JP3266710B2 - Method of transporting plate-like body and apparatus for sawing and drying plate-like body using this transportation method - 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 transporting a plate-like body such as veneer veneer, plywood, laminated veneer by a pair of upper and lower feed rolls. The present invention relates to a sawing device used for transporting and taking out a body, and a drying device employing this transport method in a transport path of a roll dryer.

[0002]

2. Description of the Related Art Heretofore, a pair of upper and lower feed rolls are arranged at an appropriate number of intervals in the transport direction, and the axes of the feed rolls are set orthogonal to the transport direction. Plywood where the feed roll is installed,
To list veneer veneers cut from raw wood or veneer veneers after drying, a transport process for inserting veneer veneers into a cutting device, veneer veneer In the lower part of the upper hot air passage of the heating section that constitutes the roll dryer for plate drying, a conveying path installed for conveying veneer veneer, or sawing the four peripheral edges of plywood after the hot press process And a conveying step of inserting a plywood or a veneer into a sawing device that cuts a veneer from a veneer into a narrow crosspiece.

Conventional feed rolls have a cylindrical shape, and an upper feed roll applies a roll load or a roll own weight to a plate-like body on a lower feed roll via a fluid cylinder, a spring, or the like. Had been attached.

At this time, assuming that a pair of upper and lower feed rolls does not bend in the axial direction and that the plate itself has a uniform thickness, a load applied to the roll or The roll's own weight will be applied linearly, which will be equal at any part in contact with the roll, the linear pressure acting on each part at the unit is the roll load, or the value obtained by dividing the own weight by the line length, kg / cm.

[0005]

However, since the upper and lower feed rolls are supported on both ends, for example, the upper feed roll is placed on the lower feed roll as in the transport path of a roll dryer. Even in a state of riding on its own weight, the lower feed roll has its own weight deflection and load deflection in the lower feed roll, and the upper feed roll has its own weight deflection of the feed roll in the upper feed roll, For example, when a load is applied to both ends of the upper feed roll at a constant pressure with respect to the lower feed roll as in a transporting process of a sawing device, the weight of the roll is reduced along its axis. In addition to the bending, a pressing load is generated on the lower feed roll, so that in any case, the degree of bending of both lower rolls is higher than that of the upper feed roll. There tends to be Hidai, in a normal state, opposing surfaces of the upper and lower pair of feed rolls are not uniformly contact over the axial direction, insufficient load is generated in the central portion of the axial direction.

In this situation, the plate is transported by a pair of upper and lower feed rolls. It is desirable that a linear pressure is evenly applied on a line perpendicular to the transport direction of the plate. Since a load shortage has occurred near the central portion of one set of feed rolls, the plate is transported in a state where the desired linear pressure per unit is not applied to the plate body in the vicinity of the central portion orthogonal to the transport direction. ing.

For example, if a veneer veneer is transported between a pair of upper and lower feed rolls constituting a transport path of a roll dryer, an upper feed roll is locally located at a corner portion orthogonal to the transport direction of the veneer veneer. In this corner, the thickness is reduced, and the upper feed roll is originally supported rotatably on the bearings on both sides, but as if the roll was supported. The position is shifted to the corner of the veneer veneer, that is, inward, and the degree of bending of the lower feed roll increases while the degree of bending of the upper feed roll decreases, Insufficient linear pressure on the plate body in the vicinity of the portion causes unevenness in thickness and uneven drying due to uneven contact heating by rolls on the veneer veneer after drying. Further, when the veneer veneer has a small width and is transported simultaneously in a plurality of rows in a direction perpendicular to the transport direction, the meandering transport due to the difference in the linear pressure applied to each veneer veneer and the meandering transport This also causes adjacent veneer veneers to overlap with each other, which may cause clogging between a pair of upper and lower feed rolls.

On the other hand, if a plywood or veneer laminate is transported between a pair of upper and lower feed rolls constituting a transporting process to a sawing device, the plywood or veneer laminate to be cut between the feed rolls When the sheet passes through, the area in contact with the portion on the line perpendicular to the conveying direction and the upper feed roll decreases, and the line is required for conveying the plywood or veneer laminated material and also resists the cutting resistance. The pressure is subtracted from the expected roll load by the non-contact area, and the pressurizing pressure at the time of sawing conveyance is insufficient, and the contact area with the upper feed roll is unspecified, so that the straight transport In that case, stability is lacking.

