.

  According to the method for manufacturing a compressed wood product according to the second embodiment of the present invention described above, when the compressed wood product is manufactured by compressing the wood using a pair of molds, the wood is used to reinforce the wood. A reinforcing member attached to the wood and the wood so that a gap formed between the reinforcing member, the wood and one of the pair of molds has a longitudinal direction substantially parallel to a fiber direction of the wood. By placing the wood and the reinforcing member using the pair of molds and applying a compressive force between the pair of molds, the wood is molded and the gap Reinforcing members that are at least partially filled with the wood components and that reinforce the wood to be compression-molded can be easily attached to the wood without using fastening methods such as screws or caulking. It made.

  Further, according to the second embodiment, the end surface abutting portion that is substantially the same shape as the end surface of the timber having the end surface that is turned around and is in the shape of a dish, and the inner surface in the vicinity of the end surface The contact surface is in contact with the side surface, and the contact surface is penetrated in the thickness direction from the contact surface substantially parallel to the fiber direction of the wood so that the longitudinal direction is substantially parallel to the fiber direction of the wood. Specially by integrating the wood and the reinforcing member by using a reinforcing member provided with a side contact portion having the formed opening and causing the components of the wood to flow into at least a part of the opening by compression. The reinforcing member can be attached to the wood in the compression process without going through a simple process, and the vicinity of the end face of the wood can be reinforced.

  In addition, the shape of the reinforcing member integrated by the movement of the wood components is not limited to the above-described one. FIG. 11 is a perspective view showing a configuration of a compressed wood product formed using a reinforcing member having a configuration different from that of the reinforcing member 4 described above. 12 is a partial cross-sectional view taken along the line EE of FIG. A compressed wood product 8 shown in these drawings is obtained by mounting a reinforcing member 7 having a configuration different from that of the reinforcing member 4 on the wood 5. The compression process that also serves to attach the reinforcing member 7 to the wood 5 is the same as the compression process described in the second embodiment.

  The reinforcing member 7 includes an end surface contact portion 71 that contacts the end surface 5d of the wood 5, a side surface contact portion 72 that contacts the inner surface in the vicinity of the end surface 5d, and a contact surface of the side surface contact portion 72 with the wood 5. And a protrusion 73 that is formed on a contact surface substantially parallel to the fiber direction of the wood 5 and protrudes in a uniform square shape in the outer peripheral direction substantially orthogonal to the contact surface. Note that the cross section of the reinforcing member 7 including the side contact portion 72 in the short direction and orthogonal to the line EE in FIG. 11 is the same as the cross section of the reinforcing member 4 shown in FIG.

  The reinforcing member 7 having the above configuration may be attached to the wood 5 when the wood 5 is compressed using the molds 81 and 91 as in the second embodiment. In this case, the component of the wood 5 is in the gap formed between the reinforcing member 7, the wood 5, and the mold 91, more specifically, the component in the vicinity of the end surface 5 d of the wood 5 is in contact with the end surface. The concave portion (which forms at least a part of the gap) surrounded by the portion 71, the side contact portion 72, and the protrusion 73 flows around and fills the concave portion. As a result, an undercut portion is formed in the compressed wood 5 and is surely integrated with the reinforcing member 7, so that the protrusion 73 functions to prevent the wood 5 from coming off. Therefore, even when the reinforcing member 7 is attached to the wood 5 and integrated, the same effect as when the reinforcing member 4 is used can be obtained.

  Note that the shape of the protrusion 73 is not limited to a square shape. For example, the protrusion 73 may protrude so that the cross section of the protrusion 73 has a taper shape or an inverse taper shape, or may protrude in a semicircular or polygonal shape.

(Other embodiments)
Up to this point, the first and second embodiments have been described in detail as the best mode for carrying out the present invention, but the present invention should not be limited only by these two embodiments. For example, the end portion of the reinforcing member 2 applied in Embodiment 1 is extended obliquely upward from the main plate portion 1a of the wood 1 along the side plate portion 1c, and the end portion of the extended portion is extended to the reinforcing member 4. A new reinforcing member may be formed by connecting to the side surface abutting portion 42 (or the side surface abutting portion 72 of the reinforcing member 7), and may be attached to the wood by performing the same compression step as described above. If such a reinforcing member is used, it is possible to reinforce both the main plate 1a and the end surface of the wood 1 by performing the compression process once.

  Further, the groove portion formed in the mold 51 in the first embodiment may be formed at a position corresponding to the main plate portion 1 a of the wood 1 instead of the mold 51. In this case, since the thickness of a part of the wood 1 is small by the depth of the groove portion, the strength of the formed compressed wood product may be slightly inferior to that of the first embodiment, but the wood 1 may be used during the compression process. Positioning can be easily performed by dropping the reinforcing member 2 into the groove portion. In this case, there is also an advantage that the entire surface of the formed compressed wood product can be flattened.

  Thus, the present invention can include various embodiments and the like not described herein, and various design changes and the like can be made without departing from the technical idea specified by the claims. It is possible to apply.

  Compressed wood products manufactured by the compressed wood product manufacturing method according to the present invention include digital communication devices such as digital cameras, mobile phones, PHS or PDAs, portable audio devices, IC recorders, portable televisions, portable radios, It is suitable as an exterior material for small portable electronic devices such as a remote control for home appliances and digital video. Moreover, the compressed wood product manufactured by the compressed wood product manufacturing method according to the present invention can also be applied to eyeglass cases, tableware, and the like.

