JPH08323233A - Rotary blade of biaxial shearing type crusher - Google Patents

Abstract

PURPOSE: To make replaceable even the edge part of a piece cutter, which is vulnerable to abrasion and breakage, in the rotary blade of a biaxial shearing type crusher and to regenerate the rotary blade. CONSTITUTION: This rotary blade of a biaxial shearing type crusher is divided into a base blade part and an edge part which surrounds the base blade part, the edge part is divided in the circumferential direction to be formed by attachable/detachable piece cutters 7. In the piece cutter 7, a plane edge piece 13 which forms the edge part of the piece cutter 7 is set in advance attachably/ detachably to a plane edge seat 13a on the piece cutter 7 side to regenerate the piece cutter, or the rotary blade.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is an improvement of a blade tip exchange cutter (hereinafter referred to as a "peace cutter") for a rotary blade of a biaxial shearing type crusher for continuously crushing various solid processed materials by a shearing action. More specifically, the rotary blade mounted on the rotary shaft pivotally supported by the casing is divided into a base blade portion and a blade tip portion so that wear and the like occur only on the blade tip portion. The present invention relates to a rotary blade of a biaxial shearing crusher that is provided with an edge piece for regeneration in advance so as to facilitate the regeneration of the edge portion of a piece cutter that is easily damaged.

[0002]

2. Description of the Related Art Conventionally, there has been known a shearing type crusher capable of effectively utilizing a shearing force to crush all solid processed materials such as plastic, wood chips, paper, metal, rubber, fiber and leather. (See, for example, Japanese Utility Model Publication No. 55-41309).

In this type of shearing crusher (hereinafter referred to as "biaxial shearing crusher"), two shafts are provided with bearings parallel to each other in a casing having an inlet and an outlet for the processed material. They are rotatably supported in opposite directions via a shaft, and disk-shaped rotary blades which are an integral body are alternately arranged on each shaft with a spacer interposed therebetween. The rotary blades arranged alternately are
The side surfaces on one side are in close contact with each other, and the outer peripheral surfaces of the rotary blade partially overlap each other to form a so-called slit cutter. Further, a claw for drawing in the processed material is provided on the outer periphery of the rotary blade so as to partially project. When the biaxial shearing type crusher is used, a pair of rotary blades facing each other are rotationally driven inward toward each other, and a target article to be treated is charged through a charging port in the upper part of the casing. Then, the object to be treated is drawn into the gap between the rotary blades by the claws of the rotary blades facing each other, crushed by the shearing action of the slit cutter, and dropped from the discharge port.

[0004]

In this type of biaxial shearing type crusher, the rotary blade is most likely to be worn out functionally, and it is necessary to replace the rotary blade with a new one after a certain period of use. . Depending on the frequency of use and processed material, it may have to be replaced within a fairly short period of time.

However, since the disk-shaped rotary blade is an integral body, when replacing it, it is necessary to separate the casing and the bearing and then remove the rotary blade together with the spacer from the shaft, which is very complicated. It will be a laborious task. Moreover, since such a biaxial shearing type crusher is equipped with a considerable number of rotary blades, it requires a great deal of labor to replace it, and maintenance is not easy.

Therefore, the applicant of the present invention has already proposed an invention in which the rotary blade is composed of a base blade portion and a portion of the blade edge portion surrounding the rotary blade portion so that only the worn blade edge portion can be replaced. In this proposal, only the piece cutter can be easily replaced, but further improvement was required in terms of convenience and economy of the piece cutter in the rotary blade of the biaxial shearing crusher, and effective use of resources. . That is, even among the piece cutters, the edge parts are most likely to be worn or chipped, but even if only the edge parts are worn or chipped, the entire piece cutter must be replaced each time, and scraps of the piece cutters will be reused. It was disposed of immediately after use. This does not lead to effective use of resources and is completely uneconomical.

Therefore, an object of the present invention is to provide a rotary blade of a biaxial shearing crusher in which only the edge portion of the piece cutter, which is easily worn out, can be replaced so that the entire piece cutter can be regenerated. is there.

[0008]

To achieve the above object, the present invention relates to a rotary blade mounted on a shaft axially supported by a casing of a biaxial shearing type crusher, and the rotary blade is fitted to the shaft. Is divided into a base blade portion and a blade tip portion surrounding the blade tip portion, and the blade tip portion is circumferentially divided to form a plurality of piece cutters. Both are rotary blades of a biaxial shearing crusher, characterized in that an edge piece for regenerating an edge portion of the piece cutter is detachably attached to a predetermined position of the piece cutter.

