JPS6324801B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Field of Application> This invention dramatically improves peeling ability, reduces noise and vibration as much as possible, simplifies installation, and uses a cylindrical body. This invention relates to a wood peeling barker that is easier to manufacture, maintain and inspect than conventional ones. In particular, it eliminates the need for machining the side plate into a special shape, simplifying manufacturing.

<Conventional technology and its problems> The barker conventionally used for stripping wood is
The most common type was a rotating drum type, as shown in Japanese Patent No. 47-21881. That is,
The wood with the skin attached is placed into a rotating cylindrical drum, and as the drum rotates, the wood is lifted upward along the inner circumferential surface of the drum, and when it falls, the wood collides with other wood. In addition, the peeling action is performed by rubbing together. In other words, the pieces of wood thrown into the drum repeatedly collide and rub against each other as they dance around inside the rotating drum, and the skin is peeled off.

Therefore, in the case of such a conventional drum-shaped barker, the wood to be fed must be cut into short pieces to facilitate the dancing. For example, the length of the wood must be At most 1
Not only does it have to be about ~1.5m, but
Because the wood repeatedly danced wildly inside the drum, the noise and vibrations generated during the work were intense. Nowadays, noise regulations have become stricter for things that make such loud noises.
The places where it can be used are also very limited. In addition, as strong vibrations are generated as mentioned above, a solid foundation must be constructed in order to install this equipment, which not only increases the cost of building the foundation but also makes it difficult to easily move the equipment. It also had some disadvantages, such as being unable to do so.

Furthermore, as shown in Japanese Patent Application Laid-open No. 55-51509, a cylindrical drum is used, but there is also a type in which skinning is performed with a peeling hammer without rotating the cylindrical drum; Manufacturing is cumbersome as it is necessary to drill an entry path for the debarking hammer, and since the cylindrical drum does not rotate, the wood may get caught in the cylindrical drum due to obstruction of the debarking hammer or the entry hole. There is a drawback that the wood removal work in that case is troublesome. In other words, in the case of a wood peeling barker that does not rotate a cylindrical drum, the wood peeling tank does not need to be of a cylindrical type; it may be of a type that is easy to manufacture, and it is easy to remove stuck wood. In order to do this, it is preferable that the top of the wood peeling tank is open. Also,
In the case of such a type in which the skin is stripped by the impact of the skinning hammer, the impact force of the hammer is large, but the hammer portion is rotatable in order to increase the impact force. This method works well for stripping thin wood, but when the wood is thick, the force to move the wood is weak, so the position of the wood does not change and the hammer hits only the same spot on the same piece of wood. Since this process is repeated repeatedly, it damages not only the epidermis but also the tree itself. Therefore, a rotating hammer like this is not suitable for debarking thick wood, and the wood is dragged by the debarking blade and is pulled by the debarking blade as it moves, thereby debarking the wood. It is necessary to use a peeling blade in which the collision position between the wood and the peeling blade changes sequentially. In conventional products of this type, peeling is performed by impact force, so the rotational speed of the hammer is high, with a circumferential speed of about 17 km/h to 45 km/h at the cutting edge. However, the wood was dragged by the stripping blade,
When debarking is carried out in a scratching manner, if the rotation speed is set to such a high speed, the debarking blade will cut into the wood too strongly and act like a circular saw blade, causing the wood to drag. Otherwise, the wood will end up being cut by repeated collisions in the same place. Therefore, in order to make the stripping blade drag the wood while stripping, it is necessary to slow down the rotational speed of the stripping blade, and the circumferential speed of the cutting edge is 4 km/h.
It is necessary to set the speed to 10km/h. In other words, the conventional method of debarking using impact force is effective for thin wood, but is not suitable for thick wood.
It is desirable to use a method that strips the outer skin of wood, and for that purpose, it is necessary to slow down the rotational speed of the peeling blade as described above.

In addition, as shown in Japanese Patent Application Laid-Open No. 57-185106, there is a device in which a large number of slits are bored in a cylindrical body so that the peeling plate passes through the slits one after another.
This also uses a cylindrical drum like JP-A-55-51509, so manufacturing is troublesome as many slits must be drilled in the cylindrical drum to penetrate the peeling plate. Since it does not rotate, the wood may get caught in the cylindrical drum because it is obstructed by the peeling board or the slit, and in this case, the wood removal process is troublesome. Since it is based on a cylindrical body, it is necessary to drill a large number of slits one by one.

Therefore, the present inventors have previously developed a method of attaching a wall to a side plate of a wood peeling tank having a V-shaped cross section as shown in Japanese Patent Application Laid-open No. 58-16804. Along with drilling a long hole,
By disposing a rotary blade that retracts from the outside of the wood peeling tank into the inside through the elongated hole and rotating the rotary blade, the rotary blade moves the wood as if dragging it and causes it to be hit by the rotary blade. Invented a wood peeling barker that performs the barking action.
Although this method had some effect, since the wood peeling tank had a bottom with a V-shaped cross section to support the wood, it was necessary to drill a long hole for the rotary blade to enter and exit. Since the rotary blades were made to emerge and retract from this long hole, it was not possible to increase the number of rotary blades. Since it was not possible to increase the number of rotating blades, it was necessary to increase the length of the wood peeling tank in order to achieve complete peeling.

