JPS6054802A - Manufacture of veneer, defective joint section thereof is corrected - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is based on the process of repairing defective knots on the surface of wood by applying wood embedding treatment, and then cutting the repaired wood to a predetermined thickness. The present invention relates to a method for producing a veneer with high finishing accuracy extremely efficiently and at low cost, and in which defective knots in the veneer are corrected.

Veneers, which are used as constituent materials for plywood or laminated veneer materials, or are used for veneers of furniture, cabinets, architectural interior materials, etc., are manufactured, for example, by cutting logs with a four-tally lace knife. Therefore, if defects such as rows, rotten knots, and missing parts are present in the raw wood, the resulting veneer will have the defective knots as they are, which will significantly reduce the product value. Therefore, when producing veneers, logs with such defective knots are avoided as much as possible, which makes it difficult to use resources effectively.

If it is unavoidable to use logs with defective knots, the defective knots should be manually removed after the veneer is manufactured, and the removed parts should be filled with other similar materials. However, this method not only required a great deal of time and skill and was expensive to manufacture, but also had the disadvantage of a poor finish. It has also been attempted to apply putty treatment to the defective joints, but this has the disadvantage that not only does the finish look unnatural, but the putty tends to peel off.

The present invention can solve such problems in veneer manufacturing.
The purpose is to provide a method for producing a veneer in which defective knots have been corrected, and the feature is that holes with an appropriate depth are drilled at the defective knots exposed on the surface of the wood. After removing the defective joints and press-fitting and embedding a lumber made of raw material of the same quality as the wood into the hole, the repaired lumber is cut to a predetermined thickness. It is in.

An example of this will be explained below based on the drawings. First, it is necessary to remove defective knots (5) such as rows, rotten knots, and missing parts exposed on the surface (3) of the wood (2), which is raw wood (2a). A hole (6) is bored. The hole (6) is formed as a tapered hole having a diameter large enough to completely remove the annual rings of the defective knot (5). At that time, the drilling direction of the hole (6) should be set at the defective joint (
5) in the length direction. In addition, if the length direction of the defective knot (5) is unclear, the diameter of the hole (6) should be adjusted by adjusting the diameter of the hole (6) so that the defective knot (5) can be completely removed over its entire length. 2) The hole should be larger than the diameter of the outermost tree ring of the defective knot (5) appearing on the surface (3), and the hole (6) should be drilled in a direction approximately perpendicular to the longitudinal centerline of the wood (2). The hole (6) is preferably drilled using a tapered drill (7) as shown in FIG. 1, for example.

Next, a buried wood (9) having a tapered peripheral surface (9S) is press-fitted and embedded into the hole (6). The buried tree (9)
The outer diameter of each portion in the longitudinal direction of the hole (6) is slightly larger than the inner diameter of the corresponding portion of the hole (6). Therefore, when the embedded wood (9) is press-fitted into the hole (6), its peripheral surface (9S
) is embedded in close contact with the inner peripheral surface (6S) of the hole (6),
The buried wood (9) is completely integrated with the log (2a) throughout.

In addition, an adhesive may be interposed between the embedded wood (9) and the hole (6) as necessary, and in particular, an adhesive may be interposed between the embedded wood (9) and the hole (9S).
As shown in Figure 3 (,) (b), there are fine horizontal grooves (a).
), vertical grooves (b) are provided using vapor or the like, or
When providing a recess (Q) as shown in Figure (0),
ensuring the adhesion of the adhesive applied to the peripheral surface (9S);
Improves adhesive strength. In this embodiment, the hole (6) is particularly tapered, and the peripheral surface (9) of the buried wood (9) is
Since B) is finished in a tapered shape, the hole (6)
It is possible to press-fit the embedded wood (9) into the hole very easily. Furthermore, there is no risk that the buried wood (9) or the hole (6) will be damaged during the press-fitting.

As shown in Figures 4 and 5, the buried tree (9) is, for example, a tree species similar to the log (2a) (not limited to the same tree species, but includes tree species with similar physical properties such as expansion and contraction rate). branch material (
A columnar body @ is formed by punching out the center layer portion Qυ of a round cut material αQ obtained by cutting a round material (raw material) into rounds using a press device, and the peripheral surface of the rear-mounted columnar body @ is finished in a tapered shape. formed by. The press device has the circular cutting material α between a cylindrical blade α having a sharp blade at the tip and a pressing tool 06.
The center layer portion OD can be punched into the cylindrical blade 0 by sandwiching the center layer portion aυ of the cylindrical blade 0 and moving the pressing tool αQ forward toward the cylindrical blade Ql. Furthermore, the buried tree (
9), as shown in FIG. 6, a columnar body Q1 is formed by cutting a suitable place on the surface of a raw material H having the same quality as the raw wood (2a), for example, by rotating a rotary cutting blade αη shown in the same figure. After that, the peripheral surface of the columnar body q9 is finished into a tapered shape.

