JP3362835B2 - Crush mill cutter and method of manufacturing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crush mill for breaking empty cans into chips (small strips),
In particular, it relates to the structure and manufacturing method of the cutter.

[0002]

2. Description of the Related Art A cutting edge portion having a large number of sawtooth cutting edges inclined in the circumferential direction on the outer peripheral portion, and an annular groove portion having a groove bottom diameter smaller than the core thickness of the cutting edge portion, A cutter for a crush mill, which is provided in large numbers alternately in the axial direction, is known. As shown in FIG. 1, such a cutter uses a pair of sawtooth-shaped cutting blades whose inclinations are opposite to each other, and the cutting blades of the cutters are inserted into each other's annular groove in a posture in which the axes are substantially parallel to each other. In such a state, the metal containers such as empty cans are broken into chips by rotating them in opposite directions, that is, by rotating the saw blades in the direction of inclination.
Each cutting edge of a large number of cutting edges that are continuous in the axial direction across the annular groove is generally out of phase so as to be located on a helical winding twisted around the axis, and is approximately the same as the maximum diameter of the cutting edge. Using a cylindrical tool rough material with an outer diameter dimension of 1 to form a spiral groove on the outer peripheral surface by cutting or the like to form a cutting edge, and to form an annular groove by performing groove processing at regular intervals. The body type is widely used. Further, in order to improve the biting of empty cans and the like, it has been considered to remove some cutting edges around the axis.

[0003]

By the way, in such a cutter, it is necessary to perform surface hardening treatment such as induction hardening after forming the cutting edge and the annular groove portion, but the cutting edge is twisted around the axis. Therefore, uniform heat treatment is difficult,
There is a problem that the axial length changes or bending deformation occurs due to thermal strain. Even in the case of unequal intervals with some cutting edges removed around the axis, the heat treatment becomes non-uniform, and the same problem as described above occurs.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cutter for a crush mill which is less affected by strain due to heat treatment and has high dimensional accuracy.

[0005]

In order to achieve such an object, a first aspect of the present invention is to provide a cutting edge portion in which a large number of sawtooth cutting edges inclined in the circumferential direction are provided in the outer peripheral portion, and a groove. An annular groove portion having a bottom diameter smaller than the core thickness of the cutting edge portion is provided alternately in the axial direction, and in a large number of the cutting edge portions, a cutter for a crush mill in which the phases of the cutting edges are shifted , (A) the cutting edge portion is composed of a large number of cutting edge members manufactured separately, and is integrally attached to a predetermined shaft member , (b)
The cutting edge member is a fitting hole that is fitted into the shaft member.
And a keyway is formed at the same position of its fitting hole
It has the same shape as the
So that it can be attached non-rotatably via the key.
(C) The detent key has a rectangular parallelepiped shape.
In the twist groove formed on the outer peripheral surface of the shaft member.
Along with the twist groove by being forcibly fitted
It is torsionally deformed and integrally fixed to the shaft member.
The mounting phase around the axis of the cutting edge member is
It is characterized in that it is changed corresponding to the groove .

[0006] The second invention provides a crash mill cutter of the first aspect of the invention, the annular groove, the shaft member collar alternately with the cutting edge member having an outer diameter equal to the groove bottom diameter of the annular groove The cutting edge member is formed by being disposed, and the cutting edge member has a plate shape having a constant plate thickness.

A third aspect of the invention is a cutting edge portion having a large number of saw-tooth cutting edges inclined in the circumferential direction on the outer peripheral portion, and an annular groove portion having a groove bottom diameter smaller than the core thickness of the cutting edge portion. And, while being provided in large numbers alternately in the axial direction, in a cutter for a crush mill in which the cutting edges of the cutting edge portions are provided at unequal intervals around the axis, (a) the cutting edge portion, It is composed of a large number of cutting blade members manufactured separately, and is integrally attached to a predetermined shaft member, and (b) a pair of cutters in which the sawtooth cutting blades have opposite inclinations. used as, with the outer peripheral portion of each said cutting edge member enters into the annular groove of the counterpart, the axis O _1, O ₂ about rotatably distribution in posture axis O _1, O ₂ are parallel to each other Are installed, and the rotation phases are symmetrical with each other By being allowed to period rotation, wherein the cutting edge is intended to break bite into chips while pulling the breaking objects with the broken object.

