JP2002045721A - Blade body for rotary crusher - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To crush hard materials smoothly. SOLUTION: A cutting blade tip 2 made of cemented carbide is fixed to each mounting seat 1a of a blade body 1 with a countersunk screw 3 to assemble a blade body A. The blade body A is attached to the rotary drum with bolts or the like using the mounting holes 1b in a state where one corner portion is projected from the outer peripheral surface of the rotary drum as in the conventional case. In this mounting state, the outer shape of the blade body A is formed, and the ridgeline of the cutting blade tip 2 on the rotating front side becomes a cutting blade that actually crushes the processing object. Since the cutting blade tip 2 has a high hardness, unlike a conventional blade body made of steel such as SKD material, the cutting blade chip 2 is hardly worn or worn, and crushes industrial waste well over a long period of time. Can be. In the case where the sharpness is reduced, the cutting edge tip 2 is removed, and the cutting edge tip 2 is turned 180 degrees or turned upside down and re-attached, and another ridge line is used as a cutting edge.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade for a rotary crusher, for example, which is mounted on a rotary drum of a single-shaft crusher to form a rotary blade and cooperates with a fixed blade to crush a processed material. It is about.

[0002]

2. Description of the Related Art As a single-shaft crusher, a large number of square flat blades each having a ridgeline as a cutting edge are detachably mounted on the outer periphery of a rotating drum by projecting one corner portion from the outer peripheral surface of the rotating drum. It is known that a rotary blade is configured by attaching the rotary blade, and the rotary blade is rotated to cooperate with a fixed blade to crush a processed material such as industrial waste.

[0003] By the way, industrial wastes which are presently a social problem include home appliances such as refrigerators, washing machines, air conditioners and televisions, which use high hardness materials, plastic products such as soft materials, paper and yarn. Various miscellaneous items are included. Therefore, the blade which is used for crushing industrial waste and the like must be strong and must be able to crush any object without fail.

[0004]

However, since the blade of the above-mentioned conventional single-shaft crusher is made of steel such as SKD or SKH, a harder material is contained in the processed material. In this case, for example, as shown in FIG. 15, wear of the corner portion 33 protruding to the outer peripheral side of the square surface 32 of the blade body 31 particularly directed to the rotation direction side of the rotary blade and the cutting edge e intersecting with the corner portion 33 There is a problem that the V is so severe that the life of the blade body 31 is expended early and, in some cases, it must be replaced before another corner portion is used.

[0005] In addition, especially in the case of a rotary blade, the number of blades is larger than that of a fixed blade. Therefore, even if the blade is replaced when wear occurs, much time is required for replacement work and the like. This results in a heavy burden on the person. further,
When the blades of these rotary blades and fixed blades wear, the clearance between the cutting blades of the blades of the rotary blade and the blades of the fixed blade becomes large, and the workpiece is reliably crushed. Can not be done.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has as its object to provide a blade for a rotary crusher which is strong and hard to wear and can crush any object without fail. Aim. It is another object of the present invention to provide a blade for a rotary crusher that can be used for many months by changing the mounting posture of the cutting edge tip.

[0007]

In order to achieve at least one of the above-mentioned objects, the present invention is directed to a rectangular flat blade that is detachably attached to a rotary crusher. A cutting blade tip having a cutting edge higher in hardness than the blade body is detachably attached to a corner of the body.

In this means, when the cutting edge is worn, the cutting edge tip is replaced with another cutting edge tip, or another cutting edge is used by changing the mounting posture of the cutting edge tip with respect to the blade body. I do. Other cutting blades can be used by changing the mounting posture of the blade body with respect to the rotary drum as in the related art. Since the hardness of the cutting edge tip is high, the hard material can be reliably crushed for a long period of time.

In the blade body for a rotary crusher according to claim 1, the cutting edge tip is made of an ultra-high alloy, a high speed tool steel,
It is preferably formed from one of ceramics and cermet (claim 2). In this configuration, since the cutting edge tip has a high hardness, the hard material in the processing object can be more reliably and smoothly crushed for a long period of time.