Thereafter, as shown in FIG. 7, the corrected raw wood (2a) is cut to a predetermined thickness with a rotary lace knife (e) to obtain a veneer wood with defective knots corrected. As mentioned above, the buried wood (9) is completely integrated with the raw wood (2a), so when cutting, the buried wood (9) is completely integrated with the raw wood (2a).
9) is unlikely to fall off.

Therefore, in the obtained veneer Qυ, as shown in Fig. 7, the peripheral surface (22
The inner peripheral surface (6S) of the hole (6) is in complete contact with the entire surface, and there is a gap between the hole (6S) and the wood filler on the front and back surfaces of the veneer Qη. The finishing accuracy is excellent without causing any problems.Furthermore, since the tapered wood insert (A) is press-fitted and embedded in the tapered hole (6), and the wood insert (9) is Since it is of the same quality as the raw wood (2a) and there is almost no difference in the degree of expansion and contraction between the two, there is no risk that the buried wood piece (a) will fall off or come up.

As described above, the manufacturing method of the present invention is configured such that defective knots on the surface of the wood are repaired by applying wood filling treatment, and then the repaired wood is cut to a predetermined thickness, so that the defective knots are repaired. It is possible to manufacture veneers with high finish accuracy extremely efficiently and at low cost. This makes it possible to utilize wood that has not been used in the past due to the presence of defective knots, which also greatly contributes to resource conservation.

In the manufacturing method of the present invention, the wood (2) is a flitch (2b) cut into a square lumber as shown in FIG.
Alternatively, the flitch (2b) is planed to a predetermined thickness using a knife of a slicer to obtain a veneer ■υ. Further, as shown in Fig. 10, the embedded wood (9) may be formed in a cylindrical shape.1 The embedded wood (9) is press-fitted into a circular hole (6) drilled in the wood (2). , the defective knot portion of tree 0(2) may be corrected by embedding. In this case, adhesive can be applied to the circumferential surface (9S) of the buried tree (9) in advance, and in this case, the circumferential surface (9S)
It is preferable to provide narrow horizontal grooves, vertical grooves, or recesses in the same manner as shown in FIGS. 3(a) and 3(b).

