JPS633771Y2 - - Google Patents

Description

[Detailed description of the invention] A. Purpose of the invention (a) Industrial application field In the process of producing wood chips for paper pulp, the device is installed on the conveyance line from the drum barker (peeling machine) to the chipper, and is used to collect the peeling skin flowing from the drum barker. This is a device that removes bark from wood logs and parts of bark.

B. Prior art and its problems As shown in Figures 2, 3, and 4, a rectangular hole 1A is made in the discharge chute 1 of the drum barker, or a flange drive roller 1B is attached at right angles to the flow of logs. However, in this case, only fine bark can be removed.

As shown in FIG. 5, there is a method in which the belt conveyor 2A is separated and a flangeed drive roller 2 is placed in the middle at right angles to the flow, but in this case too, it is impossible to remove large or long bark.

There is also a method that separates the belt conveyor 2A as shown in Figure 6, but in this case, the bark can be completely removed, but short logs and pieces of wood are also removed at the same time, so they are picked up manually in a separate process. .

In addition, bark is manually removed during conveyance by a belt conveyor or the like, but this poses a problem in terms of labor saving.

B. Configuration of the device A. Means to solve the problem When removing bark mechanically as mentioned above, the roller shafts must be set at right angles to the direction of flow (the direction of the logs) and the shaft distance must be narrow, making it impossible to remove large bark, long bark, or bark wrapped around logs. Therefore, bark on the conveyor must be removed by hand. This device aims to make it possible to easily remove bark of all shapes without the need for any human labor.

B. Example 3 of the invention is the bark and auto separator of the invention, and 4
is the machine frame, and a main rotating body 5 is rotatably supported within the machine frame in the direction of flow of the logs.
This main rotating body 5 has a cylindrical shape.

Reference numeral 6 denotes a bark cutter, which is provided in a spiral manner protruding from the outer periphery of the main rotating body. The structure of this bark cutter is as shown in Fig. 12.
A substantially square-shaped step portion 6B is formed on the rotation direction side of the main rotating body. Regarding this step, there is a substantially square-shaped step 6 on the rotation direction side as shown in FIG.
C. The stepped portion 6D may be approximately curved as shown in FIG. 14, or the curved stepped portion 6E may be approximately curved as shown in FIG.

This bark cutter is used to rotate and swing logs, but at the same time it also cuts, crushes, and scrapes out the bark.

Reference numeral 7 designates a receiving blade of a bark cutter stretched between the side walls 4A, 4B of the machine frame 4 and the main rotating body 5, and is constructed in a comb shape so that the bark cutter 6 can be moved in and out.

An upper opening 7A provided over almost the entire length of the main rotating body 5 above the receiving blade 7 on the rotational direction side of the main rotating body 5 in the receiving blade 7 stretched from the machine frame.
A sub rotary body 8 is rotatably attached to the machine so that a part of the body protrudes into the machine. This sub-rotating body 8 has a projecting metal fitting 8A for bark discharge on the outer periphery of the cylindrical body.
8B are arranged spirally.

These projecting metal fittings 8A and 8B are used to help rotate and swing the logs, and are mainly used to discharge large and small logs out of the machine.

The protruding metal fittings 8A are short prismatic pieces arranged parallel to the rotation axis and arranged and fixed in a spiral shape, so that the protruding metal fittings 8A spirally move in and out of the opening 7A.
It is disposed so as to pass through the entire gap between A and the sub rotating body 8 in the longitudinal direction.

