JPH03217254A - Rotary knife - Google Patents

Abstract

PURPOSE:To thoroughly prevent fall of a rotary knife by forming a notched groove to a holder fitted to a rotary drum and constituting a U-shaped projection engaged with this notched groove to a knife axis. CONSTITUTION:Notched grooves 2 are formed to a rotary drum 1 or a rotary board. The V grooves 4, 4' for pinching the knife axis 7 of a prismatic rotary knife 6 are formed to a pair of front and rear holders 3, 3' which are freely detachably fitted to the notched grooves 2. A U-shaped groove 5 deeper than the V grooves 4, 4' is formed to the front holder 3. A U-shaped projection 8 engaged with this U-shaped groove 5 is formed to the knife axis 7. Therefore when the knife axis 7 of the rotary knife 6 is arranged into the V groove 4 of the front holder 3, height of the knife is specified only by engaging the U-shaped projection 8 with the U-shaped groove 5 and stray attachment is made easy. Especially since the rotary knife 6 is pinched into the notched grooves 2 of the rotary drum 1 by the V groove 4' of the rear holder 3', the U-shaped projection 8 is not separated from the U-shaped groove 5 regardless of bonding the knife axis 7 in the front and rear holders 3, 3'. The rotary knife 6 is made durable to strong centrifugal force and gravitation while it is operated and fall of this rotary knife 6 is thoroughly prevented.

Description

[Detailed Description of the Invention] (Field of Application in the Koto Industry) This invention is for use with rotary blades attached to a rotating body or rotary disk, and is used for food, medicine, fertilizer, feed, wood, rubber, ore, etc. It has a wide range of applications, from processing and manufacturing through crushing and crushing to recycling of industrial waste.

(Prior art) Patent No. 1443533, PCT/JP
85/00430 (.U.S. Pat. No. 4,747.552,
4.779.811), the method of fixing the blade pieces is arbitrary, but an example is given in which a notch is provided on the blade shaft, the blade shaft is supported by a holder, and fixed with adhesive.

Further, the roll crushing blade of Patent Application No. 304279 of 1988 also exemplified a similar fixing method, although the method of fixing the blade piece is optional.

Next, the device for fixing the rhombus-shaped prismatic rotary blade in Patent Application No. 272130 of 1986 fixes a ring to the blade shaft, so that even if a strong centrifugal force is applied during operation, even one rotary blade will fall off. The idea is to make sure that you don't have to.

(Problem to be Solved by the Invention) In the above example, a U-shaped groove is provided on the rotary blade shaft and the front holder, and the wire is passed through the blade to make the blade height constant, then fixed with adhesive, and then hooked into the holder. However, due to the centrifugal force of high-speed rotation and the strong gravitational force during operation, some of the rotating blades were seen to fall off. This is because there were only nine wires and the stitching was weak, so it could not withstand the great force and fell off. Therefore, it was found that a rotary blade with a U-shaped groove formed on the rotary blade shaft could not prevent the blade from falling off. Next, we tried to fix a ring to the rotary blade shaft to prevent it from falling off, but it was too time-consuming and could not be put into practical use. Therefore, instead of using a blade shaft structure that uses wires or links to adhesively fix the rotating blade to the holder, it can withstand the strong centrifugal force and gravitational force during operation.
The problem was the structure of the blade shaft that completely eliminates the possibility of it falling off. <Means for solving rsu) This invention is a method for attaching a blade to a blade shaft of a rotary blade that is clamped to a holder attached to a rotary body or a rotary disk, and is different from the conventional method in which a U-shaped groove is provided on the blade shaft. On the contrary, the blade has a U-shaped protrusion.

(Function) As mentioned above, the U-shaped protrusion is formed on the blade axis of the rotary blade, so of the pair of front and rear holders, the U-shaped protrusion is fitted into the U-shaped part formed on the front holder. By being hooked into the grooves of the front and rear holders, the U-shaped protrusion will not escape from the U-shaped groove, and the rotary blade will not fall off even under the strong centrifugal force or gravitational force during operation. .

(Embodiment) To explain the main parts of the embodiment, which is considered to be the best of the present invention, with reference to the drawings, a pair of front and rear holders 3, 3 which are detachably attached to the notch groove 2 formed in the rotating body 1 or the rotating disk. Vfi! which clamps the blade shaft 7 of the prismatic rotary blade 6 to ゛! 4.4
A U-shaped groove 5 deeper than VL is formed in the front holder 3, and a U-shaped protrusion 8 that fits into the U-shaped 7#I5 is formed.
There is one that is structured around the blade axis. Therefore, when the blade shaft 7 of the rotary blade 6 is placed in the groove 4 of the front holder 3, the height of the blade becomes constant by simply fitting the U-shaped protrusion 8 into the U-shaped groove 5, and bonding is easy. In particular, since it is held in the notch 2 of the rotary barrel 1 by the groove 4 of the rear holder 3', the blade shaft 7 is held in the U-shaped shape regardless of whether or not the blade shaft 7 is accessed in the front and rear holders 3 and 3'. Since the protrusion 8 does not escape from the U-shaped 1l5 and can withstand strong centrifugal force and gravitation force during operation, the rotary blade 6 can be completely prevented from falling off.

(Effects of the Invention) As described above, the present invention has a U-shaped protrusion on the rotary blade shaft, thereby eliminating the possibility of the rotary blade falling off at all, and making it easy to arrange and fix the blade in the holder. It is extremely useful because it has a rotary blade that can be used in a wide range of fields.

This U-shaped protrusion can be configured not only as a single-layer or multi-layer rotary blade, but also as a prismatic rotary blade without a notch on the cutting edge, so it can be used for the production of flour.

4.

[Brief explanation of drawings]

Figure 1 is a perspective view of the rotary cylinder, Figure 2 is an enlarged side view of the holder to which the two-layered rotary blade is fixed, Figure 3 is an enlarged side view of the holder and the same rotary blade before it is fixed, and Figure 4 is Same plane episode, 5th
The figure is a side view of a single-layer rotary blade, and FIG. 6 is a side view of a prismatic rotary blade without a notch on the cutting edge. l...Rotating body, 2...Notch groove, 3...Front holder 3'...Rear holder, 4.4゛...V groove, 5.
...U-shaped groove, 6...Rotating blade, 7...Blade axis, 8...
The U-shaped protrusion and the arrow indicate the direction of rotation.

Claims (1)

[Claims] A rhombus-shaped prismatic rotary blade whose blade axis has a U-shaped protrusion that fits into a notch formed in a holder that is attached to a rotating body or rotary disk.