JPS6227369Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a wood debarking machine used for debarking construction wood and in a pre-process of manufacturing wood chips.

[Background technology and its problems]

When using wood for construction or for making chips, it is first necessary to remove the bark from the wood. Conventionally, a wood peeling machine used for this purpose has a large diameter rotating drum with a large number of peeling blades protruding from the inner peripheral wall, as disclosed in, for example, Japanese Utility Model Publication No. 34-14341. Many are used to remove the bark from wood by feeding it into the drum while rotating it.

However, in this conventional wood peeling machine, the rotating drum has a large diameter because it peels a large amount of wood at the same time. Therefore, there is a lot of noise and vibration, and there are pollution problems. Furthermore, there was a problem of high equipment costs and power costs.

Therefore, new devices have been developed in recent years. This has a number of comb-like slits formed in the lower wall of the fixed drum, and a rotating shaft with a number of protruding hammers corresponding to the spacing between the slits is placed below the fixed drum. The wood put into the fixed drum is peeled by a rotating peeling blade that enters the fixed drum through each slit at the bottom of the drum as the rotating shaft rotates.

It is true that this wood peeling machine has the advantage of reducing noise and vibration because the drum is fixed. However, since the peeling blade acts like a hammer and strongly strikes the surface of the wood, noise and vibration are not sufficiently reduced. Furthermore, the structure of the rotating shaft on which the peeling blade is provided is complicated, increasing manufacturing costs. Furthermore, the fixed drum requires a large number of long, thin slits in its bottom wall to receive each skinning blade, and thick plates must be used for strength, resulting in a significant increase in manufacturing costs. Moreover, as mentioned above, this method has the disadvantage that the peeling blade acts like a hammer and hits the surface of the wood strongly locally, causing unnecessary damage to the wood. Furthermore, since there is a tendency to only hit the surface of the wood locally, there is little movement of the wood (rotation or movement of each other), and sometimes there is no movement at all. For this reason, it takes a long time and is inefficient to strip all the wood evenly, and it also tends to result in uneven stripping. In any case, this method still has a drawback of low processing efficiency and high power costs. Further, since the bottom of the rotating drum is a V-shaped direct groove, the inside of the bent material is lifted up and is not easily affected by the peeling blade, and as a result, it tends to remain unpeeled. On the other hand, when wood is placed vertically into the drum, it is difficult to turn it horizontally, and there is also a risk that the wood may fly away.

[Purpose of invention]

This invention was made with attention to the above circumstances,
The purpose is to provide an excellent wood debarking machine that can perform a uniform debarking action efficiently, with less noise and vibration, and which can significantly reduce the required power.

[Summary of the idea]

In the present invention, a plurality of rotating bodies are installed in parallel at the lower end opening of the pot into which wood (raw wood) is input so that the upper outer peripheral surface covers the opening, and further,
The outer circumferential surface of each rotary body has a number of peeling blades that scrape up the wood in the hopper. By rotating the rotary body, the wood is rotated and smoothly circulated through the hopper, increasing efficiency. It is a kind of skin peeling.

[Example of idea]

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In the figure, 1 is a hopper, and as shown in FIG. 1, this hopper 1 is formed between a receiving side plate 2 and a sending side plate 3 which face each other. The lower end of the receiving side plate 2 is slightly curved inward, but the other parts are vertically erected. The lower half of the feeding side plate 3
It is inclined inward at about 40 to 45 degrees, and the lumber 5 is supplied along the slope part 4. The side plates 3 and 4 form a hopper 1 having a substantially V-shaped cross section with a narrow lower part. Furthermore, a lower end opening 6 is formed at the bottom of the hopper 1 and is formed between the lower ends of each of the side plates 3 and 4. By the way, as shown in FIG. 3, the hopper 1 is relatively elongated and has a total length of, for example, more than ten meters. Furthermore, one end in the longitudinal direction is slightly higher than the other end. For example, it is inclined by about 3 degrees. One high end is an input part 7, and the other low end is a take-out part 8, and the take-out part 8 is provided with a shutter 9 that can move up and down. Note that the hopper 1 configured in this manner is supported on a stand 11.

