JP4429965B2 - Processing equipment - Google Patents

Description

  The present invention relates to a processing apparatus that compresses and processes 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 is 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 processing technology is also making dramatic progress.

  Conventionally, as a processing technique for such wood, after compressing a piece of water softened and softened, and cutting 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).

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

  However, in the above-described conventional wood processing technology, when the wood grain is preferentially shaped so that the wood surface forms a desired grain, the shape may deviate greatly from the shape of the formwork. In such a case, the shape of the shaped wood had to be greatly deformed, and the wood was easily cracked during compression. That is, when the shape change of wood due to compression is large, it has been difficult to form the wood without causing cracks.

  The present invention has been made in view of the above, and provides a processing apparatus capable of forming a wood without causing cracks even when the shape change before and after compression of the wood is large. With the goal.

In order to solve the above-described problems and achieve the object, a processing apparatus according to the present invention is a processing apparatus that processes the wood into a predetermined three-dimensional shape by compressing the target wood. A first mold frame having a portion that is movable in a direction and deformed by an external force; a guide frame that guides a direction in which the first mold frame should move; and the first mold frame. A second metal mold that clamps the wood and applies a compressive force, and the first mold abuts against the surface of the wood when compressing the wood, and the surface of the abutting surface A projecting portion that applies a compressive force while gradually expanding the region from the central portion to the peripheral portion of the surface, abuts against the end surface of the wood when compressing the wood, and substantially orthogonal to the thickness direction of the abutting end surface includes an end surface pressing portion to apply a compressive force in the direction of the said projections and the Surface pressing portion is characterized by comprising a material having one property at least one of viscosity and elasticity.

The processing apparatus according to the present invention is a processing apparatus that processes the wood into a predetermined three-dimensional shape by compressing the wood to be processed, and is a portion that is movable in a predetermined direction and is deformed by an external force. A metal mold that sandwiches the wood between the first mold frame and applies a compressive force between the first mold frame and a guide frame that guides a direction in which the first mold frame should move. A second mold frame, and the first mold frame projects in a predetermined outer peripheral direction of the main body portion of the first mold frame so that the wood is compressed when the wood is compressed. It is a metal mold | die provided with two or more end surface press parts which contact | abut to this end surface and apply a compressive force in the direction substantially orthogonal to the thickness direction of this end surface to contact | abut .

In the processing device according to the present invention, in the above invention, the end surface pressing portion is urged in the outer circumferential direction by an elastic member provided between the end surface pressing portion and the main body portion of the first formwork. It is characterized by being made .

In the processing device according to the present invention, in the above invention, the guide frame has a guide portion formed by penetrating a main body portion of the guide frame in a substantially frustum shape, and an end portion of the guide portion The opening surface with the smaller area among the opening surfaces formed in the above has the same shape as the opening surface of the second formwork .

Further, in the processing apparatus according to the present invention, in the above invention, the guide frame can be inserted into the first formwork from an opening surface having a larger area among opening surfaces formed at an end of the guide portion. It is characterized by being.

The processing apparatus according to the present invention is characterized in that, in the above invention, the guide frame is formed integrally with the second mold .

According to the processing apparatus of the present invention, the first mold frame that is movable in a predetermined direction and has a portion that is deformed by an external force, and a guide frame that guides the direction in which the first mold frame should move. A second metal mold that sandwiches the wood to be processed between the first mold and applies a compressive force, and the first mold is used to compress the wood. The end face pressing portion that abuts against the end face of the wood and applies a compressive force in a direction substantially orthogonal to the thickness direction of the abutting end face. Molding can be performed without causing cracks in the wood.

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

(Embodiment 1)
FIG. 1 is a perspective view schematically showing a configuration of a compressed wood product formed by a processing apparatus according to Embodiment 1 of the present invention. 2 is a cross-sectional view taken along line AA in FIG. The compressed wooden product 1 shown in these two figures has a predetermined angle with respect to the main plate portion 1a from a main plate portion 1a having a substantially rectangular surface and two sides substantially parallel to the longitudinal direction of the surface of the main plate portion 1a. And two side plate portions extending at a predetermined angle with respect to the main plate portion 1a from each of two sides substantially parallel to the lateral direction of the surface of the main plate portion 1a. 1c. The thickness (r) of the compressed wood product 1 is substantially uniform, and the surface of the main plate portion 1a forms a plate surface. The cross section taken along the line BB in FIG. 1 is substantially the same as the cross section taken along the line AA shown in FIG. 2 except that the dimensions are different.

