JP2517146Y2 - Cutting processor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a cutting apparatus for cutting waste such as metal scraps produced in various factories, and more particularly to a cutting apparatus having a rotary cutter.

[Prior Art] Conventionally, as a technology of this kind of field, mainly wastes such as empty cans and metal scraps are to be treated as shown in FIGS.
The one shown in the figure is known.

 The outline will be described below with reference to FIG.

In FIG. 8, reference numeral 1 denotes a box, and two rotating shafts 3 and 4 are supported by the box 1 via bearings 2 ... In parallel with each other.

Each of the rotary shafts 3 and 4 has a rotary cutter 5 in which a plurality of blades 5a (FIG. 9) are arranged along the circumferential direction in a portion extending into the box 1, and a diameter smaller than the rotary cutter 5. Of the rotary cutters A, B as a whole are alternately fitted to and supported by outer spacers 6 and 6 in the axial direction.
Is composed.

In the rotary cutter groups A and B, the thickness of the rotary cutter 5 and the thickness of the spacer 6 are equal to each other. The rotary cutter 5 of the other rotary cutter group is fitted between the five and five.
That is, the spacer 6 of one rotary cutter group functions as a receiving portion for the rotary cutters 5 of another rotary cutter group.

In the rotary cutter groups A and B, the axial distance between the rotary shafts 3 and 4 is half the sum of the outer diameter of the rotary cutter 5 and the outer diameter of the spacer 6. There is. As a result, when the rotary cutter group rotates, the cutting edge of the blade 5a of the rotary cutter 5 in one rotary cutter group comes into contact with the outer peripheral surface of the spacer 6 in the other rotary cutter group.

In addition, the rotary shaft 3 protruding outward from the box 1,
Spur gears 7 and 8 meshing with each other are attached to one end of 4. Further, a reduction gear fixed to the box 1 is provided at the other end of the rotary shaft 3 protruding outward from the box 1.
A motor 11 is connected via 10. The motor 11 is 2
The leg portions 11a of the row are fixed to the base of the processing device by a plurality of bolts 12. The rotary cutter group A is rotationally driven by the motor 11, and the rotary cutter group B is rotationally driven in the opposite direction to the rotary cutter group A through the spur gears 7 and 8.

In addition, inside the box 1, comb tooth-shaped fixed blades 13 and 13 that are in contact with both the rotary cutter 5 and the spacer 6 are provided at positions outside the rotary cutter 5 and the spacer 6. Further, as shown by an imaginary line in FIG. 8, a hopper 15 having an opening 14 extending over almost the entire area of the rotary cutter groups A and B is mounted on the box 1.

Next, the rotary cutter 5 of the conventional cutting apparatus configured as described above will be described in more detail with reference to FIG.

On the outer periphery of the rotary cutter 5, a plurality of blades 5a having the same shape are arranged along the circumferential direction. In each of the blades 5a, the cutting tooth surface 14a has a rotary cutter 5a.
It is formed so as to coincide with the radiation surface of. Further, the extending direction of the blade tip of the blade 5a of the rotary cutter 5 coincides with the extending direction of the generatrix of the rotary cutter 5 (9th embodiment).
Figure). As a result, when the blade edge of the blade 5a of the rotary cutter 5 in one rotary cutter group abuts on the outer peripheral surface of the spacer 6 in the other rotary cutter group, the entire blade edge of the blade 5a contacts the outer peripheral surface of the opposing spacer 6. It is contacted at the same time.

 Next, the operation of this cutting processing device will be described.

When the motor 11 is driven, the rotational force of its drive shaft is reduced.
The rotary cutter group A is first transmitted to the rotary shaft 3 via 10 to rotate the rotary cutter group A, and is further transmitted to the rotary shaft 4 via the spur gears 7 and 8 to rotate the rotary cutter group B. In this case, the rotating cutter groups A and B rotate in directions opposite to each other, and moreover, the cutting blade surface 16a of the rotating cutter 5 allows the workpiece to be drawn between the rotating cutter groups A and B. (See arrow in FIG. 9). This rotation direction is the positive direction of the rotary cutter groups A and B.

