JP2019006000A - Laminated lumber and manufacturing method of laminated lumber - Google Patents

Abstract

The present invention provides a laminated material capable of improving strength and a method for producing the laminated material.
In the laminated material according to the present embodiment, the flat surfaces of a plurality of long bar materials each having a flat surface extending in the longitudinal direction are joined to each other in the rod-shaped laminated material. The bar is formed by joining the longitudinal ends of three or more short bars each having a non-uniform length, and joining the short bars in one long bar The position of the portion is shifted by an appropriate length in the longitudinal direction from the position of the joint portion in the other long bar material, and the position of the joint portion in the one long bar material is different from that in the other long bar material. The amount of deviation up to the position of the joint portion closest to the joint portion in the one long bar among the joint portions is uniform.
[Selection] Figure 3

Description

  The present invention relates to a rod-shaped laminated material and a method for producing the laminated material.

  Patent Document 1 discloses a handrail for stairs formed by appropriately combining a plurality of laminated blocks (square bar-shaped laminated material). Each laminated block is formed by laminating a plurality of plate-like bodies having a rectangular cross section. Each plate-like body is a long material formed by joining ends of a plurality of short materials each having a rectangular cross section.

  The joint portion between the short members in the plate-like body has lower strength than the non-joint portion in the plate-like body. Therefore, at the time of forming the laminated block, the plurality of plate-like bodies are laminated such that the position of the joint portion in one plate-like body is shifted from the position of the joint portion in the other plate-like body by an appropriate length in the longitudinal direction. Then, since the joining portion in one plate-like body is reinforced by the non-joining portion in the other plate-like body, the strength of the laminated block can be improved.

JP 2003-293542 A

  However, when, for example, lamina is used as the short material, the length of the short material is not necessarily uniform. Different from each other. Therefore, even if the first joint portion in one plate-like body is separated from the first joint portion in the other plate-like body by an appropriate length, the second joint portion in one plate-like body is another plate. There is a possibility that it is adjacent to or closely arranged to the second joint portion of the body. Then, the problem that the intensity | strength of the 2nd junction part in a lamination | stacking block falls arises.

  This invention is made | formed in view of such a situation, The main objective is to provide the manufacturing method of the laminated material which can improve intensity | strength, and a laminated material.

  In the laminated material according to the present embodiment, in the rod-shaped laminated material, the flat surfaces of a plurality of long bar materials each having a flat surface extending in the longitudinal direction are joined, and each long bar material is It is formed by joining the longitudinal ends of three or more short bars each having a non-uniform length, and the position of the joining part of the short bars in one long bar is The position of the joint portion in the other long bar is shifted from the position of the joint portion in the other long bar by an appropriate length in the longitudinal direction, and the position of the joint portion in the other long bar from the position of the joint portion in the one long bar. Among them, the amount of deviation up to the position of the joint portion closest to the joint portion in the one long bar is uniform.

  The laminated material according to the present embodiment includes three or more of the long bars, and at least one of the long bars has two flat surfaces parallel to each other, and each of the long bars The position of the joint part in is shifted in the longitudinal direction from the position of the joint part in at least two other long bars.

  The laminated material according to the present embodiment includes four long bars, and each of the two long bars has two flat surfaces parallel to each other, and the two long bars. The flat surfaces on one side of each of the bar members are joined so that the longitudinal positions of the joining portions of the two long bar members coincide with each other, and the two long bar members The flat surfaces of the remaining two long bars are joined to the other flat surface.

  The method of manufacturing a laminated material according to the present embodiment is a method of manufacturing a rod-shaped laminated material, in which a long rectangular bar is formed by joining the longitudinal ends of three or more short rectangular bars to each other. Then, by dividing the formed long rectangular bar along the longitudinal direction, a plurality of divided bodies are formed, and the position of the joint portion of the short rectangular bars in one divided body is divided into other parts. The side surfaces of the plurality of divided bodies are joined to each other by shifting by an appropriate length in the longitudinal direction from the position of the joining portion in the body.