A fourth invention is a manufacturing method for manufacturing the cutter for a crush mill according to the second invention, wherein (a) the outer diameter of the cutting blade member is substantially the same as the maximum diameter of the cutting blade member. A step of preparing a long cylindrical cutter rough material that is sufficiently longer than the axial dimension, and (b) a through hole having the same size as the fitting hole of the cutting edge member is provided on the axial center of the cutter rough material. Forming step, (c) forming a groove having the same shape as the key groove at a predetermined position of the through hole in parallel with the axis, and (d) the rough cutter material having the through hole and the groove formed therein. A step of shredding according to the plate thickness of the cutting edge member, and (e) before or after the shredding, the large number of cuttings on the outer peripheral portion so as to have a constant phase with respect to the groove around the axis. A step of forming a blade, and (f) cutting the cutting edge member with the cutting edge formed into the shaft portion. Characterized by a step of performing a predetermined heat treatment before attachment to. Fourth above
In a fifth aspect of the invention, which is an embodiment of the invention , the step of forming the large number of cutting edges is performed after the step of cutting in accordance with the plate thickness of the cutting edge member, and the large number of cut plate-shaped members. Are attached to a toy equipped with a key with the same helix angle as the rotation stop key in the axial direction, and by machining a helix groove twisted at a predetermined helix angle on the outer peripheral surface, a cutting edge twisted around the axis can be obtained. A large number of formed cutting edge members having the same shape are obtained.

[0009]

In the crush mill cutter of the first aspect of the present invention, since the cutting edge portion is composed of a large number of separately manufactured cutting edge members, the cutting edge requires heat treatment such as surface hardening. Even in this case, by performing heat treatment on each cutting edge member before the cutting edge member is attached to the shaft member, it is possible to avoid a change in axial length and bending deformation due to thermal strain. Further, since these cutting edge members are attached to the shaft member so that the phases of the respective cutting edges are shifted, the load at the time of rupturing an object to be ruptured, such as a metal container, is driven to rotate about the axis. As a result, noise and vibration are suppressed and excellent durability is obtained. When the cutting edges are out of phase in this way, the heat treatment becomes uneven, so in the conventional cutter, the axial length changes and bending deformation easily occurs due to thermal strain. In the invention, since the cutting edge member is formed separately, such a problem is solved.

Further, since the cutting edge member is constructed separately, only this cutting edge member is made of a predetermined material such as die steel, high speed steel, bearing steel, stainless steel, cemented carbide, and cemented carbide. By doing so, it is possible to reduce the cost, and it is possible to use a common shaft member for a plurality of types of cutting blade members in which the optimum blade shape is set according to the object. Furthermore, if these cutting edge members are removably arranged on the shaft member by a fixing means such as a screw, when the cutting edge is worn or damaged, only the cutting edge member is replaced, so that the shaft member or You can use the cutting edge member without any problem.

Further, since numerous cutting edge member has the same shape, the production and management, as well as a simple and assembly work, also for cutter axial length is different,
This can be easily handled by simply changing the number of cutting edge members used.

Further, the anti-rotation key twisted along the twisted groove formed on the outer peripheral surface of the shaft member, since the mounting phase of each cutting edge member is adapted to be varied in response to the helical flute For example, the workability of assembling the cutting edge member with respect to the shaft member is significantly improved as compared with, for example, the case where positioning is performed for each cutting edge member with a separate locking key or the like.

Further , the detent key has a rectangular parallelepiped shape.
By forcibly fitting in the twist groove
The shaft member is twisted and deformed along the twist groove.
Since it is integrally fixed, a rectangular parallelepiped locking key
If you prepare a twisted detent key,
It will be cheaper in comparison.

In the second aspect of the invention, the annular groove portion is formed by alternately disposing the collar having the outer diameter dimension equal to the groove bottom diameter of the annular groove portion on the shaft member and the cutting edge member. Since the cutting blade member has a plate shape with a constant plate thickness, it is possible to manufacture the cutting blade member as in the fourth aspect of the invention, and to fit a plurality of cutting blade members into the fitting holes one by one. The manufacturing cost can be reduced as compared with the case of forming a space or forming a key groove.

The cutter for a crush mill of the third invention is
Since the cutting edge portion is composed of a large number of separately manufactured cutting edge members, the same operational effect as the first invention can be obtained. In the third invention, since the cutting edges are provided at unequal intervals around the axis, for example, by removing a part of the cutting edges provided at equal intervals, a wide interval is partially provided, It is possible to improve the biting performance for an object to be broken such as an empty can. If the cutting edges are provided at unequal intervals in this way, the heat treatment becomes uneven,
In the case of an integrated cutter as in the past, the length in the axial direction is likely to change or bend due to thermal strain, but in the present invention, since the cutting edge member is configured separately, such a problem occurs. It will disappear.