[0009]

SUMMARY OF THE INVENTION In view of the above description, the present invention has been made so that the roll load can be obtained so as to obtain a predetermined linear pressure on the plate-like body or a linear pressure close to this linear pressure. Item 1
The transport path is constituted by a pair of upper and lower feed rolls which are arranged at an appropriate number and at an arbitrary interval, and any one of these feed rolls and the axis of the other feed roll are arranged in the transport direction. It is characterized by being inclined at an arbitrary angle.

According to a second aspect of the present invention, the plate is transported to the circular saw before and after the transport direction of the circular saw arranged in the axial direction of the drive shaft, and then the plate after the saw is taken out. For this purpose, the upper and lower pairs of feed rolls are characterized in that the axis of one of the feed rolls and the axis of the other feed roll are inclined at an arbitrary angle with respect to the transport direction.

A third aspect of the present invention is that a blower and a heating element are arranged opposite to each other on both sides of an upper portion of a required number of heating sections to form an upper ventilation passage for hot air, and a conveying device installed at a lower portion of the heating section. The path is constituted by a pair of upper and lower feed rolls arranged at an appropriate number and at an arbitrary interval, and the axis of one of the feed rolls and the axis of the other feed roll are inclined at an arbitrary angle with respect to the transport direction. It is characterized by that.

Furthermore, in the present invention, a blower and a heating element are arranged opposite to each other on both sides of an upper portion of a required number of heating sections to form an upper ventilation passage for hot air, and are installed at a lower portion of the heating section. The transport path is constituted by a pair of upper and lower feed rolls arranged at an appropriate number and at an arbitrary interval, and the axis of one of the feed rolls and the axis of the other feed roll are inclined at an arbitrary angle with respect to the transport direction. Further, the conveying path is curved so that the pair of upper and lower feed rolls are alternately arranged vertically above and below the horizontal direction.

[0013]

The conveying path is constituted by a pair of upper and lower feed rolls arranged at an appropriate number and at an arbitrary interval, and the axis of one of these feed rolls and the axis of the other feed roll are inclined at an arbitrary angle. By arranging the lower feed roll and the upper feed roll in a bending direction, a substantially middle portion of the upper feed roll in the axial direction is mounted on a substantially middle portion of the lower feed roll in the axial direction. In the opposite direction, a plate-like body conveyed by a pair of upper and lower feed rolls can obtain a linear pressure due to a roll load approximately equal to or approximately equal to the roll axis direction. Things.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an apparatus for directly implementing the method of the present invention will be described below with reference to the accompanying drawings. 1 to 3
Shows the mutual positional relationship between an upper feed roll 1 and a lower feed roll 2 showing the basic principle of the present invention. The other feed rolls 1 and 2 are arranged at an arbitrary angle with respect to the axis of the feed rolls 1 and the conveyance direction.
It is not necessary that any of the axes 2 is the same as the direction orthogonal to the transport direction. When the upper and lower sets of feed rolls 1 and 2 are viewed in a plane, the directions of the axes are not identical to each other. The upper and lower set of feed rolls 1 and 2 are arranged at an appropriate number of intervals and form a transport path 3.

FIG. 4 shows a pair of upper and lower feed rolls 1 and 2.
This shows another embodiment of the basic type in which any one of the shaft rolls is inclined at an arbitrary angle with respect to the shaft rolls of the other feed rolls 1 and 2, and the lower feed roll of the feed rolls 1 and 2 is shown. The axis of the roll 2 is arranged orthogonal to the transport direction, and the axis of the upper feed roll 1 is inclined at an arbitrary angle with respect to the transport direction with respect to the lower feed roll 2.

FIG. 5 similarly shows an arrangement in which the axis of the upper feed roll 1 of the feed rolls 1 and 2 is arranged perpendicular to the conveying direction, and the lower feed roll 2 is arranged with respect to the upper feed roll 1. An example is shown in which the axis is inclined at an arbitrary angle with respect to the transport direction, and the directions of inclination of the axis with respect to the lower feed roll 2 between the upper feed rolls 1 adjacent to each other in the transport direction are opposite to each other. .

