JPH115620A - How to align bars - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method which is simple in formation and can certainly and about fixedly true up even the directions of long bar-shaped articles under compact formation. SOLUTION: Two rolls 2, 3 are oppositely arranged in an about horizontal posture with a specified gap G provided, and as each of rolls 2, 3 is rotated in a direction where each of their upper faces approaches toward the fellow roll, bar-shaped articles W...W transfered by a transfering device 1 are dropped between the rolls 2, 3 to make force toward the gap G act on a contact portion between the bar-shaped article W nonparallel to the axial direction of the rolls 2, 3 and the rolls 2, 3 for correcting the posture of the bar-shaped article and moreover dropping it through the gap G.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for aligning rods, and more particularly to a method suitable for aligning wood or the like that has been split or cut into elongated strands.

[0002]

2. Description of the Related Art In recent years, in order to solve the low yield of lumber products traditionally used as wood-based structural materials and the dispersion of strength performance due to the presence of knots and the like, timber has recently been elongated. By splitting along the direction, that is, the fiber direction of the tree, applying a large number of uncured thermosetting resins to the splitting material, and heating and pressing, a thick plate material for wood structures and structures There has been proposed a method of obtaining a wood-based composite material, so-called engineering wood, which can be used as a pillar material and a beam material (see, for example, JP-A-7-195313).

[0003] In such engineering woods, it is known that if the split pieces or cut pieces are aligned in one direction and formed, a pillar material or a beam material which is preferable in terms of strength can be obtained. It has been considered difficult to quickly and easily align all split or cut pieces in one direction during the process.

[0004] As a method for imparting directionality to such a rod-like material such as a split piece during the transportation process, there is a method of using a vibrating device or a grid in the middle of a rod-like material transportation device. Directivity is not always sufficiently provided, and there are drawbacks such as clogging and breakage of a rod-shaped material.

On the other hand, Japanese Patent Application Laid-Open No. 47-31368 discloses a method or an apparatus for imparting directionality to a rod-shaped object without causing clogging or breakage and with a simple structure. This proposal proposes to supply a bar to the top of a chute having a concave surface that gradually curves downward, thereby sliding a number of bars down the concave surface and placing each bar on a conveyor that moves away from the concave surface. Bar-shaped objects are arranged in a mat-like shape.

[0006]

The technique described in Japanese Patent Application Laid-Open No. 47-31368 has the advantage that the direction can be imparted without damaging the material under a very simple structure. On the other hand, there are the following disadvantages due to the principle of the proposed technology.

That is, the principle of the proposed technique is that, for a rod-shaped object oriented in a direction different from the central axis of curvature of the concave surface, both ends of the rod are bridged to the concave surface while sliding down. The direction is parallel to the concave curvature axis so as to be in harmony. Therefore, in order to give sufficient directionality to the rod-shaped object, the radius of curvature of the concave surface must be increased as the length of the rod-shaped object becomes longer. There is a disadvantage that it becomes difficult to incorporate.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method capable of ensuring that the directions of the rods can be made substantially uniform in a simple configuration and with a compact configuration even if the rods are long. is there.

[0009]

According to the first aspect of the present invention, there is provided a method for aligning the orientation of a rod-shaped object, wherein the object is placed in an arbitrary direction as illustrated in FIG. This is a method of aligning a large number of rods W,... W conveyed by the conveyance device 1 in a substantially constant direction, in which a predetermined gap G is opened, and two rods W are opposed to each other in a substantially horizontal posture. While rotating the rolls 2 and 3 so that their respective upper surfaces approach the counterpart roll side, the rods W,... W conveyed by the conveying device 1 between the rolls 2 and 3 are dropped. Can be Further, the method of aligning the directions of the rod-shaped objects according to the second aspect of the invention is a method of using two belt conveyors 20 and 30 instead of the two rolls 2 and 3 as illustrated in FIG. The belt conveyors 20, 30 are arranged so as to face each other with a predetermined gap G therebetween, and are driven so that their transport directions are closer to each other.
It is characterized by dropping the bar-shaped objects W,.

Here, two belt conveyors 20, 30
When using the belt conveyor, as shown in FIG. 3, it is preferable to arrange the respective belt conveyors 20 and 30 so as to be V-shaped when viewed from the side.