In other words, in order to increase the peeling ability and simplify manufacturing, it is necessary to eliminate the need for special processing such as drilling long holes in the side plate, and to create a structure in which a large number of peeling blades come into contact with the wood. .

<Means for solving the problem> Therefore, the wood peeling barker according to the present invention has the following features:
The bottoms of the left and right side boards, each of which has a straight lower end, are connected by a plurality of connecting plates curved upward in a substantially semicircular shape at intervals shorter than half the length of the wood to be input. A cylindrical rotating body with a radius slightly smaller than the radius of the connecting plate is disposed below the connecting plate in the longitudinal direction to constitute a wood peeling tank, and the upper part of the wood peeling tank is left open, and the connecting plate A peeling blade that is taller and has a blade that protrudes into the wood peeling tank is installed, and the peeling blade of the rotating body drags the wood as it moves, and during this movement, the peeling blade of the rotating body removes the outer skin of the wood. The skin is removed by peeling it off. That is, the upper part of the wood peeling tank is open to facilitate the removal of wood from the wood peeling tank, and the bottom of the wood peeling tank is made upwardly convex with a connecting plate and a rotating body, so that the wood stays in one place at the bottom. Even if the side plate is straight and there is a gap between the side plate and the rotary peeling blade, the wood is always supported in a stable state by the connecting plate. This makes it possible to simplify manufacturing by eliminating the need for special processing of the side plates.

<Example> Next, an example of the wood peeling barker according to the present invention will be described based on the drawings. Reference numeral 1 indicates a left side plate, and 2 indicates a right side plate. The lower ends of both side plates 1 and 2 are linear and are not processed into any special shape. In other words, a rectangular steel plate can be used as is, which simplifies manufacturing.

Reference numeral 3 designates a plurality of connecting plates connecting the lower sides of both side plates 1 and 2, which are curved in a substantially semicircular shape. The connecting plate 3 connects the side plates 1 and 2 at an interval shorter than half the length of the wood to be input. This is to ensure that the inserted wood is always supported by two or more connecting plates. It should be noted that if too many connecting plates 3 are provided, manufacturing becomes troublesome, and the number of peeling blades 6 of the cylindrical rotating body 5, which will be described later, decreases, so there is no need to provide more than necessary. At least, the purpose of the connecting plate is achieved as long as the wood does not fall through the gap between the side plates 1, 2 and the rotary body 5 or the peeling blade 6, and the wood does not get stuck in this gap. Since the lower ends of the side plates 1 and 2 are straight, it is necessary to provide a gap between the rotating body 5 and the peeling blade 6 through which the peeling blade 6 can pass. This is because it is absolutely necessary to provide a gap between the two. If the wood is supported by the connecting plate 3 only in the part where there is a gap between the lower ends of the side plates 1 and 2 and the rotating body 5, the central part will always be supported by the cylindrical rotating body 5. There is no need to support the wood with the connecting plate 3 in the central part of the wood peeling tank where the wood is in contact with the rotating body 5. That is, the number of connecting plates 3 can be reduced as much as possible in order to simplify manufacturing.

Reference numeral 5 denotes the long cylindrical rotating body described above, which is disposed in the downward longitudinal direction of the connecting plate 3. The rotating body 5 has a radius slightly smaller than the radius of the connecting plate 3.
The connecting plate 3 is placed in a concentric position and close to the connecting plate 3 without contacting the connecting plate 3. The rotating body 5 is adapted to be rotated by an arbitrary driving means (not shown). The left side plate 1, the right side plate 2, the connecting plate and the rotating body 5 constitute a wood peeling tank, and the upper part of the wood peeling tank is left open. This has the great effect of making maintenance and inspection during operation easier and manufacturing easier.

A large number of peeling blades 6 are disposed on the rotating body 5, and the peeling blades may have a desired shape such as a stepped blade, a saw blade, or a chip blade. The height of the peeling blade 6 must be higher than that of the connecting plate 3, so that the blade protrudes into the wood peeling tank. This is because the peeling blade 6 peels the wood. In the illustrated example, the peeling blade 6 is a stepped blade and is disposed diagonally with respect to the rotating body 5. By arranging the peeling blade 6 obliquely in this manner, the effect of moving the wood is enhanced.