Here, when an object to be processed such as an empty can or a metal scrap is put into the hopper 15, the object to be processed is loaded on the rear surface 16b of the blade 5a, and the rotary cutter group A is rotated by the following cutting edge surface 16a. , B, and is cut into a predetermined size mainly by the shearing action of the blades 5a in the rotary cutter groups A and B. Then, the processed material (cutting powder) cut in this way is discharged downward through the gap between the rotary cutter 5 and the spacer 6, which is formed by the rotation of the rotary cutter groups A and B.

The cutting of the object to be processed is also performed by the interaction between the blade 5a and the spacer 6 facing it. That is, as shown in FIG. 9, for example, when the cutting edge of the blade 5a of the rotary cutter 5 in the rotary cutter group A contacts the spacer 6 in the rotary cutter group B, a part of the object to be processed is
When present at the cutting edge position of 5a, the blade 5a of the rotary cutter group A and the spacer 6 of the rotary cutter group B are present in this cutting apparatus.
The object to be processed is pushed off by and.

By the way, in order to cut the cutting powder into small pieces, both the thickness t of the rotary cutter 5 and the spacer 6 in the rotary shaft direction may be made thin. FIG. 10 is a view showing a partial cross-sectional view of a rotary cutter group in which the thickness t of the rotary cutter 5 and the spacer 6 is made thinner than that of the example shown in FIG. 8 and cutting powder can be made smaller.

In the manufacture of this cutting apparatus, it is necessary to align the individual units of the rotary cutter 5 and the spacer 6 which are individually formed, in parallel in the direction of the rotary shaft without any gap.

Further, in the conventional example shown in FIG. 10, rounded portions are provided on both sides of the cutting edge of the disk 5. This is to prevent the blade 5a from being easily damaged when the corners on both sides of the cutting edge are sharp.

[Problems to be Solved by the Invention] However, in order to shred the object to be processed, the thickness t of the rotary cutter 5 and the spacer 6 may be reduced,
When the thickness t is reduced, the rotary cutter 5 itself becomes brittle. As a result, the rotary cutter 5 having a reduced thickness t
Then, at the time of the cutting process, there is a risk that a crack may be formed from the inner peripheral surface to the outer peripheral surface of the rotary cutter 5, or the rotary cutter 5 may be damaged, leading to an unexpected accident.

Further, since the rotary cutters and the spacers are fitted on the rotary shaft one by one, the rotary cutters and the spacers are alternately fitted to each other by a load acting on the rotary cutters when there is a dimensional error between the rotary cutters and the spacers. There is a possibility that a gap may be formed between the spacer and the spacer, and the object to be treated may be clogged in the gap, so that the object to be treated cannot be easily cut.

Furthermore, if the corners on both sides of the blade edge of the blade 5a are rounded to prevent damage as described above, a substantially triangular shape is formed between the rounded portion and the outer peripheral surface of the spacer 6 and both sides of the blade edge of the rotary cutter 5. Gaps are formed. Therefore, for example, when cutting a rubber material, a wire, or the like, the object to be processed is not cut in the gap and the objects to be processed after the cutting process are continuous, or the object is clogged in the gap. The problem arises.

In order to solve this problem, the blade 5a in each rotary cutter group is rounded on both sides of the blade edge, and the spacer 6 is complemented with a portion corresponding to both sides of the blade edge of the blade 5a. It is also conceivable to configure it so as to have a desired shape.

However, as shown in an enlarged view of the spacer 6 in FIG. 11, when the portion 30 corresponding to the both sides of the blade edge of the spacer 6 has a shape complementary to both sides of the blade edge, the strength of the portion becomes extremely weak, As shown in FIG. 12, there was a risk of chipping out the corresponding portions 30 on both sides of the blade edge of the spacer 6.

The present invention has been made in view of the above problems, and provides a cutting processing device capable of reliably shredding an object to be processed and having higher strength than in the case where a rotary cutter and a spacer are manufactured separately. It is an object.

The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

[Means for Solving the Problems] The outline of a typical invention disclosed in the present application is as follows.

That is, the present invention provides a rotary cutter group configured by arranging a plurality of rotary cutters having a plurality of blades arranged in the circumferential direction at predetermined intervals in the axial direction of the rotary shaft via spacers. At least a pair is provided, the rotary cutter of one rotary cutter group forming a pair is configured to be fitted between adjacent rotary cutters of the other rotary cutter group, in a cutting treatment device used for various waste treatment, A plurality of rotary cutters in each of the rotary cutter groups are integrally formed via the spacers.

