JP2000033281A - Slitter type crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slitter type crusher which can finely crush a material to be crushed, into small strips. SOLUTION: In a guiding way 10 through which a material to be crushed is charged, the rotating-shafts A of two rotating-shafts A and B on which rotating-blades 20 of a large diameter are installed at fixed intervals is located diagonally below the other rotating-shaft B. The comb-teeth of a scraper are inserted nearly horizontally between the inner side faces of the plural rotating blades 20 on the surface of the rotating-shaft A, so that edges 22 of the rotating blades 20 on the rotating-shaft B can pass through close to the upper side faces of the comb-teeth of the scraper, and so that the edges 22 of the rotating blades 20 on the rotating-shaft A can pass through between the comb-teeth close to the root-part of the scrapers 40. A rotation means is connected to the rotating shafts A and B so that the two rotating-shafts A and B will rotate inwardly in opposite directions and as viewed from upside so that the rotating-shaft A will rotate faster than the rotating-shaft B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter-type crusher (hereinafter referred to as a crusher) for crushing industrial waste plastic waste into small pieces.

[0002]

2. Description of the Related Art A crusher as shown in FIG. 5 is known as the crusher. In this crushing machine, two rotating shafts A and B are provided side by side in parallel at a predetermined interval in a vertically oriented guide path 10 through which an object to be crushed such as plastic waste material passes. On the two rotation axes A and B,
Rotation means (not shown) for synchronously rotating the rotation shafts A and B inward in opposite directions (arrow directions) when viewed from above at the same speed is connected. Two rotating shafts A and B
, A plurality of large-diameter rotary blades 20 are provided with a small-diameter collar 30 around the rotation axes A and B between the adjacent rotary blades 20.
Are fitted and arranged in a standing manner at predetermined intervals so as to be rotatable together with the rotating shafts A and B in a state where they are interposed. A plurality of blades 2 having a shape similar to a hawk's claw are provided around the rotary blade 20.
Numerals 2 are protrudingly arranged with their tips radially arranged at a predetermined pitch in the rotation direction of the rotation axes A and B. The two rotating shafts A and B are arranged such that the inner sides of the plurality of rotating blades 20 around the two rotating shafts A and B alternately overlap with each other, while the plurality of rotating shafts A and B around the two rotating shafts A and B overlap. The rotary blade 20 of the rotary axis A,
It is arranged at a predetermined distance so as to rotate with B. Between each lower side portion of the plurality of rotary blades 20 around each of the two rotary shafts A and B, each comb tooth 42 of a comb-shaped scraper 40 extending from the inner wall of the guide path 10 is provided. With the tips of the triangular-shaped comb teeth 42 slidably in contact with the lower peripheral surface of the small-diameter collar 30 around the rotation axes A and B, the rotary blade 20 around the rotation axes A and B is It is inserted substantially laterally from outside the rotation axes A and B so as not to hinder rotation.

[0003] In this crusher, rotating means
The two rotating shafts A and B can be synchronously rotated at the same speed inward in opposite directions when viewed from above. Next, the object to be crushed is introduced into the guide path 10 from above, so that the object to be crushed is rotated by the rotary blades 20 around the two rotating shafts A and B provided side by side in the guide path 10. Can be guided directly above. Then, the object to be crushed is protruded around the rotary blade 20 that rotates synchronously at the same speed toward the inside in the opposite direction to each other when viewed from above around the two rotation axes A and B, The plurality of rotary blades 20 around the two rotary shafts A and B can be drawn inward while rotating alternately while overlapping on the inner side portion. At the same time, the object to be crushed can be cut by the blade portion 22 protruding around the rotary blade 20. Then, the cut crushed material is
0 can be discharged into the guideway 10 below.

[0004] At this time, a plurality of rotating blades 20 around two rotating axes A and B are alternately overlapped with each other by a blade portion 22 protruding around the rotating blade 20 so as to form a rotating inner side portion. The crushed material that is drawn inward and cut, and is sandwiched between adjacent rotating blades 20 around the rotating shafts A and B.
The object to be crushed that rotates idly with the rotating blade 20
With the comb teeth 42 of the scraper 40 inserted between the lower sides of the rotary blades 20, the scrapers 40 can be scraped out between the adjacent rotary blades 20.
Then, the scraped object to be crushed can be discharged into the guide path 10 below the rotary blade 20.

