JPH0747507A - Manufacture of wooden mosaic block for decorative veneer - Google Patents

Abstract

PURPOSE:To provide decorative veneer of uniform thickness which has less pitting or blur than a lateral block constituted of long and wide single lumbers and is provided with single grains. CONSTITUTION:Relatively wide flitches constituted of single lumbers where single grains appear in its surface are cut and divided into narrow and roughly parallel flitches 1a along the main fiber direction of the lumber, and divided adjacent surfaces are bonded to each other to form a wooden parquet block 1 where single grains appear. By incorporating the wooden parquet block 1 into longitudinal and lateral flitches 3, 4, a wooden parquet flitch 6 for slice in a decorative veneer for large door is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a parquet block, which is mainly composed of a combination of prismatic woods formed for slicing to manufacture a veneer for makeup.

[0002]

2. Description of the Related Art Conventionally, a method of slicing a flitch to manufacture a veneer for use in wooden doors, walls, large-scale furniture, etc. is a slicer machine in a direction intersecting with the main fiber direction of wood (tree growth direction). It is known that there is horizontal slicing and vertical slicing that roughly slices along the main fiber direction. In addition, in the case of vertical lining, in order to prevent a partial reversal phenomenon of the flitch with respect to the fiber direction, Japanese Patent Publication No.
As shown in Japanese Patent Publication No. 884, a special method for removing trees for obtaining a flitch is proposed, and a method for slicing a veneered veneer including vertical flitch is disclosed in Japanese Examined Patent Publication No. 54-1832.
No. 2 and Japanese Patent Publication No. 55-43883 are known.

[0003]

A method of slicing a veneer for makeup from a flitch or a parquet block as described above is as follows.
It determines the slicing direction and angle in consideration of the fiber direction of wood, and is still an effective method for most wood used for veneer for makeup.

In addition, relatively hard wood such as oak, oak, oak, etc. is radial to the annual rings in the cross section of the raw wood, tiger spots on the grain surface, chasing or planing. In this case, a special cellular tissue called a spot (Fu), a silver mottle (Ginmoku), or a broad pulp line that appears as a broken line pattern scattered in the longitudinal direction or the diagonal direction (hereinafter referred to as "plaque"). ),
It was also found that these had great influence on flitch and parquet slices.

Further, a horizontal flitch made from wood, which is relatively hard wood such as oak, oak, keyaki, oak, etc.,
When the width or length of the slice surface is large, as shown in FIG. 2A, the cutting blade 2 for slicing sequentially rises on the slice surface as the slicing of the flitch 1 progresses, and the thickness of the veneer is increased. However, there is a drawback that the sliced veneer is often defective due to the formation of faint holes in the sliced veneer. Further, in order to solve these problems, it is theoretically necessary to set the thickness of the sliced veneer to a considerable thickness from the beginning, but increasing the thickness of the sliced veneer to the extent that perforation does not occur is simply There is a problem that not only the cost of the veneer is increased, but also the slicer machine needs to be made extremely large, and thus it is not possible to actually deal with these. Particularly, for example, in FIG.
As shown in, the sliced surface has a width of 740 mm and a length of 1950.
mm or 606 mm x 181 called Saburoku
When slicing a parquet block 6 having a single horizontal grain flitch 1 in a vertical horizontal frame flitch 3 and a horizontal vertical frame flitch 4 such as 8 mm, the cutting blade 2 in the horizontal horizontal flitch 1 is used. There is a problem in that the above-mentioned phenomenon of fading or perforation of the veneer cannot be avoided due to the large amount of floating. For this reason, conventionally, all large-sized veneer for makeup is sliced into small pieces and directly pasted directly onto the product or plywood surface. This invention uses a relatively large flitch grain made of a single piece of wood as described above to horizontally cut a part or all of the flitch into small width flitches in the vertical direction and divide each small width flitch into a single flitch shape again. It is intended to provide a method for manufacturing a parquet block that solves the above problems by adhesively fixing the parquet block for restoration.

