JP2612229B2 - Lumber method for prismatic timber - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sawing lumber of prismatic lumber capable of cutting out a full-thick pillar from bent wood.

[0002]

2. Description of the Related Art Conventionally, as this type of wood gripping device,
For example, there is one described in Japanese Utility Model Publication No. 1-11433.

[0003] In this conventional technique, in a sawmill feeding machine in which a head block supporting base is provided on a truck having wheels on rails, the head block supporting base moves left and right by a fluid pressure cylinder and moves up and down along a column. A head block to which a pair of hooks are attached, a substantially L-shaped first support arm pivotally connected to one end of the head block via a pivot, and a pivot pivotally attached to the head block support base from a vertical state to a horizontal state. And a substantially L-shaped second support arm which can move and move back and forth in the length direction of the head block support base with a hydraulic cylinder, and the length of the opposed portion of the support arm is set to the width of the band saw tooth. This is a material delivery vehicle characterized by having a longer length.

[0004] Separately, Japanese Unexamined Patent Application Publication No.
No. 501 is well known.

In this conventional example, a cutting reference line is provided for a material to be cut and transferred to an apparatus for setting the position of the material, where the cutting reference line is detected and a predetermined posture is set. Then, the material is transferred to the material feeding device in this posture, and is held by the material feeding device. Thereafter, the material feeding device is moved, and the saw blade provided on the side of the moving track of the material feeding device is used. This is a method of sawing wood so that the wood is cut.

[0006] As a device for executing the above method, a material storage device provided with a cutting reference line as described in the above-mentioned publication, a material attitude setting device, a material feeding device, and a material feeding device near the side of the material feeding device. A sawing machine, and a rolling device for the material, a device for detecting a cutting reference line facing the rolling device, and a scoring device for transferring the material from the attitude setting device to the material feeding device. Wood sawing equipment is also a well-known technique.

[0007]

In each of the prior arts described above, all logs are first sawn into a drum shape using a twin band saw and sawn, and then the drum-shaped wood is removed from a wood mouth surface chucking member of a sending vehicle. 90 so that the first grinding surface is up and down
° After re-grip and re-grinding, the column material was obtained a second time.

[0008] Therefore, the work of changing the direction of the drum material is complicated, and it takes time to determine the sawing reference line (so-called saw path determination). In order to cut it out, it is necessary to re-hold it several times in deciding the sawing path, which is troublesome and has poor workability.

According to the present invention, in order to eliminate the above-mentioned problems, a drum material, especially as a pillar material, is drawn on a first grinding surface of a drum material obtained by first-turning a bent log with a laser beam or the like. It is an object of the present invention to obtain a full-width thick timber from a bent log by turning the drum material by 90 ° and turning the timber after slightly raising / lowering correction so that a predetermined range portion including the center of the timber can be accommodated.

[0010]

SUMMARY OF THE INVENTION An object of the present invention described above is to provide an apparatus for gripping and holding a piece of wood to be sawed between gripping claws opposed to a feeder wheel by using a cut edge thereof. A rotary drive source is mounted on a movable table which is disposed on a base of a feeder car so as to be able to advance and retreat with a thrust drive source via a thrust guide section, and the drive section is mounted on a shaft pivotally supported by a bearing on the base. At the end of the shaft, gripping claws are provided at the tip of the shaft, and upper and lower arms having a gripping member for adjusting the vertical position of the wood between the gripping claws by vertically sandwiching the wood are arranged vertically near the front end of the base. This can be achieved by projecting and interposing a lifting drive source such as a fluid pressure cylinder between these arms and the holding member.

[0011]

In the case of a raw wood bent between a pair of gripping claws on a base of a feeder car, the raw wood gripped by sandwiching both mouths of the raw wood with a well-known means so that the bending direction of the raw wood is vertical, in the axial direction thereof. When the logs are transferred by the driving force of the feeder truck, the logs in the middle of the transfer can be first ground into a drum shape in cross section with a well-known twin band saw to produce a drum material slightly curved up and down.

Next, after the drum material is returned to the original position before the first grinding by moving the feeding vehicle, the upper and lower surfaces near the mouth of the drum material are clamped by clamping members mounted on the vehicle. Remove the pinching claws from the sides of the lips.

[0013] Then, the sawing line as a pillar material of the twin band saw is drawn on each of the first ground surfaces using a well-known laser light irradiator or the like. The saw line as a pillar is depicted.

Next, when the predetermined range portion including the center of the drum material is deviated from the above-mentioned line, the drum material is moved up and down little by little by the vertical driving force of the lifting drive source together with the holding members sandwiched from above and below. By doing so, it is possible to preset so that the left and right initial ground surfaces of the drum material, particularly the central predetermined range portion, fall within the sawing line.