In the blade body for a rotary crusher according to claim 1 or 2, the cutting blade tip is seated on each mounting seat formed on the front and back of a corner portion of a rectangular blade body. Then, it can be configured to be detachably attached by the clamp means (claim 3). In this configuration,
Since the shapes of the blade body and the cutting tip are simplified, manufacture and assembly are facilitated, which is advantageous in terms of cost.

[0011] In the blade body for a rotary crusher according to claim 1 or 2, the blade body is provided with four square shapes at each side of a square center portion where a mounting hole is formed. The mounting seat is constituted by a pair of cruciform halves provided integrally radially, and the cutting blade tip is mounted on a square column-shaped tip body mounted on the inner corners of the mounting seats adjacent to each other of the blade body.
It is possible to adopt a configuration in which a mounting arm that is sandwiched between the mounting seats of the pair of halves facing each other and that is removably mounted by the clamp means is provided integrally (claim 4).
In this configuration, the tip body of the high-hardness cutting edge tip occupies the entire corner of the blade body, so that a stronger blade body can be obtained.

In the blade body for a rotary crusher according to claim 4, a clamp hole is formed in a mounting arm of the cutting blade tip, and a projection fitted to the clamp hole is provided in a mounting seat of the blade body. (Claim 5). In this configuration, the projection is included in the clamping means to enhance the connection between the blade body and the cutting tip.

[0013] In the blade body for a rotary crusher according to the fourth or fifth aspect, it is preferable that the thickness of the center portion of the half body is larger than the thickness of the mounting seat (claim 6). In this configuration, when the thickness of the center portion of the half body is equal to the thickness of the mounting seat, the cavity formed between the center portions of the half body due to the insertion of the mounting arm with respect to the mounting seat is reduced or reduced. Becomes possible.

[0014]

Embodiments of the present invention will be described with reference to the accompanying drawings. 1 and 2 show a first embodiment of a blade for a rotary crusher according to the present invention. The blade body A has a square flat plate shape as a whole, and is composed of one blade body 1, eight cutting blade tips 2 and eight countersunk screws 3 as clamping means.

The blade body 1 has a square front shape.
It has a square mounting seat 1a on the front and back of the corner, and a circular mounting hole 1b at the center. A screw hole (clamp hole) 1c is formed at the center of the mounting seat 1a.

The cutting blade tip 2 has a particle size of 0.5 to 10 μm.
Is formed into a square shape by a cemented carbide obtained by mixing and sintering a binder such as Co so as to have a binder phase amount of 5 to 30 wt%. It has a through hole (clamp hole) 2c, and its hardness is 80-95.
It is considered as the range of HRA. The material of the cutting edge chip 2 can be high-speed tool steel, ceramics, or cermet, in addition to the cemented carbide.

The size of the cutting tip 2 is the same as the recessed shape of the mounting seat 1a of the blade body 1. Therefore, when the cutting blade tip 2 is seated on the mounting seat 1a of the blade body 1,
The whole shape becomes a square plate shape.

When assembling the blade body A, the cutting blade tip 2 is correctly applied to each mounting seat 1a of the blade main body 1, and the countersunk screw 3 is screwed from the through hole 2c of the cutting blade tip 2 to the screw hole 1c of the mounting seat 1a. Wear and do. This blade body A is usually attached to the rotary drum with bolts or the like using the mounting holes 1b in a state where one corner portion is protruded in a triangular shape from the outer peripheral surface of the rotary drum (not shown) as in the conventional case. use. In this mounting state, the outer shape of the blade body A is formed, and the ridge line of the cutting blade tip 2 on the rotating front side becomes the cutting blade e for actually crushing the processing object.

As described above, the blade body A is attached to the rotary drum to form a rotary blade, and the workpiece is crushed by the cutting blade e in cooperation with the fixed blade. Due to its high hardness, unlike conventional blades made of steel materials such as SKD materials, it is less likely to be worn or deformed, and crushes treated materials such as industrial waste well over a long period of time. Can be.

In the case where the sharpness deteriorates due to long-term use, the cutting screw 3 is loosened to remove the cutting blade tip 2, and the cutting blade tip 2 is turned 180 degrees or turned upside down. Reattach and use the other ridge as cutting edge e. It is also possible to turn the cutting blade A itself without changing the cutting blade tip 2 or use another cutting blade tip 2 with its front and back reversed.