[0005]

However, when the object to be crushed is crushed using the crusher as described above, the cutting discharged into the guide path 10 below the rotary blade 20 is cut off. The crushed material has a width substantially equal to the gap width between the adjacent rotary blades 20 around the rotation axes A and B, and has a length between the adjacent blade portions 22 protruding around the rotary blade 20. It became a long strip shape close to the pitch width of. The crushed object put into the guideway 10 was finely crushed into small pieces and could not be reduced in volume. Therefore, the cut crushed object cannot be used as it is as a resin molding material, or the cut crushed object cannot be easily and accurately conveyed to another place by using a conveying device that applies air pressure or the like. Was.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a crushing machine which solves such a problem and can reduce the volume by crushing a crushed object into a guide path into small pieces.

[0007]

In order to achieve the above object, a crusher according to the present invention is provided with two rotating shafts A and B provided side by side in parallel in a guide path of a material to be crushed. A plurality of rotary blades around which a large-diameter rotary blade that rotates together with the rotary shafts A and B and a plurality of blade portions protrude around the rotary blade are provided around a rotary shaft between adjacent rotary blades. Are arranged side by side at a predetermined interval with a small-diameter collar interposed therebetween, and the inner side portions of the plurality of rotary blades around the two rotary shafts A and B are alternately overlapped with each other. In the slitter type crusher configured so that a plurality of rotary blades around the rotary shafts A and B rotate together with the rotary shafts A and B, one of the two rotary shafts A and B may be rotated. It is positioned obliquely below the other rotation axis B, and rotates below the inner side of the rotary blade around the rotation axis B. Each of the comb teeth of the scraper having a substantially comb shape between the respective inner side portions of the plurality of rotary blades around A is slidable at its tip to the inner peripheral surface of the collar between adjacent rotary blades around the rotation axis A. In the abutted state, insert the blade around the rotation axis A substantially sideways from the outside so as not to hinder the rotation of the rotation blade around the rotation axis A. A blade portion protruding around the rotary blade around the rotation axis B is made to be able to pass therethrough, and a space between the comb teeth near the root of the scraper is protruded around the rotary blade around the rotation axis A. Rotating means for rotating the two rotating shafts A and B inward in opposite directions when viewed from above, wherein the rotating shaft A is a rotating shaft B. Rotating means for rotating the rotating shaft B in a direction opposite to the rotating direction faster than the rotating speed of the rotating shaft B It is characterized.

[0008] In this crusher, by the rotating means,
The two rotation axes A and B can be rotated inward in opposite directions when viewed from above. At the same time, the rotating means can rotate the lower rotating shaft A in a direction opposite to the rotating direction of the rotating shaft B faster than the rotating speed of the upper rotating shaft B.

Next, the object to be crushed is put into the guide path from above, and the object to be crushed is placed immediately above the rotary blades around two rotating shafts A and B provided side by side in the guide path. Can be guided to Then, the object to be crushed is divided into two rotation axes A and B.
A plurality of rotating blades that rotate inward in opposite directions when viewed from above the circumference are alternately overlapped with each other, and are drawn into the rotating inner side portion by a blade portion protruding around the rotating blade while rotating. Can be.

[0010] At the same time, a plurality of rotating blades around the two rotating shafts A and B are alternately overlapped and the object to be crushed which is drawn inside the rotating inner side portion is projected around the rotating blades. The cut blade portion can be cut into a strip into a width substantially equal to the gap width between the adjacent rotary blades around the rotary shafts A and B.

In this case, the rotary blade is cut into strips by a blade portion protruding around the rotary blade, and is sandwiched between adjacent rotary blades around the lower rotary shaft A to rotate around the rotary shaft A. With the comb teeth of the scraper inserted substantially sideways between the inner side portions of the adjacent rotary blades around the rotation axis A, the crushed material rotating idly with the inner side of the adjacent rotary blades around the rotation axis A is rotated. It can be scraped out between the clubs. Then, the scraped-out material to be crushed is provided on the upper side surface of the comb tooth of the scraper by the blade portion protruding around the rotary blade around the rotation axis B passing near the upper side surface of the comb tooth of the scraper. Can be extruded in any direction. The strip-like crushed material extruded on the upper side surface of the comb teeth of the scraper in the root direction of the scraper is cut by a blade protruding around a rotary blade rotating around the rotation axis A together with the rotation axis A. Then, the blade portion passing between the comb teeth near the root of the scraper can be cut and sandwiched between the blade portion and the root of the scraper. And the strip-shaped object to be crushed can be finely crushed into small pieces.