That is, although the protruding metal fittings 8A disposed on the auxiliary rotating body 8 are arranged in a spiral shape as described above,
The protruding metal fitting 8A located at the front and the protruding metal fitting 8A located at the rear in the rotational direction of the sub rotating body are configured to overlap each other (see the dashed line in FIG. 21). As a result, the sub rotating body 8
Since the projecting metal fitting 8A passes through the entire gap between the opening 7A and the opening 7A, bark and wood chips will not remain in this opening in a clogging state, and all of them will be discharged. The metal protrusion 8B has a sharp tip in the rotational direction, and is arranged in a spiral shape on the outer periphery of the sub rotating body 8, similar to the metal protrusion 8A. Naturally, the arrangement and combination of the protruding metal fittings 8A and the protruding metal fittings 8B will vary depending on the type of bark and the like. The rotation direction of this sub-rotator 8 is the same as the rotation direction of the main rotor 5. 9 is a motor for driving the rotating body.

C Operation A The main rotating body 5 and the sub rotating body 8 are rotated in a fixed direction by the driving motor 9.

(b) Logs mixed with bark are continuously fed from one end of the machine frame (log storage body) and are rocked by the rotating body and the bark cutter 6 and protruding metal fittings 8A and 8B fixed to the outer periphery of the rotating body. while proceeding to the other end and being discharged onto a conveyor connected to the outside of the machine frame.

C. Bark of various shapes mixed in when the log moves while repeating rotation and rocking motion easily falls downward and settles, and is cut or crushed by the bark cutter 6 and the comb-shaped receiving blade 7. It is discharged downward through the gap between the main rotating body and the comb-shaped receiving blade. However, the types of bark,
Due to the shape, hardness and softness of bark, it is not possible to remove all bark with a bark cutter. The bark that cannot be discharged from the gap between the main rotating body and the receiving blade is pushed up by the rotating and swinging log from the rotating side receiving blade 7 of the rotating body 5 toward the secondary rotating body 8, and is pushed up by the secondary rotating body 8 and the protrusion. It is scraped out from the upper part of the opening 7A by the metal fittings 8A and 8B, and is discharged to the outside of the machine.

D. Furthermore, with reference to Figure 20, the movement of the log,
The flow of bark will be explained in detail.

This is a cross-section of the general movement of logs discharged from the barker as they pass through the separator. As the main and sub-rotators rotate, the logs are pushed up from the main-rotator side to the sub-rotator side by the protruding metal fittings protruding from the respective outer peripheries, creating a trajectory that returns to the main-rotator side again.

In this case, the log traces the above-mentioned trajectory while being swung by the protrusion of the main rotating body and rotating in the opposite direction to the rotating body.

Therefore, the log rotated in the opposite direction by the main rotating body is pushed up while rubbing against the receiving blade stretched between the main rotating body and the auxiliary rotating body.

At the initial stage, the bark flowing into the separator moves in a trajectory similar to that of a log.

The rocking and rotating motion of the log causes the bark to sink downward, and fine bark (10 m or less) and dust are generally discharged downward through the comb-shaped gaps in the receiving blade.

However, large or long skins (10 m or more) are difficult to drain through the comb-shaped gaps. Large or long hides are smoothly carried up onto the curved receiving blade toward the sub-rotator by the orbital movement of the log and the rotation of the log itself.

The bark carried to the sub-rotating body is attached to the upper opening 7A by a protruding metal fitting protruding from the outer periphery of the sub-rotating body.
It is easily ejected from the top of the machine.

In addition, the following effects can be expected, especially since the protruding metal fitting 8B for discharging bark is configured to have a sharp tip in the rotational direction.

That is, this projecting metal fitting 8B aims at the effect of reducing the resistance when ejecting the bark.

First, the small pieces of wood that are discharged with bark include small pieces, thin pieces of wood, and small pieces of wedge-shaped wood that cannot be used as chips.
In addition, there are various types of bark, such as thick and thin, hard and soft, and those similar to the small pieces of wood mentioned above.
When these are discharged from the limited opening gap (14 mm) between the sub rotating body 8 and the upper opening 7A, considerable resistance is exerted.

In particular, if the above-mentioned wedge-shaped small piece of wood bites into this opening gap, the protruding metal fitting 8A will shear the tip of the wedge-shaped small piece of wood (the part that bites into it), so the resistance will be is quite large.

