JPH0546804Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cutting device for cutting metal scraps generated in various factories, and particularly relates to a cutting device equipped with a rotating cutter.

[Prior Art] Conventionally, as a technique in this type of field, those shown in FIGS. 10 to 12 are known. The outline will be explained below based on the figure.

In FIG. 10, reference numeral 1 represents a frame, and this frame 1 has two rotating shafts 3, 4 parallel to each other, bearings 2,...
Supported through... Each of the rotary shafts 3, 4 includes a disk 5 in which a plurality of blades 5a (FIG. 11) are arranged along the circumferential direction in a portion extending within the frame 1.
Collars 6 of smaller diameter are alternately externally supported in the axial direction, and each constitutes a rotary cutter A, B as a whole.

In these rotary cutters A and B, the disk 5
The thickness of the collar 6 is equal to that of the collar 6, and when attached to the frame 1, the adjacent discs 5, 5 of one rotary cutter are
The disk 5 of the other rotary cutter is fitted in between. Also, this rotating cutter A,
In B, the distance between the shafts 3 and 4 is set to be 1/2 the sum of the inner diameter of the disk 5 and the inner diameter of the collar 6. As a result, when the rotary cutters rotate, the cutting edge of the blade 5a of the disk 5 in one rotary cutter comes into contact with the outer peripheral surface of the collar 6 in the other rotary cutter. In addition, in this cutting processing device, as shown in FIG. 12, the edges of the cutting edge are generally rounded on both sides. This is because if the corners on both sides of the cutting edge are sharp, the blade 5a is likely to be damaged.

Furthermore, spur gears 7 and 8 that mesh with each other are attached to one ends of the rotating shafts 3 and 4 that protrude outward from the frame 1, respectively. Further, a motor 10 is connected to the other end of the rotating shaft 3 that projects outward from the frame 1. The rotary cutter A is rotationally driven by the motor 10, and the rotary cutter B is further rotationally driven in the opposite direction to the rotary cutter A through the spur gears 7 and 8.

Incidentally, in the frame 1, comb-shaped fixed blades 12, 12 are disposed outside the disk 5 and the collar 6, and are in contact with both the cutting edge of the blade 5a of the disk 5 and the collar 6.
Further, in this cutting processing apparatus, although not shown, a hopper is attached to the frame 1.

Next, the disk 5 of the conventional cutting device configured as described above will be explained in more detail using FIG. 11.

On the outer periphery of the disk 5, a plurality of blades 5a having the same shape are arranged along the circumferential direction. The cutting edge surface 14a of each blade 5a is formed to coincide with the radial surface of the disk 5. Further, the extending direction of the cutting edge at the tip of the blade 5a in this disc 5 coincides with the extending direction of the generatrix of the disc 5. the result,
When the cutting edge of the blade 5a of the disc 5 in one rotary cutter comes into contact with the outer circumferential surface of the collar 6 in the other rotating cutter, the entire cutting edge of the blade 5a contacts the collar 6 facing the opposite collar 6, as shown in FIG. simultaneously abuts against the outer circumferential surface of the

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

When the motor 10 is driven, the rotational force of the drive shaft is first transmitted to the rotating shaft 3 and the rotating cutter A.
is rotated, and is further transmitted to the rotating shaft 4 through the spur gears 7 and 8, thereby rotating the rotating cutter B. In this case, the rotating directions of the rotary cutters A and B are opposite to each other, and the disc 5
The input material is rotated by the cutting edge 14a of the cutter A,
This is the direction in which it can be drawn between B (11th
(see arrow in figure). Rotating cutter A,
Let it be the positive direction of B.

Here, when the input material is put into the hopper, the input material is loaded on the rear surface 14b of the blade 5a and is drawn between the rotating cutters A and B by the succeeding cutting surface 14a, and the main Rotating cutter A,
It is cut into a predetermined size by the shearing action between the blades 5a at B. The material thus cut is discharged downward through the space between the disk 5 and the collar 6 formed as the rotary cutters A and B rotate.