Furthermore, a peeling blade 4 may be provided on the connecting plate 3 as well. As mentioned above, when the interval between the connecting plates 3 is narrowed, the wood is supported by a large number of connecting plates 3, so it becomes more stable, and the wood is less likely to get stuck in the gap between the side plates 1, 2 and the rotating body 3. The movement of the blade becomes smoother, but at the expense of the peeling blade 6 of the rotating body.
This will serve to compensate for the decrease in the number of On the other hand, the peeling blade 4 of the connecting plate 3 is in a fixed state, and the peeling blade 6 of the rotating body 5 moves, so if the wood rotates in the same way as the rotation of the peeling blade 6 of the rotating body 5, The peeling blade 4 of the plate 3 particularly exhibits peeling ability. In this way, either the peeling blade 4 or the peeling blade 6 will always perform the peeling action on the wood, and the time required for peeling can be greatly reduced. In order to avoid interfering with the movement of the wood, the peeling blade 4 of the connecting plate 3 needs to be at the same height as the peeling blade 6 of the rotating body 5, or at a height that does not protrude. This is because if the peeling blade 4 of the connecting plate 3 is high, the peeling blade 6 of the rotating body 5 will not come into contact with the wood.

Reference numeral 7 denotes a wood inputting section in which a part of the left side plate 1 is raised, and 8 indicates a wood discharging section. 9 is a belt conveyor for conveying skins.

<Operation> The rotating body 5 is then rotated in the direction of the arrow, and wood is fed from the wood feeding section 7. Then,
The wood moves from the right side board 2 to the left side board 1 while being supported by the connecting plate 3 and the rotating body 5 and being dragged by the most protruding peeling blade 6. At this time, since the peeling blade 6 is a stepped blade, the outer skin of the wood is subjected to a peeling action by the peeling blade 6 as if the outer skin is removed. At the same time, since the wood is dragged along the connecting plate 3 as it moves, the skin of the wood is grabbed by the peeling blade 4 provided on the connecting plate 3 and subjected to the peeling action. Then, the wood is chased by the following wood and sequentially moves toward the wood discharge section 8.

Here, since the connecting plates 3 are arranged at intervals shorter than half the length of the wood to be thrown in, the wood is always supported by two or more connecting plates 3, so both side plates 3 , 2 and the rotating body, and the ends of the wood do not get stuck in the gap, and the wood moves smoothly in the wood peeling tank.

In addition, since the bottom of the wood peeling tank is formed into an upwardly convex shape by the connecting plate 3 and the rotating body 5, the wood is efficiently swung by the rotating body 5 and peeled without staying in one place at the bottom.

Here, if the peeling blade 6 is disposed diagonally on the rotary body 5, the wood will be removed from the wood discharging section 8 by the rotation of the rotary body 5.
This will encourage movement in this direction. The peeled skin then falls through the gap between the rotating body 5 and the side plates 1 and 2, and is collected by the belt conveyor 9.
The wood that has been completely peeled is then discharged to the outside from the wood discharge section 8.

<Effects of the Invention> As described above, according to the wood peeling barker of the present invention, the left and right side plates each having a straight lower end are connected by connecting plates at an interval shorter than half the length of the wood to be input. As a result, the wood is always supported in a stable state, so there is no need to create a long hole in the lower end of the side plate through which the peeling blade passes, thereby narrowing the gap between the side plate and the rotating body. Therefore, manufacturing is easy. Then, we installed a peeling blade on a cylindrical rotating body, and instead of using impact force to peel the wood as in the past, we created a system in which the peeling blade drags the wood to precisely peel off the outer skin of the wood. The barker can be completely stripped regardless of the thickness of the wood, and multiple stripping blades can perform the stripping action, making it possible to shorten the overall length of the barker.Moreover, the top of the wood stripping tank is open. Maintenance and inspection during operation is easy, and manufacturing is also simple. In addition, if a peeling blade is also provided on the connecting plate, either the peeling blade on the rotating body or the peeling blade on the connecting plate will perform the peeling action reliably, so that the skin can be removed in a very short time. This has the effect of

[Brief explanation of drawings]

The drawings show an embodiment of the wood peeling barker according to the present invention, and FIG. 1 is a front view, FIG. 2 is a plan view, and FIG. 3 is a sectional view taken along the line A--A. 1...Left side plate, 2...Right side plate, 3...Connection plate,
4...Debarking blade, 5...Rotating body, 6...Debarking blade, 7
...Wood input section, 8...Wood discharge section, 9...Belt conveyor.

Claims (1)

[Scope of Claims] 1. The bottoms of the left and right side boards, each of which has a straight lower end, are connected by a plurality of connecting boards that are curved upward in a substantially semicircular shape, at intervals shorter than half the length of the wood being fed. A cylindrical rotating body with a radius slightly smaller than the radius of the connecting plate is disposed below the connecting plate in the longitudinal direction to form a wood peeling tank, and the upper part of the wood peeling tank is left open. The wood peeling barker is also characterized in that the rotating body is provided with a peeling blade which is higher than the connecting plate and whose blade portion protrudes into the wood peeling tank. 2. The wood peeling barker according to claim 1, wherein the connecting plate is provided with a peeling blade having a height that is equal to or does not protrude from the peeling blade of the rotating body.