  In the method for manufacturing a laminated material according to the present embodiment, three or more divided bodies are formed, and the position of the joint portion in each divided body is longer than the position of the joint portion in at least two other divided bodies. It is characterized by shifting in the direction.

  The manufacturing method of the laminated material which concerns on this Embodiment forms the said short square rod by joining the side surfaces of several squares.

  In the present embodiment, the position of the joint portion between the short bars in one long rod is appropriately shifted in the longitudinal direction from the position of the joint portion in the other long rod. Therefore, the joining part in one of one long bar and the other long bar is reinforced by the non-joining part in the other of one long bar and the other long bar. Therefore, the strength of the laminated material can be improved.

  In the laminated material according to the present embodiment, from the position of the joint portion in one long bar member, the joint portion closest to the joint portion in one long bar member among the joint portions in other long bar members The amount of deviation up to the position is uniform (all equal).

  In order to manufacture such a laminated material, for example, in the method for producing a laminated material according to the present embodiment, a length formed by joining the end portions in the longitudinal direction of three or more short rectangular bars to each other. A scale bar is used. A plurality of divided bodies are formed by dividing the long rectangular bar along the longitudinal direction. The laminated material is formed by joining side surfaces of a plurality of divided bodies. Each divided body corresponds to one or a plurality of long bars constituting the laminated material.

  The interval between the joint portions in one divided body and the interval between the joint portions in the other divided body are equal to each other. Therefore, if the position of the joint part of the short rectangular bars in one divided body is shifted in the longitudinal direction by an appropriate length from the position of the joint part in the other divided body, the longitudinal direction of the short square bars constituting the long square bar Even if the length is non-uniform, there is no possibility that the joint portion in one divided body is adjacent to or adjacent to the joint portion in the other divided body. Further, the amount of deviation from the position of the joint portion in one divided body to the position of the joint portion closest to the joint portion in one divided body among the joint portions in the other divided bodies becomes uniform.

  In the present embodiment, the position of the joint portion in each long bar among the three or more long bars is at least two other lengths of the three or more long bars. It has shifted | deviated to the longitudinal direction from the position of the junction part in a shaving bar material. Therefore, the joining part in each long bar is reinforced by the non-joining part in at least two other long bars. Therefore, the strength of the laminated material can be further improved.

  In order to manufacture such a laminated material, for example, in the laminated material manufacturing method according to the present embodiment, three or more divided bodies are formed. If the position of the joint portion in each of the three or more divided bodies is shifted in the longitudinal direction from the position of the joint portion in at least two other divided bodies of the three or more divided bodies, There is no possibility that the joint portion in the body is adjacent to or close to the joint portion in at least two other divided bodies.

  In the present embodiment, of the four long bars, the joining portions of the two long bars are adjacent to each other. However, the positions of the joint portions of the two long bars are shifted in the longitudinal direction from the positions of the joint portions of the remaining two long bars, and the two long bars remain. Are sandwiched between two long bars. Therefore, it is possible to prevent the low strength of the joint portions adjacent to each other from adversely affecting the strength of the laminated material.

  In this embodiment, since the short square bar is formed using a plurality of square bars, for example, a lamina having a smaller cross-sectional area than the short square bar is effective as the square bar constituting the short square bar. Can be used.

  In the case of the laminated material and the manufacturing method of the laminated material of the present embodiment, the strength of the laminated material can be improved.

It is a perspective view which shows the laminated material which concerns on embodiment. It is a disassembled perspective view which shows a laminated material. It is a top view which shows a laminated material. It is a perspective view which shows the square bar and the short square bar for demonstrating the manufacturing method of the laminated material which concerns on embodiment. It is a side view for demonstrating formation of the long square bar using a short square bar. It is a top view for demonstrating formation of the long square bar using a short square bar. It is a top view for demonstrating division | segmentation of a elongate square bar. It is a top view for demonstrating formation of the rod body using a division body. It is a top view for demonstrating formation of the laminated material using a rod. It is a perspective view for demonstrating formation of the laminated material using a rod.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.

