JPH0375101A - Cutting equipment of veneer for decoration - Google Patents

Abstract

PURPOSE:To extremely eliminate waste of material and to obtain veneer for decoration having beautiful grains by pushing and sending a log timber into the internal cavity of a holder from one end side while rotating the holder and cutting the log timber obliquely for the direction of axial line by the knife edge of a cutting knife projected to the inside of the cavity. CONSTITUTION:A cutting blade 2 rotated together with a holder 1 is positioned at an angle correspondent to the oblique side of an internal cavity 10 of the holder 1 in the longitudinal direction and also the knife edge is projected to the connecting direction of the internal cavity 10 and fitted. Therefore when the holder 1 is rotated by a turning mechanism and a log timber W is placed on a pedestal 5, pushed and sent into the internal cavity 10 of the holder 1 from the edge face of one end side, the cutting knife 2 starts to obliquely cut the end part of the log timber W according as the cutting knife 2 is rotated around the circumference of the log timber W. In the initial stage for starting this cutting, the small piece-shaped or yarn waste-shaped shavings are produced. After several times of rotation, veneer is cut off which is relatively narrow in width but has width continued in a band shape. The veneer having width is obtained by obliquely cutting the edge side of the log timber W and cut off in a range over the annual rings in the several years. Therefore the log timber W is cut as veneer having large wave grains.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Use The present invention relates to decorative veneers cut from logs to be used for decorative printing of furniture materials, ceiling materials, floor materials, and various other products. This invention relates to a cutting device.

Conventional technology Conventionally, as a device for cutting veneers from logs, a spindle chucks logs such as lauan wood from the left and right at the center of the shaft, as in the case of manufacturing veneers such as veneer plywood, and the spindle is rotated. A rotary race is used that rotates the log horizontally and cuts the veneer by bringing a straight planer blade into contact with the circumferential surface of the log from the tangential direction.

Problems to be Solved by the Invention In this rotary lace, if the log has a bend or a difference in diameter at the butt end, discontinuous end plates are cut out until the log becomes a perfect circle, and then continuous single pieces are cut out. Normally, if the end plate has a certain width, it is used for repairing the middle plate of veneer plywood, but many of them are discarded.

However, when using cheap logs like lauan wood, there is a huge waste when using precious woods such as cedar, zelkova, kuzumoku, mulberry, and kurugaki, which have beautiful heather grains. In addition, as mentioned above, when cutting a veneer by placing the cutting edge of the planer blade parallel to the axis of the log from the tangential direction (in contact with it), the grain only appears in a straight-grained shape, which is preferable for decorative veneer. It is not possible to produce a veneer with a heather grain.

In addition to cutting the veneer using a rotary race, it is also possible to cut and form the flitch board as a veneer using a knife or saw. This necessitates waste of material in shaping.

An object of the present invention is to provide an apparatus for producing a decorative veneer that minimizes waste of materials and exhibits a beautiful board-like grain.

Means for Solving the Problems: A holder is provided which has a generally conical internal cavity with a trumpet-like opening into which one end of a log can be inserted, and the side surface of the holder is cut out so that one end of the log material can be inserted in the axial direction of the internal cavity. A cutter blade installation surface is formed that spans the area and communicates with the internal space, and the longitudinal direction of the blade is positioned obliquely on this installation surface at an angle corresponding to the oblique side of the internal cavity, and faces in the tangential direction of the internal cavity so that it is straight. A shaped cutter blade is attached, and a cut veneer outlet is formed at a distance between the cutting edge of the cutter blade and the notch edge of the holder, and this holder is rotatably received and a cutter blade is installed on the narrow side of the internal cavity. Equipped with a rotating mechanism, and furthermore,
It is constructed by arranging a pedestal capable of supporting a log in the internal cavity of the holder with one end side facing the end side.

Function: In this decorative veneer cutting device, when the holder is rotated by the rotating mechanism and the log is pushed from one end into the internal cavity of the holder, the cutting edge of the cutter blade that protrudes into the cavity cuts the log along its axis. Since the cutting is performed diagonally to the direction of the log, it is possible to cut a continuous spiral veneer even if the log has a large or small diameter or is slightly curved. In addition, this cutting device can cut veneers by rotating the holder side of the cutter blade without rotating the log side, and moving the log linearly to the holder, so it is mechanically simple. can do.

