JPH06320038A - Cutting treatment device - Google Patents

Abstract

PURPOSE:To provide the cutting treatment device capable of surly shredding sheet-like charged materials as well by specifying the blade height, radius of collars and radius of blade edge circles of blades of respective rotary cutters so as to satisfy prescribed relations. CONSTITUTION:This cutting treatment device has at least a pair of the rotary cutters 3 constituted by alternately arranging disks 21 arranged with plural blades 22 along a circumferential direction and collars 23 of the diameter smaller than the diameter of the disks 21 in the axial line direction of the axis of rotation. A pair of these rotary cutters 3 are so constituted that the disks 21 of the cutters 3 fit each other and that the blade edge circle of the blades of the disks 21 of the one rotary cutter 3 circumscribes the collar 23 of the other rotary cutter 3. The charged materials are withdrawn between a pair of the rotary cutters 3 through rotation of a pair of the rotary cutters 3, by which the cutting treatment is executed. The respective rotary cutters 3 are so formed that the blade height (x) of the blades 22 of the rotary cutters 3, the radius (y) of the collars 23 and the radius (Z) of the blade edge circles of the blades 22 satisfy the relation 2x<=z-y.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting apparatus for finely cutting metal scraps and general wastes produced in various factories.

[0002]

2. Description of the Related Art This type of cutting apparatus includes a pair of rotary shafts rotatably supported by a housing, a pair of rotary cutters fixed to the rotary shafts, and a motor for rotating both rotary shafts. The rotary cutter is rotated in the feeding material drawing direction by the rotational power of the motor, and the feeding material is cut into pieces by the shearing action of the disks.

[0003]

By the way, when cutting general waste or industrial waste with this type of cutting apparatus, it is common to perform cutting in a state in which various kinds of materials are mixed. Target. in this case,
If a sheet-shaped input material, for example, a vinyl sheet or paper, is mixed in the input material, as shown in FIG. 4, the sheet-shaped input material 50 has a worm-eating effect only on the portion corresponding to the blade tip. There is an inconvenience that the holes 51 only open and cannot be shredded.

The present invention has been made in order to solve such problems, and an object thereof is to provide a cutting apparatus capable of surely shredding even a sheet-like charged material.

[0005]

In the cutting apparatus of the present invention, a disk having a plurality of blades arranged in the circumferential direction and a collar having a diameter smaller than that of the disk are arranged alternately in the axial direction of the rotating shaft. Is provided with at least one pair of rotary cutters, the disks in the pair of rotary cutters are fitted to each other, and the blade edge circle of the disk in one of the rotary cutters is circumscribed to the collar of the counterpart rotary cutter. In the cutting apparatus configured to draw the input material between the pair of rotary cutters through the rotation of the pair of rotary cutters to perform the cutting processing of the input material, the blade length (x ), The radius of the collar (y), the radius of the blade edge circle (z) is 2x
The relationship of ≦ z−y is satisfied.

[0006]

According to the above-mentioned means, the blade of each rotary cutter is fitted deeper than the blade groove of the mating disc, so that the input material always undergoes shearing action between the blades and the blade edge of the blade of the rotary cutter. Since the charging material is also cut between the collar and the opposite color, the charging material can be shredded and the sheet-shaped charging material can also be shredded effectively.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A cutting apparatus according to an embodiment of the present invention will be described below with reference to FIGS. 1 is a plan view of the cutting device, and FIG. 2 is a side view of the cutting device. As shown in both figures, the cutting apparatus includes a pair of rotary shafts 2 and 2 rotatably supported by a housing 1, and a pair of rotary cutters 3 and 3 fixed to the rotary shafts 2 and 2, respectively. , And a motor 4 for rotating both rotary shafts 2, 2. The motor 4 is connected to the rotary shaft 2 via a speed reducer 5 and the like, and is adapted to rotate in the reverse direction when the rotary shaft 2 receives a load of a certain level or more. That is, the motor 4 includes an overload detection device 6 and a drive control device 7.
(Both constitute a rotation drive device) is provided side by side, and when a drive current of a predetermined level or more flows through the motor 4,
This is detected by the overload detection device 6, an overload signal is input to the drive control device 7, and the motor 4 is rotated in the reverse direction for a certain period of time.

The rotational power of the motor 4 is reduced by the speed reducer 5 and transmitted to the sprocket 8 of the speed reducer 5, and is transmitted from the sprocket 8 to the sprocket 10 fixed to one of the rotating shafts 2 via the chain 9. It On the other hand, a spur gear 11 is fixed to the outer end of the rotary shaft 2 on the side opposite to the sprocket 10, and the other rotary shaft 2 also has a spur gear 12 meshing with the spur gear 11 and having the same number of teeth. It is fixed. Therefore, the sprocket 1 of the one rotating shaft 2
The rotary power input from 0 is transmitted to the other rotary shaft 2 via both spur gears 11 and 12, and the rotary cutters 3 and 3 attached to the rotary shafts 2 and 2 are indicated by arrows in the drawing. Rotate in the direction (see FIG. 2), the opposite direction.

The rotary shafts 2 are rotatably supported by the housing 1 via bearings 13 on both sides of the rotary cutter 3 and are arranged in parallel with each other. A cylindrical metal 14 is provided between the rotary cutter 3 and each bearing 13,
The input material is prevented from falling from this part. Although not shown, a hopper is provided above the side view shown in FIG.
Tray is provided in the lower part, and the input material is input from the hopper and guided between the rotary cutters 3 and 3. After being finely cut by the rotary cutters 3 and 3, it is dropped on the tray. ing.