[0006]

SUMMARY OF THE INVENTION The method of the present invention for solving the above-mentioned problems is a horizontal flitch 1'for the production of sliced veneer made of a single hard wood having grain on its surface.
Is cut so as to be divided into a plurality of narrow-width flitches 1a in a width substantially parallel to the main fiber direction within the width in the protruding direction,
Adjacent flitches of the narrow width flitch 1a are cut adjacent to each other.
It is characterized in that it is integrally bonded and fixed to form a single wood parquet block.
And a case where the surface grain of the parquet block 1 is a single grain or a grain, and these parquet blocks 1
Is manufactured in a long horizontal vertical flitch 4 and a short vertical horizontal flitch 3 to produce a parquet block for manufacturing a decorative veneer for a large wide door.

[0007]

When the parquet block 1 made of a single piece of wood is laid horizontally, the cutting blade 2 of the slicer machine does not float up, so that the whole is sliced with a uniform predetermined thickness without causing holes or fading phenomenon, and a uniform thickness. The single plate 7 of is obtained. Moreover, the veneer 7 is sliced by a grain having a single grain such as a grain or a grain.

When the above-mentioned parquet block 1 is incorporated into a parquet block 6 for slicing a large-sized door veneer in which a vertical flitch 4 and a horizontal flitch 3 are arranged in a frame, and sliced,
A door frame having a single and wide grain can be obtained without perforation or fading. At this time, the inclination of the unevenness 8 of the vertical flitch 3 is removed and sliced in the order of 0 ° or more with respect to the entering direction of the cutting blade 2 to form a hole in the vertical flitch 3 portion of the veneer 7. Apertures etc. are prevented.

[0009]

1 and 2B show a first embodiment of the present invention. In FIG. 1, 6 is, for example, 1950 mm in length and 74 in width.
A parquet block made of a hard material such as oak wood for obtaining a 0 mm large-sized decorative veneer 7 and sliced sequentially from the surface by a cutting blade 2 with a surface inclination angle θ from the side of the longitudinal direction. Then, the single plate 7 having a thickness of 0.2 to 0.4 mm is manufactured.

The block 6 has a column-shaped longitudinal vertical flitch 4 arranged at the side end, and four vertical lateral flitches 3 are sandwiched between the flitches 4 and 4 at predetermined intervals in the orthogonal direction. Are arranged in a state of being adhered and fixed, and a large number of small width flitches 1a, 1a ... Are adhered and fixed in the rectangular space between the lateral flitches 3, 3.
Are housed in a state in which the outer periphery is surrounded, and the outer peripheral surface is adhesively fixed to vertical and horizontal flitches 3, 4. In this example, three blocks 1 each having a single plate pattern are arranged in a rectangular frame.

As shown in FIGS. 1 and 2B, the parquet block 1 has a flitch 1'as shown in FIG. 2A.
Are cut in parallel into a small width of, for example, about 30 to 150 mm to form small flitches 1a, 1a ... And the adjacent cut surfaces a of each small flitch 1a, 1a. It is fixed and manufactured as shown in FIG. 2 (B), and the surface pattern (slice surface) b of the parquet block 1 is combined so that the wood pattern of the above-mentioned flitch 1 ′ appears as a single pattern in its original shape. . As the above-mentioned adhesives, Japanese Patent Publication Nos. 50-34083, 54-43048 and 57-
Known ones disclosed in Japanese Patent Nos. 22925, 57-38630 and the like are sufficient.

The above-mentioned unevenness 8 appears on each surface and is formed in the cross section on each of the flitches 3, 4, 1a, etc. In any case, the inclination α of the spots 8 with respect to the (direction along the slice surface b) is cut so that the cutting blade 2 is in the forward (approximately 0 ° to 90 °) direction that does not oppose the inclination of the spots. And it is assembled. With this configuration, when slicing, it is possible to prevent a trouble in which the spots on each of the flitches 3 and 4 (particularly, the vertical flitch 3) of the veneer 7 are chipped to form holes or chipped in a faint pattern. In a normal slicer machine, the cutting blade 2 is fixed on a fixed table, and the flitch and the parquet block are chucked downward on the movable table. The approach direction of the cutting blade 2 means the relative movement direction of these. To do.

