JPS5950482B2 - Automatic log peeling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for automatically stripping the bark of logs.

Sand, pebbles, shells, and other substances adhere to the logs during transportation, and some of these particles are embedded inside the bark.

Therefore, if the untreated material was put on a rotary lace for cutting, the expensive cutting blade could be damaged.

The present invention has been made in view of the above, and aims to completely remove the skin of the surface layer within a short period of time without damaging the inner layer using a simple and robust device.

The apparatus of the present invention will be explained below with reference to drawings showing an embodiment of the invention. Reference numeral 1, 1 denotes a fixed support frame, which is installed on a machine stand 2, each having a bearing surface 3°3 at its upper end, and a left drive shaft 4. handed over.

This left drive shaft has one end connected to the motor 5 on the machine base 2 and the reducer 6.
and rotated at an appropriate speed.

Reference numeral 7 denotes a movable frame, one side of which is supported by bearing surfaces 8, 8 on the left drive shaft 4, and the lower surface of the other side supported by telescopic struts 9, 9 from the machine base 2; The right drive shaft 10 parallel to the left drive shaft 4 is connected to the bearing surface 1.
1 and 11, and is connected to a motor 12 whose one end is supported by a movable frame 7 via a speed reducer 13 which is also supported, and is rotated at an appropriate speed.

14 is an endless chain, which has a chain wheel 15 fixed to the left drive shaft 4 and a chain wheel 16 freely supported to the right drive shaft 10.
The blades 18 are attached to the outer circumferential edge of the blades by brackets 17 at predetermined intervals.

19 is also an endless chino, and contrary to the above, the left drive shaft 4
The chain wheel 20 is freely supported and the chain wheel 21 is fixed to the right drive shaft 10, and cutters 18 are attached to the outer periphery of the chain wheel 20 with brackets at predetermined intervals.

Next, regarding the direction of rotation of the left and right drive shafts 4 and 10, as shown in FIGS. 3 and 4, they are rotated to move the endless chino 14 in the A direction and the endless chino 19 in the B direction. The drive shaft 4 rotates 20% faster than the right drive shaft 10.

The arrangement structure of the endless chinos 14 and 19 is not limited to alternate arrangement as in the illustrated example, but two chinos may be provided in the same direction depending on the width of the blade 18.

In addition, 22 is raw wood, and 23 and 24 are transfer belts.

Since the present invention is constructed as described above, when the raw wood 22 is now transferred onto the movable frame 7 by the transfer belt 23, it is placed on the endless chinos 14 and 19.

At this point, start the motors 5 and 12 and drive the left and right drive shafts 4 and 1.
0, the endless chinos 14 and 19 move in the A direction and the B direction.

Since the blades 18 provided on the outer periphery move in opposite directions in accordance with the direction of the endless chino, the raw wood 22 is subjected to sliding friction by the blades 18 on its contact surface, and is cut by weight pressure.

At this time, since the moving speed of one of the endless chains 14 is fast, the log 22 is rotated on both endless chains 14 and 19 by the difference in moving speed between the two.

Therefore, the log is rotated and the skin is removed from the entire outer surface.

In this way, peeling is completed by simply rotating the log 22.

Next, when the telescopic column 9 is extended by hydraulic pressure, the movable frame 7 rotates upward around the left drive shaft 4, tilts the entire frame, turns the log 22, and sends it to the transfer belt 24.

As shown in FIG. 1, the movable frame 7 is covered with a box-shaped cover 25 on the upper side, a water receiving tank 26 is arranged on the lower side, and high-pressure water is sprayed from a nozzle 27 provided on the box-shaped cover 25. The outer peripheral surface of the log 22 may be washed with water and subjected to a peeling process.

It goes without saying that the moving direction of the endless chinos 14 and 19 and the speed difference between them can be freely set by changing the rotational direction of the motor and the reduction ratio of the reduction gear.

Since this invention is as described above, it is possible to remove the skin from the entire circumference without straining the log.

In particular, the log moves to the lower part of the endless chino due to gravity, so it never falls outward from the left and right side edges.
Even if the shape of the raw wood is distorted, the endless chain side automatically adjusts so that it rotates smoothly and receives cutting evenly, and the frame that supports the drive shaft can be moved as in the example. Then, by tilting it, it can be easily transferred to the other side.Furthermore, if a water washing device is installed as in the embodiment, it is possible to wash off the cutting waste in addition to water washing at the same time. The effect is remarkable.

[Brief explanation of the drawing]

Fig. 1 is a front view of the device of this invention, Fig. 2 is a plan view of the main part, Fig. 3 is a partially cutaway enlarged front view of the main part, and Fig. 4 is an endless chino equipped with a blade and its drive. FIG. 5 is a partially enlarged plan view showing the support structure for the shaft, FIG. 5 is a partially enlarged side view of an endless chino equipped with a cutter, and FIG. 6 is a sectional view taken along line Y--Y in FIG. 1...Fixed frame, 2...Machine base, 3
...Bearing surface, 4...Left drive shaft, 5...
...Motor, 6...Reducer, 7...
...Movable frame, 8...Bearing surface, 9...
・・Telescopic column, 10... Right drive shaft, 11...
...Bearing surface, 12...Motor, 13...
...Reducer, 14...Endless cheno, 15...
...Chain wheel, 16...Chain wheel, 17...
・Bracket 18... cutler, 19...
Endless Cheno, 20... Chain wheel, 21...
Chain wheel, 22... Log.

Claims (1)

[Claims] 1 Drive shafts are arranged parallel to each other at a predetermined interval, and the chain wheels are placed on each drive shaft in correspondence with each other on the left and right sides, and the required number of chain wheels are placed in the shape of an inner lid at an appropriate interval between each other on the left and right sides. One of the corresponding chain wheels is fixed to the drive shaft, the other is supported loosely, and endless chain wheels with opposite moving directions and different speeds are strung along the drive shaft. Cutters are attached to the outer periphery at predetermined intervals, the raw wood is supported on the cutlery of an endless chain chain stretched by chain wheels, and the cutters are rubbed against the raw wood from opposite directions by the operation of the endless chain wheel. An automatic log peeling device characterized by rotating the log in the speed difference direction and automatically peeling the entire outer periphery.