In order to facilitate press-fitting of the embedded wood (9), it is preferable to chamfer (c) the lower end thereof.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the process of removing defective knots in the wood and press-fitting the lumber into the hole, and Figure 2 is a sectional view showing the state in which the lumber is press-fitted and embedded into the hole drilled in the wood. , Figure 3(a)~
(C) is a perspective view illustrating a buried lumber, FIG. 4 is a perspective view illustrating a circular cut timber, and FIG. 5 is an explanatory diagram showing a method of hammering the center layer of the circular timber to form a columnar body. Figure 6 is a perspective view showing the method of cutting the raw wood to form a columnar body, Figure 7 is a perspective view showing the process of cutting the modified raw wood to produce veneer, and Figure 8 is the modified process. A cross-sectional view showing the veneer, Fig. 9 is a side view showing the process of manufacturing the veneer by cutting the flitch, and Fig. 10 shows the state in which cylindrical wood is embedded in the hole of the wood by pressing. FIG. (2)--Irrigation, (5)'...Bad joints, (6)...
Hole, (9)... buried wood. Patent Applicant Yasuki Inoue Representative Patent Attorney Kiyoichi Okamoto Figure 3 (a) Figure 3 (c) Figure 3 (b) Figure 4 11 (,) Figure 5 - Figure 9 Figure 10 Procedure corrector (spontaneous) 1 Indication of the case 1981 Patent Application No. 164708 2 Title of the invention Method for manufacturing veneer with defective parts corrected 3 Person making the amendment Relationship with the case Patent applicant 4 representative Address: Fukui City Ote 8-7-1 Senkyo Building (1) Akira
1 copy of the details (2) Amended "Application" 1 copy (3) Amended "Request for application examination" 1 Appropriate details 10 Name of the invention Method for manufacturing veneer with corrected defective parts 2, Patent Scope of Claims (1) The defective portions exposed on the surface of the wood are removed by drilling holes with an appropriate depth in the defective portions, and the raw material of the same quality as the wood is removed in the perforated portions. 1. A method for producing a veneer with repaired defective parts, which comprises: press-fitting and embedding a wood embedding formed using a wood veneer, and then cutting the repaired wood to a predetermined thickness. 3. Detailed Description of the Invention The present invention is based on the process of repairing defective parts on the surface of wood by applying wood embedding treatment, and then cutting the corrected wood to a predetermined thickness. The present invention relates to a method for manufacturing a veneer with defective parts corrected, which allows veneers with high finish accuracy to be manufactured extremely efficiently and at low cost. Veneers, which are used as constituent materials for plywood or laminate board materials, or for decorative veneers of furniture, cabinets, building interior materials, etc., are produced, for example, by cutting raw wood with a knife such as a four-tally lace. Therefore, if there are defective parts such as rows, rotten knots, and hollow parts in the raw wood, the defective parts will remain in the obtained veneer, which will significantly reduce the product value. Therefore, when producing veneers, logs with such defective parts are avoided as much as possible, which is inefficient in the effective use of resources. In addition, if it is unavoidable to use raw wood 2 in which such a defective part exists, after producing the veneer, the defective part should be manually removed and other similar features should be embedded in the removed part. However, this method not only required a great deal of time and skill and was expensive to manufacture, but also had the disadvantage of a poor finish. It has also been attempted to apply putty treatment to the defective areas, but this has the disadvantage that not only does the finish look unnatural, but the putty tends to peel off. The present invention solves these problems in veneer manufacturing.
The purpose is to provide a method for manufacturing veneers with defective parts corrected.
The feature of this method is that the defective parts exposed on the surface of the wood are removed by drilling holes with an appropriate depth into the defective parts, and then a raw material of the same quality as the wood is inserted into the holes. After press-fitting and embedding the lumber formed using the wood, the modified lumber is cut to a predetermined thickness. An example of this will be explained below based on the drawings. First, the defective parts (5) exposed on the surface (3) of the wood (2), which is raw wood (2a), are the base, the bottom tube, the cutout, Drill holes (6 holes) in areas where there are insect bites, crab pots, various types of cranks, and sometimes even living parts with a large diameter that may cause problems in cutting. (6) is the defective part (
5) is formed, for example, as a tapered hole having a diameter sufficient to completely remove the hole. At this time, the direction in which the holes (6) are drilled is the length direction (intrusion direction into the wood) of the defective part (5) such as the root part. If the length direction of the defective part (5) is unclear, the diameter of the hole (6) should be adjusted so that the defective part (5) can be completely removed over its entire length. )
The hole (6) should be larger than the diameter of the outermost tree ring of the defective part (5) on the surface (3), and the hole (6) should be
) is preferably perforated in a direction substantially perpendicular to the longitudinal centerline of the hole. The hole (6) is drilled using, for example, a tapered drill (7) as shown in FIG. Next, a buried wood (9) whose circumferential surface (9S) is finished in a tapered shape is press-fitted and embedded into the hole (6). The buried tree (9)
The outer diameter of each portion in the longitudinal direction of the hole (6) is slightly larger than the inner diameter of the corresponding portion of the hole (6). Therefore, when the embedded wood (9) is press-fitted into the entire hole (6), its peripheral surface (9S)
