JPH07214504A - Method and device for feeding lumber for lumbering device - Google Patents

Abstract

PURPOSE:To comprehensively rationalize so-called centering work of lumber strips which is performed in a process until lumber strips are transferred to a lumber-feeding trestle supporting the lumber strips in a time for ripping. CONSTITUTION:A lumber feeder 4 is equipped with a feed transfer device 14 constituted of a guide rail 25 and a clamping body 23, a temporarily centering device 4a constituted of an elevating board 50 and a size-detecting device 30 and a main centering device 4b constituted of a clamp device 40 and the size- detecting device 30. Further the feed transfer device 14 is constituted of the respective units of two sets which are reciprocated between a temporarily centering part Z1 and a main centering part Z4, and between the main centering part Z2 and a ripping stand-by part Z,,. The strokes of the respective units of two units are same which are reciprocated between the temporary centering part Z1 and the main centering part Z2 and between the main centering part Z2 and the ripping stand-by part Z4.

Description

Detailed Description of the Invention

[0001]

[Object of the Invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material feeding method for a lumber mill and a device therefor, and more particularly to a process for transferring the sawdust to a feeder base supported at the time of sawing (transfer preparation zone). The present invention relates to a method and an apparatus for comprehensively rationalizing the so-called centering work of sawdust material performed in (1).

[0002]

BACKGROUND OF THE INVENTION In the work of sawing a log log and cutting it into square timbers or drums obtained by sawing only two opposite faces, the sawing timbers are transferred to a feeding rack that supports them at the time of sawing. Was spending a lot of time working. Specifically, when transferring the sawdust to the material feeding stand, it is necessary to set the posture of the sawdust to a position suitable for the sawing work, and it is necessary to spend a lot of time for this work or It takes a lot of time for the supporting member for supporting and feeding the cutting material to the material feeding rack to return it to the cutting material storage table again after transferring the cutting material to the material feeding rack. During this time, there was a problem that the process part for setting the attitude of the sawdust was idle.

As one of the methods for setting the attitude of the sawdust in the above-mentioned work in a position suitable for the sawing work, the sawdust is rotated by the driving of a pair of V-shaped chain conveyors to measure the size of the wood mouth surface. After detecting the center position or the deviation of the grain of wood by an appropriate detection means, and based on this result, it is determined in advance which kind of posture to grind the sawing material with the highest yield and profitability. For example, a method has been put into practical use in which a grind material is grasped and transferred by a clamp body, and a posture is set to a core-cutting snare provided on a material feeding stand to carry out the grind processing (Japanese Patent Laid-Open No. 1-113201).
(See FIG. 1). In the method, the size of the crushed body is large, although the crushed body is rotated to measure the two diametrical directions orthogonal to each other and the average thereof is obtained, or the outer diameter dimension is averaged. In the case where the chain conveyor is bent or the wood diameters at both ends are extremely different, the absolute position of the shredder greatly fluctuates in the pair of V-shaped chain conveyors, so that proper measurement cannot be performed. There was a case. Further, in the above-mentioned application, although it was possible to increase the operation rate of the process part for setting the attitude of the sawdust by providing the supply moving device in three rows as an example, it is necessary to also provide the guide rails in three rows, There is room for improvement because the device configuration is complicated and large.

[0004]

[Technical Items Attempted to Develop] The present invention has been made in consideration of such a background, and it is more expensive to transfer the sawdust to a feeder base equipped with a 90 ° inversion type snare device. This is an attempt to develop a new material supply method for a lumbering machine and a device for the same, which can perform accurate centering and further improve workability.

