JPS5983604A - Method and device for ruling veneer in veneer lathe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that the left and right end faces of a raw wood log to be used as a raw material are held between the left and right ends.
2. While rotating, a long blade comparable to the length of the log is bitten into the outer circumferential surface of the log by a predetermined amount, and the veneer race is cut into a relatively thin and wide sorted veneer veneer. The present invention relates to a scoring method and a scoring device for so-called width determination, which regulates the width τj of a veneer.

A typical creasing device for veneer laces that has been used in the past is Utility Model Publication No. 34-15795 M (critling device for Honji Maru Peeling Machine), that is, a creasing device that holds the creasing blade 10. Pull blade guiding member A1. A2, A3, etc. are installed on the slope facing the pressure bar 1 (to be exact, pressure bar 4≠tree 4, and the guiding member is positioned appropriately according to the predetermined width of the veneer, and the veneer is The scoring blade 10 is placed on the outer peripheral surface of the log near the cutting edge of the fishing force 3 for cutting (the gap between the cutting edge and the tip of the pressure bar is generally referred to as the cutting edge).
The width is determined based on the condition of the raw wood before it is pierced and the veneer is peeled off with a fishing force of 3. When raw wood with cuts made at predetermined intervals on its outer circumferential surface is turned into thin veneers, it is divided into predetermined widths by the cuts and separated. Therefore, the effective depth of the cuts, that is, the cutting blade 10 into the raw wood, is small, but the cuts are made to a depth that is greater than the thickness of the veneer to be cut.

Next, to explain the actual situation of cutting veneers from raw wood, the first step in peeling raw wood that has unevenness on the outer circumferential surface is to cut a relatively thick veneer (referred to as rough peeling). It is used for the middle board of plywood products, and when the raw wood reaches a nearly perfect circle state, a relatively thin veneer is cut (referred to as Honkiki) and used for the front and back boards of the plywood product. When the wood reaches the core area of the log, the material generally becomes brittle and is peeled thickly again (called core peeling) to obtain the veneer for the intermediate board. It is customary to perform turning while changing the thickness to a different thickness and also changing the scoring method each time.

In the above-mentioned situation of cutting veneer from raw wood, the conventional scoring device had the following defects.

1. Cut perpendicular to the wood fibers with a scribing knife that fixes the outer circumferential surface of the raw wood. As a result, the operating rate decreases due to work interruptions, etc.

2. If the cutting edge is applied to the outer surface of the log, the cutting edge will swing arbitrarily due to the hardness and softness of the knots and other woody parts, leading to breakage of the cutter.

3. If you move the log in the axial direction for width adjustment, etc. with the creasing blade applied to the log, the cutting edge will bend and break immediately.

4. Because the pressure bar is installed in front of the body, it prevents the scattering of salt water from raw wood containing a large amount of moisture that is being rotatably cut at high speed, and the sudden increase in volume due to the sudden bag frame during rotary cutting of logs with many cracks. Collisions of log fragments may occur, and in order to protect the equipment, the structure itself must be made stronger or it must be covered with a protective cover, resulting in an unnecessary equipment.

5. In the original state, the crease cutting blade is applied to a depth greater than the thickness of the veneer, so if you transition from rough cutting to regular peeling, scars from cutting the thick veneer will remain, resulting in a veneer that cannot be made into a product. Yield decreases.

6. The cutlery has a short lifespan as it has to be cut into raw wood by force, and the blade doesn't last as long and needs to be resharpened.

The present application eliminates the above-mentioned defects by installing the scoring blade device, which was conventionally installed on the front side of the pressure bar body, near the bottom of the pressure bar body, thereby stopping the harvesting of logs and using the fishing force. A cap-like finish is applied to the veneer immediately after it has been cut.

This will be explained below with reference to the drawings. FIG. 1 is a side view of the embodiment. L indicates a log serving as a raw material, which is held by a spindle (not shown) at its left and right end faces and rotated in the direction of arrow A. Reference numeral 11 denotes a fishing stand, which generally has a triangular cross section, and has a cutting tool 12 for cutting a veneer at its upper end, which is tightly held with the cutting edge facing upward. 13 is a base made of stainless steel, etc., and a cutter 12
(comparable to the length of the log) to the tip of the conjugate, and if necessary, a narrow slit (described later) is made on the back side.

2J has a pressure bar body, and a tubular type with a rectangular cross section is often used.It is placed on the fishing platform 11''2, and the fishing platform 11 and the pressure bar body 21 are integrated by a feed screw (not shown). It moves forward in the direction of arrow B toward the log. The amount of advance is determined by flη so that the required cut veneer Jγ moves forward for one revolution of the log.

A pressure bar 22 is tightly held at the front end of the pressure bar body. The pressure bar is in contact with the outer peripheral surface of the log near the cutting edge of the knife 12 to regulate the thickness of the veneer to be cut and to prepare the surface of the veneer. Therefore, the veneer V is produced in the direction of arrow C from the gap between the tip of the veneer cutting blade 12 and the tip of the pressure bar 22, and the veneer overflows from the so-called blade a. 23 is a front block member that forms the 111th surface of the pressure bar body, and is attached to the pressure bar body 2 by bolts or the like.
1 and has an integral structure.