As shown in FIG. 3, the rotary cutter 3 is composed of a disk 21 having a plurality of blades 22 as cutting blades formed on the outer peripheral surface thereof, and a collar 23 having a smaller diameter than the disk 21. There is. Disk 21 and color 23
Is fixed to each rotary shaft 2 portion in the housing 1 in a state where a plurality of them are alternately in contact with each other in the axial direction. Here, the blade length (x) of the blade 22 of the rotary cutter 3, the radius (y) of the collar 23, and the radius (z) of the cutting edge circle of the blade 22.
Is configured to satisfy the relation of 2x ≦ z−y, and both rotary cutters 3 and 3 are fixed to the cutting edge circle of the disk 21 fixed to one rotating shaft 2 and the other rotating shaft 2. The collar 21 is arranged so as to be circumscribed. That is, the rotary cutters 3 and 3 are arranged at positions where the blade edge of the rotating blade 22 and the collar 23 are in contact with each other, and the blade edges of the blades 22 of the rotary cutters 3 are in point contact with each other. The point contact state is configured to continuously shift from one end of the collar 23 to the other end.
The rotating cutters 3 and 3 are arranged such that the side surfaces of the disk 21 are in contact with each other. In other words, in this embodiment, one rotating shaft 2 has six discs 21 and five collars 23, and the other rotating shaft 2 has five discs 2.
The 1 and 6 collars 23 are mounted alternately, respectively, and these are rotated in the opposite directions so as to mesh with each other. The rotations of the rotary cutters 3 and 3 in the opposite directions are
As shown in FIG. 2, the input material input from above is in the direction of being drawn into the meshing portions of the rotary cutters 3, 3.

As shown in FIG. 3, six blades 21 are formed on the outer peripheral portion of the disk 21 so as to project in a sawtooth shape, and the disk 21 catches an object to be cut at this blade 22. Between the adjacent collars 23, and the blades 22 of the adjacent disks 21 are mainly drawn.
Cut by shearing each other. On the other hand, the disk 21 and the collar 23 are fitted to the respective rotary shafts 2 at their inner peripheral portions, and are keyed to the rotary shafts 2 (not shown). As a result, the disc 21 and the collar 23 can be properly attached to and detached from the rotary shaft 2 and can be exchanged.

Further, the blades 22 of the five or six disks 21 attached to the one rotating shaft 2 are attached with the phases of the blades 22 being circumferentially shifted, and torque fluctuation during rotation is small. It is supposed to be.

Reference numeral 15 in the drawing denotes a comb-teeth-shaped fixed blade.

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

That is, the blade 22 of each rotary cutter 3
Fits deeper than the blade groove of the mating disc 21, so that the input material is always subjected to a shearing action between the blades, and the input material is also applied between the blade edge of the blade 22 of the rotary cutter 3 and the collar 23 facing it. Since the material is cut, the input material can be shredded, and the sheet-shaped input material can also be shredded effectively.

Although the embodiments of the present invention made by the present inventor have been described above, the present invention is not limited to such embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say.

[0017]

As described above, according to the cutting apparatus of the present invention, a disk having a plurality of blades arranged in the circumferential direction and a collar having a diameter smaller than the disk are alternately arranged in the axial direction of the rotary shaft. At least one pair of rotary cutters arranged and arranged, the disks in the pair of rotary cutters are fitted to each other, and the blade circle of the blade of one of the rotary cutters circumscribes the collar of the counterpart rotary cutter. In the cutting apparatus configured to draw the input material between the pair of rotary cutters through the rotation of the pair of rotary cutters to perform the cutting processing of the input material, the blade length of the blade of each rotary cutter (X), the radius of the collar (y), the radius of the blade edge circle (z) is 2
Since the relationship of x ≦ z−y is satisfied, the input material can be shredded, and the sheet-shaped input material can also be shredded effectively.

[Brief description of drawings]

FIG. 1 is a plan view of a cutting device according to an embodiment of the present invention.

FIG. 2 is a cutting side view of the cutting processing apparatus according to the embodiment of the present invention.

FIG. 3 is a front view around a rotary cutter.

FIG. 4 is a plan view of a sheet-shaped charging material cut by a conventional cutting apparatus.

[Explanation of symbols]

 1 Housing 2 Rotating shaft 3 Rotating cutter 21 Disc 22 Blade 23 Color

Claims (1)

[Claims] 1. At least one pair of rotary cutters, each disk comprising a plurality of blades arranged in a circumferential direction and collars having a diameter smaller than the disks are alternately arranged in an axial direction of a rotary shaft, Discs in the pair of rotary cutters are fitted to each other, the blade edge circle of the disc in one of the rotary cutters is configured to circumscribe the collar of the counterpart rotary cutter, and the pair of rotary cutters is rotated to rotate the pair of rotary cutters. In a cutting device configured to draw an input material between rotary cutters and perform a cutting process of the input material, a blade length (x) of a blade of each rotary cutter, a radius (y) of a collar, and a blade edge of the blade. The cutting processing device, wherein the radius (z) of the circle satisfies the relationship of 2x ≦ z−y.