The object to be crushed into small pieces can be extruded below the scraper through the comb teeth of the scraper by a rotary blade around the rotation axis A passing between the comb teeth of the scraper. Then, the crushed material can be discharged into the guide path below the scraper.

A plurality of rotating blades around the two rotating shafts A and B are alternately overlapped, drawn into the rotating inner side portion, and cut by the blades protruding around the rotating blades. The crushed material which is a strip-like crushed material, which is sandwiched between adjacent rotating blades around the upper rotating shaft B and idles around the rotating shaft B together with the rotating blades, is a rotation of the rotating shaft B. The blade portion protruding around the rotary blade around the rotation axis A that rotates inward in a direction opposite to the rotation direction of the rotation axis B faster than the speed,
It can be scraped out from between the inner side portions of the adjacent rotary blades around the rotary axis B. Then, the scraped-out crushed object can be moved onto the upper side surface of the comb teeth of the scraper below the inner side of the rotary blade around the rotation axis B by using the gravity applied to the crushed object. . Then, the strip-like crushed material moved onto the upper side surface of the comb teeth of the scraper is projected around the rotary blade around the rotation axis B passing near the upper side surface of the scraper in the same manner as described above. The blade portion allows the upper side surface of the comb teeth of the scraper to be pushed out toward the root of the scraper. The object to be crushed, which has been pushed out on the upper side surface of the comb teeth of the scraper in the root direction of the scraper, is cut by the blade portion protruding around the rotating rotary blade around the rotation axis A, and the blade portion and the root of the scraper. And crushed into small pieces. The crushed material crushed into small pieces can be pushed out below the scraper through the comb teeth of the scraper by the rotary blade around the rotation axis A passing between the comb teeth of the scraper. Then, the crushed object can be discharged into the guide path below the scraper.

[0014] Then, all of the crushed objects put into the guide path are finely crushed into small pieces, and can be completely discharged below the guide path.

In the crusher according to the present invention, it is preferable that the rotation axis A is positioned obliquely below the rotation axis B by approximately 45 degrees.

In this crusher, the inner side of the rotary blade around the rotation axis A can be disposed immediately below the inner side of the rotary blade around the rotation axis B. Then, immediately below the inner side of the rotary blade around the rotation axis B, the comb teeth of the scraper inserted substantially horizontally between the inner side portions of the adjacent rotary blades around the rotation axis A can be arranged. Then, the crushed material scraped out from between the inner side portions of the adjacent rotary blades around the rotation axis B by the blade portion protruding around the rotation blade around the rotation axis A is used by utilizing the gravity applied to the crushed material. Thus, the scraper can be accurately moved onto the upper side surface of the comb teeth of the scraper disposed directly below the inner side portion of the rotary blade around the rotary axis B.

In the crusher according to the present invention, the blade protruding around the rotary blade around the rotation axis A rotates while intermittently rubbing the inner peripheral surface of the collar around the rotation axis B, and The two rotating shafts A and B are separated by a predetermined distance so that the blade portion protruding around the rotating blade around the rotating shaft B intermittently rubs the inner peripheral surface of the collar around the rotating shaft A. It is preferable to adopt a structure in which they are arranged side by side.

In this crusher, the rotary blade B is emptied together with the rotary blade around the rotary shaft B by being sandwiched by any part from the periphery of the collar between the adjacent rotary blades around the rotary shaft B to the peripheral portion of the rotary blade. A rotating shaft A that rotates while rotating all of the crushed objects while intermittently rubbing the inner peripheral surface of the collar around the rotating shaft B
The blades protruding around the surrounding rotary blades can scrape out from the inner side portions of the adjacent rotary blades around the rotary shaft B without leaving any space. Further, in a state where the blade portion protruding around the rotary blade around the rotation axes A and B is closest to the inner peripheral surface of the collar, a gap is generated between the blade portion and the inner peripheral surface of the collar, Through the gap, a part of the crushed material thrown into the guide path is not accurately cut by the blades protruding around the rotary blades around the rotation axes A and B, and the crushed comb teeth of the scraper are removed. It can be prevented from being sent out on the upper side.