Further, the entire blade edge of the blade of the rotary cutter contacts the outer peripheral surface of the spacer in the opposing rotary cutter group, the portion corresponding to the blade edge both sides of the blade in the spacer to the blade edge both sides It is configured to have a complementary shape.

[Operation] According to the above-described means, since the plurality of rotary cutters in each rotary cutter group are integrally formed, the strength is increased as compared with the case where the spacer and the rotary cutter are manufactured one by one and combined with each other. .

Furthermore, since a plurality of rotary cutters in each rotary cutter group are integrally configured via the spacers, no gap is formed between the rotary cutters and the spacers in the integrated portion.

Further, since the entire cutting edge of the blade of the rotary cutter is configured to abut the outer peripheral surface of the spacer in the opposed rotary cutter group, not only the shearing action between the side surfaces of the spacer and the rotary cutter, but also the blade The cutting process is also performed by the interaction between the blade edge and the spacer.

In addition, when forming a roundness on both sides of the blade edge of the blade and configuring the corresponding portion of the spacer on both sides of the blade edge to have a shape complementary to the both sides of the blade edge, the spacer and the rotary cutter are integrated. Since it is formed in the shape, it is easy to process the complementary shape. That is, when manufacturing the spacer (the receiving portion of the rotary cutter), a complementary shape can be easily formed by forming a rounded boundary between the rotary cutter and the adjacent spacer. Therefore,
It is possible to surely cut the object to be processed finely without causing the chipped state 32 as shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view of the rotary cutter group of the first embodiment of the cutting apparatus according to the present invention, FIG. 2 is a cross-sectional view of the rotary cutter group of FIG. 1, and FIG. 3 is the present invention. FIG. 4 is a schematic plan view of a first embodiment of the cutting apparatus according to the present invention, FIG. 4 is a front view of constituent units in the rotary cutter group of FIG. 1, and FIG. 5 is a front view of constituent units in the rotary cutter group of FIG. , FIG. 6 is a side view of each structural unit.

The cutting apparatus of this embodiment has a conventional structure (see FIGS. 8 to 10).
1) is different from that shown in FIGS. 1 and 2 in that the rotary cutters 5 in the rotary cutter groups A and B are
Is integrally formed.

That is, as shown in FIGS. 1 and 2, two adjacent rotary cutters 21 and 21 and a spacer 26 sandwiched between them.
And a spacer 26 that is half the thickness (t / 2) of the regular spacer 26 and is provided on both sides of the rotary cutter group 21, 21 respectively.
a and 26b are integrally configured to form a basic constituent unit 35 of the rotary cutter group. The structural unit 35 as described above is externally fitted to the rotary shafts 3 and 4 in a number corresponding to one cutting region. At that time, the spacer 26a and the spacer 26b are arranged side by side, and the spacer 26 having a regular thickness (t) is constituted by the both spacers 26a and 26b.

The second difference of the cutting apparatus of this embodiment from that of the conventional cutting apparatus (FIGS. 8 to 10) is that the cutting processing apparatus shown in FIGS.
As shown in the figure, the blades 22 and 23 in the cutter groups A and B
(See FIG. 5) The both edges of the blade edge are rounded (rounded), and the portion of the spacer 26 corresponding to the both edges of the blade 22, 23 is opposite to both edges of the blade 22, 23. That is, the shape is complementary.

That is, in this cutting processing device, the rotary cutter 21
The outer diameters of the spacers 26, 26a, 26b are larger than the outer diameters of the spacers 26, 26a, 26b.
The shape of the ends of the
The shape of the part corresponding to both edges of the blade edge) is blade 22,2
It is configured so as to be in a complementary relationship with the roundness provided on both side edges of the blade edge of 3, when the both side edges of the blade edges of the blades 22 and 23 contact the facing spacers 26, 26a, 26b, the 1
As shown in FIG. 2 and FIG. 2, the rounded portions of the blades 22 and 23 are configured to abut against the corresponding portions of the rotary cutter 21 on both sides of the cutting edge so that no gap is formed therebetween. There is.

