JP4332209B2 - Veneer veneer tender rising method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tender rising device for a veneer single plate (hereinafter referred to as a single plate).
[0002]
[Prior art]
Conventionally, in order to reduce warpage due to drying of a veneer or to improve the yield by extending in a direction perpendicular to the fibers of the veneer, cutting is performed in the fiber direction of the veneer by a blade-like protrusion provided around the roll. For example, many cutter-type tenderizers described in Japanese Utility Model Publication No. 59-5521 have been proposed as the forming apparatus.
[0003]
[Problems to be Solved by the Invention]
However, in the apparatus as described above, it was not possible to greatly extend the yield in the direction perpendicular to the fibers of the single plate by simply inserting the single plate once.
Of course, if the same device is inserted twice or more times, the elongation in that direction increases, but it is not sufficient.
[0004]
[Means for Solving the Problems]
In order to solve these problems, the present invention forms, as a method, a large number of first notches having a predetermined length in the fiber direction of the veneer at predetermined intervals in the fiber direction and in a direction perpendicular to the fiber direction by the protrusions. Then, the interval in the direction orthogonal to the fiber direction with respect to the first cut is 4 mm or less, and at a location between the two first cuts adjacent in the fiber direction when viewed from the direction orthogonal to the fiber direction. A second cut continuous in the fiber direction is formed.
Further, a plurality of first cuts having a predetermined length in the fiber direction of the veneer are formed by the protrusions at predetermined intervals in the fiber direction and the direction orthogonal to the fiber direction, and then orthogonal to the fiber direction with respect to the first cut. A second notch having a distance of 4 mm or less and continuous in the fiber direction with a length overlapping with at least one of the two first notches adjacent in the fiber direction as viewed from the direction orthogonal to the fiber direction. May be formed.
In these methods, the single plate may be an undried single plate.
Further, it is more effective that the single plate has a thickness of 6 mm or less.
[0005]
As a device, the peripheral surface of one roll is provided with a number of protrusions protruding in the radial direction and continuing for a predetermined length in the rotational direction at intervals in the rotational direction and the axial center line direction, and the other roll has a smooth peripheral surface. And a pair of rotatable first roll groups that are arranged such that at least one of the rolls is rotationally driven, and the circumferential surface of one of the rolls is radially arranged. A plurality of protrusions protruding and continuing for a predetermined length in the rotation direction are provided at intervals in the rotation direction and the axial center line direction, and the other roll has a smooth circumferential surface and is arranged with the axial center line direction parallel to each other, at least A pair of freely rotatable second roll groups to which any one roll is driven to rotate are provided at a predetermined interval, and the position of the protrusion with respect to one roll of the first roll group, one of the second roll group Roll bump The position of the part, and the predetermined interval between the first roll group and the second roll group, with respect to the first notch formed by the protrusion on the single plate inserted parallel to the fiber direction in the first roll group, A second cut that is 4 mm or less in the direction orthogonal to the fiber direction and that is continuous in the fiber direction at a location between two first cuts adjacent in the fiber direction when viewed from the direction orthogonal to the fiber direction. Each of them may be set and configured so as to be formed.
In the above apparatus, the protrusion provided on the peripheral surface of one of the first roll group and the second roll group has a tip angle of 60 degrees or less in a cross section perpendicular to the rotation direction of the roll. Furthermore, when the roll is viewed from the axial centerline direction, the angle formed by the inclined surfaces facing each other in the axial centerline direction of the roll is 70 degrees or more. It is more effective when a large number of V-shaped or U-shaped notches are formed in the rotational direction.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described by way of examples.