According to the fourth aspect of the present invention, a through hole having the same size as the fitting hole is formed in the rough material of the cylindrical cutter, and a groove having the same shape as the key groove is formed in parallel with the shaft center. Since the formed rough material of the cutter is cut into pieces according to the plate thickness of the cutting edge member, the manufacturing cost is reduced compared to the case of forming fitting holes one by one or forming a key groove. To be done. If the shape of the cutting edge of the outer peripheral part changes in the axial direction, for example, if it is twisted in the same way as the conventional twisting blade, it is desirable to machine the cutting edge after cutting the rough material of the cutter. If the shape of the cutting edge is constant in the axial direction, it is possible to easily form the cutting edge before cutting the rough material of the cutter, and in that case, the manufacturing cost is further reduced.

Further , in the fifth aspect of the invention, the plurality of cutting edges are
The step of forming is cut into pieces according to the plate thickness of the cutting edge member.
After the process
The member was attached with a key with the same helix angle as the rotation stop key
Attach to the toy in the axial direction and attach the specified screw on the outer peripheral surface.
Since a twist groove twisted at a helix angle is processed,
Multiple cutting edge parts of the same shape with twisted cutting edges
The material can be obtained.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention can be applied to a crush mill cutter for breaking various objects such as metal containers such as empty cans, plastic containers such as PET bottles, rubber products such as old tires, and corrugated cardboard. . The material of the cutting edge member is appropriately set according to the object to be broken, and it is particularly effective when performing heat treatment such as quenching, but it is also possible to use a cutting edge member of a material that does not undergo heat treatment such as cemented carbide. Is.

In the first invention, for example, the cutting edges of the respective cutting edge members which are continuous in the axial direction with the annular groove portion therebetween are arranged so as to be positioned on the spiral winding having a constant helix angle.

Examples of the anti-rotation keys in the first invention, if it Gillet angle is small and about 5 °, it is also possible to add fit while twisting deformed along the grooves twisting things rectangular parallelepiped shape. The helix angle of the helix groove is set according to the helix angle of the cutting edge (the phase shift of many cutting edge members), and the helix angle of the cutting edge takes into consideration the material and size of the object to be broken. Is set. When breaking an empty can for beverage, the helix angle of the cutting edge is set to, for example, about 10 °, and if the diameter dimension of the shaft member is about 1/2 of the cutting edge, the helix angle of the helix groove is also about 1/2. It may be about 5 °. Strictly speaking, assuming that the diameter of the shaft member is D ₁ , the diameter of the cutting edge member is D ₂ , and the helix angle of the cutting edge is α, the helix angle θ of the helix groove should satisfy the following equation (1). Should be set to. tan θ = tan α · (D ₁ / D ₂ ) ... (1)

In the second aspect of the invention, the annular groove is formed by the collar, but the annular groove is formed by another method such as integrally providing the cutting blade member with the same annular protrusion as the collar. It is also possible.

As the material of the cutter rough material (cutting edge member) of the fourth invention, die steel, high speed steel, bearing steel, martensite which can be processed by cutting or the like and which can be surface hardened by heat treatment. A stainless steel is preferably used. Examples of martensitic stainless steels include SUS403 and SUS410 (JIS standard), which have excellent corrosion resistance and are resistant to rust, and therefore are particularly suitable for use as a cutter for a crush mill for empty cans such as juice. The processing method such as punching, grooving, and cutting, and the heat treatment method are appropriately determined according to the material of the cutting edge member.

Further, the present invention is preferably applied to a small crush mill disposed near an automatic vending machine for canned drinks or the like, or at a store or the like, and breaking one to several empty cans or PET bottles. It can also be applied to a large crush mill capable of breaking a large amount of empty cans, PET bottles, etc. at a recycling plant.

Embodiments of the present invention will be described below in detail with reference to the drawings. The crush mill 10 shown in FIG. 1 breaks a cylindrical empty can 12 that is thrown in from above into a chip shape, and is provided with a pair of cutters 14 and 16 to which the present invention is applied, and is broken. Chip 18
Are accumulated in the lower collecting container 20. The crush mill 10 is arranged, for example, in the vicinity of a vending machine for canned beverages, and collects empty cans 12. The empty cans 12 are a pair of cutters in a vertical posture as shown in FIG. A guide or the like (not shown) guides the vehicle so that it falls between 14 and 16.

