JPH03182301A - Automatic classifying device for timber - Google Patents

Abstract

PURPOSE:To permit the dropping of timbers having a predetermined size and the other timbers necessitating recutting work in the directions of a predetermined side surely by a method wherein the timbers are positioned by a position regulating means on a pair of corresponding receiving boards which are being advanced to a direction separating from a sawmill, immediately before the receiving boards are moved and deformed into a chevron condition. CONSTITUTION:A timber 26, having a predetermined size, and another timber 27, necessitating recutting work, are shifted onto a pair of left and right receiving boards 12A.12B, which are in the same plane. The receiving boards 12A.12B are advanced to a direction, in which they are separated from a sawmill A, position regulating arms 24A.24B are driven by respective cylinders 25 so as to be pivoted upward, the timber 26 having a predetermined size and the timber 27 necessitating the recutting work are lifted once toward a center 13 and, then, respective timbers 26.27 are positioned on the receiving board 12A.12B. Respective position regulating arms 24A.24B are pivoted to a lower waiting position again, the inner end of the receiving board 12A is elevated about the supporting point of a guide shaft 15 and the inner end of the other receiving board 12B is lifted up about the supporting point of the guide shaft 19, the receiving boards 12A.12B are deformed so as to be in a chevron type whereby the timber 26 having the predetermined size drops along the slanted surface of the receiving board 12B while the timber 27, necessitating recutting work, drops automatically along the slanted surface of the receiving board 12A.

Description

[Detailed description of the invention] r Industrial application field The present invention is a method for converting wood cut with a band saw, circular saw sawmill, etc. into wood cut into predetermined dimensions and wood that requires re-cutting. , relates to an automatic sorting device that can sort reliably.

``Prior art'' As a conventional automatic sorting device of this type, for example,
There is one shown in Japanese Patent No. 147701.

Although the conventional sorting device is not specifically illustrated.

It is installed on the wood delivery side of a sawmill, and is equipped with a pair of left and right receivers whose opposing inner ends are rotatably connected, and a push-up mechanism that holds one of the pair of left and right receivers from a cylinder, etc. By connecting and lifting one of the receivers upwards,
A pair of left and right receivers can be moved and transformed into a chevron shape for sorting wood, and conversely, by lowering the receiver on the - side, the pair of left and right receivers can be moved to a flush state for placing wood. It has a deformable structure, and the movement and deformation of the receiver is all automatically performed by electrical control.

During actual operation, the pair of left and right receivers are moved and deformed so that they are flush with each other, and when the wood cut by the sawmill is transferred onto both receivers, the pair of left and right receivers is shaped like a chevron. A piece of wood that has been cut to a predetermined size and moved onto the other receiving board is dropped downward using the slope of the receiving board as a guide, and at the same time, the wood is re-cut and transferred onto one receiving board. The wood that needs to be cut is dropped downward using the slope of the receiver as a guide, and only the wood that needs to be re-cut is cut.
By reversing and transporting the lumber to the lumber loading side of the sawmill through a reversing device such as a return conveyor that is waiting at the falling point, the lumber that has been cut to a predetermined size and the lumber that requires re-cutting are This ensures efficient and automatic sorting and continuous cutting of wood.

``Problem to be Solved by the Invention'' However, in conventional automatic sorting devices, if the length, width, or thickness of the wood is large, the wood can easily fall from the slope of each receiver due to its own weight. Although this is not a major problem, especially when the length, width, and thickness of the wood are relatively small, even if the left and right receiving plate surfaces are mirror-finished, the wood may not be suitable for the customer due to its light weight. There were many cases where the board easily stuck to the surface of the board and did not fall smoothly. Especially 5
This failure to fall was more pronounced as the wood became smaller.

In addition, even if the wood is cut straight on the sawmill side, when it is transferred to the pair of left and right receiving plates, the tip side tends to bend toward either the left or right receiving plate. Furthermore, once the wood is bent, it has often become impossible to reliably sort the wood that has been cut to a predetermined size and the wood that requires re-cutting in a predetermined lateral direction.

Therefore, in any case, the conventional automatic sorting apparatus has a major structural problem in which the efficiency of one operation is significantly reduced due to the occurrence of each of the above-mentioned situations.

In addition, with conventional sorting devices, due to their structure, the wood cannot be sorted unless the wood cut by the sawmill is completely transferred from the sawmill to the pair of left and right receivers. Since a means for completely transferring the rear end of the wood located on the side of the sawmill onto the receiving board, for example, an attached device such as a conveyor or a feed roller, is required, which makes the device itself unnecessarily complicated. It also had the problem of becoming larger and larger, which naturally led to higher costs.

Therefore, the present invention was developed to effectively solve the problems of the conventional sorting apparatus.