FIG. 1 is an explanatory side view of the first embodiment, FIG. 2 is an explanatory front view of the direction of the arrow as viewed from an alternate long and short dash line AA without a conveyor 33 described later in FIG. 1, and FIG. FIG. 4 is a front explanatory view of the direction of the arrow viewed from the alternate long and short dash line B-B in FIG. 1 with the chain 22 and the motor M removed, and FIG. 4 is a first protrusion 13 described later in a portion surrounded by an ellipse S in FIG. 5 is an enlarged explanatory view for explaining the process of machining, FIG. 5 is an enlarged explanatory view in the direction of the arrow from the alternate long and short dash line CC in FIG. 4, and FIG. 6 is an enlarged explanatory view of a portion surrounded by an ellipse S in FIG. 7 is a cross-sectional explanatory view as seen from the direction of the arrow from the one-dot chain line DD in FIG. 6, FIG. 8 is a cross-sectional explanatory view as seen from the one-dot and dash line EE in FIG. 7 is a partial cross-sectional explanatory view as viewed in the direction of the arrow from an alternate long and short dash line F-F. FIG. 10 is an additional portion of a second protrusion 27 described later in a portion surrounded by an ellipse T in FIG. 11 is an enlarged explanatory diagram for explaining the process of FIG. 11, FIG. 11 is an enlarged explanatory diagram of a portion surrounded by an ellipse T in FIG. 3, and FIG. 12 is an enlarged explanatory diagram in which the direction of the arrow is viewed from the one-dot chain line GG in FIG. 13 is an enlarged explanatory view of the main part of FIG. 1, FIGS. 14 and 15 are partial plan explanatory views showing the state of the cut formed in the single plate, and FIG. 16 is an enlarged explanatory view of the main part of FIG. .
[0007]
In FIG. 1, reference numeral 1 denotes a roll rotatably provided on a machine frame (not shown), which is configured as follows. That is, as will be described later, the rotation of the motor M is transmitted by the chain 22, and the steel base 3 is rotated in the direction of the arrow. The width in the axial center line direction is 203mm and the inner diameter is the outer diameter of the base 3. And a plurality of first cylindrical members 5a, 5b,... Which are made of steel and have an outer diameter (diameter of a virtual circle drawn by the tip 13a of the first protrusion 13 described later) of 198 mm. It is mounted and fixed by the key 7.
The first protrusions 13 are arranged on the outer circumferences of the first cylindrical members 5a, 5b,... And are continuous with a predetermined length in the rotation direction of the roll 1, as shown in FIG. Many are provided at predetermined intervals in the direction and the rotational direction.
[0008]
These first protrusions 13 are processed and formed as follows.
First, as shown in FIG. 4 which is an enlarged view inside the ellipse S of FIG. 2 and shows a state where the processing of the first protrusion 13 has not been completed, the outer periphery of the first cylindrical members 5a, 5b,. The height L1 = 3 from the circumferential surface 11 in the radial direction to the tip 9c as shown in FIG. 5 is a cross-sectional view viewed in the direction of the arrow from the alternate long and short dash line C-C. The continuous protrusions 9 that are approximately isosceles triangles having an apex angle θ1 = 40 degrees at 0.5 mm are formed at the following positions.
That is, in FIG. 4, the first continuation of the first cylindrical member 5a is at a position of L2 = 3.5 mm on the left side in the axial center line direction of the roll 1 from the edge XX where the first cylindrical members 5a and 5b contact each other. There is a tip 9a of the projection 9, and the tip 9a of the continuous projection 9 in each row is formed at intervals of L3 = 7 mm on the left side of the tip 9a.
Since the width of the first cylindrical member 5a in the axial center line direction is 203 mm as described above, 29 continuous protrusions 9 provided at intervals of L3 = 7 mm are formed in total.
As a result, the end of the first cylindrical member 5a opposite to the end XX in the axial center line direction is a continuous projection similar to the end XX side of the first cylindrical member 5b shown in FIG. And the center of the continuous protrusion 9 in the axial center line direction is at the position of L4 = 3.5 mm on the right side in the axial center line direction of the roll 1 from the edge XX, and L2 + L4 = 7 mm Thus, the intervals in the axial center line direction of the roll 1 of the continuous protrusions 9 formed on the outer circumferences of the first cylindrical members 5a, 5b,... Are all 7 mm.