As shown in FIG. 6, a gang ripper, which divides the plate-like body 4 into small widths such as a sawing plate, an LVL, and a particle board, is provided with a plurality of circular saws 5 installed in parallel with the transport direction. Although not shown, the feed rolls 1, such as a circular saw 5, which is a double saw that uses the plate-shaped body 4 as a plywood and cuts the four peripheral edges thereof and is installed on both sides in the transport direction.
2 illustrates an example in which the transport path 3 formed by the cutting device 2 is arranged in front of and behind a sawing device such as a double saw or a gang ripper. In the illustrated example, an upper surface plate 7 and a lower surface plate 8 are arranged opposite to each other in the conveying direction of the circular saws 5 arranged in multiple rows in the direction of the axis of the drive shaft 6 at an arbitrary interval vertically. Each of the platens 7 and 8 has the axis of one of the feed rolls 1 and 2 disposed at an angle to the other axis at an arbitrary angle with respect to the transport direction. For example, on the lower stool 8, the right shaft portion of the lower feed roll 2 is supported in a horizontal plane perpendicular to the transport direction by being inclined clockwise at a certain angle, and the upper stool 7 is supported by the right shaft of the upper feed roll 1. The part is inclined at the same angle in the counterclockwise direction in a horizontal plane perpendicular to the transport direction, and is supported by a spring or a fluid cylinder 9 as shown in the drawing so as to be freely pressed. Therefore, a pair of upper and lower feed rolls 1 and 2 intersect at the longitudinal direction.

The transport path 3 formed by the feed rolls 1 and 2 can be adopted for a roll dryer 10 for drying veneer veneer. The one shown in FIG.
8 is a hot air vertical circulation type dryer in which a blower is installed on one side in the conveying direction of the roll dryer 10 and a heating element is installed on the other side to blow hot air in the conveying direction. A hot air horizontal circulation type roll dryer 10 that installs a blower on one side of a heating section 11 and a heating body on the other side to blow hot air perpendicular to the transport direction. In the lower part of the upper hot air passage 12 of the heating section 11, the axis of one of the feed rolls 1 and 2 is arranged to be inclined at an arbitrary angle with respect to the other axis and the conveying direction. Is a crossing state adopted in the above-described sawing device. Although not shown, the axis of the lower feed roll 2 of the feed rolls 1 and 2 is arranged perpendicular to the transport direction, and the axis of the upper feed roll 1 is set with respect to the lower feed roll 2. The core is inclined at an arbitrary angle in the unit heating section 11, and the inclination direction of the axis of the upper feed roll 1 in the adjacent next heating section 11 is adjusted to the direction of the feed roll 2 above the preceding heating section 11. The direction of inclination of the axis may be opposite, so that a single heating section 1
In 1, the veneer veneer 7 conveyed by a pair of upper and lower feed rolls 1 and 2 is inclined and conveyed to one side in the conveying direction along the inclination angle of the upper feed roll 2, Since the inclination direction of the upper feed roll 2 is set in the reverse direction in the next heating section 11, the deviation with respect to the transport direction is corrected in the reverse direction.

The roll dryer 10 normally assembles a pair of U-shaped vertical beams 13 having a pair of upper and lower feed rolls 1 and 2 at an appropriate interval in the transport direction of the plate-like body 4. The vertical beams 13 are provided with a plurality of sets of upper and lower feed rolls 1 and 2 in the vertical direction via bearings 14.

In FIG. 9, the transport path 3 formed by the feed rolls 1 and 2 is employed in a roll dryer 10 for drying veneer veneer similarly to the embodiment shown in FIGS. 7 and 8. A pair of upper and lower feed rollers 1 and 2 are arranged so as to be alternately arranged vertically above and below a horizontal plane in the transport direction so as to be out of phase with each other, and the transport path 3 is formed into a curved shape having a height difference. It is.

