JPS6224484Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cutter for stripping bark, and more specifically, to a cutter equipped for stripping bark and for cutting.

In recent years, the supply of raw wood has increased in proportion to thinned wood such as cedar, cypress, and pine. However, these thinned woods have a large number of knots, and conventional cutters cannot remove the knots. Sometimes the bark around the tree was left behind. Also, bark stripping machines have been developed for the purpose of stripping only the bark, so most of them are of the type that swings the cutter part to follow the surface shape of the log. On the other hand, when cutting wood, the swinging of the cutter could damage the wood, resulting in an unsatisfactory finish.

The present invention was developed in order to solve these conventional problems, and the purpose is to provide a cutter that can remove the bark and knots of logs in a single process and has a beautiful finish. It is something.

In order to achieve the above object, the present invention provides a cutter for bark stripping in which a plurality of cutting blades are formed on the periphery of a cylindrical cutter drum, and a ring with the same height as each cutting blade is formed on both sides of the drum. It consists of a knotting cutter having a cutting edge protruding from the block on each side of a square block, and a cutter plate fixed so that the amount of protrusion of the cutting edge can be adjusted, and the knotting cutter is attached to the side of the bark stripping cutter. It is characterized by being removably connected.

The details of the invention will now be explained with reference to illustrated embodiments. The cutter of the present invention is composed of a bark stripping cutter 1 and a knot cutting cutter 2.
The knot cutting cutter 2 is integrally assembled with the side part of the bark stripping cutter 1 by tightening and fixing with bolts 3, 3, and a shaft hole 4 passing through the two cutters is provided.

The bark stripping cutter 1 has a plurality of cutting blades 11, 11 formed on the periphery of a cylindrical cutter drum 10 obliquely with respect to the axial direction, and each cutting blade 11, 11 is formed on both sides of the cutter drum 10. Rings 12, 12 of the same height as 11 are formed, and each ring prevents the cutting blades 11, 11 from biting into the surface of the log.

Also, the cutter 2 for cutting is a rectangular block 2.
0, and cutter plates 22, 22 with cutting edges 21 protruding from the block 20 are fixed with bolts 23, 23, and are joined to the side surface of the bark stripping cutter 1 so that the shaft holes 4 are aligned. There is. In order to adjust the protruding length of the cutting edge 21 of the cutter plate 22, the bolt hole 24 is formed into a long hole, and by loosening the bolt 23, the protruding amount of the cutting edge can be changed. Furthermore, the cutting edge 2 of the cutter plate 22
One portion of the block 20 is overlapped with a tongue piece 20a projecting sharply from the corner of the block 20, and protects the cutter plate 22.

The present invention has the above-described structure, and the cutter is attached to a bark stripping machine by inserting a rotating shaft (not shown) into the shaft hole 4.

A good bark stripping machine is a rotary barker, for example, in which the cutter rotates on its own axis and revolves around the log.Also, the log is first cut with a knotting cutter 2 as shown in Figure 4. is in contact with the log, and then the cutter 1 for bark stripping is brought into contact with the log, and during the bark stripping operation, the cutter is pressed against the log with appropriate pressure.

In the bark stripping work, first, the cutting edges 21, 21 of the cutter 2 for cutting the bark scrape off the knots of the log, and then the cutting blades 11, 11 of the cutter 1 for bark stripping scrape the bark while scraping it, so it takes one stroke. This will allow you to cut the knots and strip the bark.

The cutting depth of the cutter during bark stripping work varies depending on the pressure of the cutter, but the rings 12, 12 provided on both sides of the cutter drum 10 of the bark stripping cutter 1 are designed to prevent the cutting blades 11, 11 from touching the woody part. On the other hand, since it prevents unnecessary biting, it can also be applied to soft woody materials.

In addition, since the bark stripping cutter 1 and the knot cutting cutter 2 are connected with bolts 3, 3,
By removing this bolt, the cutting edges of each cutter for bark stripping and knot cutting can be polished independently. Moreover, in the cutter 2 for cutting, when the cutter plate 22 is damaged, it can be replaced.

As explained above, the present invention is a bark stripping cutter with a plurality of cutting blades formed around the periphery of the cutter drum, and a cutter plate with a cutting edge protruding from the block on each side of a polygonal block. Since the tree cutters are joined together with bolts, the knots and bark can be completely removed in one step of the bark stripping process, and a log with a beautiful finish can be obtained.

Therefore, logs processed with the cutter of the present invention can be supplied to the market without any finishing work.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the entire assembled cutter of the present invention, Fig. 2 is a front view seen from the joint cutter section, Fig. 3 is a partially broken side view, and Fig. 4 is a use of the cutter of the present invention. It is a schematic side view which shows a state. 1... Cutter for bark stripping, 2... Cutter for knot cutting, 3... Bolt, 4... Shaft hole, 10... Cutter drum, 11... Cutting blade, 12... Ring,
20...Block, 21...Blade tip, 22...Cutter plate, 23...Bolt, 24...Bolt hole.

Claims (1)

[Scope of utility model registration request] A bark stripping cutter has multiple cutting edges formed around the periphery of a cylindrical cutter drum, and a ring at the same height as each cutting edge on both sides of the drum, and a cutting edge on each side of a polygonal block on the side. It consists of a cutter for cutting, which is equipped with a cutter plate that protrudes and is fixed so that the amount of protrusion of the cutting edge can be adjusted.
A bark stripping cutter, characterized in that a knotting cutter is detachably connected to a side surface of the bark stripping cutter.