[0015] Thereafter, the mouth of the drum material is gripped by gripping claws, the holding member is removed from the wood, and the gripping claws are rotated by 90 ° by a shaft rotated by the rotational force of the rotary drive source. The first grinding surface of the drum material can be turned up and down.

Next, the feeder truck is moved again, and the rounded side surface of the drum material is cut out as a square material with the parallel twin blades of the twin band saw, so that almost the entirety of the drum material is removed except for both ends in the longitudinal direction. A prismatic pillar material can be obtained.

[0017]

An embodiment will be described with reference to the drawings. First, as shown in FIG. 1, the basic configuration of the present invention is to place a log W for sawing with a twin band saw BS between gripping claws disposed in front of and behind a long material feeding vehicle S at the front end thereof. In constructing the device for sandwiching and gripping, a thrust guide portion such as a dovetail groove or the like as shown in FIGS.
Thrust drive source such as piston / cylinder via 1a 1
The movable platform 2 is arranged so as to be able to advance and retreat at b.

A rotary drive source M such as a motor is mounted on the movable base 2 and a 90 ° movable drive unit m having passed through a speed reducer is mounted on the base 3 on a shaft 3 which is horizontally supported by a bearing 3a. connect.

At the end of the shaft 3, gripping claws 4 are provided as shown in FIGS. 2 and 3, and the upper and lower sides of the raw wood W gripped between these gripping claws 4 as shown in FIG. As shown in FIGS. 1 to 3, the holding members 5, 5 for adjusting the vertical position of the base 1 are vertically opposed by the upper and lower arms 6, 6 of the base 1 near the front end of the base 1, respectively. To protrude.

The arms 6, 6 and the holding member
As shown in FIG. 5, lifting drive sources 7, 7, such as fluid pressure cylinders, are interposed between 5, 5, respectively.

In FIG. 5, reference numeral 7a designates an elevation drive source 7, for example, a pivot of a hydraulic cylinder, and 7b designates a vertical holding spring member of the cylinder.
Both the 7a and the spring member 7b may be omitted, and the fixed portion of the lifting drive source 7 may be fixed to the arm 6 as shown in FIGS.

The rotary drive source M can be a stepping motor, a hydraulic motor, or a combination of a hydraulic cylinder and a rack and pinion. It may be provided, but it may be provided only on one side of the feeder wheel S and the wood may be driven on one side.

Further, the transmission vehicle S is a twin band saw BS.
The base 1 and the gripping claws 4, the holding members 5, the arms
The width of 6 is naturally narrower than the interval (about 90 mm or more) between two vertically parallel saw blades of the twin band saw BS.

As described above, the rotary drive source M is provided on the upper surface of the base 1 of the feeder wheel S, as described above, by a well-known thrust guide member 1a, for example, a turntable such as a dovetail plate engaged in a dovetail groove.
2 and a pair of left and right gripping claws 4,
4 can be changed by about ± 10 cm by a well-known means through a thrust drive source 1b such as a hydraulic cylinder, so that each wood claw 4, 4 can be securely gripped between the gripping claws 4, 4 at each of the open ends thereof. After the sawing, the gripping of the column member W2 is released.

In the drawings, the reference numeral n designates a set screw, and each member is made of a tough material such as metal.

The configuration of the present invention is as described above, and its operation will be described below. Fig. 1 on the base 1
In the case of a raw wood, the edges of the logs are bent between the pair of gripping claws 4 in the state shown in FIG. 6, and the raw wood is sandwiched and gripped as shown in FIGS. When the log W is transported in the axial direction by the driving force of the feeder S, the log W in the middle of this transport is firstly ground into a drum-shaped cross section with a well-known twin band saw BS as shown in FIG. Thus, a drum material W1 slightly curved up and down as shown in FIG. 8 can be produced.

Next, as shown in FIGS. 8 and 9, the drum material W1 is returned to the original position before the first grinding as shown in FIGS. 8 and 9, and the upper and lower surfaces of the drum material W1 which are close to the mouth of the drum are fed. After clamping as shown in FIGS. 4 and 10 with the clamping members 5, 5 mounted on the lumber wheel,
The gripping claws 4 are removed from the mouths of the two trees as shown in FIG.

Then, the sawing lines L, L as pillar members of the twin band saw are respectively projected and drawn from the horizontal direction as shown in FIG. 11 on the above-mentioned initial grinding surface using a well-known laser light irradiator. Since there are two ground surfaces a, the sawing lines L, L as pillars are drawn for each of the left and right surfaces.

Next, when a predetermined range portion including the center of the drum material W1 is deviated from the above-mentioned lines L, L, the drum member is sandwiched from above and below, and the vertical drive source 7 is moved up and down. By slightly moving up and down by the driving force, it is possible to preset so that the left and right initial ground surfaces of the drum material, particularly the central predetermined range portion, fall within the saw line L, as shown in FIG.

