JPH06285817A - Manufacture of overlay veneer - Google Patents

Abstract

PURPOSE:To manufacture overlay veneer having neither holes nor broken area out of flitch made of hard wood having speckles by slicing. CONSTITUTION:At the longitudinal slicing of hard wood flitch 6 having speckles 3 or of longitudinally sliced flitch of parqueted flitch along fiber direction, the slicing is carried out in the right way under the condition that the angle between the direction of approach of the cutting edge 7 of a slicer and the inclination angle theta2 of fiber seen from the side of the flitch is 0 deg. or more.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a method for producing a cosmetic veneer sliced from a flitch made of prismatic wood formed for slicing in order to produce a cosmetic veneer.

[0002]

2. Description of the Related Art Conventionally, a method for slicing a flitch to manufacture a veneer for makeup is generally performed by slicing with a slicer machine in a direction intersecting with the main fiber direction of wood (tree growth direction) and the main fiber direction. Vertical slices are known to be sliced along. In order to prevent a partial inversion of the flitch in the fiber direction in the case of vertical staking, a special wood removing method for obtaining a flitch is proposed as shown in JP-B-55-43884, and a vertical flitch is also provided. Techniques such as Japanese Patent Publication No. 54-18322 and Japanese Patent Publication No. 55-43883 are known as a method for slicing a veneered veneer.

[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 the most effective method for most wood used for veneer for makeup.

However, for example, oak wood, oak wood, oak wood, etc. are relatively hard, and as shown in FIG. 1, spots appearing in a radial pattern on the annual ring 2 in the cross section of the log 1 ( F) 3, wood that has a special cell tissue (hereinafter referred to as "plaque") called ginmoku or broad-cord wire,
A portion where the spot 3 intersects with the slice surface, particularly a portion of the tiger spot 3a that overlaps in a relatively large spot or a striped pattern is largely cut off to form a hole in the slice veneer, which is used as a veneer for makeup. There is a problem that you cannot do it.

That is, in FIG. 1, the wood harvesting of the raw wood 1 is roughly divided into a regular conquest A, a supplementary conquest B, and a planing C. Since the spots 3 and the sliced surface are orthogonal to each other in the plate-cutting C, the spots 3 are generally along the fiber direction of the wood or are inclined in that direction and appear as fine fibrous cut lines. Moreover, in the right-hand conquest A, along the radiation of the spot 3,
Alternatively, since it intersects with radiation at an extremely small acute angle, it appears as a striped tiger spot 3a, which is unfavorable in appearance. Therefore, in the case of slicing a veneer veneer of these woods, when conquest is desired, in general, the tiger spot 3a is difficult to appear and the conquest is performed.

However, when the flitch is sliced with a slicer machine to obtain a decorative veneer as described above,
Even if the slicing direction and angle are set in consideration of only the fiber direction of wood (flitch) as in the above-described conventional technique, the spots 3 cause defective cutting, resulting in punctures in the sliced veneer. There is a problem that it cannot be avoided.
This tendency is particularly strong with a wide long member, and for example, a decorative veneer for a door that has been parquet-shaped in a frame shape is difficult to slice, and at the same time, there is at least partial occurrence of the perforation in the finished product. It is unavoidable, and as a result, it has been impossible to slice a decorative veneer for large doors in a single step.

In order to solve these problems, the present inventor intends to slice hard and uneven wood such as oak wood, oak wood, oak wood, etc. into a single plate without vertical holes by vertical cutting. , It is more direct that the angle of approach of the cutting blade of the slicer machine to the flitch is normal or inverse to the slope of the spot, rather than the normal to the fiber direction and other slicing conditions. It was found by many experimental results that slicing in the forward direction with respect to the inclination of the spot prevents puncture in the spot portion, and slicing in the reverse direction causes pitting. At the same time, it was also found that if these hard woods are sliced in the normal direction with respect to the spots, normal slicing is possible even if there is an adverse phenomenon in the fiber direction. The present invention is based on the above finding and provides a method for manufacturing a cosmetic veneer that solves the above-mentioned problems in vertical flitching with spots.