In the crusher according to the present invention, the rotating means includes a geared electric motor for rotating the rotating shaft A inward as viewed from above, and a small-diameter flat motor fitted to the rotating shaft A. It is preferable to adopt a structure including a gear and a large-diameter spur gear fitted to the rotary shaft B meshed with the small-diameter spur gear.

In this crusher, the rotary shaft A can be rotated inward as viewed from above by the electric motor with gears. At the same time, the rotating shaft B, on which the large-diameter spur gear meshed with the small-diameter spur gear fitted on the rotating shaft A is fitted, is rotated at a speed lower than the rotating speed of the rotating shaft A and opposite to the rotating direction of the rotating shaft A. Can be rotated in any direction. In other words,
The rotation axes A and B can be rotated inward in opposite directions when viewed from above. At the same time, the rotating shaft A can be rotated faster than the rotating speed of the rotating shaft B in the direction opposite to the rotating direction of the rotating shaft B.

[0021]

Next, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a preferred embodiment of the crusher of the present invention, FIG. 1 is a side sectional view, FIG. 2 is a partially broken plan view, FIG. 3 is a side view, and FIG. FIG. Hereinafter, the crusher will be described.

In the figure, reference numeral 10 denotes a guideway having a shape close to a cylindrical shape which faces upward and downward. In the middle of the guideway 10, two rotation axes A and B are provided side by side in parallel at predetermined intervals. Around each of the two rotation axes A and B,
As shown in FIG. 2, a plurality of large-diameter rotary blades 20 having a shape close to a disc rotating with the rotary shafts A and B are formed around the rotary shafts A and B between the adjacent rotary blades 20 as shown in FIG. Color 30
Are arranged side by side at predetermined intervals so as to be rotatable together with the two rotating shafts A and B in a state of being interposed. Around the rotary blade 20, a blade 2 having a shape similar to a hawk's claw
2 are projected radially at a predetermined pitch with their tips directed in the direction of rotation of the rotation axes A and B (the direction of the arrow in the figure). The two rotating shafts A and B are formed such that the inner sides of the plurality of rotating blades 20 around the two rotating shafts A and B alternately overlap with each other while the plurality of rotating blades 20 around the rotating shafts A and B are overlapped. And are arranged side by side at a predetermined interval so as to rotate together.

The above construction is the same as that of the conventional crusher shown in FIG. 5, but in the crusher shown in the figure, one of the two rotation shafts A and B is connected to the other one. It is positioned diagonally below the rotation axis B.

Between each inner side of the plurality of rotary blades 20 around the rotation axis A located below the inner side of the rotary blade 20 around the rotation axis B, each comb tooth of the substantially comb-shaped scraper 40 is provided. 42 is inserted substantially laterally from the outside of the rotary blade 20 around the rotation axis A so as not to hinder the rotation of the rotary blade 20 around the rotation axis A. The tip of each comb tooth 42 of the scraper 40 is connected to the collar 30 between the adjacent rotary blades 20 around the rotary axis A.
Is slidably in contact with the inner peripheral surface of the. The rear end of the scraper 40 is screwed to the inner wall of the guide path 10.
Then, near the upper side surface of the comb teeth 42 of the scraper,
The blade portion 22 protruding around the rotary blade 20 around the rotation axis B is in a state capable of passing therethrough. At the same time, the blade 22 protruding around the rotary blade 20 around the rotation axis A can pass between the comb teeth 42 near the root of the scraper 40.

As shown in FIGS. 2 and 3, the ends of the rotating shafts A and B pass through the side wall of the
Project outside. A small-diameter spur gear 62 is fitted to an end of the rotation shaft A protruding outward from the guide path 10. A large-diameter spur gear 64 is fitted to an end of the rotation shaft B protruding outward from the guide path 10. The small-diameter and large-diameter spur gears 62 and 64 are meshed so as to be rotatable in opposite directions. The rotation axis A can be rotated faster than the rotation speed of the rotation axis B in the direction opposite to the rotation direction of the rotation axis B.