After that, the mouth faces of the drum material W1 are gripped by gripping claws 4, 4 as shown in FIG.
14 is removed from the drum material W1, and the gripping claw 4 is rotated by 90 ° by the shaft 3 rotated by the rotational force of the rotary drive source M as shown in FIG. Can be turned up and down as shown.

Next, the feeder S is moved again, and the rounded side of the drum material W1 is now twin band saw BS.
By cutting out as a square bar with the two parallel blades, a square pillar W2, which is almost entirely correct except for both ends in the longitudinal direction, can be obtained as shown in FIG.

[0032]

As described above, the present invention has the following advantages. In constructing an apparatus for gripping and holding wood for sawing between gripping claws opposed to the feeder truck by the cut edge thereof, the base 1 of the feeder truck S is provided via a thrust guide portion 1a. A rotary drive source M is mounted on a movable table 2 which can be moved forward and backward by a thrust drive source 1b, and a drive unit m is connected to a shaft 3 horizontally mounted on the base 1 by a bearing 3a. The upper and lower arms 6, 5 are provided with holding members 5, 5, which are provided with gripping claws 4 at their ends to adjust the vertical position of the log W between them.
6 are protruded up and down near the front end of the base 1 and lifting drive sources 7, 7 such as fluid pressure cylinders are interposed between the arms 6, 6 and the holding members 5, 5, respectively. The saw blades L, L, which are drawn by a laser beam or the like on the first ground surface a of the drum material W1 obtained by first grinding the bent log so that a predetermined range portion including the center of the drum material W1 is particularly included in the saw path L. After slightly correcting the vertical movement, turning the drum material by 90 ° and turning it into a square bar can obtain a square bar that is as thick as possible from the bent wood, which has the industrial effect of saving resources and being economical.

[0033]

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a sawmill using the present invention.

FIG. 2 is an enlarged side view showing an example of a main part of the apparatus of the present invention.

FIG. 3 is an enlarged perspective view showing a main part of the device of the present invention;

FIG. 4 is an elevation view showing a main part of the apparatus of the present invention;

FIG. 5 is a partially cutaway enlarged side view showing an example of a lifting drive source portion in the apparatus of the present invention.

FIG. 6 is a schematic plan view showing an example of use of a sawmill using the device of the present invention.

FIG. 7 is a schematic plan view showing an example of use of a sawmill using the device of the present invention.

FIG. 8 is a side view showing an example of use of a sawmill using the device of the present invention.

FIG. 9 is a schematic plan view showing an example of use of a sawmill using the device of the present invention.

FIG. 10 is a side view showing an example of use of a sawmill using the device of the present invention.

FIG. 11 is an enlarged side view showing an example of a drum material by a sawmill using the device of the present invention.

FIG. 12 is an enlarged side view showing an example of a drum material by a sawmill using the device of the present invention.

FIG. 13 is a side view showing an example of use of a sawmill using the device of the present invention.

FIG. 14 is a schematic plan view showing an example of use of a sawmill using the device of the present invention.

FIG. 15 is a schematic plan view showing an example of use of a sawmill using the device of the present invention.

[Explanation of symbols]

 1 Base 1a Thrust guide section 1b Thrust drive source 2 Movable table 3 Shaft 3a Bearing 4 Gripping claw 5 Clamping member 6 Arm 7 Elevating drive source M Rotation drive source m Drive unit S Feeding car

Claims (1)

(57) [Claims] [Claim 1] A pair of gripping claws movable and protruded on a base of a material feeding vehicle having a width smaller than a band saw interval of a twin band saw, the raw wood bending direction is up and down, and the two wooden mouth faces are gripped. A step of transferring the log in the axial direction by the driving force of a feeder, and a first round of the log in the middle of the transfer with a parallel two blades of the twin band saw, and a drum material slightly curved up and down. The step of making, after returning the drum material to the original position before the first time by the movement of the transmission vehicle, the upper and lower surfaces near both mouths of the drum material are larger than the band saw interval mounted on the transmission vehicle. After clamping with a narrow clamping member, removing the gripping claws from both mouth faces, and delineating a saw path line as a pillar member of a twin band saw on each surface of the first time using a laser beam irradiator. And the specified area including the center of the drum When the drum material is out of the line, the drum material is moved up and down little by little by the vertical driving force of the lifting drive source together with the holding member sandwiched from above and below, so that the left and right initial snoring surfaces of the drum material are placed in the sawing line. In particular, a step of presetting the position so that the center predetermined range portion is accommodated, and while holding the both lip surfaces of the drum material with the gripping claws again, removing the holding member from the wood, and moving the gripping claws with the rotational force of the rotary drive source. By turning 90 degrees by the rotating shaft,
A step of turning the drum surface of the drum material for the first time up and down, and moving the feeder again to cut out the rounded side surface of the drum material this time as a square material with two twin blades of a twin band saw, in the longitudinal direction. And a step of obtaining substantially square pillars substantially entirely except for both end portions, respectively.