The pair of cutters 14 and 16 are constructed substantially symmetrically, and the plan view of FIG.
As shown in FIG. 3 in which 6 is separately shown, the shaft members 22 and 24, each of which has a substantially cylindrical shape, and the shaft members 22 and 24.
A large number of cutting edge members 2 alternately arranged in the axial direction
6 and 28 and collars 30 and 32, the cutting edge members are constituted by the cutting edge members 26 and 28, and the annular groove portions 34 and 3 are provided on the outer peripheral side of the collars 30 and 32.
6 is formed. The cutting blade members 26, 28 have saw-tooth-shaped cutting blades 38, 4 slanted in the circumferential direction on their outer peripheral portions, respectively.
Although a large number of 0s are provided in the circumferential direction, the cutting edge 38 of the cutter 14 on the right side in the front view of FIG. 1 is tilted counterclockwise around the axis O ₁ and is separated by the annular groove 34. A large number of cutting edge members 2 connected in the axial direction
No. 6 is out of phase so that each cutting edge 38 is located on the spiral winding twisted counterclockwise. In addition, the cutting edge 40 of the cutter 16 on the left side in the front view of FIG.
_A large number of cutting edge members 28, which are inclined clockwise around ₂ and are continuous in the axial direction across the annular groove 36, are arranged so that each cutting edge 40 is positioned on the helical winding twisted clockwise. It is out of alignment. Color 3
The outer diameters of 0 and 32 are the core thickness of the cutting edge members 26 and 28, that is, the groove portion (rake face portion) between the cutting edges 38 and 40.
Well smaller than the smallest diameter dimension in
The outer peripheral surfaces of 0 and 32 form the groove bottoms of the annular groove portions 34 and 36.

The cutters 14 and 16 have outer peripheral portions of the respective cutting edge members 26 and 28, that is, the cutting edges 38,
In a posture in which the shafts 40 are horizontally separated from each other by a predetermined dimension so that the shafts 40 completely enter the annular grooves 36, 34 of the mating side, and the shaft centers O ₁ , O ₂ are parallel to each other, the shaft centers O ₁ , O ₂ so as to be rotatable. Then, the cutters 14 are rotated counterclockwise with respect to each other, that is, in the front view of FIG.
With respect to the cutter 16 in which 0 is inclined in the clockwise direction, the cutting edge 38,
40 bites into the empty can 12 and pulls the empty can 12 downward and breaks into chips. Cutter 14,1
6 is synchronously rotated in a rotational phase that is symmetrical as shown in FIG. In addition, the shaft member 22,
The one end portion 42, 44 of the 24 is rotatably supported via bearings and the like, and the other end portion 46, 48 is connected with a synchronous rotation mechanism such as a meshing gear via a detent key, etc. Rotational drive means such as a motor is driven to rotate around the axes O ₁ and O ₂ , respectively.

Explaining in detail one cutter 14, the shaft member 22 is made of carbon tool steel such as SK5 (JIS standard) as shown in FIG. 4, and the cutting edge member 26 is SUJ2 (JIS standard). 6), the collar 30 is made of SK5 (JI
It is constituted by carbon tool steel such as S standard) as shown in FIG. 4A is a front view of the shaft member 22, FIG. 4B is a side view seen from the other end portion 46 side, FIG. 4C is a side view seen from the one end portion 42 side, and FIG. ) Is a right side view in which (b) is partially cut away, (b) is a front view, (a) in FIG. 7 is a right side view in which (b) is partially cut out, and (b) is It is a front view.

In FIG. 4, the shaft member 22 has one end portion 42.
And a flange 52 is integrally provided inside the other end portion 46. The cutting edge is provided on the cylindrical main body portion 54 between the male screw 50 and the flange 52. While the members 26 and the collar 30 are alternately fitted by a predetermined number, and finally the washer 56 is mounted, the nut 58 as the fixing means is attached to the male screw 50.
A large number of cutting blade members 26 and collars 30 are detachably attached to the shaft member 22 by being screwed into. The cutting blade member 26, the collar 30, and the washer 56 have fitting holes 60 and 6 having inner diameters substantially equal to the outer diameter of the main body portion 54, respectively.
2, 64 (see FIG. 9) are provided. Further, a pair of flat surfaces 66 is provided on the outer peripheral surface of the flange 52 for tool locking.

FIG. 8 is a view showing the nut 58.
6B is a left side view in which a part of (b) is cut away, and (b) is a front view, in which a pair of flat surfaces 68 are provided for tool locking.
Further, FIG. 9 is a view showing the washer 56, (a) is a left side view in which a part of (b) is cut away, and (b) is a front view.

