JPH0232803A - Manufacture of decorative veneer - Google Patents

Abstract

PURPOSE:To enable a single plate having cross-grain to be cut out continuously from the entire length of a log timber by cantilever-supporting the log timber on a frame, and moving a planer step by step at a predetermined rate by placing a blade top into contact with the circular periphery from the free end side of the log timber while a planer blade is moving rotatably along the peripheral circuit of the log timber. CONSTITUTION:A cutting machine is used, which is equipped with a frame 1 for cantilever-supporting a log timber W and a planer blade 2 for cutting a veneer out of the free end side of the log timber W. The machine frame 10 of the frame 1 is provided with a chuck 11 for clamping and holding the cantilever side of the log timber W. The planer 2 is mounted on a planer table 20, and secured such that the blade is brought into contact with the circular surface of the log timber W from a tangent direction, and also connected with a rotating wire in order that it rotates along the peripheral circuit of the log timber W by means of a driving motor 21, besides, adjusted positionally to the slant angle theta at constant at the rising gradient of the region of 5 deg. from the free end side relative to the axis of W of the log timber W, and attached in such a manner that the planer blade 2 can be moved parallel to the axis W of the log timber W step by step by moving the planer table.

Description

DETAILED DESCRIPTION OF THE INVENTION ``Industrial Applications'' The present invention relates to a method for manufacturing veneers used for decorative pasting of furniture materials, ceiling panels, floor materials, and various other board materials.

Conventional technology Traditionally, when manufacturing veneer plywood or other veneer, a rotary race spindle chucks logs such as lauan from the left and right at the shaft center, and the spindle is rotated to level the logs. A veneer is cut by rotating a planer blade whose cutting edge is positioned horizontally and abutting the circumferential surface of a log from a tangential direction. In this veneer manufacturing method, if the log is curved or there is a difference in diameter at the butt end, it is possible to avoid the formation of continuous open flat end plates until the log becomes a perfect circle. If it has a certain width, it can be used for repairing the back plate of plywood, but most of it is usually discarded.

Problems to be Solved by the Invention However, when using inexpensive logs such as lauan, there is no problem, and when using precious woods such as cedar, zelkova, kuzumoku, mulberry, and kurugaki, which have beautiful heather grains, the problem becomes extremely large. This will lead to waste, and as mentioned above, when cutting a veneer by touching the cutting edge of the planer blade parallel to the axis of the log material from the tangential direction, the grain will only appear straight-grained and it will not be used for decorative purposes. It is not possible to produce a veneer exhibiting a board-like grain pattern that is preferable as a veneer.

In addition to cutting veneers using rotary laces, it is also possible to cut and form the flitch board as a veneer using a knife or saw, but this not only requires a lot of effort to cut out the veneer, but also involves pre-shaping the flitch board. This inevitably results in material waste.

In (2), an object of the present invention is to provide a method for manufacturing a decorative veneer that minimizes waste of materials and exhibits a beautiful board-like grain.

Means for Solving the Problems In the method for manufacturing a decorative veneer according to the present invention, a log is cantilever-supported on a frame, and a plane blade is attached to the log, the cutting edge of which contacts the diurnal surface of the log from a tangential direction. The planer blade is adjusted to a predetermined oblique angle with an upward slope from the free end side to the axis of the log material, and the plane blade is rotated along the circumference of the log material from the free end side to the circumferential surface of the log material. A continuous spiral decorative veneer is obtained from a log by moving the planer blade or frame a predetermined amount at a time while bringing the cutting edge into contact with the log.

Function: In this method of manufacturing decorative veneer, the planer blade, which contacts the circumferential surface of the log from the tangential direction, is adjusted to a predetermined oblique angle with an upward slope from the free end side relative to the axis of the log. death,
The planer blade rotates around the circumference of the log, which is cantilever-supported on a stand, and cuts the veneer from the free end of the log. Not only can a veneer with a wood grain pattern be carved into a spiral shape, but also a spiral shape can be created by moving a planer blade or a cantilever frame made of log material by a predetermined distance during the cutting process. You will be able to continuously carve veneers.

Embodiments will now be described with reference to the accompanying drawings.

The manufacturing method of this decorative veneer uses log wood W with beautiful grains such as precious wood as raw material, and from the log wood W, o, i ~ 1
This method is applied to cutting and forming thin plate materials with a thickness of approximately 0 mm.