[0005]

[Constitution of the invention]

[Means for Achieving the Object] That is, in the material supply method for a lumber mill according to claim 1, the sawdust is transferred to the movement start position of the saw rack, and the saw rack is held by the saw rack, after which the saw rack is fed. In the feeding method during a series of lumbering processes in which the saw is moved toward the sawing device and the predetermined sawing is performed, when the sawing material is fed, the sawing material is grasped in a suspended state by the supply moving device. And measure the material for non-rotation in the temporary centering section of the material supply device to obtain a temporary core, and then perform rotational measurement in the main centering section to determine the main core of the ground material. It is characterized by

Further, in addition to the above requirements, in the lumber feeding method according to the second aspect of the present invention, the transfer of the sawdust by the feed moving device reciprocates between the temporary centering section and the main centering section. It is characterized by comprising a transfer process and a secondary transfer process that reciprocates between the main centering unit and the grinding standby unit.

Furthermore, in addition to the above requirements, the material supply method for a lumber mill according to a third aspect of the present invention is characterized in that the primary transfer stroke and the secondary transfer stroke have the same stroke.

Further, in addition to the above requirements, in the lumber feeding method according to claim 4, in the temporary centering portion, the outer diameter dimension is calculated after raising the grinding material, and based on this result. It is characterized by setting the lifting stroke.

Furthermore, in the lumber feeding apparatus according to the fifth aspect of the present invention, the sawdust is transferred to the movement start position of the saw rack, the saw rack is held by the saw rack, and then the saw rack is ground. In a material-supplying device during a series of lumbering processes in which the material is moved toward a splitting device to perform a predetermined sawing split, a provisional moving device including a guide rail and a clamp body, and temporary centering including an elevating table and a measuring device. It is characterized by comprising an apparatus and a main centering apparatus including a scraper apparatus and a measuring apparatus.

Further, in addition to the above requirements, in the material supply device for a lumber mill according to a sixth aspect of the present invention, the supply / movement device is provided between the temporary centering portion and the main centering portion, and between the main centering portion and the grounding portion. It is characterized by comprising two units each reciprocating to and from the standby unit.

Furthermore, in addition to the above-mentioned requirements, the lumber supply device for a lumbering apparatus according to claim 7 has a space between the temporary centering part and the main centering part, and between the main centering part and the grinding standby part. Each of the two units traveling back and forth is characterized by the same stroke. And these means are intended to achieve the said objective.

[0012]

According to the present invention as set forth in claim 1 or 5, the slicing material is measured non-rotatingly to obtain a temporary core, and then the sizing is rotationally measured to determine the main core of the cutting material. Therefore, rotation measurement can be performed smoothly and accurately. According to the invention described in claim 2 or 6, the transfer of the sawdust is performed by a primary transfer process that reciprocates between the temporary centering unit and the main centering unit, and the main centering unit and the grinding standby unit. Since it is shared by the secondary transfer process that reciprocates between and, the operating rates of the temporary centering unit and the main centering unit are increased. According to the invention described in claim 3 or 7, since the primary transfer stroke and the secondary transfer stroke have the same stroke and the sawdust is transferred, the operating rate of the entire apparatus is improved. Claim 4
According to the invention described in (1), since the temporary centering determines the outer diameter dimension while raising the cutting material and sets the elevating stroke, the cutting material is accurately grasped. That is, according to the present invention, since provisional centering is performed by providing the provisional centering portion in the front part of the scraper device for rotating the sawing material, the rotation for performing the main centering performed around this provisional core is performed. It will be done more smoothly. Further, by making the transfer means from the temporary centering section to the main centering section and the transfer means from the main centering section to the material feeding stand independent, the stroke of the transfer means is shortened and the operating rate of the entire apparatus is improved.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to illustrated embodiments. In this description, the device of the present invention will be described first, and then the method of the present invention will be described together with the operating state of the device. Reference numeral 1 denotes a lumbering apparatus to which the present invention is applied, which refers to a whole set of apparatus during the time when the sawdust A is supplied and sawed. Therefore, the sawing machine 1 includes a band saw machine 2 as a sawing machine, a material feeding stand 3 for supporting and moving the sawdust material A to a sawing position of the band saw machine 2, and a material feeding device 4 which is the main body of the present invention. Become. Each of these members will be described below.