"Means for Solving the Problem" In order to achieve the above object, the first invention provides a system in which the opposing inner ends are rotatably connected to place the wood in a flush state and to sort the wood. The present invention is equipped with a pair of left and right receivers that can be moved and transformed into a chevron shape, and is provided with a pair of left and right receivers that can be moved forward and backward relative to the sawmill, assuming an automatic sorting device installed on the lumber delivery side of a sawmill. A configuration was adopted in which the pair of left and right receivers are moved and deformed into the above-mentioned chevron shape while being advanced in a direction away from the sawmill.

In addition to the structure of the first invention, the second invention provides a position regulating means for the wood at appropriate positions of the pair of left and right receivers, and immediately before the pair of left and right receivers moves and deforms into a chevron shape, A configuration was adopted in which the wood is positioned on the corresponding receiving board using the position regulating means.

"Operation" Therefore, in the first and second inventions, when the wood cut by the sawmill is transferred onto the pair of left and right receivers, the pair of left and right receivers moves in the direction away from the sawmill, i.e. Moving in the forward direction, the pair of left and right receivers moves and deforms into a chevron shape, so that the wood that has been cut to a predetermined size falls downward using the slope of the other receiver as a guide, and is recut. The wood that needs processing falls downward using the slope of one of the receivers as a guide.

Both types of wood will be reliably sorted.

However, the first and second inventions are characterized in that during the initial operation, the pair of left and right pelvises are moved in the forward direction by a predetermined distance while the wood is placed on the pair of left and right receiving plates. Therefore, by synchronized forward movement of the pair of left and right pelvises, it is possible to apply thrust to each piece of wood, and at the same time, it is possible to transmit vibration between each piece of wood and the pelvic surface. There is no need to worry about the wood easily sticking to the receiving surface and becoming difficult to fall.

Moreover, in the second invention in particular, just before the left and right pelvises are moved and deformed into a chevron shape, the position regulating means moves the wood transferred from the sawmill onto the corresponding receiving plate. 1 Even if the wood is not fed in a straight line, it is sometimes possible to sort the wood to ensure that the wood that has been cut to size and the wood that needs to be re-cut are always in the same lateral direction. It is possible to drop it to.

"Example" Hereinafter, the present invention will be described in detail based on an illustrative embodiment.

First, to briefly explain the sawmill A used together with the automatic sorting device B, the sawmill A uses a pair of caterpillar endless conveyors 1 as a means of transporting wood, as shown in Fig. 1. Band saw sawmill (for details, see Jikoko 53-2
No. 8874), the wood is simply placed on each of the caterpillar endless conveyors 1 and transported to the band saw 2 disposed between both endless conveyors 1. With the guiding action of the feed roller 4, the wood is cut into pieces that have been cut into predetermined dimensions and pieces that require re-cutting, and are transferred onto the receiver of an automatic sorting device B, which will be described later. Only the wood that needs to be re-cut after being sorted by automatic sorting device B is transferred to return conveyor C, which is installed side by side.

The lumber is then reversely transferred to the lumber import side of the lumber machine A again.

As shown in FIG. 2, the automatic sorting device FB installed on the wood delivery side of the sawmill A is rotatably connected to the connecting shaft 13 via the collar 13a at its opposing inner end. It is equipped with a pair of left and right pelvises 12A and 12B, and specifically, a plurality of slide brackets 16 can be moved on a guide shaft 15 supported on the upper part of its own base frame 11 via a bearing 14. The outer end side of one of the pelvises 12A is fixed to the base portion 16a of each slide bracket 6, and the support shaft 17 supported on the lower part of the base frame 11 via the bearing 14 , a plurality of swinging arms] 8 are swingably attached at their lower ends, and a plurality of slide brackets 16 are movably fitted onto guide shafts 19 supported at the upper ends of each swinging arm 18, The outer end side of the other pelvis 12B is fixed to the pace part 16a of each slide bracket 16, and the pair of left and right pelvises 12A and 12B are moved by the guiding action of the guide shaft 19 and the guide shaft 15 into a sawmill. A
The structure is such that it can move forward and backward relative to the wood delivery side.

In addition, this automatic sorting device B has one receiver 11 as shown in FIG.
A push-up roller 21 that is moved up and down by a cylinder 20 is provided below 2A, and by raising the push-up roller 21 by the opening movement of the cylinder 20, the inner end side of one pelvis 12A is moved around the guide shaft 15 as a fulcrum. When it is lifted upward, at the same time, the swinging motion of each swinging arm 8 is obtained, and the inner end side of the other pelvis 12B connected to the connecting shaft 13 is also lifted upward using the guide shaft 19 as a fulcrum, and the left and right The pair of pelvises 12A and 12B can be automatically moved and transformed into a chevron-shaped state for sorting wood, and conversely, by lowering the push-up roller 21 by opening the cylinder 20, this chevron-shaped state can be automatically released. A pair of left and right pelvises 12A and 12B,
It is configured so that it can be moved and transformed into a flush state on which wood is placed.