Note that the cutting of the input material is also achieved by the interaction between the blade 5a and the collar 6 facing it.

That is, as shown in FIG. 11, for example, when the cutting edge of the blade 5a of the disk 5 in the rotary cutter A comes into contact with the collar 6 in the rotary cutter B,
When a portion of the input material is present at the cutting edge position of the blade 5a, the input material is pushed off by the blade 5a of the rotary cutter A and the collar 6 of the rotary cutter B in this cutting processing device.

[Problems to be solved by the invention] However, in the cutting processing device having such a configuration, when cutting the input material, the input material is drawn between the pair of rotating cutters A and B. Therefore, the input material is likely to become clogged, especially when cutting curled cutting waste. If the input materials become clogged, the rotation of the motor 10 may be inhibited or the motor 10 may be damaged.

Therefore, in the past, it was necessary for the operator to constantly monitor the state of the cutting process, and if the input material became clogged, it was necessary to immediately stop the motor 10 and remove the jam. On the other hand, if a motor 10 with a large rated current is used to prevent damage to the motor 10 due to rotation inhibition, clogging will be reduced, but power consumption will increase and unreasonable force will be applied to the rotating cutters A and B. There was a risk that the blade 5a would be damaged. Furthermore, even if such a motor 10 with a large rated current is used, if the input material to be cut contains hard foreign matter, the rotation of the motor 10 may be inhibited by the input material. Otherwise, the blade 5a may be damaged.

Therefore, if rotation of the motor 10 is inhibited or the blade is damaged, it is necessary to manually repair or remove it.

The present invention was devised in view of these problems, and an object of the present invention is to provide a cutting device that can easily prevent clogging and automatically remove foreign matter.

The above and other objects and novel features of this invention will become clear from the description of this specification and the accompanying drawings.

[Means for Solving the Problems] An overview of typical devices disclosed in the present application is as follows.

That is, the rotary cutter includes at least one pair of rotary cutters configured by alternately arranging a plurality of blades arranged in the circumferential direction and collars having a smaller diameter than the disk in the axial direction of the rotary shaft. A cutting method in which the disks of a pair of rotary cutters are configured to fit into each other, and the input material is drawn between the pair of rotary cutters through rotation of the rotary cutter by a rotation drive device, and the input material is cut. In the processing device, the rotary cutters are arranged so that the input material can be drawn horizontally between the pair of rotary cutters,
A rotary drive device capable of selectively rotating the rotary cutter in a forward direction and a reverse direction is used as the rotary drive device, and the pair of rotations is used so as to drop foreign matter present on the retracting side of the rotary cutter. A swinging device capable of swinging the pair of rotating cutters about an axis parallel to the axis of the cutters is attached, and a detection device for detecting a load condition applied to the rotating cutters, and a signal from the detection device. A control device for controlling the rotary drive device and the rocking device according to the above is attached.

[Function] According to the above means, the detection device works to detect the load condition applied to the rotary cutter, and the control device controls the rotation of the rotary cutter according to the load condition applied to the rotary cutter, and controls the swinging device. It works to separate foreign substances from regular input materials. Therefore, since only the proper input material is cut, the rotary drive device and the blade can be protected, and the workability and safety thereof can be improved.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows a schematic configuration diagram of a cutting processing system to which an embodiment of the cutting processing apparatus according to the present invention is applied.
FIG. 2 shows a side view of the cutting device shown in FIG. 1.

First, the differences between the cutting apparatus of the embodiment and the conventional cutting apparatus (FIGS. 10 to 12) will be listed and each will be explained in detail.

(1) This cutting processing device is connected to a feeder 41 that transports the input material laterally. Therefore, in the cutting processing apparatus of this embodiment, as shown in FIG.
are arranged so as to be stacked vertically.