As an example, the band saw machine 2 serving as a sawing device is a so-called double saw band sawing machine, and the band sawing machines 2 having the same structure are used opposite to each other. However, these grinding devices are not limited to the band saw machine 2 as described above, and other circular saw machines or an appropriate grinding machine capable of performing multiple grindings more than double grinding can be applied. This band saw machine 2 is constituted by a pair of upper and lower tires 5 and a band saw blade 6 suspended by this as a main member according to a conventional method, and the band saw blades 6 facing each other are approached and separated so that the cutting position can be appropriately changed. Can be adjusted to the state.
Then, the material feeding base 3 for supplying the sawing material A to the band sawing machine 2 moves on two parallel rails 9 attached to the base 8. That is, a wheel 10 rolling on a rail 9 is provided below the material feeding base 3, and a sawing material A is provided above the wheel 10.
A support plate 11 on which the sheet feeding device is mounted is provided, and further, a core-cutting snare 12 is provided on both left and right end sides of the material feeding platform 3.

Next, the material supplying device 4 of the present invention will be described. The material supplying device 4 supplies the sawing material A to the above-described material feeding base 3 and performs temporary centering, main centering, and transfer of the sawing material A, which is a series of steps up to the transfer and placement thereof. In this case, two sets of two supply moving devices 14 that directly take charge of the sawdust A and move the sawdust A are provided. This supply moving device 1
With respect to _{No. 4} , the supply moving device 14a that shares the primary transfer stroke W ₁ which is the section from the temporary centering section Z ₁ to the main centering section Z ₂ and the main centering section Z ₂ to the grinding standby section Z described later.
It is composed of a supply transfer device 14b which shares the secondary transfer stroke W ₂ which is a section up to ₄ .

The unit of each supply moving device 14 is provided with a member for gripping the sawing material A near its left and right ends. Since the pair of gripping portions disposed on the left and right have substantially the same shape, the gripping portions are provided opposite to each other. Therefore, only one gripping portion will be described below.
First, reference numeral 15 is a machine frame of the material supply device 4, and an upper frame 16 is provided above the machine frame. For example, a pair of front and rear guard rollers 17 are provided on the upper frame 16 along the longitudinal direction thereof, and a gripping device 18 is supported on the guide rollers 17.

As shown in an enlarged view in FIG. 3, the gripping device 18 is configured such that various members are mounted on a substantially flat plate-shaped slide frame 19 guided by a guide roller 17, and the slide frame 19 is moved. As an example, the screw block 21 fixed to the slide frame 19 side is screwed to the screw shaft 20 provided to the upper frame 16.

That is, the screw shaft 20 has a screw shaft drive motor M directly connected to the tip thereof, and the slide frame 19 is moved by the rotation of the screw shaft 20. Of course, a clamp body 23 is provided for this moving means, and the clamp body 23 is supported by a clamp body frame 24 which can be swung freely with respect to the slide frame 19.
A clamp body frame 24 including the clamp body 23
Is configured to be rotatable in an upward direction, and is rotated by a rotating cylinder 27 attached to the slide frame 19.

Further, the clamp body frame 24 moves in the horizontal direction together with the slide frame 19 by the guide rails 25 provided in the upper frame 16 being guided by the guide rails 25 formed in the horizontal direction above the slide frame 19. Further, the clamp position in the horizontal direction and the clamp dimension, that is, the approach / separation dimension of the clamp body 23 can be set. The movement in the horizontal direction is performed by the shift cylinder 26. It is made by stretch control.
Further, the lifting shift cylinder 29 is connected to the clamp body 23, and by this expansion and contraction, the clamp body 23 slides up and down along the clamp body guide 28.

