JPH0436048B2 - - Google Patents

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to a peeling machine for peeling the bark of logs.

(b) Prior Art Conventionally, a rotating shaft is installed in the lower part of a wood storage body horizontally suspended on a machine frame in parallel with the wood storage body, and a number of striking bodies are pivotally connected to the rotating shaft, and the striking bodies are used to strike the wood. A peeling machine is already known in which the peeling machine passes through a slit formed in the lower surface of the container.

(c) Problems to be solved by the invention Since the striking body strongly strikes the circumferential surface of the wood,
In addition to damaging the wooden part, the driving part of the striking body may be damaged by the impact. Also, when the striking body strikes the wood, the striking body returns due to the reaction force, which prevents the rolling and circulation of the wood. Unfortunately, particularly heavy wood could not be moved, and only some parts were severely damaged while bark remained in other parts.

(d) Means for solving the problems In order to solve the above-mentioned drawbacks, a part of the drum having a large number of skinning teeth on the outer circumferential surface is exposed to the lower opening of the wood storage body, and the drum is rotated. , Sina,
The bark of willow, zelkova, Ezo pine, cedar, cypress, etc., which has long fibers or strong fibers, will not be discharged from the wood container even if it is peeled from the log, and will roll with the log for a long time, reducing the peeling performance. The present invention is characterized in that a large number of peeling teeth are attached to the outer circumferential surface of the drum, and a peeling blade lower than the peeling teeth is attached, and the peeling teeth cut the peeled long bark without damaging the wood, thereby creating a wood storage body. It is characterized in that it is discharged to the outside through a notch provided in the opening.

(E) Effect When logs are put into the wood storage body while rotating the drum, the barking teeth on the outer periphery of the drum roll the logs and sequentially peel off the bark, and the peeled bark engages with the peeling blade. The bark is pulled out or cut through the notch provided in the opening of the wood storage body, and the cut and shortened bark is discharged together with the bark cutting blade or scraped out by the bark cutting teeth.

(F) Example An example of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a wood storage body (hereinafter referred to as a storage body) which is horizontally suspended on the machine base 2 so that the delivery side is lowered, and two of these are connected in series, and an opening 3 extending approximately the entire length is provided at the bottom of the wood storage body (hereinafter referred to as the storage body). A hopper 4 projecting to the side is attached to the input port provided at the upper part of the starting end of the storage body 1 on the upper side, and the storage body 1 is expanded into a V-shape at the top. It may be constructed of left and right side plates and front and rear end plates, and in this case as well, the hopper 4 is provided at the upper part of the starting end side.

Further, the opening 3 of the storage body 1 is displaced laterally (to the side opposite to the hopper 4) from the vertical center line of the storage body 1 when viewed from the length direction, and is supported by a shaft 18 at the bottom thereof. drum shape (standard radius 730
The upper part of the rotating body 5 (mm) is inserted into the opening 3, and the outer peripheral surface of the rotating body 5 has a large number of peeling teeth 6... (a is Its rotation locus) is spiral-shaped and is removably attached by welding or bolts.
The standard pitch of the tooth row is 2400 mm, which is approximately equal to or slightly longer than the length of the wood.

When the height of the skinning tooth 6 is approximately 100 to 120 mm, a low skinning blade 7 with a height of approximately 15 to 20 mm is installed on the same circumference as the adjacent skinning tooth 6. The rotation direction side of this skin cutting blade 7 is formed at a blade angle of 90 degrees or less when viewed from the axial direction of the rotor 5 with respect to the outer peripheral surface of the rotor 5, and the rotation direction side of the cutting blade 7 is The side edge part may be a surface perpendicular to the plate surface of the skin cutting blade 7 as shown in Fig. 7b, or the side edge may be made into a surface perpendicular to the plate surface of the skin cutting blade 7 as shown in Fig. 7 c. In one case, the edges on both sides are polished to form a cutting edge, and in the other, the outer circumferential surface of the ascending slope of the peeling tooth 6 is polished in a chevron shape from both sides as shown in FIG. In the example shown in FIG. 7, the blade angle θ with respect to the circumferential surface of the rotating body on the rotation direction side is 90°.
degree or less, and when the blade angle θ is an acute angle, it is preferably 50 to 75 degrees, and a plurality of the skinning blades 7 may be provided at intervals wider than the skinning teeth.
When a plurality of pairs are arranged at positions that correspond to a pair of adjacent skinning teeth 6, 6 across several skinning teeth 6 and substantially coincide with each other when viewed from the axial direction of the rotating body 5, a pair of skinning teeth 6 can be formed. Notches 8, 8 where the blades 7, 7 are adjacent to each other in the long bark
(described later), it is possible to cut at the same time while hooked on the tree, making it possible to reliably cut even the toughest fibers of bark.

Further, if all or some of the peeling teeth 6 are tilted so that the rear side (high side) is deviated toward the movement direction of the wood, as shown in FIG. 3, movement of the wood can be promoted. When the bark is difficult to peel off due to the type of wood or the time of felling, or when the amount of young wood is small, the shutter 10 installed at the outlet 1c of the rear storage body 1 is moved by the motor 11 to the chain 1.
2 to prevent discharge.

