JPH0213127Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to the improvement of a cutter for grinding wood.
More specifically, the present invention relates to an improvement of a drum-shaped cutter for a grinding powder manufacturing device.

<Prior Art> A rotary cutter for a conventional grinding powder production apparatus includes, for example, the one shown in Japanese Utility Model Publication No. 59-5527.

This is a disk a with a cutting edge part B, which is provided with a cutting edge part b on the outer periphery of a disk a, and is deformed so that the cutting edge parts b at opposing positions on the outer periphery of the disk a are displaced in the same direction as the axis of the disk a.
is formed by bending or curving the disk into two along the diameter of the disk, and spacing disks c, in which the disks with cutting edge parts are arranged at appropriate intervals, are alternately superimposed and fixed. It is something.

However, as shown in FIG. 2, this spacer is a disk (short cylinder), and the diameter is almost the same everywhere. Therefore, the ground powder is evenly accumulated on the circumferential surface of the spacer c, that is, between the disks a and a, and it becomes clogged and holds down the wood that comes later. As a result, the wood did not come into contact with the cutting edge parts b and b, causing idle rotation. In order to solve this problem, a spacer c' as shown in FIG. 3 was proposed. This has tapered surfaces e on both end edges of the spacer c'.
The two tapered surfaces e, e meet at an appropriate angle (usually around 90 degrees).
Therefore, the confluence is a corner. With this improvement, the ground powder entering between the cutting edges b and b is distributed to both end edges of the spacer c' by the tapered surfaces e and e and released. The above configuration makes it difficult for ground flour to clog the cutter.

<Problem to be solved by the invention> However, in the conventional cutter for grinding flour that has been improved as described above, the wood that is sent to the cutter to be processed into flour is cutter on the surface of the cutter during processing. This often caused the machine to shake, making it impossible to process the machine. The reason for this is that when the wood that is fed by a conveyor, rollers, etc. is cut into a cutter, the part of the wood surface that enters between the cutting edge parts b and b and is next to be sawn is the tapered surface e. , e is bitten into the confluence (corner). In other words, when the wood is fed in this state and the rear part of the wood is released from the feeding means, the presser foot is removed and the front part of the wood (the part bitten by the spacer c') becomes neck due to the displacement of the cutting edge parts b and b. It will be shaken. As a result of this situation, a decline in work efficiency and productivity became a problem. Therefore, the present invention aims to solve the above-mentioned problems while preventing the ground powder from clogging the circumferential surface of the spacer.

<Means for solving the problem> Therefore, the present invention has a cutting edge section on the outer periphery of the disk, and the cutting edge section is deformed so that the cutting edge sections at opposing positions on the outer periphery of the disk are displaced in the same direction as the axis of the disk. A disc formed by bending or curving the disc in two along the diameter of the disc, and a spacer disc in which the discs with cutting edge parts are arranged at appropriate intervals are alternately superimposed and fixed. In the cutter for ground flour, the diameter of the outer circumferential surface of the spacer is the largest at approximately the center, and the diameter gradually decreases toward both edges of the outer circumferential surface, forming two slopes for releasing ground powder. However, the present invention provides a cutter for grinding powder characterized in that the confluence region of both slopes is a curved arm surface.

<Function> Since the confluence area of the two ground powder relief slopes on the outer periphery of the spacer is a curved arm surface, this confluence area will not bite into the wood surface that comes into contact here. Therefore, even when the rear part of the wood is released from the feeding means and the presser foot is removed, the wood does not swing due to the displacement of the cutting edge, and the cutting edge moves sequentially on the surface of the wood to ensure smooth machining. I can do it.

<Example> An example of the present invention will be described below based on the drawings.

FIG. 1 shows an embodiment of the present invention. This is an improved version of the spacer for the cutter for grinding flour seen in Japanese Utility Model Publication No. 59-5527. First, a disk-shaped saw 2 having a cutting edge 1 such as a chip formed on its circumferential surface is bent with one of its diameters as a crease to form a dogleg shape when viewed from the side. A plurality of these saws 2 are stacked to form a drum-shaped cutter, and spacers 3, 3 are sandwiched between each saw 2, 2. Like the saw 2, this is a disc bent into a dogleg shape and shaped to correspond to the space between the saws 2. Both end edges 4, 4 of the outer periphery of the spacer 3 are tapered surfaces, and the merging portion 5 of this tapered surface is a curved surface. Further, in this embodiment, both tapered surfaces form an angle of approximately 135° with respect to each other, but the present invention is not limited to this.

With the above configuration, a rotary drum-shaped cutter is formed.

<Effect> It is possible to grind wood smoothly while preventing the cutter from clogging with ground powder, and the efficiency and productivity of grinding powder production is significantly improved.

In addition, since the powder can be ground smoothly, it has become possible to significantly reduce the load on the manufacturing equipment.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part showing an embodiment of the present invention, FIG. 2 is a sectional view of a main part showing a conventional example, and FIG. 3 is a sectional view of a main part showing another conventional example. 1...Blade tip, 2...Saw, 3...Spacer, 4...
...edge part, 5...merging part.

Claims (1)

[Scope of utility model registration request] A disk with a cutting edge is provided with a cutting edge on the outer periphery of the disk, and the cutting edge portions at opposing positions on the outer periphery of the disk are deformed so as to be displaced in the same direction as the disk axis, and the disk with the cutting edge is bent in two along the diameter of the disk. Alternatively, in a cutter for grinding powder formed by alternately superimposing and fixing a cutter deformed to curve and a spacer disc in which the discs with cutting edge portions are arranged at appropriate intervals, the outer circumferential surface of the spacer disc is The diameter is the largest at approximately the center, and the diameter gradually decreases toward both edges of the outer circumferential surface, forming two slopes for releasing ground powder, and the confluence area of both slopes is the curved arm surface. A cutter for grinding flour.