Further, such a material supplying device 4 includes a measuring device 3
0 is attached. This is a Kensun device 30b provided in the vicinity of the Kensun device 30a provided in the vicinity of the lifting table 50 provided in the temporary centering unit Z _1, Kasagui device 40 provided in the centering section Z _2, Information is provided so that a predetermined cutting preparation work can be performed by detecting the diameter and center position of the wood entrance surface of the sawing material A, the deviation of the wood grain, and the like. The sizing device 30 uses, as an example, a large number of infrared light emitting elements and semiconductor sensors composed of light receiving elements, which are arranged in parallel, and detects the state in which infrared rays are blocked by the cutting material A. In addition to infrared rays, such a light wave sensor may use laser light, microwaves, ultrasonic waves, X-rays, or the like.

Therefore, the measuring device 30a and the measuring device 30
b is provided at several places along the longitudinal direction of the sawed material A, and the temporary core H ₁ and the main core H ₂ are obtained from the measurement results by the measurement device 30a and the measurement device 30b, respectively. It should be noted that the transfer preparation zone Z is substantially sized to measure the cutting material A, and the cutting material A is preliminarily aligned according to the information of the result up to the stage before being transferred to the material feeding rack 3. Say the range. Further, the transfer preparation zone Z is a portion between the storage table 31 for storing the sawing material A and the material feeding base 3, and when divided in detail, as shown in FIG. ₁ , the main centering section Z ₂ , the take-in zone Z ₃ , and the grinding standby section Z ₄ .

Further, within the range of the temporary centering portion Z ₁ , there is provided an elevating table 50 which elevates and lowers by a suitable means such as a cylinder S and a jack and supports the sawing material A. The lift 50 and the measuring device 30a are collectively referred to as a temporary centering device 4a.

Further, a scraping device 40 is provided within the range of the main centering portion Z ₂ , whereby the sawing material A is grasped at a predetermined rotational position and the sawing material A is measured for measurement. This is operated in order to rotate, and specifically, the snare device 40 is arranged in a position where two units face each other,
As shown in FIG. 5, the shift cylinder 42 causes the slider 43 to move.
The slash-shaped rotary driving part 44 attached to the tip of the slab is driven into the temporary core H ₁ of the sawing material A determined by the sizing device 30a and supported, and the torque actuator 45 is driven in the same direction to drive the grinding. The split material A is rotated. Then, the snare device 40 and the measuring device 30b are collectively referred to as a main centering device 4b.

Here, the sawing material A is rotated by 360 °, and the size and center position of the mouth end surface or the deviation of the grain of the wood are detected by the measuring device 30b, and based on this result, the attitude of the sawing material A is determined. Judging whether or not cutting with the highest yield yields the highest profitability, the main core H ₂ is determined, and then the sawing material A is grasped and transferred by the clamp body 23 and provided on the material feeding base 3. An attitude is set around the main core H ₂ by means of the core-stripping scrap 12, and the cutting process is performed.

Incidentally, as the clamp body 23 for actually gripping the sawing material A, in addition to the above-mentioned embodiment, various modes can be adopted as shown in FIG. 7, for example. 7 (a) and 7 (b) are obtained by changing only the shape of the clamp.
The one shown in (c) is sandwiched by a pair of members that open and close around the same fulcrum.

The material supply device 4 for lumber mills according to the present invention has the specific mechanism as described above, and the method of the present invention will be described below while explaining its operating mode. First, at the start of the work, the sawdust A is sent from the storage table 31 to the lift table 50 located at the lift start position as shown in FIG. Of course, the sawing material A processed here may be a log-shaped raw wood, or may be a flitch material whose two sides are so-called drum-milled. At this position, the elevating table 50 moves upward, and the size measuring device 30a measures the outer diameter size of the material A, for example, in the vicinity of both wood mouths to obtain the provisional core H ₁ . Specifically, in the case of the sawdust A having a small difference between the diameter of the front opening and the diameter of the front opening as shown in FIG. 9 (a), two points of the center of the main opening and the center of the front opening are connected. Virtual line is provisional H ₁
It becomes. Further, in the case of the sawdust material A having a large difference between the diameter of the front mouth and the diameter of the tip mouth as shown in FIG. 9B, or in the case of the bent sawdust material A, the center and the tip of the mouthpiece are Instead of taking an imaginary line connecting the two points with the center of the mouth, an imaginary line suitable for rotation (minimizing the moment of inertia) is obtained and set as the provisional core H ₁ .