According to the first aspect of the present invention, when the rolls 2 and 3 which are opposed to each other at an interval are rotated in the above-described directions, the object which comes into contact with the upper surface of each of the rolls 2 and 3 is It receives the force of being caught between the three.

Therefore, when the rod-shaped material W is dropped between the rolls 2 and 3, if the rod is oriented along the axial direction of the rolls 2 and 3, it passes through the rolls 2 and 3 as it is. Fall down or roll one or two
The object that has fallen upwards is guided by the gap G formed therebetween while keeping its posture substantially, and falls downward. On the other hand, when the rod-shaped material W that does not follow the axial direction of the rolls 2 and 3 falls, one end of the rod W comes into contact with the upper surface of one of the rolls 2 or 3, or one end is one roll and the other end is the other roll. Is in a state of contacting the rolls, that is, a state of straddling the rolls 2 and 3. However, since the contact portion receives a force in a direction in which the rolls are wound between the rolls 2 and 3, the force is applied in the axial direction of the rolls 2 and 3. After the posture is corrected so as to follow, it is guided between the rolls 2 and 3 and falls downward.

Therefore, each of the rods W,..., W which has been transported in a random direction by the transport device 1 and has fallen between the rolls 2, 3 does not come into contact with the rolls 2, 3 without being brought into contact with the rolls 2, 3.
It falls down through the gap G between the rolls 2 or 3 or contacts the rolls 2 and / or 3 and the posture thereof is corrected so as to be along the axial direction of the rolls 2 and 3 and then the rolls 2 and 3 Since the rods W are guided downward by the gap G and fall down, and the directions of all the rods W are aligned in the axial direction of the rolls 2 and 3, for example, another transport device 4 is disposed below the gap G.
Are arranged, the bar-shaped objects W... W having a uniform direction are supplied onto the transport device 4 and the line can be easily formed.

According to a second aspect of the present invention, the two belt conveyors 20 and 30 have the same function as the two rolls 2 and 3 of the first aspect of the present invention. The portion contacting the belt conveyors 20 and 30 receives a force directed toward the gap G provided between the belt conveyors 20 and 30 so that the posture thereof is in a direction orthogonal to the transport direction of the belt conveyors 20 and 30. After being corrected,
It falls downward through the gap G. In the configuration according to the second aspect of the present invention, as compared with the case where the rolls 2 and 3 are used, the area for receiving the bar-shaped objects W... W is increased, so that the area outside the system, that is, outside the belt conveyors 20 and 30. The possibility of spilling is reduced.

In the invention according to claim 3, the posture of the belt conveyors 20, 30 is V-shaped when viewed from the side, so that a function as a hopper is added, and the rod-like shape which has fallen on the belt conveyors 20, 30 is added. There is an advantage that the material W... W can be more smoothly guided into the gap G and the processing speed can be improved. When a hopper having a mere slope is used instead of the belt conveyors 20 and 30, the bar-shaped objects W ... W having random postures cannot be aligned by blocking each other.

Here, the rod-like object referred to in the present invention is, for example, a material cut or split from a plywood, a plate material or a rod material, and having a sufficiently long length compared to its cross-sectional dimension. Further, as shown in FIG. 4, the rod-shaped object in the present invention is not only a straight object W1, but also a bent object W2, a twisted object W3, a sharp end face W4, and a curled object W4.
5 and so on.

The method of the present invention is suitable for a case where these rods are continuously or directly conveyed from a previous step by a conveyor such as a belt conveyor. The relationship between the directions of the rolls 2 and 3 and the belt conveyors 20 and 30 is not particularly limited. For example, it is preferable that the paper is transported from a direction perpendicular to the axes of the rolls 2 and 3, but it may be transported from a direction parallel to the axes of the rolls 2 and 3.