[0009]
As described above, the continuous protrusions 9 formed on the outer circumferences of the first cylindrical members 5a, 5b,... Are further processed as follows.
That is, in the rotation direction of the roll 1, the length of the continuous protrusion 9 is 28 mm, the smooth peripheral surface is 32 mm, and the length of the continuous protrusion 9 is 28 mm. For example, in FIG. 4, in the two-dot chain lines Y1-Y1, Y2-Y2, and Y3-Y3, the interval between Y1-Y1 and Y2-Y2 is 32 mm, and Y2-Y2 and Y3-Y3. Is 28 mm, the continuous protrusion 9 is scraped from one end to the other end in parallel with the axial center line direction of the roll 1 between Y1-Y1 and Y2-Y2, and the circumferential surface 11 in the radial direction of the roll 1 A smooth peripheral surface with the same position.
Next, a cutter (not shown) having a tip angle of 80 degrees is moved in parallel with the axial center line direction of the roll 1 to each continuous protrusion 9 having a length in the rotational direction of 28 mm to obtain a depth from the tip 9a. The notches 13b are formed by scraping at 0.8 mm, and many notches 13b are formed at intervals of 1.3 mm in the rotation direction of the roll 1.
[0010]
By forming as described above, the continuous protrusion 9 shown in FIG. 4 becomes the first protrusion 13 as shown in FIG. 6, L5 = 28 mm, L6 = 32 mm, and the circumferential length is about 600 mm. The ten first protrusions 13 are formed at 60 mm intervals in the rotation direction of the roll 1 on each peripheral surface 11 of the first cylindrical members 5a, 5b,.
Further, as shown in FIG. 7 which is an enlarged explanatory view of the direction of the arrow viewed from the alternate long and short dash line DD in FIG. 6, the height L7 from the peripheral surface 11 to the tip 13a is 3.5 mm, and the bottom from the tip 13a. A number of notches 13b having a depth L8 up to 13c of L8 = 0.8 mm, an interval L9 = 1.3 mm between adjacent tips 13a, and θ2 = 80 degrees are formed in the rotation direction of the roll 1.
Furthermore, the shape of these first protrusions 13 in FIG. 7 is as follows.
FIG. 8 is an explanatory cross-sectional view as seen from the direction of the arrow along the dashed-dotted line EE in FIG. 7, and FIG. 9 is an explanatory view of the cross-section as seen from the direction of the arrow from the dashed-dotted line FF in FIG. It has become.
[0011]
Reference numeral 15 denotes a steel roll having a smooth peripheral surface and a diameter of 198 mm. The roll 1 and the axial center line are parallel to each other, and the distance between the tip of the first protrusion 13 provided on the roll 1 and the peripheral surface of the roll 15. Are arranged relative to each other in a positional relationship of about 0.5 mm.
Further, gears (not shown) having the same diameter are fixed to one end in the axial center line direction of the base 3 of the roll 1 and the roll 15 so as to mesh with each other, and the rotation of the roll 1 is caused by the rotation of the gear 1. It is configured to be transmitted to the roll 15 through and rotated at the same peripheral speed.
[0012]
On the other hand, 17 is parallel to the roll 1 and the axial center line direction, and the distance between the axial centers of the rolls 1 and 17, that is, the two-dot chain line KK and the two-dot chain line NN in FIG. It is a steel roll that is rotatably supported by a machine frame (not shown) so that the interval is 300 mm, and is configured as follows. That is, as shown in FIG. 3, similarly to the roll 1, the steel base 19 has a width in the axial center line direction of 203 mm, the inner diameter is almost equal to the outer diameter of the base 19, and the outer diameter is 198 mm. A large number of second cylindrical members 21a, 21b,... Made of steel are mounted in close contact with each other and fixed by a key 23.