The sawing material A for which the provisional core H ₁ is obtained is gripped by the clamp body 23 on the lifting table 50. At this time, the raising and lowering table 5 which has been lifted with the sawing material A placed thereon.
0 is lowered when the diameter of the material A is large when the material A is grasped by the clamp body 23, and is increased when the diameter is small, and the shape of the material A is 0. Thus, the lifting stroke is set appropriately. Supply moving device 14a
The gripping device 18 moves along the guide rail 25 by the rotation of the screw shaft 20, and its center is located on a vertical line with the temporary core H ₁ of the sawing material A placed on the elevating table 50. Stop (see Figure 4). On this move,
The rotating cylinder 27 is contracted so that the clamp body 23 in the moving direction does not hit the sawing material A, and the clamp body frame 2
4 is rotated upward. Next, the rotary cylinder 27 is extended to bring the clamp body 23 into a vertical state, and then the lift shift cylinder 29 is expanded and contracted to set the clamp body 23 at an appropriate position. When the sawing material A is curved with respect to the longitudinal direction, or when the diameter difference between the fore-edge and the fore-edge is large, the lifting / lowering of the clamp body 23 by the lifting / lowering shift cylinder 29 may be left / right different. . Then, the shift cylinder 26 is contracted to bring the clamp bodies 23 close to each other and hold the sawing material A.

The gripping device 18 of the supply moving device 14a that grips the sawing material A moves along the guide rail 25 by the rotation of the screw shaft 20 and moves from the temporary centering portion Z ₁ to the main centering portion Z ₂ . Then, the temporary core H ₁ of the grasped material A is stopped at a position located at the center of the rotary driving part 44 of the scraper device 40 (see FIG. 4). When the snare device 40 supports the sawing material A at this position by the method described later, the supply moving device 14a extends the shift cylinder 26 to separate the clamp body 23, and extends the elevating shift cylinder 29 to extend the clamp body. After raising 23 (when necessary, the rotary cylinder 27 is contracted to rotate the clamp body frame 24 upward), the temporary centering portion Z
Return to ₁ . At this point in time, the elevator table 50 is undergoing the temporary centering operation for the next sawing material A.

On the other hand, when the scraping device 40 supports the cutting material A by driving the rotary driving portion 44 into the temporary core H _{1 of the} cutting material A by extending the shift cylinder 42, the torque actuator 45 causes the cutting material A to move. Is rotated 360 ° with the provisional core H ₁ as the axis of rotation. At this time, the sizing device 30b measures the outer diameter dimension and the like of the sawing material A, and in what posture the sawing material A is ground based on the result, which yields the best yield and raises profitability. To determine the main core H ₂ . When the main core H ₂ is obtained in this way, the holding device 18
The grind material A is once held by the clamp bodies 23 before and after. Next, the gripping device 18 moves back and forth, and the clamp body 23
Moves up and down, and the attitude of the sawdust A is that at the time of sawing. In other words, if you move parallel to the grinding standby unit Z _{4 in} this state,
By striking the driven scrap 41, the attitude of the sawing material A at the time of sawing can be maintained.

The gripping device 18 of the supply moving device 14b that grips the sawing material A moves along the guide rail 25 by the rotation of the screw shaft 20 and moves from the main centering portion Z ₂ to the sawing standby portion Z ₄ . And stops at the position where the main core H ₂ of the ground material A that is gripped is located at the center of the core-cutting snail 12 (see FIG. 4). This position is the movement start position of the material feeding base 3, and since the main core H ₂ at the time of cutting the cutting material A has already been set in the main centering portion Z ₂ , the core-cutting snail 12 immediately operates. All that is required is to fix the sawdust A.