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

This cutting device is used to cut cedar and zelkova, which have beautiful heather grains.

It is suitable for cutting decorative veneers used as surface materials for various products from precious woods such as Kuzumoku, Mulberry, and Kurugaki. The holder 1 includes a holder 1 having a generally conical inner cavity 10 with a trumpet-shaped opening into which one end of the material W can be inserted. This holder 1 is made of metal, and the internal cavity 10 has an opening corresponding to the maximum diameter of the precious wood mentioned above and an oblique side corresponding to the width of the desired veneer, as shown in Fig. 2. It may be formed to have a substantially conical shape. The holder 1 has a cutter blade installation surface 11 that communicates with the internal cavity 10 in the axial direction of the internal cavity 10.
is formed by cutting out the side part. The space created by this notch is formed by including the thickness of the cutter blade, which will be described later, and at least the space that will serve as the outlet for the cut veneer. It is formed with an inclined surface so as to face in the tangential direction of 10. On the installation surface 11 of the cutter blade, there is a third
As shown in the figure, a straight cutter blade 2 is fixed to a blade main body 2a and a back blade 2b with bolts, and is held and mounted on a cutter stand 20. The cutter blade 2 is mounted so that the longitudinal direction of the cutting edge is positioned obliquely at an angle corresponding to the oblique side of the internal cavity 10 and faces the connecting direction of the internal cavity 10, and is adjusted by screwing through the cutter base 20. bolt 2
1 is attached so that the protruding dimension of the cutting edge can be freely adjusted in and out of the internal cavity 10 of the holder 1. The cutter stand 20 is fixed to the installation surface 11 of the cutter blade 2 with bolts 22,
At the same time, the cutter blade 2 is also attached to the installation surface 11 with the holding bolt 23.
It can be tightened to fix it. The space between the cutting edge of the cutter blade 2 and the notch edge 12 of the holder 1 facing each other with a gap therebetween is formed as a discharge port 13 for the cut veneer, and in addition, the gap side of the internal cavity 10 is opened with a through hole 14. It is preferable to form the structure so that chips, etc. can be discharged.

The holder 1 of the cutter blade 2 is equipped with a rotating mechanism 3 connected to each other on the side between the internal cavity 10. The rotation mechanism 3 can be equipped with a rotation shaft 33 that uses the drive motor 30 as a drive source and transmits the power of the drive motor 30 via variable speed gear mechanisms 31 and 32. The rotation shaft 33 is installed on the machine side through bearings 34 and 35, and one end is attached to the presser bearing 3.
It is preferable to receive and support the cup bearing 37 with 6.
This rotating shaft 33 has a backing plate 38 fixed to the other shaft end.
and a backing plate 13 provided on the holder 1 on the side between the internal cavity 10 and the internal cavity 10 are fixed with bolts.
It is installed on the extension line of 0 in the axial direction. Instead of the rotation shaft 33, a wheel gear is attached to the outer circumferential side of the holder 1 between the inner cavity 10, and the drive motor 30 is connected to this wheel gear via an endless chain, thereby making a rotation mechanism for the holder 1. It can also be equipped as 3. Further, the holder 1 rotated by the rotation mechanism 3 is rotatably received and supported at the open end side of the internal cavity 10. As shown in FIG. 4, the open end side of the internal cavity 10 formed in a perfect circle of the holder 1 is supported by left and right steady rest rollers 40 and 41 installed on the machine side, and
A substantially U-shaped roller receiving frame 42 surrounding the outer periphery of the holder 1
It can be configured so that it is pressed and supported by a presser roller 43 provided in the. With respect to the holder 1, a cradle 5 capable of supporting a log material W with the end surface of one end facing the internal cavity 10
is installed. This pedestal 5 can be configured with a roller stand that can push the log W by supporting it by a worker, or it can hold the end side of the log W with a chuck and push the log W with a drive cylinder. It can also be configured with an automatic feed mechanism. Further, the pedestal 5 may be configured as a pedestal supporting the log material W in a cantilevered manner, and may be configured to drive the equipment side of the holder 1 to move forward with respect to the log material W.