  Next, a method for processing wood for forming the compressed wooden product 1 will be described. In the following description, the case where the compressed wood product 1 having the above-described shape is formed will be described. However, the processing method described here is also applicable to compressed wood products having other shapes.

First, the wood used as the raw material of the compressed wood product 1 is formed from the raw wood. FIG. 3 is a perspective view schematically showing a configuration of wood before being processed by cutting or the like from an uncompressed solid material that is a raw wood. 4 is a cross-sectional view taken along the line CC of FIG. The wood 11 shown in these figures is closer to a bowl than the compressed wood product 1 after molding (see FIG. 1), and the outer side surface 11a and the inner side surface 11b each have a smooth curved surface and are thick (r ₀ ) is almost uniform. The outer shape of the wood 11 has a substantially rectangular shape with rounded corners in plan view (viewed from above in FIG. 4). The wood 11 has a volume obtained by adding in advance a volume to be reduced by a compression process described later. 3 is substantially the same shape as the CC line cross section shown in FIG. 4 except that the dimensions are different.

  FIG. 5 is a diagram schematically showing a shaping position when shaping the wood 11 having the above configuration, and more specifically, a shaping position from the solid material of the cross-sectional portion shown in FIG. FIG. In order for the main plate portion 1a of the compressed wood product 1 to have a plate surface as shown in FIG. 1, the wood 11 must be shaped from a solid material so that the surface of the wood 11 forms a plate surface. For this reason, when the wood 11 is formed from the solid material 10, it is shaped so that the curvature of the side surface of the wood 11 is generally larger than the curvature of the wood grain 10G as shown in FIG. As the solid material 10, bamboo shoots, bamboo shoots, paulownia, cedar, pine, cherry blossom, cocoon, ebony, bamboo, teak, mahogany, rosewood and the like can be used.

  Note that the wood 11 may be other than a plate material, and may be a mesh material, a memorial material, or a mouthpiece material. That is, how to form the wood to be processed from the solid wood 10 depends on various uses such as the use of the compressed wood product as a result processed using the wood, the strength or the aesthetics required for the compressed wood product. What is necessary is just to determine in consideration of conditions.

  Subsequently, the wood 11 shaped as described above is compressed (compression step). Before this compression step, the wood 11 is left in a high-temperature and high-pressure steam atmosphere for a predetermined time. The high temperature and high pressure here means that the temperature is 100 to 230 ° C., more preferably about 180 to 230 ° C., and the pressure is 0.1 to 3 MPa (megapascal), more preferably about 0.45 to 2.5 MPa. Refers to the state. Thereby, the wood 11 absorbs moisture excessively and softens. Instead of leaving the wood 11 in the steam atmosphere described above, for example, the wood 11 may be compressed after being heated by a high-frequency electromagnetic wave such as a microwave.

  Thereafter, the wood 11 is compressed in the steam atmosphere described above. FIG. 6 is a perspective view showing a configuration of a main part of the processing apparatus according to the first embodiment, which is a processing apparatus for performing this compression step. The processing apparatus 3 shown in the figure includes an upper mold 31 (first mold) for applying a compressive force to the wood 11 from above the wood 11 to be processed, and a compression against the wood 11 from below the wood 11. A lower mold 41 (second mold) for applying a force, and a guide frame 51 that is fixedly disposed on the upper surface of the lower mold 41 and guides the direction in which the upper mold 31 should move are provided.

  FIG. 7 is a diagram showing a configuration of a main part of the processing apparatus 3 and an outline of a compression process of the wood 11, and is a longitudinal sectional view when the section taken along the line EE of FIG. 6 is taken as a cut surface. Hereafter, the structure of the principal part of the processing apparatus 3 is demonstrated in detail using FIG. 6 and FIG.