Further to the shaft member 22, the outer peripheral surface ranging from the male thread 50 portion to the flange 52 portion that has spiral flutes 70 twisted around the left at a predetermined twist angle θ is provided. FIG. 5 shows a rectangular parallelepiped locking key 72, which is called S4.
It is made of carbon steel such as 5C (JIS standard).
For example, hit it with a hammer etc. into the twist groove 70 of the shaft member 22.
By forcibly fitting it, the screw is twisted along the twist groove 70.
Can be deformed and integrated by brazing, screwing, etc.
Fixed. The twist angle θ is, for example, the outer diameter of the cutting blade member 26 or the shaft member 22 so that the cutting blades 38 of the many cutting blade members 26 that are continuous in the axial direction are located on the helical winding twisted at a twist angle of about 10 °. The angle is determined to be about 4 ° to 5 ° according to the formula (1) based on the dimensions. Cross-section of the anti-rotation key 72 is a square, about half is fitted into the spiral flute 70, half is adapted to protrude from the main body portion 54 to the outer peripheral side. The cutting edge member 26 is provided with a rectangular key groove 74 that engages with the rotation stopping key 72, and the mounting phase around the axis O ₁ of the shaft member 22 is defined by the rotation stopping key 72. It is designed to be shifted counterclockwise as it goes to the front. Keyway 7
The groove width of No. 4 is larger than the width dimension of the detent key 72 in consideration of the twist of the detent key 72. Also, the collar 30 and washer 56 similarly keyways 76 and 78 that have been provided.

A large number of cutting edge members 26 have a plate shape with a constant plate thickness as is apparent from FIG. 6 and have the same shape including the key groove 74, and the shaft members alternate with the collar 30. The cutting edges 38 of a large number of cutting edge members 26 that are axially connected to each other with the collar 30 interposed therebetween are fitted to the main body portion 22 of 22 and the mounting phase around the axis O ₁ is positioned by the detent key 72. Phase is twist groove 70
It is designed to be positioned on a helical winding twisted at a predetermined twist angle corresponding to the twist angle θ of the rotation stop key 72, in this embodiment about 10 °. The tip of each cutting edge 38 is also a twisted blade (right protruding blade) twisted at substantially the same twist angle. Further, in each cutting blade member 26, 12 cutting blades 38 are provided at unequal intervals around the axis, but originally, 16 cutting blades are provided at equiangular intervals.
90 as indicated by the dotted line in FIGS.
The four cutting edges located at ° intervals are removed and thinned out. The multiple collars 30 also have a plate shape with a constant plate thickness, and have the same shape including the key groove 76.

The cutting edge member 26 is manufactured through the steps shown in FIG. That is, first, as shown in (a), a long cylindrical cutter rough material 80 having an outer diameter substantially the same as the maximum diameter of the cutting edge member 26 and sufficiently longer than the axial dimension of the cutting edge member 26 is used. prepare. Next, as shown in (b), a through hole 82 having the same size as the fitting hole 60 of the cutting blade member 26 is formed in the shaft center of the cutter rough material 80 by cutting with a drill or the like. As shown, a groove 8 having the same shape as the key groove 74 is formed at an arbitrary position of the through hole 82.
4 is formed in parallel with the axis by slotter or wire cutting. Then, as shown in FIG.
2 and the cutter rough material 80 in which the groove 84 is formed are cut into pieces with a metal saw, a cutting tool or the like so as to have the same thickness as the plate thickness of the cutting edge member 26, and a large number of the cut plate-like members 86 are prepared in advance. A large number of twist grooves twisted at a predetermined twist angle (about 10 ° in this embodiment) by a milling cutter or the like are attached to a toy equipped with a key having the same twist angle as the rotation stopping key 72 so as to be continuous in the axial direction. By processing, a large number of cutting edges 3 based on the groove 84
A large number of cutting edge members 26 having the same shape and having 8 formed therein can be obtained. (e) is a diagram showing the cutting edge member 26, and the surface may be hardened by subjecting it to a predetermined heat treatment such as induction hardening. Then, a predetermined number of the cutting blade members 26 and the collar 30 are alternately fitted to the main body portion 54 of the shaft member 22 in which the rotation stopping key 72 is previously fixed in the twist groove 70, and the washer 56 is attached. Nut 58 with male screw 5
If it is screwed into 0, the cutter 14 is manufactured.

A cutter 14 for such a crash mill
In the above, the cutting edge portion is composed of a large number of separately manufactured cutting edge members 26.
Since the heat treatment is performed before the attachment to the shaft member 22, it is possible to avoid a change in axial length and a bending deformation due to thermal strain. That is, the cutting edge member 26 is attached to the shaft member 22 so that the phase of the cutting edge 38 is shifted, so that the load when the empty can 12 is broken by being rotationally driven around the axis O ₁ is dispersed, and The generation of vibration is suppressed and excellent durability is obtained, and part of the cutting edge is removed to leave a wide space in part to improve the biting performance on the empty can 12. However, if the cutting edges 38 are out of phase or provided at unequal intervals in this manner, the heat treatment becomes non-uniform, and therefore, in the conventional integrated cutter, the axial length is shortened due to thermal strain. Although it is easy for the cutter 14 to change or to be bent, such a problem is solved because the cutting blade member 26 of the cutter 14 of this embodiment is formed separately.