As shown in FIGS. 2 and 4, an electric motor 66 with a gear is mounted on the outer wall of the guideway 10. The output shaft 68 of the geared electric motor 66 is connected to the rotation shaft A. The geared electric motor 66 can rotate the rotating shaft A inward as viewed from above, that is, toward the rotating shaft B side. The small-diameter and large-diameter spur gears 62 and 64 and the geared electric motor 66 constitute a rotating unit 60.

The crusher shown in FIGS. 1 to 4 is configured as described above. Next, an example of use of this crusher and its operation will be described.

The rotating shaft A is driven by the electric motor 66 with gears.
Is rotated inward as viewed from above.

Then, the rotating shaft B on which the large-diameter spur gear 64 meshed with the small-diameter spur gear 62 fitted on the rotating rotating shaft A is moved to the rotating shaft A slower than the rotating speed of the rotating shaft A. A
Can be rotated in a direction opposite to the rotation direction. In other words, the rotation axes A and B can be rotated inward in opposite directions when viewed from above. At the same time, the rotating shaft A can be rotated faster than the rotating speed of the rotating shaft B in the direction opposite to the rotating direction of the rotating shaft B.

Next, a material to be crushed (not shown) is introduced into the guide path 10 from above. Then, the object to be crushed is guided in the guide path 10 immediately above the rotary blades 20 around the two rotation axes A and B provided side by side in the middle of the guide path 10.

Then, the crushed material is rotated inward in opposite directions when viewed from above around two rotation axes A and B provided side by side in the middle of the guide path 10. The blade portion 22 protruding around the rotary blade 20 is provided inside the rotating inner side portion while alternately overlapping the rotary blades 20.
Can be retracted.

At the same time, the object to be crushed drawn into the rotating inner side portion while alternately overlapping the plurality of rotating blades 20 around the two rotating shafts A and B is transferred to the rotating blades 20.
With the blade portion 22 protruding around the periphery, it can be cut into a strip into a width substantially equal to the gap width between the adjacent rotary blades 20 around the rotation axes A and B.

At this time, the blade 22 is cut into a strip shape by the blade portion 22 protruding around the rotary blade 20 and is sandwiched between the adjacent rotary blades 20 around the rotary shaft A. The object to be crushed, which rotates idle with the rotary blade 20, is rotated by the comb teeth 42 of the scraper inserted substantially sideways between the inner side portions of the adjacent rotary blades 20 around the rotary shaft A, so as to be adjacent to the rotary shaft A. It can be scraped out from between the inner side portions of the fitted rotary blades 20.
Then, the scraped object to be crushed is rotated by the rotary blade 2 around the rotary axis B passing near the upper side surface of the comb teeth 42 of the scraper.
The upper side surface of the comb teeth 42 of the scraper can be pushed toward the root of the scraper 40 by the blade portion 22 protruding around the zero. A strip-like crushed object extruded on the upper side surface of the comb tooth 42 of the scraper in the root direction of the scraper 40 is protruded around the rotary blade 20 rotating around the rotation axis A together with the rotation axis A. The blade portion 2 that passes between the comb teeth 42 near the base of the scraper 40
By means of 2, the blade 22 can be sandwiched and divided between the blade portion 22 and the root of the scraper 40. And the strip-shaped object to be crushed can be finely crushed into small pieces.

The material to be crushed into small pieces is passed between the comb teeth 42 of the scraper by the rotary blade 20 around the rotation axis A passing between the comb teeth 42 of the scraper, and the guide path 10 below the scraper 40. Can be discharged into

The plurality of rotary blades 20 around the two rotary shafts A and B are alternately overlapped and drawn into the rotating inner side, and the blade portion 22 protruding around the rotary blade 20 is provided.
Is a strip-like crushed material cut by the rotary shaft B
The object to be crushed, which is sandwiched between the neighboring rotating blades 20 and rotates around the rotating shaft B with the rotating blade 20, is rotated by the rotating shaft B.
Blade portion 2 protruding around the rotary blade 20 around the rotation axis A that rotates faster than the rotation speed of the rotation axis B in the direction opposite to the rotation direction of the rotation axis B
With 2, it can be scraped out from between the inner side portions of the adjacent rotary blades 20 around the rotary axis B. Then, the scraped object to be crushed is moved onto the upper side surface of the comb teeth 42 of the scraper below the inner side of the rotary blade 20 around the rotation axis B by using the gravity applied to the object to be crushed. Can be. Then, the strip-like crushed object moved on the upper side surface of the comb teeth 42 of the scraper is similarly rotated as described above, and the rotary blade around the rotation axis B passing near the upper side surface of the comb teeth 42 of the scraper. The upper side surface of the comb teeth 42 of the scraper can be pushed toward the root of the scraper 40 by the blade portion 22 protruding around the periphery 20. Then, the strip-like crushed material extruded on the upper side surface of the comb teeth 42 of the scraper in the root direction of the scraper 40 is cut by the blade portion 22 protruding around the rotating rotary blade 20 around the rotation axis A. By being sandwiched between the blade portion 22 and the root of the scraper 40, it can be crushed into small pieces. The crushed material crushed into small pieces is rotated by a rotation axis A passing between the comb teeth 42 near the base of the scraper 40.
The surrounding rotary blade 20 can be pushed out below the scraper 40 between the comb teeth 42 of the scraper.
Then, the crushed material can be discharged into the guide path 10 below the scraper 40.