  First, the upper mold frame 31 is bonded to a rubber mold 32 made of a material (elastic body) such as silicon rubber that deformably contacts the inner surface 11 b that is one of the surfaces of the wood 11, and to the upper end of the rubber mold 32. And a movable die 33 having a substantially rectangular parallelepiped shape that is movable in the vertical direction. Among these, the rubber mold 32 holds the projecting portion 34 projecting downward and contacting at least a part of the inner surface 11b of the wood 11 and the end surface 11c of the wood 11, and is substantially orthogonal to the thickness direction of the end surface 11c during compression. And an end face pressing portion 35 that applies a compressive force in the direction to be pressed. In FIG. 7, the upper and lower sides of the cross section of the wood 11 are reversed from those in FIG. 4, and the inner side surface 11 b of the wood 11 is positioned upward.

  The lower mold 41 is realized by using a metal, and has a recess 42 into which the outer surface 11a of the wood 11 is inserted. The shape of the concave portion 42 matches the shape of the outer surface of the main plate portion 1 a of the compressed wooden product 1.

  The guide frame 51 has a hollow rectangular parallelepiped shape formed using a metal or a hard resin. The guide portion 52 facing the hollow portion is formed by penetrating in a substantially square frustum shape with a part of a pair of opposed surfaces of a rectangular parallelepiped forming the main body portion of the guide frame 51 as a bottom surface. The opening surface formed at the end of the guide portion 52 has a larger area than the opening surface positioned vertically upward when the processing apparatus 3 is assembled. Therefore, the substantially rectangular shape formed by the guide portion 52 intersecting the horizontal plane becomes smaller as it goes vertically downward. Of the opening surfaces formed at the end portions of the guide portion 52, the opening surface located vertically below forms a substantially rectangular shape that is congruent with the opening surface at the upper end of the recess 42 of the lower mold 41, and the congruent opening surfaces overlap each other. Assembled in this way. In this sense, the guide frame 51 may be formed integrally with the lower mold frame 41.

  When compressing the wood 11, the upper mold 31 is inserted from an opening surface (an opening surface having a larger area) formed at the upper end portion of the guide portion 52. As described above, the substantially rectangular shape in which the guide portion 52 is formed so as to intersect the horizontal plane becomes smaller as it goes vertically downward, so that the outer edge portion of the upper mold 31 is in the middle of being lowered. 52, and then descends to a predetermined position while sliding on the guide portion 52.

  In the case shown in FIG. 7, the inclination angle of the guide portion 52 and the inclination angle near the upper end of the recess 42 are substantially the same and are smoothly connected in the vicinity of the boundary, but more generally, the guide portion 52. It is sufficient that the opening surface at the lower end and the opening surface at the upper end of the recess 42 have the same shape and no step is formed at the boundary. As described above, the shape of the hollow portion to be penetrated depends on the final shape of the compressed wood product to be deformed, and includes a substantially polygonal frustum, a substantially truncated cone, or a substantially elliptic frustum depending on the final shape. It has a frustum shape.

  Next, the compression process performed by the processing apparatus 3 having the above-described configuration will be described with reference to FIG. The wood 11 is stationary by the outer edge portion of the end surface 11c coming into contact with and supported by the guide portion 52. Thereafter, when the upper mold 31 is lowered, the lower end portion of the projecting portion 34 first comes into contact with the center portion of the inner side surface 11 b of the wood 11. In the state shown in FIG. 7, the shape of the inner side surface 11 b and the shape of the protruding portion 34 do not completely coincide with each other, so that a gap is also generated between the peripheral edge portion of the inner side surface 11 b and the protruding portion 34. Yes.

  FIG. 8 is a diagram illustrating a state in the middle of lowering the upper mold 31 from the state illustrated in FIG. 7. As shown in FIG. 8, by lowering the upper mold 31, the rubber mold 32 itself is also deformed by being pressed by the movable mold 33 and the wood 11, and the region that contacts the inner surface 11 b is the surface of the wood 11. It gradually spreads from the central part to the peripheral part. At the same time, the end face pressing portion 35 of the rubber mold 32 contacts the end face 11c and applies a compressive force in a direction perpendicular to the thickness direction of the end face 11c. As a result, the region where the compressive force acts on the surface of the wood 11 expands as the upper mold frame 31 descends, and the gap between the outer surface 11 a and the lower mold frame 41, and the inner surface 11 b and the rubber mold 32. The gap between them gradually decreases with deformation. At this time, the thickness of the timber 11 also gradually decreases in thickness at the periphery, beginning with the decrease in thickness near the center, and eventually decreases as a whole.