[0009]

In the above construction, since the base blade portion is surrounded by the blade tip portion so as not to be exposed on the surface, it is protected from abrasion when crushing the processed material, and is worn by using the blade edge portion (circumferential direction). It consists of a piece cutter divided into several pieces). In addition, in this case, since the edge piece of the piece cutter which is easily worn or damaged is detachably provided in advance, only the worn or damaged edge piece needs to be replaced. After a new edge piece is attached to the piece cutter and regenerated, if the piece cutter is fixed to the predetermined part of the base blade again, it becomes possible to regenerate and repeatedly use the worn or broken edge part. .

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

First, the structure of the entire biaxial shearing type crusher equipped with a rotary blade according to the present invention will be described. FIG. 1 is a front sectional view of the entire biaxial shearing crusher.

In the figure, a main shaft 1 and a slave shaft 2, which are two rotary shafts having a rectangular cross section, are arranged in parallel at regular intervals, and both shaft ends of the shafts 1 and 2 are bearings (shown in the figure). It is rotatably supported by the box-shaped casing 3 via (not shown).
The main shaft 1 is connected to a drive shaft of an electric motor (not shown). When the main shaft 1 is rotated counterclockwise, the slave shaft 2 is rotated in the right direction opposite thereto, that is, the two shafts 1 and 2 are configured to rotate inward (in the direction of the arrow in the figure) to face each other. There is.

On the two parallel axes 1 and 2, disc-shaped rotary blades C are alternately arranged with a spacer 9 interposed therebetween.
The side faces are fitted and attached in a state of closely overlapping each other. On the outer circumference of each rotary blade C, a plurality of claws 6a for drawing in and cutting the processed material are provided at regular intervals on the circumference. The claw 6a has a function of pulling the processing object at the time of rotation of the rotary blade C, and at the same time, has a function of approaching the outer peripheral surface of the opposing spacer 9 so as to be slidably contacted and breaking the processing object to a certain length by a shearing action. . The side surfaces of the pair of rotary blades C facing each other are always closely in contact with each other to form a slit cutter, and the processed material introduced from above the casing 3 is drawn in by the claw 6a and is sheared by the slit cutter. It is crushed and discharged downward. A scraper 4 is provided so as to project from the side of the box-shaped casing 3 at a position facing the rotary blade C and the spacer 9, and the tips of the scraper 4 are provided on the circumferential surfaces of the rotary blade C (tip of the claw 6a) and the spacer 9, respectively. It is formed in a semi-circular shape so as to be close to each other. The scraper 4 has a function of scraping off the processing object sandwiched between the rotary blades C.

By the way, in the case of the rotary blade C having the above-mentioned function, the blade tip portion 6 on the outer periphery and particularly the portion of the claw 6a are easily worn, and it is necessary to replace it with a new one after using it for a certain period.
As described above, if the rotary blade C is a single piece, it cannot be easily replaced.

Therefore, the rotary blade C according to the present invention is shown in FIG.
(Exploded perspective view). That is, FIG.
As shown in, the rotary blade C is divided and formed into a base blade portion 5 fitted to the shafts 1 and 2 having a rectangular cross section and a blade tip portion 6 surrounding the base blade portion 5. Moreover, the cutting edge portion 6 is formed by joining and joining a plurality of substantially hook-shaped piece cutters 6 which are divided in the circumferential direction on the circumference, and the piece cutter 6 and the base blade portion 5 are formed as described later. It can be attached and detached (attached and detached).

A joint boundary surface 1 between the cutting edge portion 6 and the base blade portion 5
0 is surrounded by the piece cutter 6A so that it is not exposed to the surface, that is, the entire outer periphery of the base blade portion 5 is not exposed to the surface. This allows
The wear occurs only in the cutting edge portion 6 and not in the base blade portion 5. Thus, the part of the base blade part 5 is protected by the cutting edge part 6 and is not worn, so that replacement is only required by the cutting edge part 6. A stepped tooth portion 10a is formed on the outer periphery of the base blade portion 5 so as to be meshed with each piece cutter 7. The tooth portion 10a ensures that the axial rotational force can be transmitted to the blade edge portion 6. In addition, the tooth portion 10a bears the reaction force at the time of cutting.

A bolt hole 8 is formed in each piece cutter 7, and a bolt is inserted into the bolt hole 8 and screwed into a female screw hole 8a formed on the side of the base blade portion 5, whereby each piece cutter 7 is cut. 7 is integrated with the outer periphery of the base blade portion 5 so as to be able to come into contact with and separate from (attach and detach), so that one rotary blade C is formed.