[0008]

A first feature of the present invention is to cut a hard wood having spots 3 into a columnar shape to form a flitch 6
In the method for manufacturing the sliced veneer 8 by forming the flitch 6 and vertically slicing the flitch 6 with a slicer machine, the inclination angle θ ₂ when the cutting blade 7 of the slicer machine enters the flitch 6 The feature is that the forward direction is 0 ° or more with respect to the inclination of the spot 3. The second feature of the present invention is to form a frame-like or block-like parquet flitch 9 composed of vertical flitch 6b and horizontal flitch 6a by combining a plurality of flitches 6 so that the fiber directions cross each other vertically and horizontally. In the method for producing a parquet veneer 12 by slicing the parquet flitch 9 with a slicer machine, the vertical flitch 6
The inclination angle θ ² when the cutting blade 7 of the slicer machine is approaching b is set to 0 with respect to the inclination of the spots 3 in the flitch 6b.
It is characterized in that it is in the forward direction of more than °.

[0009]

When the cutting blade 7 moves relative to the flitch 6 or parquet flitch 9 during slicing, the inclination angle θ between the spot 3 of the flitch 6 and the advancing direction of the cutting blade 7 in a side view.
_{Since 2} has a normal direction of 0 ° or more, the spots 3 on the slice surfaces in the flitches 6 and 9 are surely cut like the other parts without escaping from the cutting blade 7, and the slice single The plate 8 or 12 is formed without forming a hole in the spot 3 or a defective portion.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The embodiment shown in FIG.
Shows a state in which the flitch 6 is sliced by the cutting blade 7 of the slicer machine, but in an actual slicer machine, the normal cutting blade 7 is fixed to the lower side, and the flitch chucked upward is cut against the cutting blade 7. Slicing is performed by making a straight line with an inclination angle θ ₁ , and the entry of the cutting blade 7 means the relative movement of the flitch and the cutting blade during the cutting operation.

In this example, the slicing surface a of the flitch 6 is conquered, and the annual rings 2 and the fiber directions appear in the longitudinal direction substantially parallel to each other, and the spots 3 appear as elongated fibrous shapes with an inclination angle in the main fiber direction. There is.

On the other hand, on one side of the side surface b which is perpendicular to the slice surface a, the unevenness 3 forms an inclination angle θ ₂ so that the cutting blade 7 side descends with respect to the slice surface and rises in the approach direction 5. is doing. And in the illustrated example, the cutting blade 7
Of the cutting blade 7 as it enters along the slice surface a.
Is equal to the inclination angle θ ₂ of the spot 3 on the side surface b perpendicular to the slice surface a. By the way, since the inclination angle of the spots 3 with respect to the main fiber direction of the wood is approximately + and -10 °, the inclination angle θ ₂ does not greatly exceed 10 °.

By setting the approach angle θ ₂ of the cutting blade 7 and slicing as described above, the same spots as the spots 3 on the side of the flitch 6 are left on the sliced decorative veneer 8 as it is, and holes are punched. Is formed without causing.

In FIG. 3, the annual ring 2 and the fiber direction are curved in a chevron shape on the side surface b in the flitch 6, and the front and rear sides thereof form the forward stitch portion (a) and the reverse stitch portion (b) with respect to the entering direction of the cutting blade 7. In this case, if the inclination angle θ ₂ of the cutting unevenness 7 with respect to the unevenness 3 in the approach direction is 0 ° or more, the fiber direction is partially (or entirely). There is no particular problem with the result of slicing the veneer 8 even if the barb is gradual.

FIG. 4 shows a slicing method of a frame-shaped parquet flitch 9 to which the above flitch slicing method is applied. 6b is vertically inserted and adhesively fixed, and a scrap material 11 made of a soft material such as lauan material is adhesively fixed in a fitted state inside the frame shape. In this case, the vertical flitch 6b is Spot 3 in the cross section
The wood cutting and the arrangement are configured so that the inclination angle θ ₂ with respect to the slice direction is inclined in the forward direction. 12 is a sliced veneer veneer.