It is a figure which shows the outline | summary of the shaping process in the manufacturing method of the compression wooden product which concerns on Embodiment 1 of this invention. It is a figure which shows the outline | summary of the compression process in the manufacturing method of the compressed wood product which concerns on Embodiment 1 of this invention. It is a figure which shows the state (state in which the deformation | transformation of the timber was almost completed) which is applying the compression force to the timber at the compression process of the manufacturing method of the compressed wood product which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of the compression wood product formed by the manufacturing method of the compression wood product which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of the reinforcement member applied to the manufacturing method of the compression wooden product which concerns on Embodiment 2 of this invention. FIG. 6 is a sectional view taken along line B-B in FIG. 5. It is CC sectional view taken on the line of FIG. It is a figure which shows the outline | summary of the compression process of the manufacturing method of the compression wooden product which concerns on Embodiment 2 of this invention. It is a figure which shows the state (state in which the deformation | transformation of the timber was almost completed) which is applying the compression force to the timber at the compression process of the manufacturing method of the compressed wood product which concerns on Embodiment 2 of this invention. It is a perspective view which shows the structure of the compressed wood product formed by the manufacturing method of the compressed wood product which concerns on Embodiment 2 of this invention. It is a perspective view which shows the structure of the compression wood product formed using the reinforcement member different from FIG. 5 with the manufacturing method of the compression wood product which concerns on Embodiment 2 of this invention. It is the EE sectional view taken on the line of FIG.

Explanation of symbols

1, 5 Wood 1a, 5a Main plate portion 1b, 1c, 5b, 5c Side plate portion 1ab Curved surface 2, 4, 7 Reinforcement member 3, 6, 8 Compressed wood product 5d End surface 10 Solid material 41, 71 End surface contact portion 42, 72 Side surface Contact part 43 Opening part 51, 61, 81, 91 Mold 52, 82 Protrusion part 53 Groove part 62, 92 Concave part 73 Protrusion part 83 Pressing surface 93 Upper end surface G Wood grain L Fiber direction

Claims (4)

A method for producing a compressed wooden product formed by compressing wood using a pair of molds,
A reinforcing member attached to the wood to reinforce the wood, and a gap formed between the reinforcing member, the wood, and one of the pair of molds is substantially parallel to the fiber direction of the wood. Arranged between the wood and one of the pair of molds to have a direction,
And a step of Ru applying a compressive force to clamp said timber and said reinforcing member with the pair of molds,
The wood has a main plate portion having a flat plate shape,
The reinforcing member has a rod shape, and is disposed substantially parallel to the fiber direction of the wood on the surface of the main plate portion,
Of the pair of molds, the mold that comes into contact with the reinforcing member at the time of compression has a groove part into which at least a part of the reinforcing member can be inserted,
A method for producing a compressed wood product, characterized in that a component of the wood is caused to flow in at least a part of a gap formed between the main plate portion, the reinforcing member, and the groove portion by compression. A method for producing a compressed wooden product formed by compressing wood using a pair of molds,
A reinforcing member attached to the wood to reinforce the wood, and a gap formed between the reinforcing member, the wood, and one of the pair of molds is substantially parallel to the fiber direction of the wood. Arranged between the wood and one of the pair of molds to have a direction,
Using the pair of molds to sandwich the wood and the reinforcing member and applying a compressive force;
The wood has a dish shape with a closed end face that circulates,
The reinforcing member has an end surface abutting portion that is substantially the same shape as the end surface and abuts on the end surface, and an abutting surface that abuts on an inner surface in the vicinity of the end surface. A side contact portion that has an opening formed so that the longitudinal direction is substantially parallel to the fiber direction of the wood, and is penetrated in the thickness direction from the contact surface substantially parallel to the fiber direction,
A method for producing a compressed wood product, characterized in that a component of the wood is caused to flow through at least a part of the opening which is the gap by compression. A method for producing a compressed wooden product formed by compressing wood using a pair of molds,
A reinforcing member attached to the wood to reinforce the wood, and a gap formed between the reinforcing member, the wood, and one of the pair of molds is substantially parallel to the fiber direction of the wood. Arranged between the wood and one of the pair of molds to have a direction,
Using the pair of molds to sandwich the wood and the reinforcing member and applying a compressive force;
The wood has a dish shape with a closed end face that circulates,
The reinforcing member includes an end surface abutting portion that is substantially the same shape as the end surface and abuts on the end surface, a side surface abutting portion that abuts on an inner surface near the end surface, and the wood of the side surface abutting portion. A protrusion formed along the outer circumferential direction of the contact surface substantially parallel to the fiber direction of the wood among the contact surfaces, and protruding in a direction substantially orthogonal to the contact surface;
The wood component is caused to flow in at least a part of the concave portion that is the gap by compression and is surrounded by the end surface contact portion, the side surface contact portion, and the projection portion. A method for manufacturing compressed wood products. The said reinforcement member consists of a raw material containing at least any one of a metal and a synthetic resin, The manufacturing method of the compressed wood product as described in any one of Claims 1-3 characterized by the above-mentioned.

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