JPH0250803A - Bark-peeling device of raw wood - Google Patents

Abstract

PURPOSE:To contrive to reduce installation area and to simplify sweeping, while raw wood is prevented from being damaged by carrying out automatically the peeling operation of the raw wood in a standing pose, while high pressure water is blown against the raw wood. CONSTITUTION:Raw wood A is placed on a turntable 2, and while high pressure water is blown against the raw wood A from a nozzle 51 in the state where the upper end of the raw wood A is in rolling contact with a supporting roller 3; when the nozzle 51 is raised and lowered along a rail 6, the bark of the raw wood A in the prescribed width range Z, opposite to the rail 6, is peeled. Next, when the turntable 2 is rotated by 30 deg., the raw wood A is rotated around the rotary axis (m) of the turntable 2, and new range is caused to be apposite to the rail 6. In this state, when the nozzle 51 is again raised and lowered, the bark in said range is also peeled by the high pressure water from the nozzle 51. The raw wood A is movable in almost standing pose, and the operation in a series may be sufficiently achieved by one man always except the case of remarkably large wood.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a log debarking device used for debarking work to convert felled logs into so-called logs.

[Prior Art] Logs used for floor pillars and the like are manufactured and shipped by subjecting felled logs to a debarking process.

Conventionally, such debarking work was carried out by scrubbing the surface of the log with a scrubbing brush or rotating brush, but such tools tend to scratch the surface of the log that will become the product (
, there was a risk that the appearance would deteriorate and the product value would decrease.

Therefore, recently, a log peeling device has been developed that sprays high-pressure water onto the surface of the log to remove the bark without causing scratches. That is, a conventional log peeling device of this type includes a support means that rotatably supports the outer periphery of both ends of the log from below by support rollers to support the log in a substantially horizontal position, and a device supported by the support means. A rail disposed above the raw wood, a water spraying means for spraying high-pressure water for peeling from a nozzle toward the raw wood, a nozzle transfer mechanism for horizontally reciprocating the nozzle of the water spraying means along the rail, and the nozzle. It is known that the transfer mechanism includes a roller drive mechanism that intermittently rotates the support roller by a predetermined angle each time the transfer mechanism completes one unit operation and the peeling work of a predetermined width area on the surface of the log is completed. .

[Problems to be Solved by the Invention] However, the conventional apparatus requires a large installation space because it is necessary to set the raw wood horizontally.

In addition, with this arrangement, the peeled skin is scattered over a wide area, resulting in a problem that cleaning work takes time.

Furthermore, as is well known, this type of log is stored in a leaning position, and logs for floor pillars, etc.
A human worker can move it to a desired position as needed while standing up.

However, even if the log can only be moved in parallel while standing up, it can be safely done by one worker.
The reality is that two workers are required to lay the log horizontally, taking care not to damage it, and reliably set it in the log peeling device described above. Therefore, it is difficult to save labor, and some kind of improvement is strongly desired.

The present invention aims to solve the above problems.

[Means for Solving the Problems] In order to achieve the above object, the present invention employs the following configuration.

That is, the log peeling device according to the present invention includes a turntable that is arranged upward with its rotation axis tilted in a certain direction and supports the lower end of the upright log, and the outer periphery of the log supported on the turntable. A support roller that rotatably supports the surface of the log to prevent the log from tipping over, a rail placed approximately parallel to the log placed on the turntable, and a nozzle that supplies high-pressure water for peeling the log to the log. a nozzle transfer mechanism that moves the nozzle of the water spray means up and down along the rail, and when the nozzle transfer mechanism completes one unit operation, it performs debarking work on a predetermined width area on the surface of the raw wood. The present invention is characterized by comprising a table drive mechanism that intermittently rotates the turntable by a predetermined angle each time the turntable is completed.

[Operation] Preparation for the peeling work is completed by placing the log on the turntable and rolling the upper end of the log against the support roller. In this state, when high-pressure water is sprayed from the nozzle toward the log and the nozzle is moved up and down along the rail, the skin of the log in a predetermined width region facing the rail is peeled off.

