JPS6133691B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Conventionally, a peeling device is already known that peels a log by moving a peeling rotating body having a large number of peeling blades in pressure contact with the circumferential surface of a log and moving the log relatively in the longitudinal direction and the circumferential direction. ing.

However, when the peeling device peels the bark of cedar or cypress trees, which have long fibers and are strong, the peeled bark wraps around the peeling rotor, making it impossible to peel the bark. It had to be removed, which reduced work efficiency and was extremely dangerous.

The present invention improves the above-mentioned drawbacks, is easy to manufacture, can reliably hold a bark cutting piece for cutting wrapped bark on a peeling rotating body, and can quickly replace the bark cutting piece. The object of the present invention is to provide a wood debarking device capable of debarking, in which a debarking rotary body having a number of debarking blades protrudingly provided at intervals in the circumferential direction is pressed against the outer periphery of a log, and the debarking rotary body is In a bark peeling device that peels a log while relatively moving it in the length direction and circumferential direction, an uneven part is provided on the side surface of the bark peeling rotary body, and a bark cutting piece for shredding the bark is engaged with the uneven part. It is also characterized by being detachably attached.

The embodiment shown in the drawings will be explained below.1
is a ring that is guided by a gate-shaped machine frame 1a, moves up and down together with the holding frame 1b, and rotates around a log inserted into a center hole. Swing arms 4... are mounted radially, each peeling rotary body 2... is forcibly driven, and in front and behind the ring 1 are chain conveyors 6 that move up and down in opposite directions, similar to the conventional ones. A transport device consisting of rollers 7 is provided.

As shown in FIGS. 3 and 4, the peeling rotary body 2 is constructed by protruding a large number of peeling blades 2b consisting of protrusions on the outer periphery of a rotary body 2a at regular intervals in the circumferential direction. The lead angle of the skinning blade 2b is appropriately selected between 0 and 45 degrees, and in this embodiment, it is 45 degrees.

Further, on the feed-side side surface of the peeling rotary body 2, there is an unevenness consisting of a plurality of arc-shaped protrusions 9 longer than the pitch of the peeling blade 2b and recesses 9a between the protrusions 9. is provided, and the skin cutting pieces 8 shown in FIG. 5 are fitted into the recesses 9a.
The skin cutting pieces 8 are fixed to the skin peeling rotary body 2 by inserting a bolt into the screw hole 2c of the skin peeling rotary body 2 and tightening the screws into the screw holes 2c of the skin peeling rotary body 2. The provided locking pieces 8b, 8b engage with the outer circumferential surface and inner circumferential surface of the protruding strip 9 to prevent the bark cutting piece 8 from rotating due to bark cutting resistance.

Furthermore, as shown in FIG. 3, the outer end of the skin cutting piece 8 is slightly lower than the skinning blade 2b in front view, and in side view, as shown in FIG. Cut the bark connected by this protrusion.

Further, on the outer circumferential side of the side surface on the delivery side of the peeling rotary body 2, the outer circumferential surface is smaller than the peeling blade 2b by, for example, 2 to 10 mm.
A donut-shaped disk 10 with a height of 2 mm (2 to 3 mm in the illustrated example) is fixed with screws 11 .

In the above-mentioned apparatus, the log is fed into the center hole of the ring 1 by the transfer device, and the swinging arm 4 is swung by the air cylinder to press the peeling rotary body 2 against the outer circumferential surface of the log, and the log is moved at a constant speed. The peeling rotary body 2 rotates on its own axis and revolves around the log together with the ring 1, thereby peeling the log.

At that time, since the fibers of the bark of cedar and cypress are strong, the peeled bark tries to wrap around the log and the bark stripping rotary body 2, but the bark cutting piece 8 cuts it short.

During this bark cutting, the bark cutting pieces 8 are screwed while engaging with the irregularities on the side surface of the bark peeling rotary body 2, so even if a large cutting resistance is applied to the bark cutting pieces 8... The protruding piece 8 is firmly held without rotating and can reliably cut the bark.

Note that the skin cutting piece 8 prevents rotation of the skin cutting piece 8.
Since this is based on the engagement of the surface of the skin with the unevenness on the side surface of the peeling rotary body 2, it is of course possible to replace it with other means having the same effect.

In addition, when the cut part (corner) of the skin cutting piece 8 is worn out, by rotating the skin cutting piece 8 180 degrees and attaching it, the unused other end can be used, and a new skin cutting piece can be used. It is also easy to replace it with 8.

Next, another embodiment of the present invention will be described with reference to FIG. 6. Reference numeral 20 is a pair of front and rear wood grips that penetrate into the end of the log and rotate, and the peeling rotary body 2 is the same as in the previous embodiment. It is pivotally supported by the lower ends of a pair of left and right swinging arms hanging from the gate frame.
It is forcibly driven to rotate by an appropriate transmission mechanism and is in pressure contact with the circumferential surface of the log, and the log is held in a wooden grip 2.
The log can be debarked by holding it at zero and moving it in the length direction while rotating it, or by rotating the log at a fixed position and running the portal frame in the length direction of the log.

In this embodiment as well, the bark cutting piece 8 cuts the wrapped bark into short pieces.

Since the present invention is configured as described above, the fibers of cedar and cypress bark are extremely strong and wrap around logs and barking rotors, but it is possible to cut them short with the bark cutting piece, which is dangerous and There is no need to perform skin removal work that takes a long time, and the skin can be removed with high efficiency and extremely easily.

In addition, since the skin cutting piece can be attached to and removed from the side surface of the skin peeling rotor, it can be manufactured and attached separately from the skin peeling rotor, and the cost can be reduced compared to a piece that is formed integrally with the skin peeling rotor. When the bark-cutting piece is worn, the bark-cutting piece can be attached and removed separately from the bark-peeling blade, and the bark that has been peeled off and is in an unstable state can be accurately and sharply removed with a sharp bark-cutting piece. Can be peeled with high efficiency.

Furthermore, when cutting the bark, an extremely large cutting resistance is applied to the bark cutting piece, but since the bark cutting piece is attached by engaging with the uneven part on the side surface of the bark peeling rotary body, the bark cutting piece can be cut easily. The bark will not be deviated due to cutting resistance, and the bark can be cut reliably over a long period of time while being firmly held.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view of the skinning section of the ring barker, FIG. 2 is a side view of the transfer device, FIG. 3 is a front view of the skinning rotary body, and FIG. FIG. 5 is a front view of the skin cutting piece, and FIG. 6 is a side view of another embodiment. DESCRIPTION OF SYMBOLS 1... Ring, 2... Skin peeling rotating body, 2b... Skin peeling blade, 8... Skin cutting piece, 9a... Notch part.

Claims (1)

[Claims] 1. A peeling rotating body having a number of peeling blades protruding at intervals in the circumferential direction is pressed against the outer periphery of the log, and the peeling rotating body is peeled while relatively moving in the lengthwise direction and the circumferential direction of the log. A wood peeling device characterized in that an uneven portion is provided on a side surface of the peeling rotary body, and a bark cutting piece for shredding bark is engaged with and detachably attached to the uneven portion.