JPH0143175Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a slitter type crusher.

(Prior Art) As a rotary blade 1 for a slitter-type crusher, there is a rotary blade 1 in which a material retraction claw portion 3 is integrally provided on the outer periphery of a rotary blade body 2 and protrudes outward in the radial direction, as shown in FIG. The rotary blades 1 are fitted onto parallel rotating main shafts 4 via keys or splines, respectively, and are configured to crush materials by slidingly engaging the sides of the rotary blades 1 with each other. However, since the thickness of the material retraction claw part 3 of the conventional rotary blade 1 of this type was the same as the thickness of the rotary blade body 2 over the entire area, the material retraction claw part 3 of this kind of conventional rotary blade 1 had the same thickness as the rotary blade main body 2, so that the material retraction claw part 3 of this kind of conventional rotary blade 1 had the same thickness as the rotary blade main body 2; A large amount of material was bitten between the blade 1 and the crusher, and there was a risk that the crusher would stop due to overload.

Therefore, Japanese Patent Application Publication No. 47-7892,
As disclosed in Japanese Patent Publication No. 10302 and Japanese Patent Publication No. 56-17148, there is one in which one side of the material retraction claw in the thickness direction is inclined so that the side in the rotation direction of the material retraction claw is thinner. .

(Problems to be Solved by the Invention) Since the techniques described in the above-mentioned publications have an inclined surface only in the material drawing claw portion, overload still occurs as a slitter type crusher.

In other words, in a slitter-type crusher, a pair of rotary blade bodies are combined so that the sides of the rotary blade bodies are slidingly engaged with each other, and the slitting action is continuous in the rotational direction of the rotary blade bodies, so that no overload occurs at the slidingly engaged portion. This is because

(Means for Solving the Problems) The present invention solves the above problems, and is characterized by having a material retracting claw protruding outward in the radial direction on the outer periphery of the rotary blade body. and tilting one side in the thickness direction of the material retraction claw so that the side in the rotation direction of the material retraction claw is thinner,
In a slitter-type crusher in which a pair of the rotary blade bodies are combined with each other so that their side surfaces are in sliding contact with each other, a slitter-type crusher is provided in which a pair of rotary blade bodies are provided on the outer peripheral side surface of the rotary blade body, continuous with the inclined surface of the material retraction claw part, and mutually disposed in the thickness direction of the body. The point is that it forms an inclined surface located on the opposite side of the .

(Function) According to the present invention, when the pair of rotary blades 10 are driven to rotate with respect to each other in the direction of arrow a, the claw portions 17 scrape wood, telephone directories, and other input materials between the rotors 9,
The sliding engagement of the rotary blade body 15 crushes the material into slivers. At this time, since the claw portion 17 has an inclined surface 18, the material to be bitten between the claw portion 17 and the rotary blade 10 that slides and engages with the claw portion 17 is placed on the inclined surface 18.
The crusher can be smoothly released along the slope of the crusher, thereby minimizing the amount of material bitten into the crusher, and preventing the crusher from stopping due to overload.

In addition, in the sliding engagement of the rotary blade body 15, since the outer circumference of the main body has an inclined surface 20 that is continuous with the inclined surface 18 of the claw portion 7, even if the sliding engagement is made continuously. , the material escapes smoothly along the slope 20, thereby preventing overloading of the crusher.

(Example) Hereinafter, the present invention will be explained according to the illustrated embodiment. In FIGS. 2 and 3, 7 is a crusher casing, and inside the crushing chamber 8 there are provided a A rotor 9 is mounted with parallel axes.
The rotor 9 has rotary blades 10 and distance collars 11 alternately fitted onto a rotating main shaft 14, and is rotatable together with a key or spline 12.
The side surfaces of the slits are engaged with each other in a sliding engagement manner, and the input wood, telephone directory, and other materials are slittered at the sliding engagement portions, and those of a certain particle size are discharged through the screen 13. ing.