  By the way, in order to smoothly slide the outer edge portion of the rubber mold 32 with respect to the guide portion 52, the surface of the guide portion 52 may be coated with a material such as Teflon (registered trademark) in advance. In this case, the wood 11 can easily slide on the surface of the guide portion 52, so that it is possible to more reliably prevent cracks from occurring when the wood 11 descends. The outer edge of the rubber mold 32 may be coated with a material such as Teflon (registered trademark).

  As described above, by applying the rubber mold 32 that can be deformed by an external force to the upper mold 31, the rapid deformation of the wood 11 can be mitigated by the deformation of the rubber mold 32 itself during compression. Further, since the end surface pressing portion 35 presses the end surface 11c to restrict the expansion of the wood 11 in the direction perpendicular to the thickness direction, even if the shape change of the wood 11 is large, Since the tensile force is no longer applied and the wood 11 can be deformed only by the compression force, it is possible to prevent the wood 11 from being cracked.

  Thereafter, when the rubber mold 32 completely fills the gap with the wood 11 and a predetermined compressive force is applied to the wood 11, the lowering of the movable mold 33 is stopped. FIG. 9 is a diagram showing a state in which the deformation of the wood 11 is almost completed in the compression process. In the state shown in FIG. 9, a uniform compressive force acts on the wood 11 from the rubber mold 32 regardless of the location due to the characteristics of the rubber mold 32 as an elastic body. After elapse of a predetermined time in this state, the upper mold 31 and the lower mold 41 are separated.

  Subsequently, in a steam atmosphere similar to the compression step, a shaping mold (hereinafter referred to as a shaping mold) different from the upper mold 31 is lowered, and the wood 11 is moved between the lower mold 41 and the lower mold 41. Shaping is performed by clamping (shaping process). FIG. 10 is a view showing a state when the wood is compressed in this shaping step (a state in which the deformation of the wood 11 is almost completed), and is a longitudinal sectional view when seen on the same cut surface as FIG.

  In this shaping step, the shaping die 61 that applies a compressive force from above the wood 11 has a convex portion 62 that is shaped to fit into the inner surface 11 b of the wood 11. The convex portion 62 accurately corresponds to the shape of the inner surface of the compressed wooden product 1 and can shape a portion where the compression by the rubber mold 32 was insufficient in the compression step, such as the vicinity of the end surface 11c of the wood 11. It has a simple shape. After leaving for a predetermined time in the compressed state shown in FIG. 10, the lower mold 41 and the shaping die 61 are separated to release the compression, and the wood 11 is dried by releasing the above-described high-temperature and high-pressure steam atmosphere to dry the wood 11. The wooden product 1 is completed.

The thickness r of the compressed wooden product 1 obtained by the processing method described above is about 30 to 50% of the thickness r ₀ before compression of the wood 11 shaped from the solid wood 10. In other words, the compression ratio (r ₀ −r) / r ₀ of wood is about 0.5 to 0.7. The compression rate in each process can be changed according to conditions such as the type of the wood 11 and the use of the compressed wood product 1. For example, only the shape may be changed greatly without changing the wall thickness in the compression step, and compression in the thickness direction may be mainly performed in the shaping step.

  By the way, depending on the shape and application of the compressed wood product to be processed, a predetermined three-dimensional shape may be obtained with sufficient accuracy after the compression process. In such a case, it is not always necessary to perform the shaping process.

  When the upper mold 31 or the shaping mold 61 is moved up and down with respect to the lower mold 41, the driving means for electrically driving the upper mold 31 or the shaping mold 61 and the driving means The processing device 3 may be provided with a control means for performing the drive control of the above, and the upper mold 31 or the shaping die 61 may be electrically driven to control the compression force applied to the wood 11. On the other hand, the upper mold 31 or the shaping mold 61 and the lower mold 41 are connected with a screw, and the upper mold 31 or the shaping mold 61 is fixed to the lower mold 41 by manually or automatically tightening the screw. May be moved up and down to control the compression force applied to the wood 11.

  Further, as the shaping step, the shape of the surface may be shaped by cutting the surface of the wood to be processed. Such a shaping process is, for example, in the state after the compression process, when the thickness of the section of the timber remains larger than the thickness of the other part, or when shaping the surface of the timber flatly, etc. Is preferred.