The pressure bar f-21 is installed on a substantially horizontal mounting seat 24 provided below the mounting position of the fresher bar 22, and the force, tar 31, support part $, I
' 32, and the cutter advancing/retracting mechanism 43, and the cutter advancing/retracting mechanism further includes, for example, a fluid cylinder 43G, a pivot base 43B, a pivot 43S, and the like.

Attachment of the marking device (= J seat 24 is provided approximately horizontally in a space drilled at multiple locations below the pressure bar and along the longitudinal direction of the pressure bar. It is slidable in the axial direction of the log through the provided dovetail groove.

The advancing/retracting mechanism 43 has a function of advancing and retracting the cutter 31 in the direction of the arrow, and uses a fluid cylinder, a spiral shaft, or the like.

FIG. 1 represents an embodiment of a fluid cylinder. As described above, the fluid cylinders 43C are slidably attached to the mounting seat 24 by dovetail grooves or the like, and after the cylinders installed at a plurality of locations are positioned at a predetermined width, they are fixed with appropriate bolts or the like. 43 B is the pivot base and covers the sliding range of the fluid cylinder 43 of the advance/retreat mechanism! Suspended pivot 43
S is pivotally supported and fixed to the mounting cage 24.

FIG. 2 is a detailed view of the cutter 31, showing a freely rotatable rotary cutter, with +A+ being a side view and a front view cut along tBlt. The rotating force/cutter consists of a sharp circular cutting edge 31P and a boss 31B with a circular cutting edge, and its shape is often disc-shaped like a manual pipe cutter. is also possible.

The cutter is made of high-speed steel, which is heat treated such as hardening, and is mounted on the support shaft 32S, as shown by the arrow E.
It is held vertically on a support part I;l 32 so as to be rotatable in the direction. The support member is the piston rod 4 of the fluid nolinder
3R tip is locked, and the cutter 31 can move forward and backward in the direction of the arrow by the operation of the fluid cylinder 43C. In attaching the fluid cutter and the saw cutter 31, the support shaft 32S inserted through the canter is made long enough to cover the range of movement for determining the width of the cutter, and the left and right ends of the shaft are supported by the support members 32, and the fluid cylinder It may be configured such that the fluid cylinder is fixed in the width determining direction, and only the cutter is moved by moving the support shaft 2, and its movement in the axial direction is restricted by collars or the like from both sides as appropriate, and the cutter is fixed.

In addition to the fluid cylinder shown in FIG. 1, the Naori Tsuta advancing/retracting mechanism 43 can engage the cutter using a combination of advancing and retreating using male and female helical shafts, or rapid forward and backward movement using a fluid cylinder, and slow forward and backward movement using a helical shaft. is also possible.

In addition, a spring or the like is interposed so that the entire scoring device 40 automatically retreats in response to an abnormal load such as when the cutting edge becomes hard and blocked by wood material due to cutting of raw wood containing extremely soft wood parts. In some cases, it is installed elastically in the direction of the arrow.

A device that moves the cutter back and forth in the D direction shown in Figure 1, that is, in the approximately horizontal direction, may be used, but in relation to the cutting angle of general-purpose veneer laces, the cutting angle is usually around 10° from the horizontal plane that includes the axis of the log. A mechanism in which the tip of the pressure bar 22 retreats at an angle of A plurality of pieces may be arranged in the direction of arrow C in some cases.

The shape of the pressure bar body 21 is shown in Figure 1:
+ L, if there is bulge in the vertical direction, place the marking device 40 in the middle of the bottom part of the pressure bar body 21 (・
Is it possible to provide the J-seat 24, or if there is no bulge below, the device 40 can be installed at the F of the pressure bar body.
The veneer (2) is suspended from the body in the vicinity of the surface, and the veneer (2) is properly concealed with a protective cover or the like so as not to interfere with its removal.

The FM-based scoring device 40 described in 1 below is installed at multiple locations in the width direction of the veneer (the axial direction of the log and the longitudinal direction of the plain yard) (generally near both left and right ends and near the center). It will be deployed at three locations.

In addition to the above-mentioned embodiments, a straight linear blade may be used, or as a special method, a rotary cutter with a serrated edge may be used, and the cutter may be configured to be rotationally driven by an electric motor.

Furthermore, a slit-like recessed groove of an appropriate width is provided on the back side of the metal piece 13 that serves as the receiving blade of the cutter 31, and a relatively soft aluminum alloy or the like is pasted to correspond to the nuclear force and the blade. Also good. If the 1" metal 13 of the gun turret is omitted and the upper tip of the gun turret is constructed as a single piece extending to the IZI metal part, the slit can be directly drilled into the back of the gun turret.