The rotary blade main body 15 of the rotary blade 10 has a disk shape with a mounting hole 16 in the center as shown in FIGS. They are integrally protruded outward in the radial direction so as to correspond to each other in the radial direction of the main body 15.
The edge of each material retraction claw portion 17 in the rotational direction is
As shown in FIG. 4, the center in the radial direction is formed in an arc shape so as to be recessed in the opposite side to the rotation direction, and the rotation direction side of one side surface in the thickness direction of the material drawing claw part 17 is a fourth
As shown in the figures to FIG.
The inclined surfaces 18 of the pair of claws 17 that correspond to each other in the radial direction are on opposite sides in the thickness direction of the claws 17, so that due to the weight balance and inclination of the rotary blade 10 in the thickness direction, The applied thrust force is balanced, and the material to be crushed is evenly distributed throughout.

Furthermore, as shown in FIG. 4, not only the claw portion 17 but also the outer peripheral side surface of the rotary blade main body 15 are inclined so that the outer end side in the radial direction becomes gradually thinner.
, a pair of inclined surfaces 20 spanning each half in the circumferential direction.
are formed so as to be continuous with the inclined surface 18 of the claw portion 17 and to be located on opposite sides of the main body 15 in the thickness direction.

In addition, in the embodiment described above, the rotary blade body 15 has the claw portion 1.
However, the number of protruding and inclined claw parts 17 is not limited to this, and three or more claw parts 17 may be provided, and three or more claw parts 17 may be provided on the main body 15. When an odd number of rotary blades are provided, it is difficult to balance the weight in the thickness direction for each rotary blade 10, but it is sufficient to balance the weight of the rotor 9 as a whole.

(Effects of the invention) As described above, according to the invention, one side surface in the thickness direction of the material retraction claw is inclined such that the rotation direction side of the material retraction claw is thinner. The crushed material that is bitten by the rotary blade that slides and meshes with this can be smoothly released along the slope, so that the amount of biting of the material is minimized,
This prevents the crusher from stopping due to overload. Moreover, as mentioned above, since the material drawing claw part is thin on the rotation direction side, the compressive force of the material drawing claw part against the material can be concentrated on this thin part, and a strong crushing force can be exerted, and the compression reaction against the rotating blade can be In addition to the basic effect of being able to reduce the force and preventing the crusher from stopping due to overload, there are the following specific effects.

Since the outer peripheral side surface of the rotary blade body is formed with a sloped surface that is continuous with the sloped surface of the material retraction claw, even if the side surfaces of the main body continuously slide and engage with each other to perform a slitting action. The material biting into the sliding engagement part can be released along the inclined surface, thereby preventing overload.

[Brief explanation of drawings]

Fig. 1 is a plan sectional view showing a conventional example, Fig. 2 is a sectional view of a crusher showing an embodiment of the present invention, Fig. 3 is an external plan view of the rotor, and Fig. 4 is a front view of the rotary blade. Figure 5 is a cross-sectional view taken along line A-A in Figure 4, Figure 6 is a cross-sectional view taken along line B-B in Figure 4, and Figure 7 is a cross-sectional view taken along line C--
It is a view taken along the line C. 10...Rotary blade, 15...Rotary blade body, 17...
...Material retraction claw portion, 18... Slanted surface, 20... Slanted surface.

Claims (1)

[Claims for Utility Model Registration] The rotary blade body has a material retracting claw protruding outward in the radial direction on the outer periphery thereof, and one side in the thickness direction of the material retracting claw is connected to the rotation of the material retracting claw. In a slitter-type crusher in which the rotary blade bodies are inclined so that the thickness is thinner on the opposite side, and the pair of the rotary blade bodies are combined with each other so that the side surfaces are slidably engaged with each other, A slitter-type crusher characterized by forming slopes that are continuous with the slope and are located on opposite sides in the thickness direction of the main body.