Next, when the turntable is rotated by a predetermined angle,
The log rotates around the rotation axis of the turntable,
A new area will be facing the rail. If the nozzle is moved up and down again in this state, the skin in that area will also be peeled off by the high pressure water from the nozzle.

By repeating the above operations multiple times, you can complete the debarking process on the log, but with this kind of configuration, you can move the log in an upright position and place it on the turntable. The raw wood can be set in the device by simply placing it there, and the raw wood that has undergone the debarking process can be moved in an upright position and placed against a predetermined storage location.

Since such a device can process logs in an upright position, the installation area can be significantly reduced compared to a device that processes logs with the logs lying horizontally.

Moreover, the skin peeled off from the log in an upright position can be easily dropped into a narrow area by providing a simple enclosure or the like.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 and 2.

This log peeling device is constructed on a movable trolley 1, and a support frame 13 having a height approximately corresponding to the length of the log A is assembled on a floor plate 12 movably provided by casters 11. Then, the log A is propped up against the support frame 13, and high-pressure water is sprayed onto the surface of the log A while rotating the log so that the bark can be peeled.

Specifically, the log A is supported by a turntable 2 and a support roller 3. Turntable 2 is
It is connected to the output shaft 41 of the table drive mechanism 4 which is tilted and fixed on the floor plate 12 so that the rotational axis m coincides with the output shaft 41, so that the table surface 2a is tilted at a constant angle with respect to the horizontal plane. It is set up. A non-slip receiving plate 21 is attached to the table surface 2a, and the lower end a of the raw wood A raised upright is placed on this receiving plate 21. On the other hand, the support rollers 3 are rotatably mounted on corresponding parts of the support frame 13 and are rotatably mounted on shafts so that the outer peripheral surface of the log A supported on the turntable 2'' can be supported in the vicinity of its upper end. It's a dress. Both support rollers 3
Both have their axis n set in a substantially vertical direction, and are inverted at parts that are offset to the left and right from the center m of the log A to stop receiving the load that causes the log A to tilt, and also cause the log A to rotate. It is possible to continuously maintain a supported state while rolling on the outer peripheral surface.

In addition, in order to spray high-pressure water on log A, nozzle 51
A water discharging means 5 having a water discharge means 5, a rail 6 for attaching a nozzle 51, and a nozzle transfer mechanism 7 for moving the nozzle 51 up and down along the rail 6 are provided. The rail 6 has a support 14 fixed to the floor plate 12 and the support frame 13 in a tilted state.
are fixedly supported via metal fittings 15, and each part thereof is arranged so as to be substantially parallel to the raw wood A placed on the tongue table 2. Then, on this rail 6, the main body 7
By setting the two pairs of wheels 72 that are pivoted on the wheels 72 and gripping them from both sides, the nozzle transfer mechanism 7 is fixed so that the nozzle transfer mechanism 7 cannot be removed. A non-slip layer made of urethane or the like is provided at the portion that engages with the wheel (not shown).The main body 71 of the nozzle transfer mechanism 7 is provided with a motor (not shown) capable of driving the wheels 72 in forward and reverse directions. This motor is equipped with rail 6
The drive direction for the wheels 72 can be switched between the turning point X near the upper end and the turning point Y near the lower end of the rail 6, and the nozzle transfer mechanism 71 is caused to reciprocate between the turning points XX7. I'm trying to get it.

Further, the nozzle 51 is attached to the main body 71 of the nozzle transfer mechanism 7 with the spout 51a facing the rotation axis m of the upright log A. The water spraying means 5 is this nozzle 51
In addition, a hose 52 that pumps high-pressure water to the nozzle 51 and a high-pressure pump that supplies high-pressure water to the hose 52 are provided. Then, high-pressure water with a pressure of, for example, about 140 kg/ant can be injected from the nozzle 51 toward the center of the log A.

Further, the table drive mechanism 4 described above is configured to move the nozzle transfer mechanism 7 into a predetermined width area Z (corresponding to the area between the turning point ) every time the peeling work is completed,
A drive circuit is built in to operate a motor section in conjunction with the nozzle transfer mechanism 7 so that the turntable 2 can be rotated intermittently in a fixed direction by a predetermined angle (for example, 30 degrees).