  The high-temperature and high-pressure steam atmosphere in the compression process is realized, for example, inside the pressure vessel. In this case, since only a limited space can be secured inside the pressure vessel, it is not possible to take a long stroke of the drive-side mold or mold. In the case of the upper mold 31 described above, an extra stroke can be taken as compared with a normal mold as much as the rubber mold 32 is deformed, so that a compression force can be freely applied even in a limited space. .

  According to the processing apparatus according to the first embodiment of the present invention described above, in order to apply a compressive force to the wood, the upper mold frame in which the contact portion with the wood is a rubber mold, and the movement direction of the upper mold frame Even if the shape change before and after the compression of the wood is large by providing the guide frame for guiding and the lower mold frame that sandwiches the wood between the upper mold frame and applies a compressive force, Molding can be performed without causing cracks in the wood.

  Further, according to the first embodiment, the surface of the upper mold frame that comes into contact with the wood is a rubber mold, so that the rubber mold is deformed at the time of compression and uniformly applies a compressive force to the wood surface. Therefore, the density of the wood can be made uniform regardless of the shape of the wood to be processed, and it becomes possible to impart a uniform strength to the compressed wood.

  Furthermore, according to the first embodiment, the shape of the surface that comes into contact with at least the lower mold frame, which is a mold, can be accurately deformed by the compression process, so that the shape accuracy of only one side surface of the compressed wooden product is required. If so, the processing of the wood can be completed in the compression step. Therefore, various processing according to conditions, such as a use of compressed wood products and the required aesthetics, can be performed.

  Instead of realizing the upper mold using a rubber mold that is an elastic body, the upper mold may be realized using a mold made of a viscoelastic body containing a more general polymer gel. That is, a material having at least one of viscosity and elasticity may be applied as a material of a portion of the upper mold frame that comes into contact with the wood to be processed.

(Embodiment 2)
FIG. 11 is a perspective view showing a configuration of an upper mold (first mold) that forms part of the processing apparatus according to Embodiment 2 of the present invention. 12 is a cross-sectional view taken along line FF in FIG. The upper mold 71 shown in these figures is formed by a main body 72 having a substantially rectangular parallelepiped shape and a protrusion that can be moved forward and backward in the outer peripheral direction of the side of the main body 72, and is pressed against the end surface of the wood when compressing the wood. A plurality of end surface pressing portions 73 that are in contact with each other and apply a compressive force in a direction substantially orthogonal to the thickness direction of the abutting end surface. Of these, the main body 72 has a holding portion 74 formed on the side surface for holding each end surface pressing portion 73 and a bottom portion 75 that abuts against the surface of the wood to be processed and applies a compressive force. The end surface pressing portion 73 is connected to the other end of an elastic member 76 such as a spring whose one end is fixed to the holding portion 74, and is biased in the outer peripheral direction of the side surface of the main body 72.

  FIG. 13 is a diagram showing a configuration of a main part of the processing apparatus according to the second embodiment and an outline of a wood compression process, and is a longitudinal sectional view corresponding to FIG. 7 of the first embodiment. The processing apparatus 5 shown in FIG. 13 includes an upper mold frame 71, a lower mold frame 41, and a guide frame 51 having the above-described configuration. Among these, the configurations of the lower mold 41 and the guide frame 51 are as described in the first embodiment. The upper mold 71 is driven in the same manner as the upper mold 31 is driven. The wood 11 to be processed is shaped from the solid material 50 in the same manner as in the first embodiment, and is left to soften by being left in the above-described high-temperature and high-pressure steam atmosphere for a predetermined time prior to compression. To do.

  When the upper mold 71 of the processing apparatus 5 is lowered in the same steam atmosphere as described above, a part of the bottom surface portion 75 starts to contact the inner side surface 11b of the wood 11. Specifically, the curved peripheral portion of the bottom surface portion 75 abuts on the peripheral portion of the inner surface 11b. Further, a part of the end surface 11 c (near the upper end portion) is in contact with the bottom surface of the end surface pressing portion 73. In the state shown in FIG. 13, the shape of the inner side surface 11 b and the shape of the bottom surface portion 75 do not match, and therefore, between the central portion of the inner side surface 11 b and the central portion of the bottom surface portion 75, or between the end surface 11 c and the end surface pressing portion 73. There is a gap between the bottom.