Furthermore, as shown in Figure 1, this automatic sorting device B has an actuation plate 22 that is interlocked with a desired slide bracket 16 for fixing the - side pelvis 12A fitted onto the guide shaft 15, and the actuation plate 2
2 is connected to the rod 23a of a cylinder 23 separately provided on the base frame 11, and when the cylinder 23 opens, the actuating plate 22 is moved together with the slide bracket 6 into the guide shaft 1.
By moving the top of 5, the pair of left and right pelvises 12A.
12B is configured to be able to move forward and backward automatically with respect to the sawmill A.

In the embodiment, a configuration is adopted in which the actuating plate 22 is held between two slide brackets 16 and the actuating plate 22 is interlocked with the slide brackets 16, but the present invention is not limited to this. Instead, it is also possible to link both 16 and 22 using other known methods and means.

Further, as shown in FIG. 3, this automatic sorting device B has a pair of left and right L-shaped plates rotatably attached to the ends of the connecting shafts 13 on the tip end sides of the pair of left and right receiving plates 12A-12B. Position regulating arms 24A and 24B are provided, and the lower parts of the position regulating arms 24A and 24B are individually connected to the rod 25a of the cylinder 25, and the cylinders 25 are driven synchronously.
The left and right pair of position regulating arms 24A and 24B are connected to the connecting shaft 13.
A regulating position (Fig. 3A) that rotates upward from the corresponding pelvis 12A-12B surface using the fulcrum, and the receiving plates 12A and 12B.
A configuration is adopted in which the device is moved from the surface to the standby position (FIG. 3B) by rotating downward.

Incidentally, even in this embodiment, each of the above-mentioned cylinders 20 and 2
It goes without saying that each drive such as 3, 25, etc. is automatically performed by electrical control.

Therefore, when the automatic sorting device B having such a configuration sorts the wood 26 into predetermined size wood 26 and the wood 27 that requires re-cutting, the wood is first cut with the sawmill A. Driven by the endless caterpillar conveyor 1, the wood 26 that has been cut to a predetermined size and the wood 27 that requires re-cutting are
As shown in Fig. 4A, a pair of left and right receiving plates 1 are flush with each other.
2A and 12B respectively.

Then, as shown in FIG. 5, the actuation plate 2 connected to the rod 23a of the cylinder 23 is driven by the cylinder 23.
2 moves on the guide shaft 15 together with the slide bracket 16 to move the pair of left and right receiving plates 12A-12B to the sawmill A.
At the same time, while moving away from the
As shown in FIG. 3A, when each cylinder 25 is driven, the pair of left and right position regulating arms 24A and 24B are synchronously rotated upward, and the lumber 26 that has been cut to a predetermined size and that requires re-cutting are synchronously rotated upward. After lifting the timbers 27 toward the center and positioning each timber 26 and 27 securely on the corresponding receiving plates 12A and 12B, the respective position regulating arms 24A and 24B are moved again to the position shown in FIG. 3B. When the roller 21 rotates to the lower standby position shown in FIG. Since it is lifted upward as a fulcrum, the inner end side of the other receiving plate 12B also obtains a oscillating movement of each swing arm 18, and is lifted upward using the guide shaft 19 as a fulcrum. The receiving plates 12A and 12B are moved and deformed into a chevron shape.

As a result, the wood 26 cut to a predetermined size automatically falls to the lower left using the slope of the other receiving plate 12B as a guide, and the wood 27 that needs to be re-cut is placed on the inclined surface of the other receiving plate 12A. The wood automatically falls to the lower right using the surface as a guide, and is automatically reversed and transferred to the lumber loading side of the sawmill A by the previously mentioned return conveyor C.

Incidentally, after one sorting operation is completed, the machine automatically returns to the above-mentioned initial standby state and sequentially sorts the timbers 26 and 27 cut by the first sawmill in the same process. It happens.

However, in the initial operation, this automatic sorting device B
6 and 27 are placed on the corresponding receiving plates 12A and 12B, the pair of left and right receiving plates 12A and 12B are moved in the forward direction by a predetermined distance. By moving the boards 12A and 12B forward, each wood 2
At the same time, thrust can be applied to each of the timbers 26 and 27.
27 and the surfaces of the receiving plates 12A and 12B, this allows the wood to be moved between the receiving plates 1 and 12B, unlike the conventional method.
It easily sticks to surfaces 2A and 12B, and there is no need to worry about it becoming difficult to fall.

Therefore, it goes without saying that when the length, width, and thickness of the wood are large, but even when the length, width, and thickness of the wood are relatively small, each wood 26 27 can be dropped smoothly, so there is no need to interrupt the sawing operation.