In the case of the cutting blade A, since the shapes of the blade body 1 and the cutting tip 2 are the simplest, it is advantageous in terms of manufacturing, assembling, etc., and the cost can be reduced.

FIGS. 3 to 6 show a second embodiment of a blade for a rotary crusher according to the present invention. This blade body B,
One blade body 5 and four cutting tips 6 are provided.

The blade body 5 is composed of two halves 8,9. The half body 8 includes four square mounting seats 8a each having a through hole (clamp hole) 8c formed at the center on each side of a square central portion 8d having a circular mounting hole 8b formed at the center. It is provided radially and integrally. The other half 9 has four square squares in which a screw hole (clamp hole) 9c is formed in the center at each side of a square center 9d in which a circular mounting hole 9b is formed in the center. The mounting seat 9a is integrally provided radially (crosswise).

The outer shapes of the halves 8, 9 are the same, and the thinner mounting seats 8 are provided on the central portions 8d, 9d having a large thickness.
a, 9a are continuously provided with one side being flush.

The cutting edge chip 6 is provided integrally with a mounting arm 6b having a circular through hole (clamp hole) 6c formed at the center at the center of one surface of a columnar chip body 6a having a square cross section. Become. The material of the cutting edge tip 6 is the same as that of the cutting edge tip 2 described above.

The tip body 6a of the cutting edge tip 6 is provided with mounting seats 8a, 8a, 9a, 9a of the halves 8, 9 adjacent to each other.
And the mounting arm 6b
Are the same as the planar shape of the mounting seats 8a, 9a of the halves 8, 9, and the chip body 6a is attached to the mounting seats 8a, 8 of the halves 8, 9.
a, 9a, 9a, are fitted into the inner corners n, the mounting arm 6b is sandwiched between the mounting seats 8a, 9a, and the four cutting blade tips 6 are assembled to the blade body 5 to form a flat plate having a square overall shape. It has become like a state.

To assemble the blade body B, four cutting blade tips 6 are assembled to the blade body body 5 as described above, and then, for example, a countersunk screw 3 (see FIG. 2) is cut into the through hole 8c of the half body 8. Blade tip 6
Of the half body 9 and screwed into the through hole 6c. This blade body B is also used by being attached to a rotating body in the same manner as the blade body A, but also in this case, the outer shape of the blade body B is formed,
In addition, the ridge line of the cutting edge tip 6 on the rotation front side becomes the actual cutting edge e.

In this blade body B, the same effect as that of the blade body A can be expected. The reattachment of the cutting blade tip 6 can be performed in accordance with the blade body A (however, it is not possible to replace only one of the cutting blade tips 6 by turning). Note that the two through holes 8c of the half body 8 are screw holes,
The two screw holes 9c of the other half 9 are made through holes to form the half 8,
9 can have the same structure.

FIGS. 7 to 10 show a third embodiment of a blade for a rotary crusher according to the present invention. This blade C
Has one blade body 11 and four cutting blade tips 6.

The blade body 11 is composed of two halves 13. The half body 13 includes four square mounting seats 13a each having a tapered hole (clamp hole) 13c formed at the center on each side of a square central portion 13d having a circular mounting hole 13b formed at the center. It is provided radially and integrally.
The thickness of the central portion 13d is made larger than the thickness of the mounting seat 13a, and the mounting seat 13a is continuously provided beside the central portion 13a with one surface (the surface on the large diameter side of the tapered hole 13c) flush. ing.

The structure of the cutting blade tip 6 and the relationship with the halves 13, 13 of the blade body 11 are the same as those of the blade B, and
The cutting blade tips 6 are attached to the mounting seats 13a,
When assembled to the inner corner n of 13a, the overall shape is a square flat plate.

The blade body C is assembled by assembling the four cutting blade tips 6 into the blade body 11 as shown in FIG. 7 and the like.
(c) By inserting a clamp means (not shown) such as a bolt through the tapered hole 13c and directly fixing the clamp means to a screw hole or the like of the rotating drum, assembly and mounting to the rotating drum are performed at the same time. The mounting hole 13 of the blade body 11
b is also used for attaching the blade body C to the rotating drum.