Further, in the present invention, it is desirable that the length of the rolls 2 and 3 or the width of the belt conveyors 20 and 30 is approximately equal to the maximum length of the target bar-shaped material W. If the length of the rolls 2 and 3 or the width of the belt conveyors 20 and 30 is extremely shorter than the length of the bar W, the rolls 2 and 3 or the belt conveyors 20 and 30 fall outside the apparatus without being placed on the belt conveyors 20 and 30. It is not preferable because it may be caused. Conversely, the length of the rolls 2 and 3 or the belt conveyors 20 and 3
Although the width of 0 may have a margin with respect to the length of the bar-shaped object W, it is useless that it is too long.

When the rolls 2 and 3 are used, the diameter thereof is not particularly limited. However, if the rolls 2 and 3 are too thick, the apparatus becomes large, which is not preferable. In addition, if the rolls 2 and 3 and the rod-shaped material W slide too much, the function of imparting directionality is reduced. Therefore, the surfaces of the rolls 2 and 3 do not require a high-level finish such as a mirror surface. It is preferable to apply rubber or the like to the rubber to increase the coefficient of friction. This is the same when the belt conveyors 20 and 30 are used.

Between rolls 2 and 3, or belt conveyor 2
The width dimension of the gap G formed between 0 and 30 needs at least the thickness (width) of the rod-shaped object + α so that the rod-shaped object W can pass therethrough.

In the present invention, the rods W ..
3 drop, or belt conveyor 20, 30
To drop in between does not necessarily mean to drop toward the gap G, but it is sufficient to drop toward the vicinity.

Specifically, in FIG. 1 and FIG. 2, the upper part of the roll 2 or the upper part of the belt conveyor 20 on the side close to the conveying device 1 or the slightly before the roll 2 or slightly before the end of the belt conveyor 20. It is preferable that both are arranged so that the end of the transport device 1 is located. (Action) The rod-shaped object W in the invention according to each of the above claims.
A point which should be particularly noted in the posture correcting operation of W is that, in principle, it is not affected by the length of the bar-shaped object W. Therefore, even if the bar-shaped object W becomes long as in the above-described proposed technique, There is no need to increase the height of the device. Further, since the rod-shaped object W is not particularly restricted, there is no possibility that the rod-shaped object W is damaged similarly to the above-mentioned proposed technology.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied and the directions of rod-like objects are actually aligned will be described below along with comparative examples.

(Embodiment 1) FIG. 1 schematically shows the mechanism used in this embodiment. Thickness 3mm, width 10mm, length 100 obtained by cutting lauan plywood in the previous process
A 0 mm rod W was placed on the belt conveyor 1 in a random direction and transported in the direction indicated by the arrow A in the figure. Below the tip of the belt conveyor 1, two rolls 2, 3
Are horizontally and in parallel with each other, with a gap G opened between them, and opposed to each other, and as shown by arrows B2 and B3 in the figure, the upper surfaces of the rolls 2 and 3 are rotated so as to approach the partner roll side,
The rod-like materials W ... W conveyed by the belt conveyor 1 fall between the rolls 2 and 3.

Further, further below the rolls 2 and 3,
In the next step, a belt conveyor 4 for transporting the rods W ... W was arranged and transported in the direction shown by the arrow C in the figure. The height difference between the conveyor surfaces of the belt conveyors 1 and 4 is 50.
0 mm.

When the diameter of each of the rolls 2 and 3 is 50 mm, the length is 1200 mm, and the number of rotations is 360 rpm,
All of the rods W... W are aligned in a direction substantially along the central axis of the rolls 2 and 3 via the gap G and dropped onto the belt conveyor 4.

(Embodiment 2) FIG. 2 schematically shows the mechanism used in this embodiment. This example is characterized in that the belt conveyors 20 and 30 are used instead of the rolls 2 and 3. That is, a gap G is opened below the front end of the belt conveyor 1, which is exactly the same as that of the first embodiment, and the two belt conveyors 20, 30 are opened.
Are arranged facing each other, and these belt conveyors 20 and 30 are
As shown by arrows D20 and D30 in the figure, the driving is performed so that the conveying direction is directed to the other side, and the bar-shaped objects W... W conveyed by the belt conveyor 1 are two belt conveyors 2.
It was made to fall between 0 and 30.

The point that a belt conveyor 4 for transporting the bar-shaped objects W... W to the next process is provided below the belt conveyors 20 and 30 is the same as that of the previous example, and each transport surface of the belt conveyors 1 and 4 is provided. The height difference between them was also 500 mm.