Here, to explain the feeder 41, this feeder 41 rotates a spiral feeding plate 43 arranged around a rotary shaft 42 by a feeder motor 44, and a belt conveyor 4
It is configured such that the input materials falling from 5 to the base end side can be sequentially sent to the free end side (terminus side).

On the other hand, a cutting device connected to the free end side of the feeder 41 pulls the input material sent to its terminal position by the feeder 41 between the rotary cutters A and B, cuts it, and cuts it. It is configured to discharge the processed material to the back of the cutting box 46.

(2) In addition, in the cutting processing device of this embodiment, the second
As shown in detail in the figure, the rotary cutters A and B are driven to rotate in forward and reverse directions as appropriate by a motor 31 via a gear mechanism 37.

It goes without saying that the two motors 31 may be used to rotate the rotary cutters A and B independently.

(3) Furthermore, in the cutting device of this embodiment, the cutting box 46 itself, which houses the main parts of the cutting device, is swingable. It is designed so that it can be directed downward.

That is, the cutting processing box 46 is equipped with the swinging device 4.
7 is attached. That is, a swinging sector gear 48 is attached to the back of the box 46, and a gear 50 attached to a drive shaft of a swinging motor 49 is meshed with this sector gear 48. The box 46 can be rotated around a rotating shaft 51 by the driving force of the swing motor 49.

The reason for this is to separate foreign substances from regular input materials. In other words, this is to cause hard foreign matter mixed in the regular input materials to fall into the foreign matter container 71 arranged below.

(4) In addition, in the cutting processing device of this embodiment, the second
As shown in the figure, the load conditions of the rotary cutters A and B are detected by a detection device 32.

Here, as the detection device 32, for example, a rotation detection device that can sequentially detect the amount of rotation of the rotary cutter within a predetermined period of time is used.

(5) Furthermore, the above-mentioned cutting processing device includes a detection device 3.
Based on the signal from 2, it is possible to distinguish between regular input material and foreign matter, and the motors 31, 44, 49 are activated accordingly.
A control device 33 is provided to control the.

This control device 33 operates as follows when hard foreign matter becomes clogged. In other words, if the change (decrease) in the amount of rotation of the rotary cutters A and B within a predetermined period of time detected by the detection device 32 is steep, there is a hard foreign object (that cannot be cut) between the rotary cutters A and B. It is determined that the motor 31 and the feeder motor 44 are clogged, and the operation of the motor 31 and feeder motor 44 is immediately stopped. Note that at this time, the feeder motor 44 may be rotated in the reverse direction. Then, the swing motor 49 is driven to swing the cutting box 46 as shown in FIG. At this time, the motor 31 is rotated in the opposite direction to cause the foreign matter to fall downward. Thereafter, the swing motor 49 is reversely rotated to return the cutting box 46 to its original position. Then, the motors 31 and 44 are rotated forward again to cause the rotary cutters A and B to cut the input material.

Further, the control device 33 operates as follows when the regular input materials become clogged. In other words, at this time, since the rotation amount of the rotary cutters A and B decreases relatively slowly within a predetermined period of time, it is determined that the input material that can be cut (regular input material) is clogged, and the motor 31 is activated for a predetermined period of time. (e.g. 1 second to 3 seconds)
The motor 31 is rotated in the opposite direction to clear the blockage, and then the motor 31 is rotated in the forward direction again to cut again. Although it is not particularly necessary to rotate the feeder motor 44 in the reverse direction at this time, the feeder motor 44 may be rotated in the reverse direction.

(6) In addition, in the cutting processing device of the above embodiment, the fourth
As shown in the figure and Fig. 5, the rotary cutter A,
The cutting edge edges of the blades 22 and 23 (see FIGS. 3 and 4) in B are rounded at both ends, while the parts (receiving parts) in which the blades 22 and 23 in rotary cutters A and B are fitted
The shapes of the blades 22 and 23 are complementary to the cutting edges of the blades 22 and 23.