Further, in the present invention, in addition to the above-mentioned structure, an edge piece which is preliminarily processed into a regenerated shape for reproduction is provided on an edge portion (a claw edge portion, a plane edge portion and a side edge portion) of the piece cutter 7 which is easily worn and broken. Is attached to a predetermined position of the piece cutter 7.

FIG. 3 is an exploded perspective view showing a claw edge seat of a piece cutter of a rotary blade according to the present invention and an edge piece thereof, and FIG. 4 is an exploded perspective view showing a flat edge seat of the piece cutter and an edge piece thereof. FIG. 5 is an exploded perspective view showing a side edge seat of the piece cutter and an edge piece thereof.

As shown in FIG. 3, a claw edge seat 11a formed on the claw edge portion of the piece cutter 7 is detachably mounted with a claw edge piece 11 which has been preliminarily processed into a regenerated shape by means of bolts and adhesives. ing. That is, the bolt is inserted into the bolt hole 12 of the claw edge piece 11 and screwed into the female screw hole 12a of the piece cutter body so that the claw edge piece 11 is attached to the position of the claw edge seat 11a and integrated with the body of the piece cutter 7. Has become.

Further, as shown in FIG. 4, the piece cutter 7
The planar edge piece 13 is detachably attached to the planar edge seat 13a in the shape of a rectangular groove formed on the planar portion of the same as above. 8c is a bolt hole provided in the flat edge piece 13.

Further, as shown in FIG. 5, the piece cutter 7
The side edge piece 14 is detachably attached to the side edge seat 14a formed on the side surface portion of the same as the above.
Reference numeral 15 is a bolt hole provided on the side edge piece 14 side, and 15a is a female screw hole provided on the side of the piece cutter 7 and engaged therewith.

[0023] It is preferable that all of the claw edge portion, the plane edge portion and the side surface edge portion are provided with removable edge pieces in a detachable manner. For example, the claw edge portion which is expected to be most easily worn or chipped is recommended. It is also possible to provide an edge piece for reproduction only for.

When replacing the cutting edge portion 6 in the above structure, the bolt for fastening is removed to remove the piece cutter 7 from the base blade portion 5, and the edge piece of the worn or missing piece cutter 7 is removed to replace it. After replacing with the edge piece, if the piece cutter is fixed to the predetermined portion of the base blade portion again, it becomes possible to regenerate and repeatedly use the worn and broken blade edge portion.

[0025]

The rotary blade according to the present invention described above is
Since the base blade portion is surrounded by the blade tip portion so as not to be exposed on the surface, it is protected from abrasion when the processed material is crushed, and only the blade tip portion is worn by use. Moreover, in this case, since edge pieces of the piece cutter (preferably all of claw edges, flat edges, and side edge portions) that are easily worn or chipped are preliminarily detachably provided, edge pieces that are worn or chipped It is possible to re-use the worn / damaged blade edge as many times as necessary just by replacing it, and to use it repeatedly.

As a result, of the worn and missing piece cutters, the number of pieces that must be truly scrapped (scrap rate) is extremely small, which contributes to the effective use of resources, resulting in biaxial shearing crushing. The running cost of the entire apparatus can be reduced, and a great economic effect can be obtained.

[Brief description of drawings]

FIG. 1 is a sectional view of the front of a biaxial shearing type crusher to which the present invention is applied.

FIG. 2 is an exploded perspective view of a rotary blade.

FIG. 3 is an exploded perspective view showing a claw edge seat of a piece cutter of a rotary blade and an edge piece thereof according to the present invention.

FIG. 4 is an exploded perspective view showing a flat edge seat and a piece of the edge of the piece cutter of the rotary blade according to the present invention.

FIG. 5 is an exploded perspective view showing a side edge seat of a piece cutter of a rotary blade and an edge piece thereof according to the present invention.

[Explanation of symbols]

 1 ... (Main) Axis 2 ... (Slave) Axis 5 ... Base Blade Part 6 ... Blade Edge Part 7 ... Piece Cutter 11 ... Claw Edge Piece 11a ... Claw Edge Seat 13 ... Plane Edge Piece 13a ... Plane Edge Seat 15 ... Side Edge Piece 15a ... Side edge seat C ... Rotating blade

Claims (1)

[Claims] 1. A rotary blade mounted on a shaft axially supported by a casing of a biaxial shearing crusher, the rotary blade being divided into a base blade portion fitted to the shaft and a blade tip portion surrounding the rotary blade portion. Formed by dividing the blade edge portion in the circumferential direction with a plurality of piece cutters, the piece cutter is configured to be contactable with and separable from the base blade, and an edge piece for reproducing an edge portion of the piece cutter is formed. A rotary blade for a biaxial shearing type crusher, which is detachably attached to a predetermined position of the piece cutter.