In the case of the blade body C, the same effects as those of the blade bodies A and B can be expected, and the mounting strength to the rotating drum can be enhanced. Since the two halves 13 constituting the blade body 11 are the same, the cost can be reduced.

FIGS. 11 to 14 show a fourth embodiment of a blade for a rotary crusher according to the present invention. This blade D
Is provided with one blade body 15 and four cutting blade tips 16.

The blade body 15 is constituted by two halves 18. The half body 18 is provided with four square mounting seats 18a radially integrally on each side of a square central portion 18d in which a circular mounting hole 18b is formed at the center position, and opposes each other among the four mounting seats 18a. A tapered projection 13f is provided at the center of the two mounting seats 18a. Also in this case, a mounting seat 18a thinner than the central portion 18d is continuously provided on the opposite side of the projection 18f to the center portion 18d having a large thickness.

The cutting blade tip 16 is formed by integrally providing a mounting arm 16b having a tapered hole (clamp hole) 16c at the center at the center of one surface of a columnar chip body 16a having a square cross section. The material of the cutting edge tip 16 is the same as that of the cutting edge tips 2 and 6 described above.

The tip body 16a of the cutting edge tip 16 has the same shape as the inner corner n of the mounting seats 18a, 18a adjacent to each other on the half body 18, and the mounting arm 16b is attached to the mounting seat 18a of the half body 18. The chip body 16a is fitted into the inner corner n of the mounting seats 18a, 18a of the half body 18, and the mounting arms 16b are formed similarly to the blade bodies B, C.
Between the mounting seats 18a, 18a, and the blade body 15
When the four cutting edge tips 16 are assembled to the, the overall shape is a square flat plate. When assembling, the projection 18f of the mounting seat 18a is fitted into the tapered hole 16c of the mounting arm 16b.

To assemble the blade body D, four cutting blade tips 16 are assembled to the blade body body 15 as described above, and then clamping means such as bolts (shown in the drawings) are attached to the mounting holes 18b, 18b of the blade body body 15. ) Is inserted and the clamp means is fixed to a screw hole or the like of the rotating drum, so that assembly and mounting to the rotating drum can be performed simultaneously. In this case, the projection 18f is fitted into the tapered hole 16c of the cutting blade tip 16, and the blade body 1
Since the blade 5 and the cutting blade tip 16 are integrated, they are included in the clamping means.

The same effect as the blades A, B, and C can be expected with this blade D. Moreover, unlike the blade bodies A, B, and C, it is not possible to remove only one cutting blade tip 16 from the blade body 15, but the assembly structure is simple and no special clamping means is required. Is easy.

The blades B, C, and D halves 8, 9, 13,
13, 18, the central part 8 d, 9 d, 13 d, 13 of 18
Although d, 18d and 18d are in contact with each other in the assembled state of the blade body, it is also possible to form a cavity in that part without contacting. In addition, the blade body 1,
As the clamping means for integrally fixing the cutting edge chips 2, 6, and 16 to 5, 11, and 15, besides general screws, well-known hole clamping, lever lock, cam lock, retraction pin clamp, and the like are used. Can be. It goes without saying that the clamp holes such as the screw holes and the through holes are changed in accordance with the type of the predetermined clamping means.

The blade body 1, 5, 11, 15 is made of steel, but may be made of another material. The blades A, B, C, and D are generally mounted on the rotating drum at a clearance angle of the cutting edge of 0 to 15 degrees and a rake angle of 0 to 10 degrees.

[0042]

As described above, according to the first aspect of the present invention, the cutting edge is hardly worn, and when worn, the cutting edge tip can be replaced with another cutting edge tip or the blade body can be replaced. The mounting orientation of the cutting edge tip with respect to the main body can be changed,
It is possible to obtain a blade capable of crushing a hard material over a long period of time.

With the blade for the rotary crusher according to the second aspect, industrial waste and the like can be crushed more reliably and smoothly over a long period of time.