A continuous projection 25 having the same shape as the continuous projection 9 formed on the first cylindrical members 5a, 5b,... Is formed on the outer periphery of the second cylindrical members 21a, 21b,. As in the case of FIG. 4, it is formed as shown in FIG. 10, which shows a state in which the processing as the second protrusion, which will be described later, has not been completed.
That is, in FIG. 10, the first continuous of the second cylindrical member 21a is located at a position of L10 = 1.5 mm on the left side in the axial center line direction of the roll 17 from the edge ZZ where the second cylindrical members 21a and 21b contact each other. There is a tip 25a of the protrusion 25, and the tip 25a of each row of the continuous protrusion 25 is positioned at intervals of L2 = 7 mm on the left side from the position of the tip 25a. In addition, a total of 29 continuous protrusions 25 are formed on the second cylindrical member 21a, and the edge opposite to the edge ZZ in the axial center line direction of the second cylindrical member 21a is shown in FIG. It becomes the positional relationship of the continuous projection part 25 similar to the edge ZZ side of the first cylindrical member 21b, and at the position of L11 = 5.5 mm on the right side in the axial center line direction of the roll 17 from the edge ZZ. There is a tip 25a of the continuous protrusion 25, and L10 + L11 = 7 mm, and the distance in the axial center line direction of the roll 17 of the continuous protrusion 25 formed on the outer periphery of the second cylindrical members 21a, 21b. It has become.
[0013]
These continuous protrusions 25 have a length of 36 mm in the rotation direction of the roll 17, then a smooth circumferential surface of 24 mm, and a length of the continuous protrusion 25 of 36 mm. For example, in the two-dot chain lines Y4-Y4, Y5-Y5, and Y6-Y6 in FIG. 10, the distance between Y4-Y4 and Y5-Y5 is 24 mm and Y5-Y5 so that the smooth peripheral surfaces are alternately positioned. If the distance from Y6-Y6 is 36 mm, the continuous protrusion 25 is scraped between Y4-Y4 and Y5-Y5 to make a smooth peripheral surface.
Next, a cutter (not shown) having a tip angle of 80 degrees is placed in the axial center line direction of the roll 17 on each of the continuous protrusions 25 having a length in the rotational direction of 36 mm, as in the case of the continuous protrusions 9. And is cut off at a depth of 0.8 mm from the tip 25a to form notches, and many notches are formed at intervals of 1.3 mm in the rotation direction of the roll 1.
[0014]
By forming as described above, the continuous protrusion 25 shown in FIG. 10 becomes the second protrusion 27 as shown in FIG. 11, L12 = 36 mm, L13 = 24 mm, and the circumference is almost 600 mm. Ten second protrusions 27 are formed at intervals of 60 mm in the rotation direction of the roll 1 on the peripheral surfaces 29 of the second cylindrical members 21a, 21b,.
In addition, the notch 27 b formed at the tip of the second protrusion 27 has the same shape as the notch 13 b formed in the first protrusion 13. Therefore, for example, in FIG. 11, the enlarged explanatory view of the direction of the arrow from the alternate long and short dash line GG is as shown in FIG. 12 as in FIG. 7, and the height from the peripheral surface 29 to the tip 27a is 3.5 mm. Yes, the depth from the tip 27a to the bottom 27c is 0.8 mm, the interval between the adjacent tips 27a is 1.3 mm, θ4 = 80 degrees, and the explanation is as seen in the direction of the arrow from the one-dot chain line HH in FIG. The figure is the same as FIG. 8, and the explanatory view of the direction of the arrow viewed from the alternate long and short dash line II in FIG. 12 is the same as FIG.
[0015]
As described above, when the second cylindrical members 21a, 21b,... Are mounted and fixed to the base 19, as described above, the first cylinders are arranged in the left-right direction in FIG. The first cylindrical member 5b and the second cylinder are formed such that the first cylindrical member 5a of the roll 1 and the second cylindrical member 21a of the roll 17, for example, are arranged so that the cylindrical member and the second cylindrical member are opposed to each other. It mounts and fixes so that it may become a position which the shape-like member 21b opposes.