FIG. 1 is a perspective view showing a laminated material according to an embodiment.
FIG. 2 is an exploded perspective view showing the laminated material.
FIG. 3 is a plan view showing the laminated material.
In the figure, reference numeral 1 denotes a round bar-like laminated material, and the laminated material 1 includes four long bars 11, 12, 13 and 14. The long bars 11 and 14 have the same shape, and the long bars 12 and 13 have the same shape.

  The long bar 11 has an arcuate cross section. A part of the peripheral surface of the long bar 11 is a flat surface 11 a, and the flat surface 11 a has a rectangular shape extending in the longitudinal direction of the long bar 11. The remaining part of the peripheral surface of the long bar 11 is a curved surface 11b.

The long bar 12 has an isosceles trapezoidal cross section in which two legs form an arc shape. Part of the peripheral surface of the long bar 12 is flat surfaces 12 a and 12 b, and each of the flat surfaces 12 a and 12 b has a rectangular shape extending in the longitudinal direction of the long bar 12. The flat surfaces 12a and 12b are parallel to each other. The width of the flat surface 12a (the length in the vertical direction in FIG. 2) is shorter than the width of the flat surface 12b. The flat surface 12a and the flat surface 11a of the long bar 11 are congruent and face each other. The remainder of the circumferential surface of the long bar 12 is curved surfaces 12c and 12d.
Similarly, the long bar 13 has an isosceles trapezoidal cross section in which two legs form an arc shape, and part of the peripheral surface of the long bar 13 is flat surfaces 13a and 13b. The flat surface 13b and the flat surface 12b of the long bar 12 are congruent and face each other. The remainder of the peripheral surface of the long bar 13 is curved surfaces 13c and 13d.

  Like the long bar 11, the long bar 14 has a bow-shaped cross section, and a part of the peripheral surface of the long bar 14 is a flat surface 14a. The flat surface 14a and the flat surface 13a of the long bar 13 are congruent and face each other. The remainder of the circumferential surface of the long bar 14 is a curved surface 14b.

  The long bars 11, 12, 13, and 14 have the flat surfaces 11a and 12a of the long bars 11 and 12 joined to each other, and the flat surfaces 12b and 13b of the long bars 12 and 13 are joined to each other. The flat surfaces 13a, 14a of the bar members 13, 14 are joined to each other. The long bars 11, 12, 13, and 14 are joined using, for example, an adhesive. On the circumferential surface of the laminated material 1, a curved surface 11b, a curved surface 12c, a curved surface 13d, a curved surface 14b, a curved surface 13c, and a curved surface 12d are arranged in this order in the circumferential direction.

The long bar 11 is formed by joining end portions in the longitudinal direction of three or more short bars 111, 111,. Adjacent short bars 111, 111 are joined by finger joints. Therefore, the long bar 11 has the joining parts 112, 112,... Of the short bars 111, 111,.
The lengths of the short bars 111, 111,... Are not uniform. Therefore, the space | interval of joining part 112,112, ... in the elongate bar 11 is non-uniform | heterogenous.
Similarly, the long bar 14 is formed by joining three or more short bars 141, 141,..., And joining portions 142, 142,... Of the short bars 141, 141,. Have The intervals between the joining portions 142, 142,... In the long bar 14 are not uniform.

The long bar 12 is formed by joining the ends in the longitudinal direction of three or more short bars 121, 121,. Therefore, the long bar 12 has the joining parts 122, 122,... Of the short bars 121, 121,. Adjacent short bars 121 and 121 are joined to each other by finger joints.
The lengths of the short bars 121, 121,... Are not uniform. Therefore, the space | interval of joining part 122,122, ... in the elongate bar 12 is non-uniform | heterogenous.
Similarly, the long bar 13 is formed by joining three or more short bars 131, 131,... And joining portions 132, 132,... Of the short bars 131, 131,. Have The intervals between the joining portions 132, 132,... In the long bar 13 are not uniform.

  The longitudinal position of the joint portions 122, 122,... In the long bar 12 and the longitudinal position of the joint portions 132, 132,.