On the other hand, two rotating bodies 12 and 13 for peeling are provided in the lower end opening 6. That is,
The rotating bodies 12 and 13 are made up of long pipe shafts, and round bar-shaped shafts 14 are attached to both ends of the shafts, and these shafts 14 are connected to bearings 15 provided on the stand 11 side. It is pivoted. Pulleys 16, 16 are attached to the shafts 14, 14 on the input section 7 side, and a chain 17 is connected between the pulleys 16, 16.
are strung across, so that they rotate in the same direction and at the same speed. Furthermore, one shaft 1
Another pulley 18 is attached to 4, and this pulley 18 is connected to a pulley 21 on the motor 19 side via a chain 22.

Further, the rotating bodies 12 and 13 are inclined in accordance with the inclination of the hopper 1, and are arranged parallel to each other along the longitudinal direction of the lower end opening 6. That is, they are arranged parallel to the width direction of each side plate 2, 3. Further, the heights of the rotating bodies 12 and 13 are equal as shown in FIG. 1, and the upper outer peripheral surfaces thereof enter into the lower end opening 6 and are arranged so as to cover the lower end opening 6.

The outer peripheral surface of each of the rotating bodies 12 and 13 is shown in FIG.
As shown in FIGS. 3 and 4, a large number of peeling blades 23 made of stepped base members are spirally protruded at equal intervals of, for example, 30 degrees. Further, each of the peeling blades 23 is attached with its low step side facing toward the front of rotation of the rotating bodies 12 and 13. and,
Corresponding to the rotation locus of each of the skinning blades 23..., comb-tooth relief grooves 24 are cut out in the lower edge of each of the side plates 2, 3 to prevent the skinning blades 23 from hitting.

Note that 25 is a discharge conveyor provided below the rotating bodies 12 and 13, which receives the skin peeled from the log 5 and carries it out of the apparatus. Further, 26 is a shooter connected to the take-out section 8, and 27 is a take-out conveyor that sends out the wood 5 that has been taken out.

Next, the operation of the wood peeling machine having the above structure will be explained.

First, when the motor 19 is operated, the pulley 1
The rotational force is transmitted to each rotating body 12, 13 through a transmission system of 6, 18, 21 and chains 17, 22, and each rotating body 12, 13 moves in the same direction indicated by the arrow as shown in FIG. Rotate. That is, the upper outer peripheral surface rotates from the sending side plate 3 toward the receiving side plate 2. Further, the discharge conveyor 25 and the take-out conveyor 27 are also operated.

In this state, wood (logs) 5 are sequentially introduced into the hopper 1 from the input section 7. The wood 5, which has fallen due to its own weight, rides on the upper outer peripheral surface of each rotating body 12, 13 and moves toward the receiving side plate 2 while rotating. At this time, the surface of the rotating wood 5 is scraped up one after another by the skinning blades 23 on the rotating bodies 12, 13, so that the entire surface of the wood 5 is stripped. In this way, when the wood 5 reaches the receiving plate 2 while being rotated and peeled at the same time,
It is pushed up by the wood 5 coming from behind, and the bottom 1
Next, it moves over the rows of timbers 5 toward the feed side plate 3. In other words, it circulates within the hopper 1 as shown in FIG. Furthermore, since the hopper 1 is inclined, the skin is further peeled while repeating its quasi-circular movement, and the skin is sequentially moved toward the take-out portion 8 side.

Moreover, since the peeling blades 23 are spirally protruded from the outer peripheries of the rotating bodies 12 and 13, they are smoothly transferred from the input section 7 of the hopper 1 to the take-out section 8 side by the action of the feed screw.

The wood 5 thus accumulated in the take-out portion 8 is further subjected to the peeling action while continuing to rotate. Then, observe this state from the upper opening of hopper 1,
When the peeling is completed, the shutter 9 is lowered by a shutter drive mechanism (not shown) to open the extraction section 8. As a result, the wood is delivered to the take-out conveyor 27 via the shooter 26.

In addition, the skin generated by the above peeling is removed from the rotating body 1.
2 and 13, they fall onto the discharge conveyor 25 below and are discharged from the apparatus.