In the decorative veneer cutting device constructed in this way, the holder 1 is rotated by the rotation mechanism 3, and the log material W is placed on the pedestal 5 &
: When the cutter blade 2 that rotates with the holder 1 is placed in the inner cavity 10 of the holder 1 from the end face of the holder 1 and is pushed forward, the cutter blade 2 is positioned in the longitudinal direction at an angle corresponding to the oblique side of the inner cavity 10, and the cutting edge is Since it is attached so as to protrude in the connection direction of the internal cavity 10, as the log material W rotates around the circumference, the end portion of the log material W begins to be cut diagonally.

At the beginning of this cutting, only the end of the wood log W is being scraped, so small pieces or thread-like shavings are produced, but after several rotations, even if the width is relatively narrow, continuous band-like shavings are formed. The veneer is cut out. The wide veneer is cut diagonally from the end of the wood log W, and is carved out over several years' worth of annual rings, so it is cut into a veneer with large corrugated grains. . As this cutting progresses and one end of the log material W becomes approximately conical, the veneer S having the most preferable grain pattern continues in a spiral shape over the entire width of the cutter blade 2, as shown in FIG. It will be carved out. Even if the diameter of the log W varies or there are undulations during the process, it is possible to machine a continuous veneer S in a spiral shape by simply changing the width of the veneer to be cut. Even if there is a bend in the longitudinal direction, if the loading posture of the log W is adjusted from the bending position and fed straight into the internal cavity 10 of the holder 1, a continuous spiral veneer S can be cut out. be able to. This veneer S can be cut into a square or rectangular shape by cutting out the corrugated edges that occur at the ring.As shown in Figure 6, this veneer S can be used as a checkered veneer for ceiling panels, floorboards, etc. Alternatively, as shown in FIG. 7, it can be used as a decorative veneer for a small door of furniture or for various other products.

Effects of the Invention As described above, according to the decorative veneer cutting device of the present invention, logs are cut diagonally with the cutter blade, so even if the log is large or small, has undulations, or is curved, it can be cut into a band shape. A continuous veneer can be cut, and a decorative veneer with beautiful grains can be efficiently obtained by effectively chamfering the veneer. In addition, when cutting this veneer, the log is cut by rotating the holder side with the cutter blade and moving one of the holders without rotating the log, so the relatively heavy log side This makes it possible to have a mechanically simpler structure than rotating one.

[Brief explanation of drawings]

Fig. 1 is a side view showing the entire decorative veneer cutting device according to the present invention, Fig. 2 is a side sectional view of a holder installed in the device, and Fig. 3 is a side view showing the holder on the side between the inner cavity. Figure 4 is a front view of the same holder seen from the opening side of the internal cavity, Figure 5 is an explanatory diagram of the veneer cut out with the same device, and Figures 6 and 7 are the same veneer. It is a usage explanatory diagram. 1: Holder 10: Internal cavity, 11: Cutter blade installation surface, 12: Notch edge of holder, 13: Cutting veneer outlet, 2: Cutter blade, 3: Rotating mechanism, 5: cradle, W: Log material, S: Cut veneer.

Claims (1)

[Claims] A holder (1) having a generally conical inner cavity (10) with a trumpet-shaped opening into which one end of a log (W) can be inserted is provided, and the (1) side part of the holder is cut out to form an inner cavity. The inner space (10) extends in the axial direction of the cavity (10).
), and an installation surface (11) for the cutter blade (2) that communicates with the cutter blade (2) is formed, and an internal cavity (
A straight cutter blade (2) is mounted obliquely at an angle corresponding to the hypotenuse of the inner cavity (10) and facing the tangential direction of the inner cavity (10), and the cutting edge of the cutter blade (2) is connected to the holder (1). A discharge port (13) for the cut veneer (S) is formed at a distance between the notch edge (12) of the holder (
1) is rotatably received, and a rotating mechanism (3) is connected and connected to the gap side of the internal cavity (10), and the butt end surface of one end is directed toward the internal cavity (10) of the holder (1). A decorative veneer cutting device characterized in that a pedestal (5) capable of supporting a log (W) is arranged.