  On the other hand, the positions of the joint portions 122, 122,... In the long bar 12 are appropriately shifted in the longitudinal direction from the positions of the joint portions 112, 112,. Further, the positions of the joint portions 132, 132,... In the long bar 13 are shifted from the positions of the joint portions 142, 142,.

  .. From the position of the joining portions 122, 122,... In the long bar 12 and the joining closest to the joining portions 122, 122,. The amount of deviation up to the position of the portions 112, 112,... Is uniform with the amount of deviation a (a is a real number where a> 0) shown in FIG. Further, from the position of the joining portions 132, 132,... In the long bar 13, the joining portions 132, 132,. The amount of deviation up to the position of the close joint portions 142, 142,... The deviation amounts a and b may be a = b or a ≠ b.

The positions of the joint portions 112, 112,... In the long bar 11 are shifted from the positions of the joint portions 142, 142,.
.. From the position of the joint portions 112, 112,... In the long bar 11 and the joint closest to the joint portions 112, 112,. The amount of deviation up to the position of the portions 142, 142,... Is uniform with the amount of deviation {a + b}.

  That is, the positions of the joint portions 112, 112,... In the long bar 11 are shifted in the longitudinal direction from the positions of the joint portions of the three other long bars 12, 13, 14, respectively. The positions of the joint portions 142, 142,... In the material 14 are shifted in the longitudinal direction from the positions of the joint portions in the three other long bars 11, 12, and 13, respectively. Moreover, the position of the joining part in joining part 122,122, ... (and joining part 132,132, ... in the long bar 13) in the long bar 12 is two other long bars 11,14. Each of them is displaced in the longitudinal direction from the position of the joint portion. And from the position of the junction part in one long bar among long bars 11, 12, and 14 (or long bars 11, 13, and 14), long bars 11, 12, and 14 (or Of the long bar 11, 13, 14), the amount of misalignment up to the position of the bonded part closest to the bonded part in one long bar is uniform. .

In the case of the laminated material 1 as described above, the joint portions 112, 112,... In the long bar 11 are reinforced by the non-joint portions in the long bars 12, 13, and 14, respectively. The portions 142, 142,... Are reinforced by the non-joined portions in the long bars 11, 12, and 13, respectively. In addition, the long bars 12 and 13 are sandwiched between the long bars 11 and 14, and the joint portions 122, 122,. Are reinforced by the non-joined portions of the long bars 11 and 14, respectively.
Therefore, the strength of the laminated material 1 can be improved.
The laminated material 1 is used as, for example, a stair railing, a handrail support, a balustrade, or a bar constituting a fence or a lattice.

FIG. 4 is a perspective view showing a square bar and a short square bar for explaining the method of manufacturing the laminated material 1 according to the embodiment.
In the figure, 21 and 22 are square bars, respectively, and 23 is a short square bar.
The manufacturer prepares two square bars 21 and 22. In the present embodiment, the lengths of the square members 21 and 22 in the longitudinal direction and the longitudinal and transverse lengths of the cross section are the same.
Each of the square members 21 and 22 is made of wood. Here, the wood is a solid material or a wooden material. For example, lamina may be used as the square members 21 and 22.

  The manufacturer forms the short rectangular bar 23 by joining the side surfaces of the square members 21 and 22. In the present embodiment, each of the square bars 21 and 22 has a rectangular cross section, and the short square bar 23 has a square cross section.

The cross-sectional shape of each of the square bars 21 and 22 may be square, and the cross-sectional shape of the short square bar 23 may be rectangular.
Further, when the prepared lengths of the square bars 21 and 22 are different from each other in the longitudinal direction or the vertical and horizontal lengths of the cross section, the manufacturer forms one bar by joining the side faces of the square bars 21 and 22 to each other. The short bar 23 may be formed by appropriately processing the formed bar (for example, cutting the end or cutting the side).

  The manufacturer forms three or more short rectangular bars 23, 23,. The lengths of the short rectangular bars 23, 23,... Are not uniform.