Furthermore, the lower part of one side of the opening 3 of the storage body 1 (the side where the skinning teeth 6 and the skin cutting blades 7 enter the storage body 1 while rising) is connected to the axis from the part facing the top of the rotating body 5. The lower part on the other side curves downward with a gentle slope to a part slightly away from the vertical diameter of the rotating body 5, and the lower part on one side and the lower part on the other side Since the lower edge is provided with a large number of notches 8 through which the skinning teeth 6 and the skinning blades 7 pass, each of the skinning teeth 6 and the skinning blades 7 are formed in the steeply sloped portions. It enters into the storage body 1 through the cutout 8 on the lower side, and escapes through the cutout 8 on the other side.

In the above-mentioned peeling machine, when logs are fed from the hopper 4 into the storage body 1 using a feeding conveyor or a lift, the peeling teeth 6 are inserted into the storage body 1 from the notch 8 at the lower part of one side of the storage body 1 which is steeply sloped. The rotary body 5 supports the wood and rotates while pushing the wood toward the other side and debarking the wood.
When the peeling teeth 6 reach the lower part of the other side, they escape from the notch 8 on that side, and the wood is pushed by the following wood and scooped up at the lower part of the other side, and is jumped up by the peeling teeth 6. The peeling process is performed by rolling toward the lower side and repeating such circulation.

Then, the peeled small bark is removed from the notch 8.
... are discharged to the outside by their own weight or by the scraping action of the skinning teeth 6. However, if the fibers are long or strong, they will not remain in the storage body 1 for a long time, but the skinning blades 7 When ... hooks the long bark and passes through the notch 8, both sides of the notch catch the bark and cut it in that state, and the bark cutting blade 7 tilts upward at the center of the board thickness. The bark is cut by pushing and pulling the log while pushing it up, and the cut bark is either caught by the bark cutting blades 7 and discharged in a folded state, or scraped out from the notches 8.

Therefore, a large amount of bark does not remain in the storage body 1, and the peeling teeth 6 efficiently peel the bark.

Further, the bark that has fallen from the notch 8 and between the rotating body 5 and the storage body 1 is carried out by a conveyor 9 stretched downward.

Next, when the logs are fed into the hopper 4, they are fed parallel to the length direction of the wood storage body 1, but some logs are fed perpendicular to the length direction of the wood storage body 1 as shown in FIG. 9b; There are some items that are thrown in in an oblique position, and countermeasures for such cases will be explained.

As the peeling process continues, the log becomes crosslinked as shown in FIG. 9a due to the circulation effect caused by the rotation of the peeling teeth 6, and the next log that is introduced no longer comes into contact with the peeling teeth. If you stop the process, the logs that have become cross-linked may lose their balance and fall sideways.Of course, stopping the work will reduce efficiency, but in order to discover this phenomenon,
It is extremely troublesome because the input status must be constantly monitored.

In order to prevent such a bridging phenomenon, the angle member 13 is placed on the swash plate 4a of the hopper 4 in an inverted V-shaped position and is tilted so that the delivery side is lowered as shown in FIG. Or, if the log is bent into an F-shape as shown by the dotted line and fixed, the end of the raw wood input perpendicularly or obliquely to the rotating body 5 will hit the angle material 13, and the log will be bent in the longitudinal direction of the rotating body 5. It slides along the slope and falls onto its side.

The angle material 13 is replaced with a roller 15 having a spiral protrusion 14 on its circumferential surface as shown by the chain line in FIGS. If the logs are transported by the strips 14, the phenomenon of the logs falling sideways can be prevented even more efficiently.

However, the rotating direction of the roller 15 is the direction in which the spiral protrusion 14 scrapes up the raw wood, and the spiral protrusion 1
The lead direction 4 is a direction in which the end of the raw wood is guided toward the lower side of the roller 15.

In the drawing, 16 is a material discharge conveyor, 17 is a return conveyor, and 19 is a log input chain conveyor.

(g) Effect of the invention Since the present invention is configured as described above, the peeled tooth 6
The tough and long bark that has been peeled off from the log by... will be cut by the bark cutting blade 7 attached to the circumferential surface of the bark stripping rotor, and the cut bark will be cut between the bark stripping rotor and the opening of the wood storage body. As a result, a large amount of bark is not retained in the wood container, and the peeling efficiency can be significantly improved.

The peeling performance can be significantly improved by the extremely simple operation of replacing the peeling teeth 6 when they become worn.

[Brief explanation of drawings]

The drawings show one embodiment of the invention,
Figure 1 is a plan view of the peeling machine, Figure 2 is a side view of the same as above,
Fig. 3 is a plan view showing the arrangement of the debarking teeth, Fig. 4 is a view taken along arrow A-A in Fig. 3, Fig. 5 is a cross-sectional view of the log input section, and Fig. 6 is a cross-sectional view of the subsequent part. , Fig. 7a is a front view of the skinning blade, b is a plan view of the same as above, c is a plan view of the same as above with a different blade type, Fig. 8a is a perspective view of another skinning blade, b is a plan view of same as above, c FIG. 9 is a cross-sectional view of FIG. DESCRIPTION OF SYMBOLS 1... Wood storage body, 3... Opening, 5... Rotating body, 4... Hopper, 6... Skinning tooth, 7... Skin cutting blade, 8... Notch.

Claims (1)

[Claims] 1. Open the lower part of the horizontally suspended wood storage body 1 over almost the entire length, allow a part of the drum-shaped rotating body 5 horizontally suspended below the opening to enter the wood storage body 1, and A large number of peeling teeth 6 and a peeling blade 7 whose cutting portion is on the rotational direction side are protrudingly provided on the outer peripheral surface of the body 5, and the peeling teeth 6 are provided at the opening of the wood storage body 1.
Or a peeling machine characterized by having a number of notches through which the peeling blade passes.