Note that the hose 52 is attached to a pulley 16 fixed to the top of the support column 14.
A weight 17 is suspended midway through the hose 52, so that the length of the hose 52 can be smoothly adjusted as the nozzle transfer mechanism 7 moves up and down. In addition, a vinyl sheet 1 is attached to the support frame 13 of the movable trolley 1.
8 is coated to prevent the peeled epidermis from scattering.

Next, the procedure for actually performing peeling work using the apparatus of this embodiment will be explained. First, the raw wood A is placed on the turntable 2 and the upper end of the raw wood A is brought into rolling contact with the support roller 3, thereby completing the preparation for the peeling operation. In this state, when high-pressure water is sprayed from the nozzle 51 toward the log A and the nozzle 51 is moved up and down along the rail 6, the skin of the log A in a predetermined width region Z facing the rail 6 is peeled off.

Next, when turntable 2 is rotated by 30 degrees,
The log A rotates around the rotation axis m of the turntable 2, and a new area faces the rail 6. If the nozzle 51 is moved up and down again in this state, the skin in that area will also be peeled off by the high pressure water from the nozzle 51.

By repeating the above operation 12 times in this embodiment, the barking process of the raw wood A is performed over the entire circumference, and the barking work is completed. With such a configuration, the log A can be set in the device by simply moving the log A, which is propped up, in an upright position and placing it on the turntable 2. Furthermore, by moving the log A that has undergone the peeling process in an upright position, it can be placed against a predetermined storage location. Therefore, unless the log A is very large, this series of work can be completed by one person, and there is no need for the inconvenience of having to involve multiple people. . Furthermore, if the log A is carried in an upright position, it is less likely that the tip of the log A will collide with surrounding objects and damage them, or that the log A as a product will be damaged.

Since such a device does not require a large space to lay the log A horizontally, the installation area and work area of the device are significantly reduced, and the degree of freedom in selecting the installation location is increased.

Moreover, the skin peeled off from the log A in an upright position is collected directly on the floorboard 12 by natural fall, and even if some of it scatters in all directions, it is blocked by the vinyl sheet 18, so that it can spread over a wide area. There is no clutter and cleaning is extremely easy.

Although one embodiment of the present invention has been described above, the predetermined width region Z can be changed as desired by simply adjusting the folding points X and Y. Furthermore, the intermittent rotation angle of the table drive mechanism, the inclination angle of the log, etc. are not limited to those in the illustrated embodiment, and may be changed as appropriate depending on the size of the log, the purpose of the work, the condition of the installation location, etc. It is something that should be done. In addition, various modifications can be made without departing from the spirit of the present invention.

[Effects of the Invention] As described above, the log debarking device of the present invention automatically performs the debarking work of the log while spraying high-pressure water, so it can perform the work without damaging the log and without requiring human labor. This makes it possible to do the following. At this time, the structure is such that the debarking work is carried out while the log is in an upright position, so there is no need to change the posture of the log each time the log is transported, set up, or stored. This makes it possible to reliably reduce labor and to significantly reduce the installation area of the device. Further, with such a material, the peeled epidermis will not be scattered over a wide area, so cleaning can be easily completed.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view showing a state in which logs are set, and FIG. 2 is a perspective view.

Claims (1)

[Claims] A turntable is arranged upward with its axis of rotation tilted in a certain direction and supports the lower end of the upright log, and the outer peripheral surface of the log supported on the turntable is rotatably supported so that the log is a support roller for preventing falling; a rail arranged substantially parallel to the raw wood placed on the turntable; a water spraying means for spraying high-pressure water for peeling from a nozzle toward the raw wood; a nozzle transfer mechanism that moves the nozzle of the means up and down along the rail;
The nozzle transfer mechanism is characterized by comprising a table drive mechanism that intermittently rotates the turntable by a predetermined angle each time the nozzle transfer mechanism completes one unit operation and the debarking work of a predetermined width area on the surface of the raw wood is completed. Log debarking equipment.