By the way, since vertical stapling of a hard material flitch having spots often causes a hole punching phenomenon due to lack of spots, it has been conventionally impossible to stall such a large flitch. As proposed in the specification and the drawing of Japanese Patent Application No. 5-103658, the person who cuts wood and slices so that the inclination of the spots with respect to the slice direction is the forward inclination in such a case, Allows slicing of large veneer.

Of the above construction, the block 1 is divided into a large number of small-width flitches 1a, 1a, ... And adhered and fixed on each divided surface a, so that the block 1 is sliced by the cutting blade 2 of the slicer machine. At this time, the cutting blade 2 is sliced flat and evenly without rising from the slicing surface b, and has a normal thickness (for example, 0.2).
.About.0.4 mm), it is possible to prevent the formation of perforations and faint patterns.

This means that in a single flitch, which is wide during slicing and has a long length in the slicing direction, the cutting blade 2 is always lifted from the slicing surface as the slicing progresses, as indicated by the arrow in FIG. 2 (A). In contrast to the bending, in the combination block of a large number of small-width flitches 1a, as shown in FIG. 2 (B), even if a slight uplift occurs within a small slice distance of each flitch 1a, the cut surface (division It is presumed that the cutting blade 2 is restored downward from the bent state due to the flexibility of the adhesive in the adhesive layer interposed between the surface or the bonding surface) a. By the way, the width of the small width flitch 1a which can sufficiently expect these effects is not necessarily constant depending on the material, but is about 150.
When the width is 250 mm or less and the width is 250 to 300 mm, the frequency of puncturing or fading becomes considerably high. The lower limit of the width dimension may be 30 mm or less, but it is not necessary to make it smaller than that for ordinary wood grain and it is costly, so it can be avoided.

When slicing a single flitch 1'as shown in FIG. 2 (A), the inclination angle α of the spot 8 with respect to the normal slice surface b and the cutting direction of the cutting blade 2 is about 120 °.
When the above-mentioned inverse inclination is obtained, the probability that the spots on the veneer 7 are chipped and punctures or faint-like punctures becomes extremely high even in the case of horizontal slices. It was also clarified that, when divided into small-width flitches 1a, 1a, and laid sideways, the slice can be sliced without perforation up to the inverse inclination where the inclination angle α is about 150 °. This means that when harvesting the flitch 1 ', the allowable range of the inclination angle of the spot 8 with respect to the slice surface is 0 °.
It will be expanded up to about 150 °, which will increase the variety of wood removal and increase the effective utilization of wood.

Although the wood block formation by combining the narrow width flitches 1a and 1a has been performed in the conventional parquet blocks for wood tiles, etc., from a single small flitch having a short slice length and a small width. In the case of slicing a single veneer having a single wood grain pattern sideways, there was no problem of perforation or blurring itself, so there was no problem to prevent them. On the other hand, in the method of the present invention, even for a large-sized veneer, with a single grain pattern such as grain, trailing grain, and grain on the slice surface, the grain is used to slice. The biggest feature is that it makes it possible.

FIG. 3 shows a second embodiment of the present invention. In this example, a single wood material has a wood grain pattern on the surface (note: each of FIGS. 1 and 2 is a wood grain). In this way, the flitch that has been wood-cut is divided and cut into a large number of small-width flitches 1a, 1a ... And the adjoining cut surfaces a are bonded and fixed. The slope of the spot 8 is in the forward direction with respect to the slice direction. .

FIGS. 4 and 5 also show a third embodiment. In this example, as in FIGS. 1 and 2, the flitch before division and the sliced pattern b on the sliced surface b of the parquet block 1 have a grain pattern. In addition to showing a tree with a flitch, the narrow parcel block 1 has narrow narrow flitch 1a on both sides, and the two middle portions of the width in the slice direction are slightly wider than the narrow flitch 1a. 1b is shown.