Further, since only the cutting edge member 26 is made of bearing steel, and the shaft member 22 and the collar 30 which are not involved in the breakage of the empty can 12 are made of carbon tool steel, the cutter 14 is inexpensively constructed. In addition, since the cutting edge member 26 is detachably attached to the shaft member 22 by the nut 58, when the cutting edge 38 is worn or damaged, only the cutting edge member 26 is replaced to change the shaft member 22 and the collar 30. It is possible to use the cutting blade member 26, which has no problem, as it is.

Further, in this embodiment, a large number of cutting edge members 26
Since they have the same shape, their manufacturing, management, and assembling work are easy, and even for cutters with different axial lengths, simply change the number of cutting edge members 26 to be used. It can be handled easily.

Further, by forcibly fitting into the twist groove 70 formed on the outer peripheral surface of the shaft member 22 , the twist
By the rotation stop key 72 which is twisted and deformed along the groove 70, the attachment phase of each cutting edge member 26 is changed to the twist groove 72.
The cutting blade member 26 is attached to the shaft member 22 as compared with the case of positioning each cutting blade member 26 with a separate locking key or the like. The workability of is greatly improved.

In addition, a cuboid stop key 72 is prepared.
Therefore, as shown in FIG.
The locking key 140 that is twisted accordingly
It is fitted in and fixed integrally by brazing etc.
It will be cheaper than if it were. Of FIG.
(a) is a plan view of (b), (b) is a front view, and (c) is in (b).
It is a Vc-Vc sectional view.

Further, the cutting edge member 26 has a plate shape with a constant plate thickness, and in the manufacturing thereof, the cylindrical rough cutter material 80 is formed in the through hole 8 having the same size as the fitting hole 60.
2 is formed and a groove 84 having the same shape as the key groove 74 is formed in parallel with the axis, and the cutter rough material 80 having the through hole 82 and the groove 84 is cut according to the plate thickness of the cutting blade member 26. The fitting holes 60
The manufacturing cost is reduced as compared with the case where the key groove 74 is formed.

The other cutter 16 is also constructed substantially in the same manner as the cutter 14, and similar effects can be obtained. Specifically, between the flange 90 and the nut 92 provided on the shaft member 24, a large number of cutting blade members 28 and the collar 32 are relatively unrotatable via a rotation stop key (not shown), and the cutting blade members 28 are not rotatable. Is attached in a detachable manner while being positioned in a predetermined attachment phase. However, in the case of the cutter 16, the flange 90 is provided on the one end portion 44 side, and the nut 92 is screwed to a male screw (not shown) provided on the other end portion 48 side. A washer 94 is arranged on the side. Further, the twist groove for disposing the rotation-stop key has a right-handed helix (the helix angle is about 4 ° to 5 °), and a large number of cutting blade members 28 arranged in the axial direction are provided at the front end in the axial direction. The mounting phase around the axis O ₂ is shifted to the right as it goes toward.

Next, another embodiment of the present invention will be described. In the following embodiments, the same parts as those in the above embodiment will be designated by the same reference numerals and the description thereof will be omitted.

FIG. 11 is a view corresponding to FIG. 3, and in these cutters 100 and 102, the tips of the cutting edges 108 and 110 of the cutting edge members 104 and 106 are the axial center O ₁ as compared with the above embodiment. , O ₂ and a flat blade parallel to O ₂ . In this case, as shown in (d) of FIG. 12, before cutting the cutter rough material 80, by cutting a groove parallel to the axial center on the outer peripheral surface, the cutting edges 108, 110
Since the blade 112 having the same shape can be easily formed, the manufacturing cost can be further reduced as compared with the case where the cutting edge 38 is machined into a large number of plate-shaped members 86 that are cut as in the above-described embodiment. Further, since the cutting edge members 104 and 106 have the same shape, the manufacturing cost can be further reduced and the management of parts can be facilitated. It should be noted that, similarly to the above-described embodiment, the cutting blades 108, 11 are cut after the rough cutter material 80 is cut into pieces.
You may make it form 0.

The embodiment shown in FIG. 13 is the same as the crash mill 1 described above.
No. 0, a magnet 120 is arranged at the dropping portion of the chip 18, and the aluminum can chip and the steel can chip are separated and collected in the collection containers 122 and 124. Magnets 120 have form a cylindrical shape, and at least its outer peripheral portion is constituted by a magnet, the axis O _1, O ₂
Rotatably about axes parallel to the axes O ₁ ,
It is arranged at a position displaced from the middle position of O _{2 to} the left side (the side of the cutter 16) by a predetermined dimension smaller than the radial dimension of the magnet 120, and is rotationally driven in the right rotation direction shown by the arrow and the rotation direction thereof. At the downstream side (right side in the figure) of the highest position in the
Is designed to be dropped. Also, the magnet 120
A scraper 126 is fixedly arranged at the lower part of the scraper so that the steel can chips adsorbed by the magnet 120 are stripped off, and a recovery container 122 for recovering the steel can chips is arranged below the scraper 126. Is
A recovery container 124 for recovering the aluminum can chips that are not attracted to the magnets 120 is disposed on the right side thereof, that is, at a position where the aluminum can chips fall.