Moreover, in this automatic sorting device B, just before moving and deforming the left and right pair of pelvises 12A and 12B into a chevron-shaped state, by the lifting action of the pair of position regulating arms 24A and 24B,
Since the timbers 26 and 27 transferred from sawmill A can be reliably positioned on the corresponding pelvises 12A and 12B, even if the timbers 26 and 27 are bent and not fed straight, they can be sorted for the final sorting. sometimes wood 26/27,
It becomes possible to reliably drop it in a predetermined lateral direction.

Therefore, in any case, the wood is 2A and 12B on each receiving board.
If the wood easily sticks to a surface and does not fall smoothly, or if the wood is bent in the direction of either the left or right pelvis 12A or 12B, the wood 26 that has been cut to a predetermined size and the wood 27 that needs to be recut. There is no need to worry about not being able to sort things reliably.

In this embodiment, as shown in the figure, position regulating arms 24A and 2 are provided at the distal ends of the left and right pelvises 12A and 12B.
4B is provided, but if the wood is short length,
Depending on the implementation, it is also possible to provide one or more position regulating arms in each pelvis 12A and 12B, or to arrange a position regulating arm between these arms and a position regulating arm 24A and 24B on the distal end side in parallel. .

Also, the left and right pair of pelvises 12A and 12B are made of wood 26 and 27.
Moving the wood in the forward direction with the wood 26
・Since it is possible to sort the wood without placing the wood 27 completely on the corresponding pelvis 12A, 12B, in this sorting device, the rear end side of the wood is completely placed on the corresponding pelvis 12A, 12B.
As a result, additional means such as a conveyor and a feed roller placed on B are completely unnecessary, and as a result, the structure can be simplified and costs can be reduced.

"Effects of the Invention" As described above, by employing the above configuration, the automatic sorting device of the present invention applies thrust to the wood placed on the customer receiving board by forward movement of the pair of left and right pelvises, and at the same time, Since it is possible to transmit vibration between each piece of wood and the pelvic surface, there is no need to worry about the wood easily sticking to the receiving surface and becoming difficult to fall, as was the case in the past. Since there is no need for additional means such as a conveyor or feed roller to completely place the device on the receiving plate, the structure of the device itself is simplified, and this greatly contributes to cost reduction.

Also, especially in the device according to the second invention.

Immediately before the pair of left and right pelvises are moved and deformed into a chevron shape, the lifting action of the 5-position regulating means allows the wood transferred from the sawmill to be reliably positioned on the corresponding receiving plate, so even if the wood is straight From this point of view, the final sorting can sometimes be done by ensuring that the wood that has been cut to a certain size and the wood that needs to be re-cut fall in a certain lateral direction, even if the wood is not sent to the We can also expect a significant improvement in workability.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view showing a sawmill equipped with an automatic sorting device according to an embodiment of the present invention, Fig. 2 is a partially exploded perspective view showing only the automatic sorting device, and Figs. 3 A-B are FIG. 4A is a side view of the main part showing the operation of the position regulating arm; FIG. 4A is a side view showing the pair of left and right pelvises in a flush state; FIG. FIG. 3 is a plan view showing a state in which a pair of left and right pelvises have moved forward by a predetermined distance. A... Sawmill, B... Automatic sorting device, C... Return conveyor, 11... Base frame, 12A-12B...
- Pelvis, 13... Connection shaft, 15, 19... Guide shaft, 16... Slide bracket, 18... Swing arm, 20, 23, 25... Cylinder, 21... Push-up roller , 24A/24B... Position regulating arm (position regulating means), 26... Wood cut to predetermined dimensions, 27
...Wood that requires re-cutting.

Claims (2)

[Claims] (1) Equipped with a pair of left and right receivers whose opposing inner ends are rotatably connected and can be moved and transformed into a flush state for placing wood and a chevron-shaped state for sorting wood, and are installed on the wood delivery side of the sawmill. The automatic sorting device is installed such that the pair of left and right receivers are movable forward and backward relative to the sawmill, and the pair of left and right receivers are moved in a direction away from the sawmill while moving to the chevron-shaped state. An automatic sorting device for wood, characterized in that it is configured to be deformed. (2) Equipped with a pair of left and right receivers whose opposing inner ends are rotatably connected and can be moved and transformed into a flush state for placing wood and a chevron-shaped state for sorting wood, and are installed on the wood delivery side of the sawmill. The automatic sorting device is installed such that the pair of left and right receivers are movable forward and backward relative to the sawmill, and the pair of left and right receivers are moved in a direction away from the sawmill while moving into the chevron-shaped state. In addition, a position regulating means for the wood is provided at appropriate positions on the pair of left and right receiving plates, and the position regulating means moves the wood onto the corresponding receiving plate immediately before the pair of left and right receiving plates move and deform into a chevron shape. An automatic wood sorting device characterized in that it is configured to be located at.