The upper and lower pairs of feed rolls 1 and 2 in each of the above embodiments are arranged at an appropriate number in the transport direction at an arbitrary interval, and constitute a transport path for the plate-like body 4. But usually each feed roll 1, 2
If one of them is the drive side, and the lower feed roll 2 is the drive side, a motor is attached to one shaft end of the lower feed roll 2 and the lower feed roll 2 is driven individually one by one. Alternatively, as described above, when the transport path 3 of the roll dryer 10 is arranged such that the axis of the lower feed roll 2 is perpendicular to the transport direction, as shown in FIGS. A chain sprocket 15 is attached to each shaft end, and a chain 16 is stretched between the chain sprockets 15, and the chain 16 is rotated by a separately installed motor to transmit the drive to each lower feed roll 2. Let it. On the other hand, a gear 17 is attached to the other shaft end of each lower feed roll 2, and the gear 17 and the gear 17 attached to the shaft end of the upper feed roll 1 mesh with each other, A pair of upper and lower feed rolls 1 and 2 are rotated in opposite directions to nip and convey the plate-like body 4.

At this time, the axis of each feed roll 2 on the driving side in the illustrated example is inclined at an arbitrary angle in a horizontal plane in a direction orthogonal to the conveying direction, and as a result, each chain sprocket 15 or gear 17 is moved in the conveying direction. However, it is sufficient to manufacture a dedicated chain sprocket or a dedicated gear along the inclined state of the axis of each feed roll 2. Even when the axis is inclined, there is usually a slight gap between the chain link 18 and the chain sprocket 15 constituting the chain 16, and the chain link 18 and the chain sprocket 15 are suspended in parallel to the transport direction. Instead, it is suspended in a state of being inclined in the gap, but according to experiments, there is no problem in transmission of drive. Similarly, regarding the transmission of the vertical drive between the feed rolls 1 and 2, since the upper and lower gears 17 are not parallel to the transport direction, the teeth of the gear 17 may mesh over the entire width. However, there is some play in each gear 17 to be meshed, and each tooth meshes with a so-called one-sided contact state in a part of the width direction, so that drive transmission is possible. .

In each of the above-described embodiments, the feed rolls 1 and 2 comprising a pair of upper and lower parts constituting the transport path 3 are provided with the axis of one of the feed rolls 1 and 2 and the other. The basic principle is that the axes of the feed rolls 1 and 2 are inclined at an arbitrary angle perpendicular to the transport direction, and by arranging the axes at an arbitrary angle, the axial direction of the lower feed roll 2 is reduced. Feed roll 1 in the middle of
In the axial center direction, the substantially middle portion intersects in a plane.
Therefore, the bending directions of the lower feed roll 2 and the upper feed roll 1 are reversed, and the plate-like body 4 conveyed by the upper and lower feed rolls 1 and 2 is moved in the axial direction of the rolls. If a linear pressure due to the roll load is obtained over the uniform distribution or the roll load approximate thereto, and if the linear pressure approximated to the uniform distribution or the uniform distribution is obtained, the straightness of the plate-shaped body 4 at the time of conveyance is improved. Will be guaranteed.

Further, the transporting process arranged before and after the sawing device such as the double saw and the gang ripper shown in FIG.
The axis of any one of the feed rolls 1 and 2 is arranged at an angle to the other axis, and the upper feed roll 1 can be pressed by the fluid cylinder 9 against the lower feed roll 2. Therefore, the plate-like body 4 carried into the sawing device is provided with a linear pressure due to the roll load which is equal to or approximately equal to the roll axis direction in the axial direction of the roll, so that the straight transportability is first guaranteed. Next, the plate-shaped body 4 is cut into small pieces by circular saws 5 arranged in multiple rows in the axial direction of the drive shaft 6. Accompanying this, stresses such as lifting and turning are likely to occur, but the pressing pressure from the upper feed roll 1 on the line perpendicular to the transport direction of the plate-like body 4 is equal or approximately equal. At the start of sawing of the plate-like body 4, at the start of the cutting of the plate-like body 4, the pair of upper and lower feed rolls 1 and 2 installed at the front of the cutting device raises the plate-like body 4 due to the cutting resistance. In addition, the plurality of small pieces after the sawing are equally distributed orthogonally to the transport direction by a pair of upper and lower feed rolls 1 and 2 installed at the rear of the sawing device, or Straight line cutting is possible while preventing the floating caused by the cutting resistance of each small split material with the linear pressure approximated to the uniform distribution. As well as,
It guarantees straight transportability.