In order to cut this veneer, as shown in Fig. 1, a frame 1 for cantilever-supporting a log material W, and a planer blade 2 for cutting the veneer from the free end side of the log material W are provided. A cutting machine can be used. The frame 1 is installed so that it can withstand the weight of the log material W and support it stably.
0 is equipped with a chuck 11 that inserts one end of the log material W and clamps it for tightening. The planer blade 2 is mounted on a planer stand 20, as shown in FIG. 2, so that the cutting edge contacts the circumferential surface of the log W from the tangential direction (see the dashed line). In addition, this planer blade 2 is driven by a drive motor 21.
As shown in Figure 2, the circumference of the log material W (see the two-dot chain line)
It is connected to a rotating shaft (not shown) so as to rotate along the axis of the log, and as shown in Fig. 3, it is always inclined at an upward slope of about 5° from the free end side with respect to the axis W0 of the log material W. The planer blade 2 is installed so that its position can be adjusted to θ and the planer blade 2 can be moved in parallel with the axis W0 of the log material W by moving the planer metal side. As the position adjustment and walking movement mechanism, the one schematically shown in FIG.
(Only one side is shown) is vertically installed, and the support shafts 24a, 24b of the planer stand 20 are placed vertically on each rail 22, 23, and the bearings are installed so that they can be tightened and fixed. Can be configured. In addition, the walking movement mechanism section is provided with rack teeth 25 and horizontally long grooves 26 along the longitudinal direction of the plane table 20, and the rack teeth 25 are provided with a machine frame (not shown).
pinions 27a, 27b, 28a, which are installed in upper and lower pairs in
By meshing the lower side of 28b, the binions 27a and 2
7b.

By reversibly rotating 28a and 28b, the support shaft 24a,
The planer table 20 can be configured to move forward or backward while slidingly guiding the planer 24b along the horizontally long groove 26.

Note that when the plane table 20 is moved up and down or adjusted in angle by the position adjustment mechanism section of the plane blade 2, the pinion 27b on the lower side.

28b can be moved up and down, and the upper binions 27a and 28a are fixed to the machine frame by bearings, and the lower binions 27b and 28b are supported by bearings so as to be movable up and down.

28b with the compression spring 29 and the rack tooth 2
5 should be engaged with the spring. In addition, the support shafts 24a and 24b
If a roller or the like is attached to the shaft end side that engages with the horizontal groove 26, the planer table 20 can be pivotally supported so as to slide smoothly.

When cutting a veneer from a log W using this cutting machine, if the log W is straight over almost the entire length, the log W is placed on the frame 1 even if there is a difference in diameter at the butt end. When the log material W is supported cantilevered, the log material W is positioned horizontally, so the planer blade 2, which is located at an oblique angle θ to the axis of the log material W, is brought into contact with the log material W from the free end side. By rotating the log material W around the log material W, a spirally continuous veneer S as shown in FIG. 4 can be obtained. At the beginning of cutting, a relatively narrow veneer is cut out, but even that veneer is cut out over several years' worth of tree rings, so it has a large corrugated, board-like heather grain. It comes to be cut as a veneer exhibiting As this cutting progresses and the free end side of the log W takes on a substantially conical shape, a veneer of a predetermined width is cut out over the entire width of the planer blade 2. After that, a veneer having the most preferable grain pattern can be continuously cut out.

In addition, when the log W has a bend as shown in Fig. 1.3, the axis W extending from the free end side of the log W to the bending point
Adjust the position of the planer blade 2 according to O. The position adjustment can be performed by moving the support shafts 24a and 24b up and down along the guide rails 22.23 while maintaining a predetermined oblique angle θ, and the bending point of the log material W is reached. After that, since the axis of the log material W becomes horizontal, the position of the planer blade 2 is adjusted in the same way as described above, and cutting is continued thereafter, so that a continuous spiral veneer S can be obtained.

The veneer S can be used as a checkered veneer for ceiling panels, floorboards, etc., as shown in Figure 5, by cutting out the corrugated edges that occur at the rings and cutting it into square or rectangular shapes. Alternatively, it can be used as a decorative veneer for a small door panel of furniture as shown in FIG. 6, or for various other products.

In the above-described embodiment, it was explained that a continuous veneer is cut over the entire length of the log W by moving the planer blade 2 side forward, but instead of this, the log W can be supported on a cantilever. It is also possible to manufacture a continuous spiral veneer by moving the pedestal 1 side.

Effects of the Invention As described above, according to the method for manufacturing a decorative veneer according to the present invention, a veneer having grain-like grains can be continuously cut out from the entire length of a log. This makes it possible to efficiently obtain a veneer that produces a grain pattern even if there is a bend in the wood or a difference in the end diameter of the wood.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram of a cutting machine applied to the method for producing decorative veneer according to the present invention, Figs. 2 and 3 are schematic explanatory diagrams of the same cutting machine, and Fig. 4 is a schematic illustration of a cutting machine applied to the method for manufacturing a decorative veneer according to the present invention. Figures 5 and 6 are explanatory diagrams of the use of the same veneer. 1: Frame, 2: Planer blade, W: Log material, Wo: Axis line,
θ: The angle at which the planer blade is held beveled, S: A decorative veneer that is continuous in a spiral shape. Patent application Omiya 1) Four parts

Claims (1)

[Claims] A log (W) is cantilever-supported by a frame (1), and a planer blade (2) that contacts the circumferential surface of the log (W) from a tangential direction is attached to the axis (W_o) of the log (W). The planer blade (2) is adjusted to a predetermined oblique angle (θ) with an upward slope from the free end side, and the planer blade (2) is rotated along the circumference of the log (W). By moving the planer blade (2) or stand (1) by a predetermined amount at a time with the cutting edge in contact with the circumferential surface from the free end side of the A method for producing a decorative veneer, characterized in that a board (S) is obtained.