FIG. 5 is a side view for explaining the formation of a long rectangular bar using the short rectangular bars 23,.
FIG. 6 is a plan view for explaining the formation of a long rectangular bar using the short rectangular bars 23,.
In the figure, 24 is a long square bar. The manufacturer forms the long rectangular bar 24 by joining the ends in the longitudinal direction of the short rectangular bars 23, 23,. The formed long rectangular bar 24 has joint portions 241, 241,... Of the short rectangular bars 23, 23,. Adjacent short bars 23 and 23 are joined to each other by finger joints.
In the present embodiment, the short rectangular bars 23, 23,... Are bonded together so that the bonded surfaces of the square members 21, 22 in the respective short rectangular bars 23 are flush with each other. As a result, the boundary lines between the square members 21, 21,... Appearing on the side surfaces of the long rectangular bar 24 and the square members 22, 22,.

FIG. 7 is a plan view for explaining the division of the long rectangular bar 24.
The manufacturer cuts the long rectangular bar 24 along the longitudinal direction of the long rectangular bar 24 and divides it into three parts. In FIG. 7, the cutting position of the long rectangular bar 24 is indicated by a thick line.
In the present embodiment, the cut surface of the long square bar 24 is parallel to the joining surfaces of the square members 21 and 22, and the long square bar 24 is divided into three equal parts in the vertical direction in FIG.

The manufacturer forms three divided bodies 251, 252, and 253 having a uniform length in the longitudinal direction by dividing the long rectangular bar 24 into three.
Each of the divided bodies 251, 252, and 253 is a square bar. Further, the distance between the joint portions 241, 241,... In the divided body 251, the distance between the joint portions 241, 241,. Equal to each other.
The divided body 251 includes a part of each of the square members 21, 21,..., And the divided body 253 includes a part of each of the square members 22, 22,. On the other hand, the divided body 252 includes the remaining portions of the square members 21, 21,... And the remaining portions of the square members 22, 22,.

FIG. 8 is a plan view for explaining the formation of a rod body using the divided bodies 251, 252 and 253.
In the figure, reference numeral 26 denotes a rod body, and the rod body 26 has a square bar shape in which both end surfaces have steps.
After the formation of the divided bodies 251, 252, 253, the manufacturer shifts the position of the joint portions 241, 241,... In the divided body 251 from the position of the joint portions 241, 241,. Are shifted by a shift amount b in the longitudinal direction from the positions of the joint portions 241, 241,... In the divided body 252. The direction of shifting the divided body 251 and the direction of shifting the divided body 253 are opposite to each other. As a result, the rod body 26 is formed.

  Here, each of the shift amounts a and b is not more than half of the length in the longitudinal direction of the short rectangular bar 23 having the shortest length in the longitudinal direction. Therefore, there is no possibility that the joint portions 241, 241,... In the divided body 251 are adjacent to or close to the joint portions 241, 241,. Similarly, there is no possibility that the joint portions 241, 241,... In the divided body 252 are adjacent to or close to the joint portions 241, 241,.

  In the present embodiment, the divided bodies 251 and 253 are shifted in the opposite directions relative to the divided body 252, but the present invention is not limited to this. For example, the divided bodies 252 and 253 are relative to the divided body 251. May be shifted in opposite directions.

FIG. 9 is a plan view for explaining the formation of the laminated material 1 using the rod body 26.
FIG. 10 is a perspective view for explaining the formation of the laminated material 1 using the rod body 26.
In the figure, 27 is a laminated material, and the laminated material 27 has a rectangular bar shape. Each of both end surfaces of the laminated material 27 is a square flat surface.
An operator forms the square bar-shaped laminated material 27 by cutting the both ends of the rod body 26 at appropriate positions.

  In the laminated material 27, the joining portions 241, 241,... In each divided body of the divided bodies 251, 252, 253 are respectively non-bonded in the two other divided bodies of the divided bodies 251, 252, 253. Since it is reinforced by the joining portion, the strength of the laminated material 27 can be improved.