Further, the transport path 3 of the roll dryer 10 for veneer veneer drying shown in FIG. 7 is also arranged such that the axis of one of the feed rolls 1 and 2 is inclined at an arbitrary angle with respect to the other axis. In the same manner as described above, the roll load of the upper feed roll 1 intervenes on a line perpendicular to the transport direction of the plate-like body 4 as a uniform distribution or a linear pressure approximating the uniform distribution. Guaranteed. The plate-like body 4 is conveyed with its fiber direction parallel to the conveyance direction. The thickness reduction of the corners of the outer upper surface perpendicular to the conveyance direction is eliminated, and the small width of the plate-like body is reduced. Even if a plurality of rows 4 are simultaneously transported in the transport direction, the linear pressure applied to each plate-like body 4 is substantially the same, so that not only the meandering transport is eliminated but also the individual plates mainly generated due to the meandering transport. It is possible to eliminate the overlap between the state bodies 4 and the clogging between the upper and lower pairs of feed rolls 1 and 2.

Therefore, as in the roll dryer 10 shown in FIG. 9, the transport path 3 in which the axis of one of the feed rolls 1 and 2 is inclined at an arbitrary angle with respect to the other axis is provided.
As described above, if a pair of upper and lower feed rollers 1 and 2 are arranged alternately up and down with respect to the horizontal plane in the transport direction so that adjacent ones are shifted from each other in phase and formed into a curved shape having a height difference. On the line perpendicular to the conveying direction of the plate-like body 4, the roll load of the upper feed roll 1 is interposed as a uniform distribution or a linear pressure approximating the uniform distribution, so that the straight conveyance is guaranteed and the meandering conveyance is performed. The overlap between the individual plate-shaped members 4 and the clogging between the pair of upper and lower feed rollers 1 and 2 are eliminated, and the contact area between the pair of upper and lower feed rollers 1 and 2 and the front and rear surfaces of the plate-shaped member 4 is increased. Thus, the drying time can be shortened. In addition, on both sides of the plate-shaped body 4 in the transport direction, an accompanying effect of improving the rate of runaway after drying can be expected as the roll contact area increases during transport.

[0027]

As described above, according to the present invention, the transport path is constituted by a pair of upper and lower feed rolls which are arranged at an appropriate number of intervals, and one of the feed rolls and the other of the feed rolls are arranged. Since the axis of the feed roll is inclined at an arbitrary angle with respect to the conveying direction, the plate-shaped body conveyed by the feed roll from the upper and lower sets is uniformly distributed in the axial direction of the roll. A linear pressure due to the approximate roll load is obtained, and the straightness of the plate-shaped body during conveyance is guaranteed.

Further, before and after the transport direction of the circular saw arranged in the axial direction of the drive shaft, the plate-like body is transported to the circular saw, and then a pair of upper and lower for removing the sawed plate-like body. Because the feed roll is inclined at an arbitrary angle with respect to the transport direction, the axis of one of the feed rolls and the axis of the other feed roll are inclined at an arbitrary angle with respect to the transport direction. The pressing pressure from the roll is evenly distributed or is present as a linear pressure approximating the uniform distribution, and when starting to cut the plate-like body, the plate is set by a pair of upper and lower feed rolls installed in front of the cutting device. While preventing the lifting of the body due to the cutting resistance, and after the cutting, a pair of upper and lower feed rolls installed at the rear of the cutting device have a uniform distribution, or the like, orthogonal to the transport direction. A linear pressure approximating the distribution intervenes to prevent lifting due to sawing resistance. Thereby enabling et straight sawing, it guarantees the straight transportability.

Further, a blower and a heating element are disposed opposite to each other on both upper sides of a required number of continuous heating sections to form an upper ventilation path for hot air. Is arranged with a pair of upper and lower feed rolls, and the axis of one of the feed rolls and the axis of the other feed roll are inclined at an arbitrary angle with respect to the transport direction. Straight transport is guaranteed, and even if a plurality of rows of plate-like bodies are simultaneously transported, the linear pressure applied to each is almost the same, so that not only the meandering transport is eliminated, but also mainly due to the meandering transport It is possible to eliminate individual overlaps and jams between a pair of upper and lower feed rolls.

