JPH09193106A - Vertical slicer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to heavily slice a cross grain material by moving a knife in a plane substantially perpendicular to the ground surface, and cutting a timber. SOLUTION: The vertical slicer (a) drives a knife 2 by a driving means in a plane substantially perpendicular to the ground surface and cuts a veneer from a flitch 7. The flitch 1 is fixed to a flitch holder 8 at an angle A to the knife 2, the holder 8 is guided reciprocatingly to a flitch guide 9 having the guide oblique surface of an angle B (BΕA) in the same bias direction as the angle A to the knife 2, and oppositely driven to the drive of the knife 2 by the driving means.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slicer for cutting wood to produce a veneer, and more particularly to a vertical slicer for cutting wood by moving a knife in a plane substantially perpendicular to the ground.

[0002]

2. Description of the Related Art Slicers for producing wood veneer are divided into two types: a horizontal slicer that horizontally moves a knife or a flitch (a log made of flat wood) and a vertical slicer that vertically moves a knife. It is roughly divided into two. FIG. 2 is a schematic view of a horizontal slicer that moves a knife. With respect to the fixed flitch 21, a knife 22 having an appropriate bias angle θ (usually 5 to 30 °) is horizontally reciprocated to cut the veneer. FIG. 3 is a kind of horizontal slicer, which is generally called a vertical collision slicer. This vertical collision slicer fixes a knife 32 having a bias angle θ of 50 to 85 °, and a flitch 31
Is driven by a belt or the like and fed in the longitudinal direction to cut the veneer. FIG. 4 is a schematic view of a general vertical slicer. The flitch 41 is fixed and the two swing arms 4
The knife 42 hung at 3 is swung like a pendulum to cut the veneer. Each of the above methods has the following advantages and disadvantages. The horizontal slicer of FIG. 2 can produce a relatively wide veneer, but can only cut a thin veneer. Also, the skin of veneer is not as beautiful as the vertical slicer.
Since the vertical slicer of FIG. 3 is a so-called front cutting in which the knife enters from the front substantially in the fiber direction of the flitch 31, either the grain as shown in FIG. 5A or the sheet as shown in FIG. Can also be cut. Moreover, since the bias angle of the knife 32 is set larger than that of the horizontal slicer as shown in FIG. 2, the skin is relatively beautiful. Further, there is an advantage that a long object can be pierced. However, since the operation of feeding the flitch 31 to the knife 32 in the minimum length to cut the veneer and then returning it to the original position again is repeated, only 4 to 5 veneers can be obtained per minute. However, there is a drawback that the work efficiency is poor. The vertical slicer of FIG.
Since the member that holds 2 is used to cut the veneer by using the weight that falls, it is possible to stably cut a thick veneer, and because it cuts like a Japanese knife, the cutting surface is extremely It has the advantage of being beautiful. In addition, since it is possible to cut about 15 to 30 sheets per minute, workability is good. However, since it is a state similar to so-called side cutting in which the knife enters from the side with respect to the fiber direction of the flitch, it is possible to obtain a very beautiful veneer, but in the case of the grain, half is normal. It is convenient for cutting, but the rest becomes an inversion and back cracking occurs. Especially in the case of thick butt, it is remarkable,
In fact, it was impossible for a vertical slicer to pierce a thick plate. Further, since the knife 42 and a member that weighs several tons and holds the knife 42 are moved in the vertical direction, a large power source is required to lengthen the stroke and the cost is increased. As a result, the horizontal slicer There is also a problem that such a wide veneer cannot be cut.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned prior art, and an object thereof is to provide a vertical slicer capable of thickly punching a wood grain material.

[0004]

The vertical slicer of the first invention is a vertical slicer which cuts a veneer from a flitch by driving the knife by a drive means in a plane substantially perpendicular to the ground to cut the flitch from the knife. The angle A is fixed to the flitch holding means, and the flitch holding means is driven by the driving means with respect to the knife at an angle B (B ≠ A) in the same bias direction as the angle A.

The vertical slicer of the second invention is the first slicer.
In the vertical slicer of the invention, a crank gear that is a driving means of the knife and a crank gear that is a driving means of the flitch holding means are integrally pivotally supported, and a power transmission point to the knife and a flitch holding means in each crank gear are provided. The power transmission point has a phase difference of about 180 °.