At this time, as shown in FIG. 6, a bearing cylinder 51 having a touch sensor 52 at the tip of the extending portion is positioned below the sawing material A. The support cylinder 51 starts extending when it detects that the sawing material A is located above it by an appropriate means. When the touch sensor 52 comes into contact with the sawdust material A, the extension is stopped and the sawdust material A is substantially supported. This is provided with a plurality of bases in the longitudinal direction of the sawdust A, for example, four bases.

Next, the gripping device 18 of the supply moving device 14b
After contracting the shift cylinder 26 to separate the clamp body 23 and extending the elevating shift cylinder 29 to raise the clamp body 23 (when necessary, the rotary cylinder 27 is contracted to move the clamp body frame 24 upward). (Rotate) and return to the main centering section Z ₂ .

It should be noted gripping feed mobile device 14b device 18挽割standby unit Z ₄ to the present centering section Z ₂ gripping the挽割material A
When the movement to the center is started, the temporary centering part Z ₁ has already completed the temporary centering work of the next material A, and the supply and moving device 14a immediately causes the temporary centering part Z ₁ to perform the main centering. Transfer to section Z ₂ is started.

Then, the sawing material A is subjected to the sawing process from the movement start position in the sawing standby portion Z ₄ toward the band saw machine 2.

[0035]

Other Embodiments The following embodiments can also be adopted based on the technical idea of the present invention. FIG. 8 shows another embodiment of the material supply device for a lumber mill, in which the main centering portion Z ₂ and the grinding standby portion Z ₄ in the previous embodiment are shared. Specifically, in the main centering section Z ₂ and the grinding standby section Z ₄ , the rotary driving section 44 and the centering scraper 12 which provide the same action are shared, and the secondary transfer process W ₂ is deleted. Becomes Further, although the gripping device 18 is moved by the rotation of the screw shaft 20 in the previous embodiment, it may be configured so that the cylinder S bears this as shown in FIG.

[0036]

The present invention has the constitution as described above, and thereby exhibits the following effects. According to the invention as set forth in claim 1 or 5, non-rotating material is sized to measure the trimming material A to obtain a temporary core H ₁ , and then rotational measurement is performed to determine the main core H ₂ of the cutting material A. Therefore, the rotational measurement can be performed smoothly and accurately. According to the invention described in claim 2 or 6, the cutting material A is transferred by a primary transfer step W ₁ that reciprocates between the temporary centering portion Z ₁ and the main centering portion Z ₂ .
Since it is shared by the secondary transfer process W ₂ that reciprocates between the main centering unit Z ₂ and the grinding standby unit Z ₄ , the operating rates of the temporary centering unit Z _{1 and the} main centering unit Z ₂ are Get higher According to the invention described in claim 3 or 7, since the primary transfer stroke W ₁ and the secondary transfer stroke W ₂ have the same stroke and the sawdust A is transferred, the operating rate of the entire apparatus is improved and the apparatus is improved. The configuration is simplified. According to the invention described in claim 4,
In temporary centering, the outer diameter dimension is obtained while raising the cutting material A, and this lifting stroke is set, so that the cutting material A is accurately grasped and moved to the main centering portion Z ₂ . Is done only by translation. That is, according to the present invention, the rotation for the main centering performed around the temporary center H ₁ is performed more smoothly and accurately, and the operating rates of the temporary centering section Z _{1 and the} main centering section Z ₂ are further increased. And the operating rate of the entire apparatus is improved, and the apparatus configuration is simplified.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of a lumbering apparatus to which a material feeding method of the present invention is applied.

FIG. 2 is a side view of the same.

FIG. 3 is an enlarged perspective view showing a holding device.