Further, a blower and a heating element are disposed opposite to each other on both upper sides of a required number of the heating sections, thereby forming an upper ventilation path for hot air, and a suitable number of conveying paths provided below the heating section. And the upper and lower pairs of the upper and lower feed rolls are inclined at an arbitrary angle with respect to the transport direction. The transport path is curved so that the feed rolls are alternately up and down with respect to the horizontal direction, so the contact area between the upper and lower set of feed rolls and the front and back surfaces of the plate-like body is increased, and the drying time is shortened. In addition, on both sides in the transport direction of the plate-like body, an accompanying effect of improving the rate of runaway after drying can be expected as the roll contact area increases during transport.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a plan view showing another embodiment of the present invention.

FIG. 5 is a plan view showing another embodiment of the present invention.

FIG. 6 is a side view showing one embodiment of the sawing device of the present invention.

FIG. 7 is a side view showing an embodiment of a drying apparatus of a hot air vertical circulation type according to the present invention.

FIG. 8 is a side view showing an embodiment of a hot air horizontal circulation type drying apparatus of the present invention.

FIG. 9 is a side view showing another embodiment of the drying apparatus of the present invention.

[Explanation of symbols]

1 ... upper feed roll, 2 ... lower feed roll 2, 3, ...
Conveyance path, 4 plate-shaped body, 5 circular saw, 6 drive shaft, 7 upper platen, 8 lower platen, 9 fluid cylinder, 10 roll dryer, 11 heating section 11, 12 upper hot air Ventilation path, 13 vertical beam, 14 bearing, 15 chain sprocket, 16 chain, 17 gear, 18 chain link 1
8.

Continuation of the front page (56) References JP-A-51-29798 (JP, A) JP-A-56-52306 (JP, A) JP-A-51-6686 (JP, U) (58) Fields investigated (Int) .Cl. ⁷ , DB name) B65G 13/00-13/12 B27D 25/00 B65H 5/06 B65G 47/22-47/32

Claims (4)

(57) [Claims] 1. A transport path is constituted by a pair of upper and lower feed rolls arranged at an appropriate number of intervals and an axis of one of these feed rolls and the axis of the other feed roll are set in the transport direction. At an arbitrary angle with respect to
The set of upper and lower feed rolls has almost the middle part in the axial center direction.
A method for transporting a plate-like body, characterized by crossing . 2. A set of upper and lower sets for transporting a plate to a circular saw before and after a transport direction of a circular saw arranged in the axial direction of a drive shaft, and then taking out the plate after sawing. The feed roll, the axis of one of the feed rolls and the axis of the other feed roll are tilted at an arbitrary angle with respect to the transport direction , and tilted.
The set of upper and lower feed rolls is almost in the middle of the axial direction.
A plate-shaped body cutting device characterized by crossing . 3. An air blower and a heating element are disposed on both sides of an upper portion of a required number of connected heating sections to form an upper ventilation path for hot air, and a suitable number of conveying paths provided at a lower portion of the heating section are provided. It consists of a pair of upper and lower feed rolls placed and placed, and the axis of one of the feed rolls and the axis of the other feed roll are inclined at an arbitrary angle with respect to the transport direction, and the upper and lower inclined A set of feeder
A drying device for a plate-like body, characterized in that the middle portion in the direction of the axis intersects . 4. A blower and a heating element are disposed on both sides of an upper part of a required number of connected heating sections to form an upper ventilation path for hot air, and a suitable number of conveying paths provided at a lower part of the heating section are provided. It consists of a pair of upper and lower feed rolls placed and placed, and the axis of one of the feed rolls and the axis of the other feed roll are inclined at an arbitrary angle with respect to the transport direction, and the upper and lower inclined A set of feeder
A plate-like body characterized in that the transport path is curved so that the middle portion in the axial direction intersects and the pair of upper and lower feed rolls are alternately arranged vertically with respect to the horizontal direction. Drying equipment.