[0006]

According to the above construction, the cutting direction of the knife is close to the longitudinal direction of the flitch, which enables thick piercing of the plate, which was not possible with the vertical slicer in the past. Further, since the flitch is driven to face the knife at the angle B, the relative stroke becomes large, so that a wide veneer can be cut, and the pulling action is strengthened.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vertical slicer a of the present invention will be described by way of an embodiment. As shown in FIG. 1, a knife holder 3 is suspended on two swing arms 4 pivotally supported on a frame 1. The knife 2 is attached to the knife holder 3. The crank gear 5 is provided on one side of the knife holder 3.
A crank arm 6A pivotally supported at a power transmission point 10A of A is attached. On the other hand, the flitch 7 is attached to the flitch holder 8, and its attachment posture is such that the longitudinal direction thereof forms an angle A (5 ° to 15 °) with the knife 2, as shown in FIG.
Crank arm 6B is attached to one side of the flitch holder 8, and the other end of the crank arm 6B is
At the power transmission point 10B, which is 180 ° in phase with the power transmission point 10A in the crank gear 5B integrated with the crank gear 5A, the crank gear 5B is rotatably attached to the frame 1, and the flitch holder 8 is attached to the frame 1. Reciprocally slidably guided by a guide means to a flitch guide 9 having a fixed predetermined inclined surface, and the inclined surface forms an angle B with respect to the knife 2 in the same bias direction as the angle A (however, B ≠ A). ) To move the flitch 7 in the direction of the arrow Q in FIG. 6, and the guide means uses a widely used linear motion mechanism to dispose a rail on the flitch guide 9 side and a rail on the flitch holder 8 side. It is made up by attaching blocks that run.

As shown in FIG. 1B, when the knife 2 swings down from the top dead center of the crank arm 6A as shown by the arrow P as shown in FIG. While the longitudinal direction of the knife 2 is tilted by the angle A, the knife 2 is tilted by the angle B.
1A and 1B, the knife 2 cuts the veneer while the knife 2 reaches the bottom dead center of the crank arm 6A, as shown in FIG. As you can see, flitch 7 and knife 2
Since the cutting is performed while inclining by an angle A and moving in the direction of an angle B, the single plate cutting of the vertical slicer a of the present invention is substantially front cutting, and thus it is conventionally impossible with the vertical slicer. It is possible to thicken the board.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment. For example, although the above embodiment is one in which the knife 12 is swung in an arc shape, the knife 12 is not in an arc shape but is linear as shown in FIG. 7 by using the guide means of the above-mentioned linear motion mechanism. It may be a method of moving up and down in an oblique direction. Further, although the above-described embodiment is directed to the case where the crank gears 15A and 15B rotate integrally, the present invention is not necessarily limited to this. It is assumed that both crank gears rotate independently and they are separated. It may be driven by a motor.

[00010]

As described above, according to the present invention, it is possible to perform thick piercing of the plate, which is impossible with the conventional vertical slicer. Furthermore, since the flitch is cut while moving in the direction of the angle B with respect to the knife,
The relative stroke of the knife is larger than when the flitch is not moved, and it is possible to cut a wide single plate. Become beautiful. Also, when the crank gears that drive the knife and the flitch are driven integrally by the motor, the flitch rises when the knife descends, and the flitch descends when the knife rises. Since they cancel each other out, the fluctuation of the motor load is small and the mechanical balance is good.

[Brief description of the drawings]

FIG. 1 One embodiment of the vertical slicer of the present invention

FIG. 2 is a schematic view of a general horizontal slicer.

FIG. 3 is a schematic view of a vertical collision slicer.

FIG. 4 is a schematic view of a conventional vertical slicer.

FIG. 5 is an explanatory view of a stitch of a flitch and a stitch of a board.

FIG. 6 is an explanatory diagram of the present invention.

FIG. 7 is another embodiment of the present invention.

[Explanation of symbols]

 1 frame 2 knife 3 knife holder 4 swing arm 5A crank gear 5B crank gear 6A crank arm 6B crank arm 7 flitches 8 flitch holder 9 flitch guide 10A power transmission point 10B power transmission point a vertical slicer

Claims (2)

[Claims] 1. A vertical slicer for cutting a veneer from a flitch by driving the knife by a driving means in a plane substantially perpendicular to the ground, and fixing the flitch to the flitch holding means at an angle A with the knife. , The flitch holding means is driven by a driving means with respect to the knife at an angle B (B ≠ A) in the same bias direction as the angle A,
A vertical slicer characterized by cutting a single plate by driving a flitch in opposition to the drive of a knife. 2. A crank gear, which is a driving means of the knife, and a crank gear, which is a driving means of the flitch holding means, are integrally pivotally supported, and a power transmission point to the knife in each crank gear and a flitch holding means. The vertical slicer according to claim 1, wherein the power transmission point has a phase difference of approximately 180 °.