FIG. 4 is a skeleton side view showing the moving state of the sawdust by the supply moving device, which is divided into a primary transfer stroke and a secondary transfer stroke, and which are shown in the upper and lower sides.

FIG. 5 is an enlarged perspective view of the scraper device.

FIG. 6 is an enlarged vertical front view showing a support plate and a support cylinder.

FIG. 7 is a side view showing several other examples of the clamp body.

FIG. 8 is a side view showing another embodiment of the material supply device in which the driving mechanism of the slide frame and the configuration of the transfer process are different.

FIG. 9 is an explanatory diagram showing the difference in the temporary core based on the difference in the shape of the sawed material.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Sawmill device 2 Band saw machine 3 Feeding rack 4 Feeding device 4a Temporary centering device 4b Main centering device 5 Tire 6 Band saw blade 8 Base 9 Rail 10 Wheel 11 Bearing plate 12 Centering scraper 14 Supply moving device 14a Supply Moving device 14b Supply moving device 15 Machine frame 16 Upper frame 17 Guide roller 18 Grasping device 19 Slide frame 20 Screw shaft 21 Screw block 23 Clamp body 24 Clamp body frame 25 Guide rail 26 Shift cylinder 27 Rotating cylinder 28 Clamp body guide 29 Lifting Shift cylinder 30 sizing device 30a sizing device 30b sizing device 31 Storage table 40 Cassie device 41 Driving Cassie 42 Shift cylinder 43 Slider 44 Rotational driving part 45 Torque actuator 50 Lifting platform 51 Bearing Linda 52 touch sensor A挽割member H ₁ provisional core H ₂ present core M screw shaft drive motor S cylinder Z transfer preparation zone Z ₁ temporary centering section Z ₂ present centering unit Z ₃ capture zone Z ₄挽割standby Part W ₁ Primary transfer stroke W ₂ Secondary transfer stroke

Claims (7)

[Claims] 1. The cutting material is transferred to the movement starting position of the material feeding rack, and after holding the cutting material by the material feeding rack, the feeding rack is moved toward the cutting device to perform a predetermined grinding. In the material supply method during a series of lumbering processes to be performed, when supplying the sawdust material, the sawdust material is grasped and transferred in a suspended state by the supply moving device, and the non-intermediate portion is provided at the temporary centering portion of the feeder device. A method of feeding materials for a sawing machine, characterized in that after slicing is measured by rotation to obtain a temporary core, rotational sizing is performed at a main centering unit to determine a main core of the sawing material. 2. The transfer of the grinding material by the supply moving device is performed by a primary transfer process that reciprocates between the temporary centering unit and the main centering unit and between the main centering unit and the grinding standby unit. 2. A reciprocating secondary transfer stroke.
The method for supplying lumber for a sawmill described in the above. 3. The material supplying method for a lumber mill according to claim 1, wherein the primary transfer stroke and the secondary transfer stroke have the same stroke. 4. The temporary centering portion is characterized in that after the sawing material is raised, the outer diameter dimension is obtained, and the lifting stroke is set based on this result. The method for supplying lumber for a sawmill described in the above. 5. The cutting material is transferred to a movement starting position of the material feeding rack, and after holding the cutting material by the material feeding rack, the feeding rack is moved toward the cutting device to perform a predetermined grinding. In a material supply device during a series of lumbering processes to be performed, a supply moving device including a guide rail and a clamp body, a temporary centering device including an elevating table and a measuring device, a book including a scraper device and a measuring device. A material supply device for a saw mill, comprising a centering device. 6. The supply moving device comprises two units each reciprocating between a temporary centering unit and a main centering unit and between a main centering unit and a grinding standby unit. The material supply device for a lumber mill according to claim 5. 7. Between the temporary centering portion and the main centering portion,
7. The material supply device for a sawmill according to claim 5, wherein the two units that reciprocate between the main centering unit and the grinding standby unit have the same stroke.