As a result, for example, the end XX where the first cylindrical members 5a and 5b shown in FIG. 6 contact each other, and the end ZZ where the second cylindrical members 21a and 21b shown in FIG. However, it will be located on the same line of a veneer conveyance direction.
[0016]
31 is a steel roll having a smooth peripheral surface and a diameter of 198 mm, like 15, the roll 17 and the axial center line are parallel, the tip of the second protrusion 27 provided on the roll 17 and the circumference of the roll 31. They are arranged relative to the roll 17 in a positional relationship such that the distance from the surface is about 0.5 mm.
Further, gears (not shown) having the same diameter are fixed to one end of the base 3 of the roll 17 and the roll 31 in the axial center line direction so as to mesh with each other. It is configured to be transmitted to the roll 31 through and rotated at the same peripheral speed.
[0017]
Sprockets (not shown) having the same diameter are fixed to the ends of the base 3 of the roll 1 and the base 19 of the roll 17 in the axial center line direction opposite to the side where the gear is provided. .
As shown in FIG. 13, in the roll 1, a smooth intermediate point 1 a between arbitrary first protrusions 13 adjacent in the rotation direction is an imaginary line connecting the axial center lines of the roll 1 and the roll 15. An imaginary line in which the intermediate point 17a in the rotational direction of the optional second protrusion 27 is connected to the axial center line of the roll 17 and the roll 31 in the state of being on the roll 15 side on the dotted line KK, Are each in a state of being on the roll 31 side on the two-dot chain line NN. In this state, the chain 22 is provided over both the sprockets and a sprocket (not shown) provided in the motor M as shown in FIG.
Because of these configurations, when the motor M rotates in the direction of the arrow, the roll 1 and the roll 17 rotate in the direction of the arrow at the same rotation angle, and the peripheral speed becomes the same.
A conveyor 33 that travels at the same speed as the peripheral speed of the roll 1 is arranged in the direction of the arrow on the carry-in side of the rolls 1 and 15 having the above configuration, as indicated by a two-dot chain line in FIG.
[0018]
The first embodiment is configured as described above, and a raw veneer 35 having a tree species of Radiata pine and having a thickness of 3 mm is placed on the conveyor 33 so that the conveying direction is parallel to the fiber direction.
Therefore, the raw veneer 35 is conveyed between the rolls 1 and 15, and the first protrusion 13 of the roll 1 is press-fitted.
Since the first protrusion 13 has a shape as shown in FIGS. 8 and 9, the portion where the first protrusion 13 of the green veneer 35 is press-fitted is expanded in a direction perpendicular to the fiber direction by a wedge action. As a result, a large number of cuts 37 are formed. However, since the first protrusions 13 are spaced as wide as 7 mm in the direction orthogonal to the fiber direction of the raw veneer 35 as described above, the first protrusions 13 adjacent to each other in the orthogonal direction are cut. There is almost no influence on the formation of the cuts, and the raw veneer 35 is hardly stretched in the direction perpendicular to the fibers even if the cuts 37 are formed.
Each notch 37 is formed with a crack 37a extending in the fiber direction of the raw veneer 35 and a front crack that penetrates from the notch to the front side surface of the raw veneer 35 in the thickness direction (not shown). ing.
[0019]
Furthermore, it conveys between the rolls 17 and 31, the 2nd projection part 27 of the roll 17 is press-contacted, and the notch 39, the crack 39a, and a front split are formed similarly.
As described above, the notches 37 and 39 are formed such that the distance between the two-dot chain line KK and the two-dot chain line NN is 300 mm, and the peripheral surfaces of the first cylindrical bodies 5a, 5b,. The length of the peripheral surface 29 of the 11 and the second cylindrical bodies 21a, 21b,... Is approximately 600 mm, and the chain 22 is stretched over.