The third difference of the cutting type processing apparatus of this embodiment from the conventional one is that, as shown in FIGS. 4 to 6, a blade 22 having a small cutting edge surface 22a is provided on the outer periphery of the rotary cutter 21.
The point is that the blades 23 having large cutting edge surfaces 23a are arranged alternately.

That is, in the rotary cutter 21 of the embodiment, the central angles of standing by the blades 22 and 23 are changed (θ1, θ2).
The rear rear surface 22b is formed to be larger than the rear rear surface 23b of the blade 23. Further, in this cutting apparatus, the blades 22 and 23 of the rotary cutter 21 are
The cutting edge is formed so as to be inscribed in an imaginary cylinder that is circumscribed by the spacers 26, 26a, 26b. Furthermore, the cutting apparatus of the embodiment is different from the conventional one in that a cylindrical metal is provided inside the bearing 2. Here, the tubular metal has a function of complementing the bearing action of the bearing 2, and
It has a function of preventing dust and the like from adhering to the bearing 2.

Other configurations are substantially the same as those of the conventional cutting apparatus shown in FIG.

Therefore, the same elements are given the same reference numerals as those in FIG. 8 and their explanations are omitted.

Next, the operation of the cutting apparatus configured as described above will be described.

For example, when an object to be processed having a different size is introduced, a relatively small object to be processed is a cutting edge surface 23a, 2 of the blades 23, 22 following the blades 22, 23 while being placed on the rear rear surfaces 22b, 23b.
2a is drawn between the rotary cutter groups A and B, by the interaction between the blades 22 and 23 in the rotary cutter groups A and B and the interaction between the blades 22 and 23 and the spacer 26 outer peripheral surface,
Be cut off. On the other hand, a large object or a deformed object (for example, curled metal scrap) that floats on the rear surface 23b of the blade 23 and cannot be drawn between the rotary cutter groups A and B by the cutting edge surface 22a is , Rear rear 22 of blade 22
While being placed on b, it is conveyed to the cutting position by the large cutting edge surface 23a and cut by the interaction of the rotary cutter groups A and B.

According to the cutting apparatus of the embodiment configured as described above, the following effects can be obtained.

That is, since the two rotary cutters 21 in each of the rotary cutter groups A and B are integrally formed via the spacer 26, it is not necessary to prepare a special spacer. Therefore, as compared with the case where the spacer 26 and the rotary cutter 21 are manufactured one by one, and they are combined, the management of parts is easy and
Assembling becomes that much easier.

In addition, the rotary cutter 21 is substantially widened,
The strength of the rotary cutter itself is increased, and it is possible to prevent cracking or damage during the cutting process.

Further, according to this cutting processing device, the blades 22 and 23
Since the shape of the spacer 26, which is a portion for receiving the blade edges 22 and 23 of the blade edge, has a complementary relationship, a gap is formed on both sides of the blade edges of the blades 22 and 23 during the cutting process of the workpiece. By the action of disappearing, the uncut object can be prevented from falling, and the processed object can be surely cut into fine pieces at both ends of the blade edges of the blades 22 and 23.

In addition, according to this cutting processing device, two different sizes are used.
Uses a rotary cutter 21 with different types of blades 22 and 23 on the outer circumference, so that large and small or deformed workpieces can be cut reliably and efficiently, and the motor 31, shafts 3, 4 etc. can be easily cut without applying too much load. can do.

This effect can be obtained even when three or more types of blades are used.

 Next, a second embodiment of the present invention will be described.

FIG. 7 is a plan view of a rotary cutter group of a second embodiment of the cutting apparatus according to the present invention.

In this embodiment, the number of rotary cutters 21 integrated in the structural unit 35 of the embodiment shown in FIG. 1 is changed from 2 to 4, respectively. In the case of this embodiment, there is an advantage that the number of constitutional units for constituting the cutting region of a predetermined length is half that in the case of FIG.

As a matter of course, it is possible to make the structural unit very large and configure the cutting region with one structural unit.

Although the invention made by the inventor has been specifically described based on the embodiment, the invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the scope of the invention. Nor.

For example, it goes without saying that the present invention can also be applied to a cutting processing apparatus having a rotary cutter 21 in which blades having the same shape are arranged in the circumferential direction as in the conventional case, and the same applies to a cutting processing apparatus having three rotary shafts. Clearly applicable to

[Effects of the Invention] The effects obtained by the typical one of the inventions disclosed in the present application will be briefly described as follows.