  FIG. 14 is a diagram illustrating a state in the middle of lowering the upper mold 71 from the state illustrated in FIG. 13. When the upper mold 71 is lowered from the state shown in FIG. 13, the outer edge portion of the bottom surface of the end surface pressing portion 73 comes into contact with the surface of the guide portion 52 and receives a drag force, and resists the biasing force of the elastic member 76. The end surface pressing portion 73 gradually retracts in the holding portion 74 in the direction of the center of gravity of the main body portion 72. At this time, the lower end of the end surface pressing portion 73 abuts on the end surface 11c of the wood 11 and a compressive force is applied in a direction substantially orthogonal to the thickness direction of the abutting end surface 11c. As it slides down on the surface of 52, it gradually deforms. In this process, the contact area between the bottom surface portion 75 and the inner surface 11b of the wood 11 increases, and the contact area between the bottom surface of the end surface pressing portion 73 and the end surface 11c also increases. Then, the state shown in FIG. 14, that is, the state in which the vicinity of the center portion of the outer surface 11 a comes into contact with the recess 42 of the lower mold frame 41 is reached.

  Thereafter, when the upper mold 71 is further lowered, the region where the compressive force acts on the surface of the wood 11 gradually expands, and the gap between the outer surface 11a and the lower mold 41 and the inner surface The gap between 11b and the upper mold 71 is further reduced.

  FIG. 15 is a view showing a state in which the deformation of the wood 11 is almost completed as a result of the upper mold 71 being lowered to the lowest point. In the state shown in the figure, the bottom surface of the end surface pressing portion 73 and the end surface 11c face each other without any gap, and the bottom surface portion 75 and the inner side surface 11b also contact each other without any gap. By maintaining this state for a predetermined time, at least a portion of the wood 11 sandwiched between the end surface pressing portion 73 and the recess 42 can be deformed into a predetermined shape.

  In addition, the part which is not pressed by the end surface press part 73 among the end surfaces 11c after the compression process mentioned above has the shape distorted by the influence of the wood component escaping from the part pressed by the end surface press part 73. In some cases. In such a case, the shaping process may be performed using a shaping die as in the first embodiment, or the unevenness of the end surface 11c may be leveled by cutting or the like.

  In the second embodiment, since the upper mold 71 and the lower mold 41 are both made of metal, the surface shape of those molds changes except for the deformation of the upper mold 71 due to the retreat of the end face pressing portion 73. There is no. For this reason, in order to prevent cracking of the wood 11 due to compression, it is necessary to leave a degree of freedom in which a part of the wood component can escape to the open space. Therefore, for example, in the compressed wood product 1 after processing, a portion where wood components escaping by compression from two directions gather, such as a portion that becomes a boundary between the side plate portion 1b and the side plate portion 1c, is an end face during the compression process. It is more preferable that the compressive force by the pressing portion 73 is not applied. As described above, the number, size, installation position, and the like of the end surface pressing portions 73 provided on the upper mold 71 may be appropriately determined according to the final shape of the wood 11 to be processed, that is, the shape of the compressed wooden product.

  According to the processing apparatus according to the second embodiment of the present invention described above, a metal upper mold frame having a plurality of end face pressing portions that are movable forward and backward in the outer circumferential direction in order to apply a compressive force to the wood, and the upper mold By providing a guide frame that guides the moving direction of the frame and a lower mold frame that sandwiches the wood between the upper mold frame and applies a compression force, as in the first embodiment, the wood Even when the shape change before and after the compression is large, the wood can be molded without causing cracks.

  Further, according to the second embodiment, since the upper mold frame is also made of metal, the portion where the upper mold frame is in contact with the wood can be compression-molded with higher shape accuracy.

  So far, the first and second embodiments have been described as the best modes for carrying out the present invention, but the present invention should not be limited only by these two embodiments. That is, 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. Is possible.

  Compressed wood products processed by the processing apparatus according to the present invention are digital camera, mobile phone, portable communication terminal such as PHS or PDA, portable audio device, IC recorder, portable television, portable radio, various home appliances. It can be applied as an exterior material for remote control, digital video and the like. In this case, the thickness of the compressed wooden product is preferably about 1.6 mm.