Further, the rod-shaped material W is exactly the same as the previous example,
The belt conveyors 20 and 30 have a width of 1200 mm and a length of 5 mm.
.. W were driven at a belt speed of 56 m / min., And all of the rods W ... W were aligned on the belt conveyor 4 via the gap G in a direction perpendicular to the conveying direction of the belt conveyors 20 and 30, and dropped onto the belt conveyor 4. .

(Comparative Example) A mechanism as schematically shown in FIG. 5 to which the technique proposed in JP-A-47-31368 was applied was used.

That is, the concave chute 5 is disposed below the end of the belt conveyor 1 which is exactly the same as the first and second embodiments, and the bar-shaped objects W conveyed by the belt conveyor 1 are arranged.
W was dropped near the upper end of the concave chute 5. Further, in consideration of the posture of the concave chute 5 and the arrangement of the belt conveyor 4, the rod-shaped object W which slides down the concave chute 5 so that the lower end of the concave chute 5 is along the conveying surface of the belt conveyor 4. W was placed on the belt conveyor 4.

The test was performed by using the same rod W as in Examples 1 and 2 and changing the radius of curvature of the concave chute 5 variously. In order to make the orientation almost the same as in the first and second embodiments, the radius of curvature of the concave chute 5 is set to 2000 mm.
Therefore, it was confirmed that the height difference between the conveyor surfaces of the belt conveyors 1 and 4 was required to be at least 2000 mm or more.

[0033]

As described above, according to the present invention, two rolls which are opposed to each other in a substantially horizontal position with a predetermined gap are rotated so that the upper surfaces thereof approach the counterpart roll side. Dropping the rod-shaped object conveyed by the conveying device between these rolls, or disposing two belt conveyors facing each other with a predetermined gap, and the conveying direction is set to the direction approaching each other. While being driven so as to drop the bar-shaped object conveyed by the conveyor between these belt conveyors, the bar-shaped object was formed between the roll or the belt conveyor at the contact portion with the roll or the belt conveyor. After receiving the force toward the gap, as a result, after the posture of the bar-shaped object is aligned in parallel with the roll axis, or in the direction orthogonal to the conveying direction of the belt conveyor, Since it drops downward through the gap,
With a simple and compact structure, and without damaging the bar, the bar in any direction can be reliably aligned in a certain direction.

From the above, the method of the present invention is applied to, for example, a manufacturing process of engineering wood in which split pieces or cut pieces of wood are integrated and bound with resin.
The direction of the split pieces or cut pieces can be surely aligned on the line, and therefore, it can be useful for efficient production of engineering wood excellent in strength.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of a mechanism for aligning the direction of a bar used in Example 1.

FIG. 2 is a schematic explanatory view of a mechanism for aligning the direction of a bar used in Example 2.

FIG. 3 is a schematic explanatory view of a modification of the mechanism in FIG. 2;

FIG. 4 is an explanatory view of a rod-like material whose orientation is aligned by the method of the present invention.

FIG. 5 is a schematic explanatory view of a mechanism for aligning the direction of a bar used in a comparative example.

[Explanation of symbols]

 1 Belt Conveyor 2, 3 Roll 4 Belt Conveyor 20, 30 Belt Conveyor W Bar

Claims (3)

[Claims] 1. A method for aligning a large number of rod-like objects conveyed by a conveying device in a state of being placed in an arbitrary direction in a substantially constant direction, wherein a predetermined gap is opened and a substantially horizontal posture is provided. Wherein the two rolls opposed to each other are rotated so that their respective upper surfaces approach the counterpart roll side, and the rod-like material transported by the transport device between these rolls is dropped. A way to align things. 2. A method in which two belt conveyors are used in place of the two rolls, and the respective conveyors are arranged facing each other with a predetermined gap therebetween, and their transport directions are directed to approach each other. A method of aligning the directions of the rod-shaped objects, wherein the rod-shaped objects conveyed by the conveying device are dropped between the belt conveyors while being driven. 3. The method of claim 2, wherein the two belt conveyors are arranged in a V-shape when viewed from the side.