Then, all the objects to be crushed introduced into the guide path 10 are finely crushed into small pieces, and can be completely discharged below the guide path 10.

In this crusher, as shown in FIG. 1, the rotation axis A is preferably positioned obliquely below the rotation axis B by approximately 45 degrees. Then, the inner side of the rotary blade 20 around the rotation axis A is preferably disposed immediately below the inner side of the rotary blade 20 around the rotation axis B. Then, immediately below the inner side portion of the rotary blade 20 around the rotation axis B, the comb teeth 42 of the scraper inserted substantially horizontally between the inner side portions of the adjacent rotary blades 20 around the rotation axis A are arranged. good. The blade portion 22 protruding around the rotary blade 20 around the rotary shaft A causes the rotary shaft B to rotate.
The crushed material scraped out from between the inner side portions of the neighboring rotary blades 20 is comb-shaped by a scraper comb tooth 42 disposed immediately below the rotary blade 20 around the rotation axis B by using gravity applied to the crushed material. Good to be able to move accurately on the upper side.

In this crusher, as shown in FIG. 1, a blade 2 projecting around a rotary blade 20 around a rotary axis A is provided.
2 rotates while intermittently rubbing the inner peripheral surface of the collar 30 around the rotation axis B, and rotates the rotary blade 20 around the rotation axis B.
The blade 22 protruding around the collar 30 is provided with a collar 30 around the rotation axis A.
So that it rotates while intermittently rubbing the inner peripheral surface of the
It is preferable to arrange the rotating shafts A and B side by side at predetermined intervals. The object to be crushed, which is sandwiched by any part from the periphery of the collar 30 between the adjacent rotary blades 20 around the rotary shaft B to the peripheral portion of the rotary blade 20, and idles around the rotary shaft B together with the rotary blade 20. Of the color 30 around the rotation axis B
The blade portion 22 protruding around the rotary blade 20 around the rotary axis A that rotates while intermittently rubbing the inner peripheral surface of the rotary blade 20 so that it can be thoroughly scraped out from between the adjacent rotary blades 20 around the rotary axis B. Good. Further, in a state where the blade portion 22 protruding around the rotary blade 20 around the rotation axes A and B is closest to the inner peripheral surface of the collar 30, between the blade portion 22 and the inner peripheral surface of the collar 30. A gap is formed, and through the gap, a part of the material to be crushed
Blade 2 projecting around rotary blade 20 around rotation axes A and B
It is preferable to prevent the scraper from being sent out onto the upper side surface of the comb teeth 42 without being cut more accurately.

As the rotating means 60 of the crusher, one using a gear train formed by meshing four or more even spur gears may be used.

As shown in FIG. 1, the upper side surface of the comb teeth 42 of the scraper of this crusher is preferably formed in a shape inclined obliquely downward toward the root of the scraper 40. Then, the crushed object moved onto the upper side surface of the comb teeth 42 of the scraper is subjected to gravity applied to the crushed object,
It is preferable that the upper side surface of the comb teeth 42 of the scraper can be smoothly guided toward the root of the scraper 40. The object to be crushed, which is being guided toward the root of the scraper 40 on the upper side surface of the comb teeth 42 of the scraper, is accurately separated by the blade portion 22 protruding around the rotating blade 20 around the rotation axis A. You should be able to cut it.