Further, the cutter 14 of the first embodiment is left-handed, and each cutting edge 38 has a right protruding edge shape.
The cutter 100 has a left-handed twist and each cutting edge 108 has a flat-blade shape, but as shown in FIGS. 14 (a) and 14 (b), it has a left-handed left protruding blade shape or a left-handed middle protruding. Various forms such as a blade shape can be adopted. In the case of (b) the shape of the middle protruding blade, it is resistant to chipping and excellent durability is obtained, and the cutting edge members of the left and right cutters are common (same shape). As shown in FIGS. 15 (a) to 15 (d), a right-handed left protruding blade shape, a right-handed right protruding blade shape, a right-handed middle protruding blade shape, a right-handed flat blade shape, etc. may be used. It is possible and is appropriately set according to the material of the object to be broken. The cutting edge shape of the other cutter 16 or 102 is
It is configured symmetrically with 100.

16 (a) and 16 (b), a pair of cutters 130, 13 used by being meshed with each other is used.
It is a figure which shows two cutting edges, when they are asymmetric.
That is, the cutter 132 on the right side shown in FIG.
As in (a), the cutting edge of each cutting edge has a left protruding edge shape with a right twist, but the left cutter 130 shown in (a) has a left protruding edge shape with a left twist, Both cutting edges are almost parallel. In this case, a good shearing action can be obtained with respect to a relatively soft object, and it is preferably applied to a crush mill for plastic containers such as PET bottles. For other various cutters (Fig. 14 (a), Fig. 15 (b), etc.) whose cutting edges are inclined with respect to the axis, similarly make sure that the cutting edges of a pair of cutters are parallel. Can be configured asymmetrically.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the present invention can be implemented in other modes.

For example, in the above-described embodiment, the empty can 12 is allowed to fall naturally from above in the axial direction, but it is possible to provide a pressing means for pressing the empty can 12 to forcefully feed it. It is not always necessary to remove a part of the cutting edges to make them unequal in space, and it is also possible to push the empty can 12 sideways between the cutters 14 and 16 for breaking processing. In addition, the empty can 12 does not necessarily have to be loaded from above, but may be loaded from the lateral direction.

Although the cutting edge members 26, 28 are made of bearing steel, it is also possible to use martensitic stainless steel such as SUS403, SUS410 (JIS standard), which has excellent corrosion resistance and is resistant to rust. is there.

Further, although the crush mill 10 of the above-described embodiment processes the empty cans 12 one by one, it is also possible to lengthen the axial dimension so that a plurality of empty cans 12 can be simultaneously broken. .

Although not illustrated one by one, the present invention can be carried out in various modified and improved modes based on the knowledge of those skilled in the art.

[Brief description of drawings]

FIG. 1 is a schematic diagram illustrating an example of a crush mill including a cutter that is an embodiment of the present invention.

2 is a plan view showing a pair of cutters of the crush mill of FIG. 1. FIG.

FIG. 3 is a view showing a pair of cutters of FIG. 2 separately.

FIG. 4 is a view showing a shaft member which is a component of the cutter shown in FIG. 3 (b).

FIG. 5 is a view showing a detent key that is a component of the cutter shown in FIG. 3 (b).

6 is a view showing a cutting edge member which is a component of the cutter shown in FIG. 3 (b).

7 is a view showing a collar which is a component of the cutter shown in FIG. 3 (b).

8 is a view showing a nut which is a component of the cutter shown in FIG. 3 (b).

9 is a view showing a washer which is a component of the cutter of FIG. 3 (b).

10 is a diagram illustrating a manufacturing process of the cutting edge member of FIG.

FIG. 11 is a diagram for explaining another embodiment of the present invention and is a diagram corresponding to FIG. 3.

FIG. 12 is a drawing for explaining the manufacturing process of the cutting edge member of the embodiment of FIG.

FIG. 13 is a diagram illustrating a case where chips can be separated and collected in the crush mill of FIG. 1.

FIG. 14 is a diagram showing another mode of the left-handed cutting edge shape.

FIG. 15 is a view showing various aspects of right-handed cutting edge shapes.