In addition, in the case of curved wood 5, the curved concave side surface cannot be stripped with a conventional cylindrical drum, but
In the apparatus of the present invention, the wood 5 is placed over the rotating bodies 12 and 13 as shown in FIG. 5, and is easily stripped by the protruding stripping blades 23, thereby improving work efficiency.

In the above embodiment, the upper part of the hopper 1 is opened over its entire length, but a lid may be attached to the middle part excluding the input section 7 and the output section 8. Further, the take-out portion 8 does not receive the vertically movable shutter 9, but is formed in a part of the receiving side plate 2 so as to be openable and closable.
The stripped wood 5 may also be taken out from the side.

In addition, although the above embodiment shows a structure in which two rotating bodies are arranged side by side, three or more rotating bodies may be provided, and each rotating body may have a structure in which a plurality of rotating bodies are connected in a straight line via bearings, etc. In this case, the motors should be installed on both sides. Also,
The rotation directions of each rotating body may be different.

In addition, the shape of the peeling blade is not limited to the step-like shape.
The most suitable shape may be selected depending on the wood material, etc.

[Effect of idea]

As explained above, the present invention involves installing a plurality of rotating bodies in parallel to each other in the lower end opening of the hopper into which wood (logs) is fed, and the upper outer circumferential surface of the rotating bodies is installed so as to cover the lower end opening. Further, a large number of peeling blades for scraping up the wood in the hopper are protruded from the outer peripheral surface of the rotary body. Therefore, the wood put into the hopper is given a sufficiently strong rotational force by the upper outer circumferential surface of the rotating body and is rolled and moved, and at the same time is subjected to the peeling action by the peeling blade. Therefore, each piece of wood is stripped uniformly throughout, increasing the efficiency of stripping and significantly reducing power costs. In addition, since the wood reliably rolls and circulates smoothly within the hopper, it is possible to strip the bark continuously and efficiently without causing clogging or flying off the wood. In particular, by providing a plurality of rotating bodies, these effects can be further improved.

In addition, since multiple rotating bodies are provided and used side by side, even if each rotating body has a small diameter, the upper outer peripheral surface of the rotating body that moves the wood can be substantially widened, and a large number of peeling blades can be installed at that location. can be placed. In other words, since the upper outer circumferential surface is large, there is no need to prepare a rotating body with a large diameter. The device can be made more compact.

Furthermore, the present invention provides the following effects.

First, since it has a simple structure consisting of a combination of a hopper and a peeling rotary body, it is easy to manufacture and maintain and inspect, and the equipment cost can be reduced to about one-fourth of that of the conventional rotating drum type.

In addition, since the hopper is a fixed type, noise and vibration are extremely low compared to rotating drum types.
Even when the top is open, the fixed drum type is almost silent and quiet.

In addition, by opening part or all of the top of the hopper, the flow of logs is smoother than with conventional rotating or fixed cylindrical drums, and the peeling status can be easily checked from the outside, making control easier. Even if wood gets stuck in the middle, it can be easily removed and the work is easy.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of a wood peeling machine according to an embodiment of the present invention, Fig. 2 is a side view thereof, Fig. 3 is a plan view thereof, Fig. 4 is a side sectional view thereof, and Fig. 5 is a peeling machine. It is an explanatory view showing a stripped state. 1... Hopper, 2... Receiving side plate, 3... Feeding side plate, 5... Wood, 6... Lower end opening, 12, 13
...Rotating body, 23...Skinning blade.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A hopper formed between a pair of side plates facing each other and having a lower end opening between the lower ends of each side plate, and a hopper with a lower end opening provided in the width direction of the side plates. a plurality of rotating bodies arranged in parallel to each other and rotating so that each upper outer circumferential surface covers the lower end opening; and a hopper provided protruding from the outer circumferential surface of each of these rotating bodies when the rotating bodies rotate. A wood peeling machine characterized by being equipped with a large number of peeling blades for scraping up the wood inside. (2) The wood peeling machine according to claim 1, wherein the plurality of peeling blades are arranged spirally on the outer peripheral surface of the rotating body.