is embedded in close contact with the inner circumferential surface (6S) of the hole (6), and the embedded wood (9) is completely integrated with the log (2a) over the entirety. In addition, an adhesive may be interposed between the wood (9) and the hole (6) as necessary, especially the surrounding surface (9) of the embedded wood (9).
S) has fine horizontal grooves (
a) If the vertical grooves (b) are provided using paper or the like, or if the recesses (0) are provided as shown in Figure 3 (0), 1. It is applied to the peripheral surface (9S). Ensures adhesive attachment and improves adhesive strength. In this example,
In particular, since the hole (6) is tapered and the peripheral surface (9S) of the insert (9) is finished in a tapered shape, the insert (9) can be pressed into the hole (6) extremely easily. be able to. Moreover, there is no risk of damage to the buried wood (9) or the hole (6) during the press-fitting. As shown in Figures 4 and 5, the buried tree (9) is, for example, a tree species similar to the log (2a) (not limited to the same tree species, but includes tree species with similar physical properties such as expansion and contraction rate). branch material (
The center layer part 0] of the round cut material 00 made by cutting the raw material) into rounds 0])
A columnar body (6) is formed by punching it using a press machine, and the circumferential surface of the diffused columnar body (6) is finished into a tapered shape. The press device sandwiches the center layer portion 0] of the circular cut material between a cylindrical blade (g) with a sharp blade at the tip and Q pressing tools, and presses the pressing tool (
By advancing 1 dollar toward the cylindrical blade α, the center layer portion 01) can be punched into the cylindrical blade a3. Furthermore, as shown in FIG. 6, the embedded wood (9) is cut at a suitable place on the surface of the raw material QfD of the same quality as the raw wood (2a) by rotating the rotary cutting blade αη shown in the same figure, for example,
After forming the columnar body 01, the peripheral surface of the columnar body 01 is finished into a tapered shape. Thereafter, as shown in Figure @7, the corrected raw wood (2a) is cut to a predetermined thickness with a rotary lace knife to obtain a veneer Qυ with defective parts corrected. As mentioned above, the buried wood (9) is completely integrated with the raw wood (2a), so when cutting, the buried wood (9)
There is no risk of it falling off. Therefore, in the obtained veneer ψυ, as shown in Fig. 7, the peripheral surface (22
8) and the inner circumferential surface (68) of the hole (6) are in complete contact with each other over their entire surface, and there is no space between the wood filler (a) and the hole (6) on the front and back surfaces of the veneer Qυ. There are no gaps and the finishing accuracy is excellent. Moreover, the tapered hole (6) has a hole (6).
- Because the wood piece (a) in the shape of a hole is press-fitted and embedded, and the wood piece (9) is of the same quality as the raw wood (2a), there is no degree of expansion or contraction between them. Since there is almost no difference between the two, there is no risk that the buried wood piece (a) will fall off or come up. As described above, the manufacturing method of the present invention corrects defective areas on the surface of wood by applying wood embedding treatment, and then cuts the corrected wood to a predetermined thickness. As a result, the defective areas are corrected and the finished product has good precision. Veneers can be manufactured extremely efficiently and at low cost. This makes it possible to utilize wood that has not been used in the past due to the presence of defective parts, which also greatly contributes to resource conservation. In the manufacturing method of the present invention, the wood (2) is a flitch (2b) cut into a square lumber as shown in FIG.
A single plate is obtained by planing to a predetermined thickness using a knife such as the flitch (2b) i-swicer. Further, as shown in Figure @10, the buried tree (9) may be formed in a cylindrical shape, and the buried tree (9) is connected to a circular hole (6) bored in the water pipe (2).
Defective portions of the aqueous phase (2) may be corrected by press-fitting or embedding the aqueous phase (2) into the aqueous phase (2). In addition, it is also possible to apply adhesive to the circumferential surface (98) of the buried tree (9) in advance, in which case the circumferential surface (9S)
It is preferable to provide fine horizontal grooves, vertical grooves, or recesses in the same manner as shown in FIG. 8 (&) (b). Further, in order to facilitate press-fitting of the buried wood (9), it is preferable to chamfer (c) the lower end thereof. 4. Brief explanation of the drawings Figure 1 is a perspective view showing the process of removing defective parts of the wood and press-fitting the filler into the hole. Figure 2 is the process of press-fitting the filler into the hole drilled in the wood and attaching the rope. A cross-sectional view showing the state of
) is a perspective view illustrating a buried lumber, FIG. 4 is a perspective view illustrating a round cut piece of wood, FIG. 5 is an explanatory diagram showing a method of punching out the center layer of the round cut piece to form a columnar body, and FIG. A perspective view showing a method of cutting raw wood to form a columnar body, FIG. 7 is a perspective view showing a process of cutting a modified raw wood to produce a veneer, f'8
Figure 8 is a cross-sectional view showing the modified veneer, Figure 9 is a side view showing the process of cutting the flitch to manufacture a single furnace, and Figure 10 is press-fitting a cylindrical insert into the hole of the wood. FIG. 3 is a sectional view showing an embedded state. (2) - Good wood, (5) Defective part, (6)...
・Hole, (9)... buried wood. Patent applicant Kiyoshi Inoue Yasuyoshi Patent attorney Kiyokazu Okamoto

Claims (1)

[Claims] (1) Remove the defective knots by drilling a hole with an appropriate depth at the location of the defective knot exposed on the surface of the wood, and fill the hole with raw material of the same quality as the above-mentioned wood. 1. A method for manufacturing a veneer with repaired defective knots, which comprises: press-fitting and embedding a wood embedding formed by the method, and then cutting the repaired wood to a predetermined thickness.