For example, when the first projecting portion 13 of the rotating roll 1 and the second projecting portion 27 of the roll 17 are in the positional relationship shown in FIG. 13, the raw veneer is indicated by a dashed line as 35a, that is, the tip of the raw veneer 35a. Assuming that 36 has reached the position of the two-dot chain line KK, the distance between the two-dot chain line KK and the tip 36a of the raw veneer 35a is a half of 32 mm which is the length of L6 in FIG. Then, the cuts 37 are sequentially formed according to the arrangement of the first protrusions 13 provided on the roll 1.
As a result, as shown in FIG. 14, a large number of cuts 37 extending in the fiber direction of the green veneer 35 a (left and right in FIG. 14) have a distance L14 = 16 mm from the tip 36, and the length of each cut 37 in the transport direction. A large number of lines are formed with L15 = 28 mm, an interval L16 = 7 mm in the direction orthogonal to the conveying direction of each notch 37, and an interval L17 = 32 mm in the conveying direction of each notch 37. In addition, in the raw veneer 35a, a cut 37 is formed on the back side when it is placed on the conveyor 33. In FIG. 14, the raw veneer 35a is viewed from below, and the direction of the arrow is the transport direction. The upper edge is the front edge of the raw veneer 35a in FIG. 13, and FIG. 15 is also shown in the same state.
[0020]
The raw veneer 35a advances and is conveyed by 300 mm from the position indicated by the alternate long and short dash line 35b in FIG. 13, that is, the tip 36 of the raw veneer 35b reaches the position of the two-dot chain line NN, that is, the position indicated by 35a. Then, the roll 17 rotates halfway from the state of FIG. 13, but the positional relationship of the second protrusion 27 with respect to the roll 17 is the same as that of FIG. 13.
Therefore, a cut 39 having a length of 18 mm, which is a half of 36 mm, is formed on the raw veneer 35 b from the tip 36 by the second protrusion 27, and thereafter, according to the arrangement of the second protrusions 27 provided on the roll 17. Sequential cuts 39 are formed.
As a result, as shown in FIG. 15, the length L18 = 18 mm of the first cut 39 from the tip 36 of the raw veneer 35b, and thereafter the length L19 = 36 mm in the transport direction, and the distance L20 in the direction orthogonal to the transport direction. The cuts 39 are formed at a distance L21 = 24 mm in the transport direction = 7 mm.
Further, the positional relationship of the notch 39 with respect to the notch 37 is L22 = 2 mm in the transport direction, and in the direction orthogonal to the transport direction, the first tubular members 5a, 5b,. Since the members 21a, 21b,... Are opposed to each other in the transport direction, 2 mm, which is a value obtained by subtracting L10 = 1.5 mm in FIG. 10 from L2 = 3.5 mm in FIG. Become.
[0021]
As described above, at the stage where only the notches 37 are formed on the raw veneer 35 shown in FIG. 14 by the first protrusions 13 of the roll 1, they are hardly stretched in the direction perpendicular to the fibers.
In this state, when the second protrusion 27 is press-fitted into the raw veneer 35 so as to form the cut 39 at a position where L23 = 2 mm, the portion where the raw veneer 35 is press-fitted is the first protrusion 13. Similarly, it is spread in the direction perpendicular to the fiber by the wedge action. That is, as shown in FIG. 16 which is an enlarged explanatory view, forces f1 and f2 act in a direction away from the notch 39 by the press-fitting of the second protrusion 27.
When such a force is applied, the portion where the cut is not formed on the side of the cut 37 which is far from the cut 39 in the direction perpendicular to the fiber, that is, the side where the force f1 is applied, becomes a resistance and is difficult to spread. On the other hand, on the side of the notch 37 that is close to the notch 39, that is, the side on which the force f2 is applied, since there is the notch 37, it is easily deformed by shifting in the direction perpendicular to the fiber and the thickness direction of the green veneer 35. is there.