In the case of the blade for a rotary crusher according to the third aspect, since the shapes of the blade body and the cutting edge tip are the simplest, manufacture and assembly are easy, and the cost is reduced. be able to. According to the blade for a rotary crusher according to the fourth aspect, a high-strength blade in which a high-hardness cutting edge tip occupies the entire corner portion of the blade can be obtained.

According to the construction of the blade body for the rotary crusher according to the fifth aspect, the assembling of the cutting blade tip to the blade body and the mounting of the blade body to the rotating body become easy. In the blade body configuration for the rotary crusher according to the sixth aspect, a blade body without a hollow inside can be obtained.

[Brief description of the drawings]

FIG. 1 is an external view showing a first embodiment of a blade for a rotary crusher according to the present invention.

FIG. 2 is a cross-sectional view of the blade body of FIG.

FIG. 3 is a plan view showing a second embodiment of a blade for a rotary crusher according to the present invention.

FIG. 4 is a cross-sectional view taken along a line (IV-IV) in FIG. 3;

FIG. 5 is a view of a blade body of the blade body of FIG. 3;

FIG. 6 is an exploded external view of the blade body of FIG.

FIG. 7 is a plan view showing a blade body for a rotary crusher according to a third embodiment of the present invention.

8 is a sectional view of a portion (VIII-VIII) in FIG. 7;

FIG. 9 is a view of a blade body of the blade body of FIG. 7;

FIG. 10 is an exploded external view of the blade body of FIG. 7;

FIG. 11 shows a fourth example of a blade body for a rotary crusher according to the present invention.
It is a top view which shows embodiment.

FIG. 12 is a sectional view of a portion (XII-XII) in FIG. 11;

FIG. 13 is a view of a blade body of the blade body of FIG. 11;

FIG. 14 is an exploded external view of the blade body of FIG.

FIG. 15 is an external view of a conventional blade body.

[Explanation of symbols]

A, B, C, D Blade 1,5,1
1,15 Blade body 1a, 8a, 9a, 13a, 18a Mounting seats 1b, 8b, 9b, 13b, 18b Mounting holes 1c, 9c Screw holes (clamp holes) 2, 6, 16
Cutting blade tip 2c, 6c, 8c Through hole (clamp hole) 3 Countersunk screw (clamp means) 6a, 16a Tip body 6b, 16b
Mounting arm 8, 9, 13, 18 Half body 8d, 9d, 13d, 18d Center part 13c, 16c Tapered hole (clamp hole) 18f Projection e Cutting edge n Inner corner

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Toru Fukutomi 1528 Nakashinden, Yokoi, Kobe-cho, Anpachi-gun, Gifu Prefecture F-term in Mitsubishi Materials Corporation Gifu Works (reference) 4D065 CA16 CB10 CC01 DD04 EB11 EB14 EB20 EC09

Claims (6)

[Claims] 1. A cutting blade tip having a rectangular flat plate shape detachably attached to a rotary crusher and having a cutting edge having a hardness higher than that of the blade body at a corner portion of the blade body. A blade for a rotary crusher, wherein the blade is detachably mounted. 2. The rotary crusher according to claim 1, wherein the cutting edge tip is formed of one of an ultra-high alloy, a high-speed tool steel, a ceramic, and a cermet. Blade body. 3. The cutting blade tip is seated on each mounting seat formed on the front and back of a corner portion of a rectangular blade body, and is detachably mounted by a clamp means. A blade for a rotary crusher according to claim 1. 4. The blade body comprises a pair of cruciform halves in which four square mounting seats are provided radially and integrally on each side of a central portion of the square in which mounting holes are formed. The cutting blade tip is clamped between a pair of half-faced mounting seats of a pair of halves in a rectangular column-shaped tip body mounted on inner corners of the mounting seats adjacent to each other on the blade body. The blade body for a rotary crusher according to claim 1 or 2, wherein a mounting arm detachably mounted by means is provided integrally. 5. The rotation according to claim 4, wherein a clamp hole is formed in a mounting arm of the cutting blade tip, and a projection fitted into the clamp hole is provided in a mounting seat of the blade body. Blades for crushers. 6. The blade for a rotary crusher according to claim 4, wherein a thickness of a center portion of the half body is larger than a thickness of the mounting seat.