To explain the embodiment based on the above configuration 1, when starting cutting the raw wood, after adjusting the distance between the cutters of the left and right ends for rough peeling and positioning them, the advancing and retreating mechanism 43
The cutter is moved forward toward the log side, and the cutter is placed on standby just before the cutting edge of the canter contacts the back surface of gold 13 or the back surface of the conjugate. If a slit or the like is drilled on the back of the mouthpiece, advance the cutting edge so that it is slightly buried in the core. Next, the log is rotated in the direction of arrow A, and cutting is started by the veneer cutting blade 12. Immediately after cutting, the cut veneer V is energized by the propulsive force of the rotation of the log, and the cutting edge is moved smoothly and smoothly. and passes through the cutter 31.

When the cutter 31 winds up the veneer between it and the back of the base, it freely rotates in the direction of arrow E, making three cuts in the veneer and cutting it to a predetermined width. The middle plate continues to rub against the back side of the gun turret 11 and slide down in the direction of arrow C, and is transported to a predetermined A-X device by a subsequent device such as a conhair. Next, if you change the thickness of the veneer and move to real peeling, do you need to use regular peeling? jlThe center scoring device is moved back by an advance/retreat mechanism to a position where it does not involve the veneer to be cut and produced, and the left and right end scoring devices are used to make two cuts in the same manner as above.

As described above, the present invention brings about the following advantages.

1 The cut into the veneer by the scoring device is made after the blade 1 has passed, and the generated wood chips, wood powder, etc. are placed on the cut veneer and are promptly transferred, eliminating any problems such as clogging of the blade 1-1. can't happen.

2 The cut is made after the middle plate is formed, and the cutting edge will not swing from side to side due to the partial hardness and softness of the log.

3 Since the cutter does not affect the log, the log can be moved freely in the axial direction at any time, regardless of the creasing device.

4. The equipment can be put together without worrying about collisions due to log damage or salt water flooding.

5. Even when changing the thickness of the cut veneer, no scars remain and the yield is improved.

6. For example, reusing a pipe cutter (from this,
The cost of the cutter is low.

7. Due to the shearing caused by the rotation of the cutter, the blade is not close enough.
Running costs are said to be low.

The above is a very simple method with high practical value) Ruler 917
1""194°L t knee O-r '6・2
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[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of the present invention. FIG. 2 is a detailed view of the cutter. jl･･････････････････････････････････････････････････.
......Cuttle for cutting veneer 13...Tera...
・・・・・・Bell 21−−−−−−−−−−−−−Brenyer bar body 22・・・・・・−・・・・・・Pressure bar 24・・・・・・・・・...Mounting seat 3
1 @...all...Φ・-1 cutter 40...
・・・・・・・・・Rating device 43・・・・・・・・・
・・・Advancing and retracting mechanism 19 Figure 1 1 Figure 2 (A) (Jl) 31 dJP

Claims (1)

[Claims] ■ In a veneer lace for cutting veneers from logs, a cutter of a creasing device is provided near the bottom of a pressure bar body, in which the veneer is lathed by a veneer cutting blade placed in the joint. A method for marking a veneer in veneer lace, which is characterized by making cuts in a predetermined τJ method immediately after cutting the raw wood and cutting it. 2. A method for marking a veneer in a veneer lace according to claim 1, wherein the veneer glue scratches are created by a rotating cutter that rotates freely. 3. The method for marking a veneer in a veneer lace according to claim 1, wherein the cuts in the veneer are made by a driven rotary cutter. 4. A veneer race for cutting veneer from raw wood, which is equipped with a joint that holds the veneer cutting blade tightly with its cutting edge diagonal, a pressure bar at the tip, and a cutter that advances and retreats approximately horizontally with an advance and retreat mechanism. A veneer lace creasing device for veneer lace, characterized in that a creasing device consisting of a cutter advancing and retreating mechanism is disposed near the lower side of the pressure bar, and a pressure bar body is disposed above the binding. 5. The veneer lace veneer lace scoring device according to claim 4, wherein the cutter of the scoring device is a rotary cutter that can rotate freely. 6. The veneer lace veneer lace scoring device according to claim 4, wherein the cutter of the scoring device is constituted by a rotary cutter driven by an electric motor. 7. Any one of claims 4 to 6, characterized in that the cutter advancing/retracting mechanism is constituted by a female and male threaded shaft that engages with the cutter, is for marking a veneer in the veneer lace according to claim 1. Equipment u08 The advancing and retracting mechanism of the cutter is composed of one fluid cylinder. Scope of Patent Claims Any one of paragraphs 4 to 6, paragraph 1. Pulling device. 9. The veneer lace according to any one of claims 4 to 6, wherein the cutter advancement/retraction mechanism is constituted by a combination of a female and male screw shaft and a fluid cylinder. Ruling device. The 1O marking device is located at the bottom of the pressure bar which is drilled in the first part of the body (= one J seat is placed).
A veneer lace marking device for veneer lace board according to any one of Claims 49 and 9). II i. A marking device for a board II in a bench press according to any one of claims 4 to 9, characterized in that the marking device is suspended from a pressure bar body. . 12. The veneer lace in the veneer lace according to any one of claims 4 to 11, characterized in that the cap attached to the gun turret has a slit formed on the back surface thereof to correspond to a marking device. marking device. 13. The veneer lace veneer lace scoring device according to any one of claims 4 to 12, characterized in that the entire device is elastically held. (Margin below)