FIG. 16 is a diagram illustrating another example of cutting edge shapes of a pair of cutters that are used by being meshed with each other.

FIG. 17 is a view showing a detent key that is twisted corresponding to the twist groove of the shaft member .

[Explanation of symbols]

10: Crush mill 14, 16, 100, 102, 130, 132: Cutter 22, 24: Shaft member 26, 28, 104, 106: Cutting edge member 30, 32: Collar 34, 36: Annular groove 38, 40, 108 , 110: Cutting edge 60: Fitting hole 70: Twist groove 72, 140: Detent key 74: Key groove 80: Cutter rough material 82: Through hole 84: Groove 86: Plate-shaped member

Continuation of the front page (56) References JP-A-8-1030 (JP, A) JP-A-60-77788 (JP, A) Actually opened 62-160659 (JP, U) Actually opened 3-96119 (JP , U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B02C 18/00-18/44

Claims (5)

(57) [Claims] 1. A cutting edge part having a large number of sawtooth cutting edges inclined in the circumferential direction on the outer peripheral part, and an annular groove part having a groove bottom diameter smaller than the core thickness of the cutting edge part. In a crush mill cutter in which a large number of blades are provided alternately in the axial direction, and the phases of the cutting edges are shifted in the large number of cutting edges, the cutting edges are a number of separately manufactured cutting edges. And a plurality of cutting edge members, each of which has a fitting hole to be fitted into the shaft member and is provided at the same position of the fitting hole. It has the same shape with a key groove formed therein and is attached to the shaft member so as to be unable to rotate relative to the shaft member, while the detent key has a rectangular parallelepiped shape. Of the shaft member
Forcibly fitted in the twist groove formed on the outer peripheral surface
By doing so, it is twisted and deformed along the twist groove, and
A cutter for a crash mill, wherein the cutter is integrally fixed to a shaft member, and a mounting phase around an axis of the cutting edge member is changed corresponding to the twist groove. 2. The annular groove portion is formed by arranging a collar having an outer diameter dimension equal to the groove bottom diameter of the annular groove portion on the shaft member alternately with the cutting edge member. The crush mill cutter according to claim 1, wherein the blade member has a plate shape having a constant plate thickness. 3. A cutting edge part having a large number of sawtooth cutting edges inclined in the circumferential direction on the outer peripheral part, and an annular groove part having a groove bottom diameter smaller than the core thickness of the cutting edge part. In a crush mill cutter in which a large number of cutting edges are provided alternately in the axial direction, and the cutting edges of the cutting edges are provided at unequal intervals around the axis, the cutting edges are manufactured separately. It is composed of a large number of cutting edge members, is integrally attached to a predetermined shaft member, and a pair of cutters with the sawtooth-shaped cutting edges having opposite inclinations are used as one set, and each of the cutting edge members is used. The outer peripheral part of the shaft enters the mating annular groove part, and the shafts O ₁ and O ₂ are rotatably arranged around the shaft centers O ₁ and O _{2 in} a posture in which the shaft centers O ₁ and O ₂ are parallel to each other, and the rotational phase is symmetrical. To rotate in opposite directions synchronously Thus, the cutter for a crush mill is characterized in that the cutting edge bites the object to be broken and breaks into a chip shape while drawing the object to be broken. 4. The manufacturing method for manufacturing the cutter for a crush mill according to claim 2 , wherein the outer diameter of the cutting blade member is substantially the same as the maximum diameter of the cutting blade member, and the outer diameter dimension of the cutting blade member is larger than the axial dimension of the cutting blade member. To prepare a long and long cylindrical rough cutter material, a step of forming a through hole having the same size as the fitting hole of the cutting blade member in the axial center of the rough cutter material, and A step of forming a groove having the same shape as the key groove at a predetermined position in parallel with the shaft center, and a step of cutting the rough cutter material in which the through hole and the groove are formed according to the plate thickness of the cutting edge member. And a step of forming the plurality of cutting edges on the outer peripheral portion so as to have a constant phase with respect to the groove around the axis before or after the cutting, and the cutting with the cut and cutting edges formed. Perform predetermined heat treatment before attaching the blade member to the shaft member. A method for manufacturing a cutter for a crush mill, which comprises: 5. The step of forming the large number of cutting edges is performed after the step of cutting according to the plate thickness of the cutting edge member, and the large number of cut plate-shaped members is the same as the rotation stopping key. By attaching to a toy equipped with a key with a helix angle in a row in the axial direction and processing a helix groove twisted at a predetermined helix angle on the outer peripheral surface, a large number of identical shapes with a cutting edge twisted around the axis center are formed. The method for producing a cutter for a crush mill according to claim 4 , wherein the cutting edge member is obtained.