Therefore, the width of the cut 39 in the direction orthogonal to the fibers is greatly increased compared to the cut 37, and the entire green veneer 35 also has a larger proportion extending in that direction.
In the case of the raw single plate 35 of the radiata pine, the elongation in this direction was 5 to 7%.
In addition, according to the experiment, when the thickness is 6 mm or less for a single plate, particularly a raw single plate, if the distance corresponding to L23 is 4 mm or less, it is likely to be shifted and deformed as described above, and the elongation in that direction is the above value. Or close to it.
[0022]
In addition, in the formation of these cuts, the tip portions of the first protrusion 13 and the second protrusion 27 are formed with θ2 in FIG. 7 and θ4 in FIG. 12 being 80 degrees, so that wood chips are formed in the notches 13b and 27b. Even if it enters, it does not clog, and the tender rising process of the raw veneer P2 is performed well.
According to the experiment, if the angles θ2 and θ4 are formed to be 70 degrees or more, even if the undried veneer, that is, the wood veneer containing a large amount of moisture, enters the cutout portion 13b or 27b, it is eliminated by its own weight and clogged. There was nothing.
Further, since θ1 is formed to be 40 degrees in FIG. 8, the first protrusion 13 can easily enter the single plate with a relatively small force. If the value of θ1 is within 60 degrees, it is possible to enter the single plate satisfactorily.
[0023]
Next, a modified example of the present invention will be shown.
1. In the first embodiment, the roll 1 and the roll 17 are interchanged, and a cut is first formed by the second protrusion 27 of the roll 17 and then a cut is formed by the first protrusion 13 of the roll 1. You can do it.
2. In the first embodiment, the cut 39 is formed so that the end overlaps the cut 37 in the direction perpendicular to the fiber direction of the single plate, that is, when viewed from above in FIG. When the tree 37 and the cut 39 are formed as described above, it is not necessary to form them so that the cracks extending from the cut 37 in the fiber direction of the raw veneer 35 are relatively long and easily enter.
3. In the first embodiment, the roll 17 and the roll 31 are replaced, and the cut 39 shown in FIG. 15 is replaced with the cut 39 on the surface opposite to the surface on which the cut 37 of the raw veneer 35 is formed. You may form in the same position.
4. As a single plate, in addition to the raw single plate as described above, a single plate dried by a normal drying device may be used.
[0024]
【The invention's effect】
As described above, according to the present invention, in the single-plate tender rising method and apparatus for forming a cut by the protrusions, the yield can be greatly extended in the direction perpendicular to the fiber direction of the single plate.
[Brief description of the drawings]
FIG. 1 is an explanatory side view of a first embodiment.
2 is an explanatory front view of the direction of the arrow as viewed from the alternate long and short dash line AA in a state where the conveyor 33 is removed in FIG. 1;
3 is an explanatory front view of the direction of the arrow as viewed from the alternate long and short dash line BB in a state in which the chain 22 and the motor M are removed in FIG. 1;
4 is an enlarged explanatory view for explaining a process of processing the first protrusion 13 in a portion surrounded by an ellipse S in FIG. 2; FIG.
5 is an enlarged explanatory view of the direction of the arrow as viewed from the alternate long and short dash line CC in FIG. 4;
6 is an enlarged explanatory diagram of a portion surrounded by an ellipse S in FIG. 2;
7 is a cross-sectional explanatory view of the direction of the arrow as viewed from the alternate long and short dash line DD in FIG. 6;
8 is an explanatory cross-sectional view of the direction of the arrow as viewed from the alternate long and short dash line EE in FIG. 7;
9 is a partial cross-sectional explanatory view of the direction of the arrow as viewed from the alternate long and short dash line FF in FIG. 7;
10 is an enlarged explanatory diagram for explaining a process of processing the second protrusion 27 in a portion surrounded by an ellipse T in FIG. 3;
11 is an enlarged explanatory view of a portion surrounded by an ellipse T in FIG. 3;
12 is an enlarged explanatory view of the direction of the arrow as viewed from the alternate long and short dash line GG in FIG.