FIG. 5 is for a wooden crow door in which the parquet flitch 9 is wide and long, for example, the slice surface has a width of 740 mm and a length of 1950 mm. Then, it is attached to the surface of the door frame, which has substantially the same shape as the single plate. In this example, a large number of horizontal flitches 6a are arranged between the left and right long vertical flitches 6b, 6b at predetermined intervals, and a short vertical flitch 6c is vertically provided between each horizontal flitch 6a, 6a. The waste material 11 is integrally interposed and fixed in the space formed between the respective flitches 6a to 6c. It is also possible to incorporate a flitch for makeup instead of the waste material 11 and form it for doors other than the glass door in which the whole sliced surface is a veneer for makeup.

In this example, vertical flitch 9b, 9c
The inclination angle of the unevenness appearing on the side surface of the cutting edge 7 is inclined so as to form an order of 0 ° or more with respect to the entering direction of the cutting blade 7. In addition, when slicing these veneer for makeup, the moisture content of the flitch, the selection of the adhesive for the parquet, etc. are all well known conditions, and in order to obtain a veneer with a better finish, the fiber direction of the flitch should be adjusted. Needless to say, it is preferable to satisfy the other conditions such as the normal direction. In order to satisfy the above cutting conditions, when slicing the flitch from the wood removing stage as much as possible, a forward inclination of 0 ° or more with respect to the uneven slice surface (the cutting blade approaching direction). It is desirable to cut to make an angle θ ₂ .

[0018]

According to the present invention constructed as described above, it is difficult or impossible to slice a veneer-free cosmetic veneer without piercing from hard wood such as oak, oak, oak, etc. In contrast to the conventional method that was possible, the angle of approach of the cutting blade with respect to the inclination of the spots in the flitch or the inclination angle of the spots with respect to the approach direction (or the slice surface) is inclined in the forward direction, thereby making holes or missing parts. There is an advantage that it is possible to slice a decorative veneer without the above, and it is also possible to slice a veneered veneer veneer veneer such as a wide and long single material flitch or a parquet flitch such as a large door frame, which has been particularly difficult in the past.

As a result, even a veneer veneer for doors, which has been conventionally pasted by hand for each part, can be entirely pasted with one veneer veneer at a time, so a high level of skill is required for pasting. In other words, it has a great effect in terms of efficiency of the sticking work, cost reduction, and good appearance of the finished surface.
In addition, it is possible to slice the veneered veneer that is not designed for glass doors by designing the entire surface of veneer veneer for doors, which has been difficult in the past due to cost and technical difficulties even by manual work, and can be realized at low cost. There is.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a basic method for removing wood from a raw tree and how unevenness of each cross section appears.

FIG. 2 is an explanatory perspective view showing the basics of a flitch slicing method.

FIG. 3 is a sliced state sectional view in the case where the fiber direction also has an order and an inversion with respect to the slice direction.

FIG. 4 is an explanatory perspective view showing a sliced state of a parquet flitch.

FIG. 5 is a plan view of a parquet flitch for obtaining a decorative veneer for a door frame.

[Explanation of symbols]

3 spots 6 flitch 6a horizontal flitch 6b, 6c vertical flitch 7 cutting blade 8 slice veneer 9 parquet flitch θ ₂ tilt angle

Claims (2)

[Claims] 1. A flitch (6) is formed by cutting a hard wood having spots (3) into a pillar shape, and the flitch (6) is formed.
In a method for manufacturing a veneer for makeup (8) by vertically slicing a slicer machine and slicing, a tilt angle (θ ₂ ) when a cutting blade (7) of the slicer machine enters a flitch (6) is flitched. (6) A method for producing a cosmetic veneer, wherein the angle in the normal direction is 0 ° or more with respect to the inclination of the spots (3) in the inside. 2. A vertical flitch (6b) comprising a combination of a plurality of flitches (6) so that the fiber directions cross each other vertically and horizontally.
A method for producing a parquet veneer (12) by forming a frame-shaped or block-shaped parquet flitch (9) composed of a horizontal flitch (6a) and slicing the parquet flitch (9) with a slicer machine. The tilt angle (θ ² ) when the cutting blade (7) of the slicer machine enters the vertical flitch (6b) is set to the vertical flitch (6).
b) A method for producing a veneer for makeup, wherein the angle in the forward direction is 0 ° or more with respect to the inclination of the spots (3) in the interior.