That is, the present invention is a rotary cutter group configured by arranging a plurality of rotary cutters in which a plurality of blades are arranged in the circumferential direction at predetermined intervals in the direction of the axis of the rotary shaft via spacers. Is provided in at least one pair, the rotary cutter of one rotary cutter group forming a pair, in the cutting processing device used for various waste treatment configured to be fitted between the adjacent rotary cutters of the other rotary cutter group, Since a plurality of rotary cutters in each rotary cutter group are integrally formed via the spacers, it is easier to manage the parts as compared with the case where the spacers and the rotary cutters are manufactured one by one and combined with each other. At the same time, the assembly becomes so easy.

In addition, since the rotary cutter is made up of multiple integral parts via spacers, the rotary cutter is substantially wider, which increases the strength of the rotary cutter itself, causing cracks or damage during cutting. Can be prevented.

Further, due to a dimensional error between the rotary cutter and the spacer and a load acting on the rotary cutter at the time of cutting, no gap is generated between the rotary cutter and the spacer in the integrated portion, so that the object to be processed is left in the gap portion. It is less likely that the objects to be processed after cutting will not be cut without being cut, and that the objects to be processed will not be clogged in the gaps.

Further, since the entire cutting edge of the blade of the rotary cutter is configured to abut the outer peripheral surface of the spacer in the opposed rotary cutter group, not only the shearing action between the side surfaces of the spacer and the rotary cutter, but also the blade The cutting of the object to be processed is also performed by the interaction between the blade edge and the spacer.

In addition, when forming a roundness on both sides of the blade edge of the blade and configuring the corresponding portion of the spacer on both sides of the blade edge to have a shape complementary to the both sides of the blade edge, the spacer and the rotary cutter are integrated. Since it is formed in the shape, it is easy to process the complementary shape. That is, when manufacturing the spacer (the receiving portion of the rotary cutter), a complementary shape can be easily formed by forming a rounded boundary between the rotary cutter and the adjacent spacer. Therefore,
It is possible to surely cut the object to be processed finely without causing the chipped state 32 as shown in FIG.

[Brief description of drawings]

FIG. 1 is a plan view of a rotary cutter group used in a first embodiment of a cutting apparatus according to the present invention, FIG. 2 is a cross sectional view of the rotary cutter group, and FIG. 3 is a cutting according to the present invention. FIG. 4 is a schematic plan view of the first embodiment of the processing apparatus, FIG. 4 is a front view of constituent units in the rotary cutter group of FIG. 1, and FIG. 5 is a front view of constituent units in the rotary cutter group of FIG. 6 is a side view of the structural unit, FIG. 7 is a plan view of a rotary cutter group used in a second embodiment of the cutting processing apparatus according to the present invention, and FIG. 8 is a schematic plan view of a conventional cutting processing apparatus. FIG. 9 is a front view of a rotary cutter group in a conventional cutting processing apparatus, FIG. 10 is a plan view of a rotary cutter group in a conventional fine cutting processing apparatus, and FIG. 11 is a spacer having a complementary shape. FIG. 12 is an enlarged view showing a state where the leading edge of the spacer is missing. 3,4 …… Shaft, 26 …… Spacer, 26a, 26b …… 1/2 Spacer, 21 …… Rotary cutter, 22,23 …… Blade, 35…
… Structural units, A, B …… Rotary cutter group.

Claims (2)

(57) [Scope of utility model registration request] 1. A rotary cutter group constituted by arranging a plurality of rotary cutters having a plurality of blades arranged in a circumferential direction at predetermined intervals in the axial direction of a rotary shaft via spacers. A cutting treatment device used for various waste treatments, wherein a pair of rotary cutters of one rotary cutter group forming a pair are configured to be fitted between adjacent rotary cutters of the other rotary cutter group, A cutting processing device, wherein a plurality of rotary cutters in each rotary cutter group are integrally formed via the spacer. 2. The entire cutting edge of the blade of the rotary cutter,
It is configured to abut on the outer peripheral surface of the spacer in the opposed rotary cutter group, and to form a portion of the spacer corresponding to both sides of the blade edge of the blade in a complementary shape to both sides of the blade edge. The cutting apparatus according to claim 1.