FIG. 13 is an enlarged explanatory diagram of a main part of FIG. 1;
FIG. 14 is a partial plan view illustrating a state of incision formed in a single plate.
FIG. 15 is a partial plan view illustrating a state of incision formed in a single plate.
16 is an enlarged explanatory diagram of a main part of FIG. 15;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Roll 3 ... Base 5a ... 1st cylindrical member 5b ... 1st cylindrical member 5c ... 1st cylindrical member 11 ... Circumferential surface 13 ... 1st projection part 13b ... Notch 21a .. second cylindrical member 21b .. second cylindrical member 21c .. second cylindrical member 23 .. roll 27 .. second protrusion 25b. Notch 29. peripheral surface 35. raw veneer

Claims (6)

  A plurality of first cuts having a predetermined length in the fiber direction of the veneer veneer are formed by the protrusions at predetermined intervals in the fiber direction and in a direction perpendicular to the fiber direction, and then perpendicular to the fiber direction with respect to the first cut. A veneer that forms a second cut continuous in the fiber direction at a location that is between the two first cuts adjacent to each other in the fiber direction when viewed in a direction orthogonal to the fiber direction, and whose interval in the direction is 4 mm or less Single plate tender rising method.   A plurality of first cuts having a predetermined length in the fiber direction of the veneer veneer are formed by the protrusions at predetermined intervals in the fiber direction and in a direction perpendicular to the fiber direction, and then perpendicular to the fiber direction with respect to the first cut. A second notch having a direction interval of 4 mm or less and continuous in the fiber direction with a length overlapping with at least one of the two first notches adjacent in the fiber direction as viewed from the direction orthogonal to the fiber direction. Method of tender rising of veneer veneer to form.   The method for tenderizing a veneer veneer according to claim 1 or 2, wherein the veneer veneer is an undried veneer veneer. 4. The veneer veneer tender rising method according to any one of claims 1 to 3 , wherein the veneer veneer is 6 mm or less in thickness. The peripheral surface of one roll is provided with a number of protrusions protruding in the radial direction and continuing for a predetermined length in the rotational direction at intervals in the rotational direction and the axial center line direction, and the other roll has a smooth peripheral surface, A pair of freely rotatable first rolls that are arranged with the axial center line directions parallel to each other, and at least any one roll is driven to rotate;
Similarly, the peripheral surface of one roll is provided with a number of protrusions protruding in the radial direction and continuing for a predetermined length in the rotational direction at intervals in the rotational direction and the axial center line direction, and the other roll has a smooth peripheral surface. A pair of rotatable second roll groups that are arranged so that the axial center line directions thereof are parallel to each other and at least one of the rolls is driven to rotate are provided at a predetermined interval,
The position of the protrusion with respect to one roll of the first roll group, the position of the protrusion of one roll of the second roll group, and the predetermined interval between the first roll group and the second roll group,
The interval in the direction perpendicular to the fiber direction is 4 mm or less with respect to the first notch formed by the protrusion on the veneer single plate inserted in the first roll group in parallel to the fiber direction, and is orthogonal to the fiber direction. Veneer veneer tender rising device each set so that a second cut continuous in the fiber direction is formed at a location between two first cuts adjacent in the fiber direction when viewed from the direction .   The protrusion provided on the peripheral surface of one roll of the first roll group and the second roll group is an isosceles triangle whose tip angle in a cross section perpendicular to the rotation direction of the roll is within 60 degrees. Furthermore, at the tip of the projection in the radial direction, when the roll is viewed from the axial centerline direction, the angle formed by the inclined surfaces facing in the axial centerline direction of the roll is 70 degrees or more. The veneer single-plate tender rising device according to claim 5, wherein a number of U-shaped or U-shaped notches are formed in the rotational direction.

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