[0041]

As described above, according to the crusher of the present invention, the objects to be crushed, such as plastic waste materials, which have been thrown into the upper part of the guideway, are arranged in the two guideways. Blades protruding around a plurality of rotary blades that rotate inward in opposite directions when viewed from above around the axes A and B can be finely broken into small pieces. Then, the crushed material finely crushed into small pieces can be discharged downward in the guide path.

In this case, the crushed material to be crushed, which is sandwiched between the adjacent rotary blades around the two rotary shafts A and B and idles around the rotary shafts A and B together with the rotary blades, With the comb teeth of the scraper and the blade portion protruding around the rotary blade around the rotation axis A, the scraper can be scraped out from between the adjacent rotary blades and moved on the upper side surface of the comb tooth of the scraper. The object to be crushed is finely crushed into small pieces by a blade portion protruding around a rotating blade around the rotating shaft A, and can be completely discharged into a guide path below the scraper.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a crusher of the present invention.

FIG. 2 is a partially broken plan view of the crusher of the present invention.

FIG. 3 is a side view of the crusher of the present invention.

FIG. 4 is a front view of the crusher of the present invention.

FIG. 5 is a side sectional view of a conventional crusher.

[Explanation of symbols]

 A, B Rotary shaft 10 Guide path 20 Rotary blade 22 Blade part 30 Collar 40 Scraper 42 Comb teeth of scraper 60 Rotating means 62 Small diameter spur gear 64 Large diameter spur gear 66 Geared electric motor

Continued on the front page F term (reference) 4D065 CA12 CA16 CB02 CC01 CC08 DD08 DD19 DD30 EB14 EC07 ED27 ED29 EE02 EE15 EE19 4F201 BA04 BC02 BC12 BC17 BC25 BL21 BL37 BL38 BL39 BN31 BP11 BP12

Claims (4)

[Claims] 1. A large-diameter rotary blade that rotates with two rotating shafts A and B around two rotating shafts A and B provided in parallel in a guide path of an object to be crushed. A plurality of rotary blades having a plurality of blade portions protruding therearound are provided side by side at predetermined intervals, with a small-diameter collar interposed around a rotary shaft between adjacent rotary blades. While the inner side portions of the plurality of rotating blades around the two rotating shafts A and B are alternately overlapped, the plurality of rotating blades around the two rotating shafts A and B form the rotating shafts A and B. In the slitter type crusher configured to rotate together with one of the two rotation axes A and B, one of the rotation axes A is positioned obliquely below the other rotation axis B, and the periphery of the rotation axis B A substantially comb-shaped screen is provided between the inner sides of the plurality of rotary blades around the rotation axis A below the inner side of the rotary blade. In a state in which each of the comb teeth has its tip slidably in contact with the inner peripheral surface of the collar between the adjacent rotary blades around the rotary axis A, the rotation of the rotary blade around the rotary axis A is prevented. The scraper is inserted substantially sideways from the outside of the rotary blade around the rotation axis A, and a blade portion protruding around the rotary blade around the rotation axis B near the upper side surface of the comb teeth of the scraper is provided. And a blade portion protruding around a rotary blade around the rotation axis A can pass between the comb teeth near the root of the scraper, and the two rotations A rotating means for rotating the shafts A and B inward in opposite directions when viewed from above, wherein the rotating shaft rotates the rotating shaft A faster than the rotating speed of the rotating shaft B in a direction opposite to the rotating direction of the rotating shaft B. A slitter-type crusher characterized by comprising means. 2. The slitter-type crusher according to claim 1, wherein the rotation axis A is positioned obliquely below the rotation axis B by approximately 45 degrees. 3. A blade portion protruding around the rotary blade around the rotation axis A rotates while intermittently rubbing the inner peripheral surface of the collar around the rotation axis B, and rotates around the rotation axis B. The two rotating shafts A and B are arranged side by side at a predetermined interval so that the blade portion protruding around the rotating blade intermittently rubs the inner peripheral surface of the collar around the rotating shaft A. 3. The slitter-type crusher according to 1 or 2. 4. The electric motor with a gear, wherein the rotating means rotates the rotating shaft A inward as viewed from above, a small-diameter spur gear fitted to the rotating shaft A, The slitter-type crusher according to claim 1, 2 or 3, comprising a spur gear and a large-diameter spur gear fitted to the rotating shaft B meshed with the spur gear.