It is a perspective view which shows the structure of the compression wooden product formed by the processing apparatus which concerns on Embodiment 1 of this invention. It is the sectional view on the AA line of FIG. It is a perspective view which shows the structure before the process of the timber to be processed. It is CC sectional view taken on the line of FIG. It is a figure which shows the condition which shapes the timber to be processed from solid wood. It is a figure which shows the structure of the principal part of the processing apparatus which concerns on Embodiment 1 of this invention. In the compression process performed using the processing apparatus which concerns on Embodiment 1 of this invention, it is sectional drawing which shows a state when an upper mold frame begins to contact | abut to wood. It is sectional drawing which shows the state in the middle of the deformation | transformation of the timber in the compression process performed using the processing apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the state which the deformation | transformation of wood was completed in the compression process performed using the processing apparatus which concerns on Embodiment 1 of this invention. It is a longitudinal cross-sectional view which shows the outline | summary of a shaping process. It is a perspective view which shows the structure of the upper mold frame (1st mold frame) which makes a part of processing apparatus which concerns on Embodiment 2 of this invention. It is the FF sectional view taken on the line of FIG. It is sectional drawing which shows the state when the structure of the main part of the processing apparatus which concerns on Embodiment 2 of this invention, and an upper mold | frame begins to contact | abut wood when compressing wood using this processing apparatus. It is sectional drawing which shows the state in the middle of the deformation | transformation of the timber in the compression process performed using the processing apparatus which concerns on Embodiment 2 of this invention. It is sectional drawing which shows the state which the deformation | transformation of wood was completed in the compression process performed using the processing apparatus which concerns on Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Compression wood product 1a Main board part 1b, 1c Side board part 3, 5 Processing apparatus 10 Solid wood 10G Wood grain 11 Wood 11a Outer side surface 11b Inner side surface 11c End surface 31, 71 Upper formwork (1st formwork)
32 Rubber mold 33 Movable mold 34 Protruding part 35, 73 End face pressing part 41 Lower mold (second mold)
42 concave portion 51 guide frame 52 guide portion 61 shaping mold 62 convex portion 72 main body portion 74 holding portion 75 bottom surface portion 76 elastic member

Claims (6)

A processing apparatus for processing the wood into a predetermined three-dimensional shape by compressing the wood to be processed,
A first mold that is movable in a predetermined direction and has a portion that is deformed by an external force;
A guide frame for guiding a direction in which the first mold should move;
A second metal formwork that sandwiches the wood with the first formwork and applies a compressive force;
With
The first formwork is
A projecting portion that abuts on the surface of the wood when compressing the wood, and applies a compressive force while gradually expanding the area of the abutting surface from the central portion to the peripheral portion of the surface;
An end face pressing portion that abuts against the end face of the wood when compressing the wood, and applies a compressive force in a direction substantially perpendicular to the thickness direction of the abutting end face ;
With
The projecting portion and the end face pressing portion are made of a material having at least one of viscosity and elasticity . A processing apparatus for processing the wood into a predetermined three-dimensional shape by compressing the wood to be processed,
A first mold that is movable in a predetermined direction and has a portion that is deformed by an external force;
A guide frame for guiding a direction in which the first mold should move;
A second metal formwork that sandwiches the wood with the first formwork and applies a compressive force;
With
The first formwork is
The main body portion of the first mold is formed so as to be able to advance and retreat in a predetermined outer circumferential direction, abuts against the end surface of the wood when compressing the wood, and substantially perpendicular to the thickness direction of the abutting end surface. machining apparatus which is a mold having a plurality of end surface pressing portion to apply a compressive force to the direction. The end face pressing portion is
The processing apparatus according to claim 2 , wherein the processing apparatus is urged in the outer circumferential direction by an elastic member provided between the end surface pressing portion and the main body portion of the first formwork . The guide frame is
It has a guide part formed by penetrating the main body part of the guide frame in a substantially frustum shape,
The opening surface with the smaller area among the opening surfaces formed at the end of the guide portion has the same shape as the opening surface of the second formwork . The processing apparatus according to one item . The guide frame is
5. The processing apparatus according to claim 4, wherein the first mold can be inserted from an opening surface having a larger area among opening surfaces formed at an end portion of the guide portion . The guide frame is
The processing apparatus according to claim 1, wherein the processing apparatus is formed integrally with the second formwork .

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