  Here, it is considered that the strength of the laminated material 27 is improved as the deviation amounts a and b are larger (that is, as the joining portion 241 is further away from the other joining portion 241). However, when each of the shift amounts a and b is too large, there arises a problem that the end material generated by cutting both ends of the rod body 26 shown in FIG. 8 becomes unnecessarily large. Therefore, it is necessary to appropriately determine the shift amounts a and b.

  After forming the laminated material 27, the operator cuts four side surfaces of the laminated material 27 to form the laminated material 1 shown in FIG. In FIG. 10, the contour of the end face of the laminated material 1 is indicated by a two-dot chain line.

The laminated material 27 may be used as a final product. Moreover, the laminated material 1 which has a non-circular cross section (for example, elliptical cross section) from the laminated material 27 may be formed.
When the short rectangular bar 23 is formed, three or more square bars may be joined. Alternatively, one square bar may be used as the short square bar 23. For example, when three square members are used, the side surfaces of the three square members may be joined so as to sandwich one square member in which two square members remain. Alternatively, two square members may be joined as shown in FIG. 4, and the side surfaces of the three square members may be joined so that the remaining one square member covers the boundary portion between the two square members.

When the long rectangular bar 24 is formed using the short rectangular bar 23 shown in FIG. 4, the bonded surfaces of the square members 21 and 22 in one short rectangular bar 23 and the bonded surfaces of the square members 21 and 22 in the other short rectangular bar 23. .. May be joined so that and are orthogonal to each other.
The long rectangular bar 24 is not limited to a configuration divided into three equal parts. The long square bar 24 may be divided non-uniformly, or may be divided into two or more than four.

  The embodiment disclosed this time is to be considered as illustrative in all points and not restrictive. The scope of the present invention is not intended to include the above-described meanings, but is intended to include meanings equivalent to the claims and all modifications within the scope of the claims.

1,27 Glue 11,12,13,14 Long bar 111,121,131,141 Short bar 112,122,132,142,241 Joint part 11a, 12a, 13a, 13b, 14a Flat surface 21, 22 Square material 23 Short square bar 24 Long square bar 251, 252, 253

Claims (6)

In rod-shaped laminated lumber,
The flat surfaces of a plurality of long bars each having a flat surface extending in the longitudinal direction are joined together,
Each long bar is formed by joining the longitudinal ends of three or more short bars each having a non-uniform length,
The position of the joint part between the short bars in one long bar is shifted by an appropriate length in the longitudinal direction from the position of the joint in the other long bar,
Deviation from the position of the joint portion in the one long bar to the position of the joint portion closest to the joint in the one long bar among the joint portions in the other long bar Glulam characterized in that the amount is uniform. Comprising three or more of the elongated bars,
At least one of the long bars has the two flat surfaces parallel to each other,
The laminated material according to claim 1, wherein the position of the joint portion in each long bar is shifted in the longitudinal direction from the position of the joint portion in at least two other long bars. Comprising the four long bars,
Each of the two long bars has two flat surfaces parallel to each other,
The flat surfaces of one of the two long bars are joined such that the positions in the longitudinal direction of the joining portions of the two long bars are aligned with each other,
The laminated material according to claim 2, wherein the flat surfaces of the remaining two long bars are joined to the other flat surface of each of the two long bars. In a method for producing a rod-shaped laminated lumber,
By joining the longitudinal ends of three or more short rectangular bars to each other, a long rectangular bar is formed,
By dividing the formed long rectangular bar along the longitudinal direction, a plurality of divided bodies are formed,
The position of the joint portion between the short rectangular bars in one divided body is shifted by an appropriate length in the longitudinal direction from the position of the joint portion in the other divided body,
A method for producing a laminated material, wherein the side surfaces of the plurality of divided bodies are joined together. Forming three or more segments,
The method for producing a laminated material according to claim 4, wherein the position of the joint portion in each divided body is shifted in the longitudinal direction from the position of the joint portion in at least two other divided bodies.   The method for producing a laminated lumber according to claim 4 or 5, wherein the short rectangular bars are formed by joining side surfaces of a plurality of square bars.

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