In the above-mentioned structure, the most characteristicly appearing plate pattern in the center is divided into small pieces so as not to be broken as much as possible, whereas the left and right sides are almost conspicuous. Therefore, even if it is subdivided, the pattern collapse is not noticeable and the width is made small so that the above-mentioned hole-punching and blurring phenomenon can be more completely prevented. However, in the case of a particularly hard material, the small width flitch 1b, 1b at the center is also set to 1 in order to prevent the hole punching phenomenon.
It is preferably 50 mm or less. 1 to 2 show the effect of preventing perforation and blurring at the time of slicing in the embodiment shown in FIGS. 3 to 5 and that a sliced veneer of a single grain can be obtained from a large parquet flitch, and other effects. The same effect as the contents described for the above can be obtained.

The joint surface between the flitches of the parquet blocks 1 and 6 shown in the drawing is shown as a thick line in the drawing, but in the actual block and the sliced veneer 7, the joint surface (joint) is shown. It only appears as a very thin boundary line, and in particular, the joint surface of the narrow flitch 1a, 1a or the same 1b, 1b of the block 1 which is the subject of the present invention disappears to the extent that it is hardly recognized as a joint.

[0022]

The method of the present invention is constructed as described above, and a part or all of the flitch made of a single wood is divided into a plurality of small width flitch to be reconstructed into a parquet block. Even when slicing, the cutting blade of the slicer machine is prevented from rising during slicing, and the entire slice is sliced to a uniform thickness without causing holes or scratches.It is also necessary to increase the thickness of the sliced veneer. In addition, a low-cost veneer can be produced, and there is no need to increase the size of the machine for increasing the veneer thickness.

Further, since the above-mentioned parquet block is composed of a single material, it is possible to obtain a wide veneer having a single grain peculiar to a single material, and these parquet blocks can be used in a parquet for a large door. Incorporation into the above has the advantage that it is possible to slice a veneer containing a wide-area wood grain having a single grain, which has been impossible in the past.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a parquet block for obtaining a decorative veneer for a large door according to a first embodiment of the present invention.

2A and 2B are end views of a flitch made of a single material and a parquet block formed from the flitch.

FIG. 3 is an end view of a parquet block showing a second embodiment of the present invention.

FIG. 4 is an end view of a parquet block showing a third embodiment of the present invention.

FIG. 5 is a perspective view of a parquet block similarly showing a third embodiment.

[Explanation of symbols]

 1 Parquet block 1'Flitch 2 Cutting blade 3 Horizontal flitch 4 Vertical flitch 6 Parquet block 7 Veneer 8 Spots

Claims (4)

[Claims] 1. A horizontal flitch (1 ') for producing sliced veneer, which is made of a single hard wood having grain on its surface,
Cut into a plurality of small width flitches (1a) along the main fiber direction within the width of the abutting direction so as to be divided into widths substantially parallel to each other,
A method for manufacturing a parquet block for manufacturing a decorative veneer, wherein adjacent flitches of the narrow width flitch (1a) are integrally bonded and fixed together at an adjacent cut surface (a) to form a parquet block of a single wood. 2. The method for producing a parquet block for sliced veneer according to claim 1, wherein the surface grain of the flitch (1 ′) and the parquet block (1) is a single grain or a grain. 3. A horizontal flitch for producing a sliced veneer made of a single hard wood having grain on its surface in a long horizontal vertical flitch (4) and a short vertical horizontal flitch (3). (1 ') is cut so as to be divided into a plurality of narrow width flitches (1a) in a width substantially parallel to the main fiber direction within the width of the protruding direction, and adjacent flitches of the small width flitch (1a) are cut. A method for manufacturing a parquet block for a decorative veneer for a large door having a long length and a wide width, in which a parquet block (1) integrally bonded and fixed on an adjacent cut surface (a) is incorporated. 4. The parquet for decorative veneer according to claim 3, wherein the inclination direction of the mottles (8) of the vertical and horizontal flitches (3) is set to the normal direction of 0 ° or more with respect to the slice plane (b). Block manufacturing method.