The solution to this problem is to split the tip of the wedge-shaped small piece of wood bitten by the metal protrusion 8B, thereby making it possible to reduce the shearing resistance caused by the metal protrusion 8A.

If the projecting metal fittings 8B are not provided, the driving portion will be seriously damaged due to extremely irregular shearing resistance, and stable operation and smooth bark ejection effect cannot be expected.

(e) An upper opening 7A is opened at the upper part of the side wall 4A on the rotation direction side of the main rotating body 5 among the left and right side walls, and an upper opening 7A is opened over almost the entire length of the main rotating body. 8 is installed so that a part thereof is exposed in the machine frame 4, so that the rotation of the sub-rotating body can effectively discharge the bark, and can also perform the rotational and raking-up action of the logs. .

C. Effects of the invention In the continuous chip production process, manually removing bark that could not be removed using conventional equipment on a conveyor is not only a labor cost issue, but is also difficult in terms of work efficiency. , it is dangerous work. By using the device of the present invention, logs and bark are automatically and continuously separated, which reduces production costs and allows safe operation.

In the figure, 10 is a drum barker, 10A is a log input port, 11 is a chute, 12 is a belt conveyor, and 13 is a chipper.

[Brief explanation of drawings]

Figure 1 is a side view showing the arrangement of the present application;
Figure 3 is a front view of the conventional model, and Figure 4 is a front view of the conventional model.
Figures 5 and 6 are enlarged side views of the main parts of the conventional model, Figure 7 is a partially cutaway schematic perspective view of the model of the present application, and Figure 8 is a vertical cross-section of the same. Top view, Figure 9 is an enlarged view of the main parts of the same as above, Figure 10 is A
- A view taken along line A, FIG. 11 is a plan view of the main rotating body, FIG. 12 is a sectional view of the same as above, and FIGS. 13, 14, and 15 are enlarged front views showing other embodiments of the bark cutter. , FIG. 16 is an enlarged front view of main parts showing the relationship between the main rotating body and the sub rotating body, FIG. 17 is a side view of the sub rotating body, FIGS. 18 and 19 are perspective views of the projecting metal fittings, and FIG. 20 21 is a cross-sectional view showing the operation, and FIG. 21 is an explanatory view showing the overlapping state of the projecting metal fittings on the sub rotating body. 3... Bark, auto separator, 4... Machine frame, 5... Main rotating body, 6... Bark cutter, 7
...Receiving blade, 8... Sub-rotating body, 9... Drive motor.

Claims (1)

[Scope of utility model registration request] A main rotary body 5 is installed at the bottom of the machine frame 4 consisting of left and right side walls 4A, 4B on a log conveyance line from the drum barker to the chipper, parallel to the flow (progress) direction of the logs. Bark cutters 6 are arranged and fixed in a spiral shape on the outer periphery, and are placed above the receiving blade 7 on the rotational direction side of the main rotating body 5 over almost the entire length of the main rotating body 5 in the receiving blade 7 stretched from the machine frame. The upper opening 7A is opened, and a sub rotating body 8 is provided in the upper opening 7A so as to be rotatable in the same direction as the rotational direction of the main rotating body 5, with a part of the sub rotating body 8 being exposed within the machine frame. Moreover, on the outer periphery of the sub rotating body 8, there is a projecting metal fitting 8A for bark discharge.
are arranged and fixed in a spiral shape parallel to the rotation axis, and a protrusion metal fitting 8B with a sharp tip is arranged and fixed in a spiral shape perpendicular to the rotation axis, and the protrusion metal fitting 8A The bark cutter 6 is disposed so as to enter and exit the upper opening 7A in a spiral manner and pass through the entire gap in the longitudinal direction between the upper opening 7A and the auxiliary rotating body 8. A bark auto separator characterized by being configured to correspond to the above.