That is, the blades 22, 2 of this cutting processing device
3, as shown in FIGS. 4 and 5, similar to the blade in the conventional cutting processing device,
Both ends of the cutting edge are rounded to prevent damage to the blades 22, 23. On the other hand, in this cutting processing device, the disk 21 is configured such that the thickness on the proximal end side is greater than the thickness on the distal end side. Specifically, in the disk 21, the thickness of the portion that abuts the collar 6 is greater than the thickness of the portion that protrudes radially outward from the collar 6. The shape of the part where the thickness changes (step part) is the blade 22,
It is configured to have a complementary relationship with the roundness provided on the blade 23, and when the cutting edge edges of the blades 22 and 23 come into contact with the opposing collar 6, the fourth
As shown in FIG. 5, the blade 2
The rounded portions 2 and 23 are in contact with the stepped portion of the disk 21, so that no gap is created between them.

This ensures that the input material is shredded.

(7) Furthermore, in the cutting processing apparatus of the above embodiment, as shown in FIGS.
and blades 23 having large cutting surfaces 23a are arranged alternately.

That is, in the disk 21 of the embodiment, the central angles of the blades 22 and 23 are changed (θ ₁ , θ ₂ ), and the size of the rear surface 22b of the blade 22 is larger than the size of the rear surface 23b of the blade 23. It is also designed to become larger. Further, in this cutting processing device, the cutting edges of the blades 22 and 23 of the disk 21 are formed so as to be inscribed in a virtual cylinder circumscribing the collar 6.
Then, the generatrix direction of this virtual cylinder and the blade 2
The extending directions of the cutting edge edges of the blades 2 and 23 are made to coincide with each other. As a result, the blades 22, 23
At the same time, the load applied to the rotary cutters A and B is reduced, and clogging of the input material between the rotary cutters A and B is reduced. Note that the direction of the generatrix of the virtual cylinder and the direction of extension of the cutting edge edges of the blades 22 and 23 do not necessarily have to coincide.

The above points (1) to (7) are different from conventional cutting processing devices.

In other respects, the structure is substantially the same as that of the conventional cutting apparatus shown in FIGS. 10 to 12. Therefore, for the same element, the 10th
The same reference numerals as those in FIGS. 12 to 12 are used, and the explanation thereof will be omitted.

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

In the cutting processing apparatus of this embodiment, the load state applied to the rotary cutters A and B is detected by the detection device 32 during the cutting processing of the input material.

First, in the case of regular input material cutting processing, the input materials are sequentially cut. However, if the regular input material becomes clogged for some reason, the amount of rotation within a predetermined period of time decreases, but the decrease is slow, so in this case, control from the control device 33 to the motor 31 is performed. A signal is issued, and the motor 31 is once stopped and then rotated in the opposite direction for a predetermined period of time, whereby the clogged input material is once pushed back to the terminal end side of the feeder 41 and the clog is released. Then, after a predetermined period of time has elapsed, the control device 31
The motor 31 is rotated in the forward direction in response to a signal from the machine, and the input material is cut again.

On the other hand, if the cutter is clogged with hard foreign matter that cannot be cut, the amount of rotation within the predetermined time period will decrease sharply. In this case, control signals are issued from the control device 33 to the drive motors 31, swing motors 49, and feeder motors 44 of the rotary cutters A and B.
1. The feeder motor 44 stops rotating, and the swing motor 49 swings the cutting box 46 clockwise about the rotating shaft 51 as shown in FIG. Also, at this time, the motor 31 is rotated in reverse for a predetermined period of time. By that,
The foreign object falls downward due to the action of gravity. After the foreign matter has been removed, the swing motor 4
A control signal for reverse rotation is sent to the swing motor 4.
9 rotates in the direction of arrow C, and box 46 returns to its original position. At the same time, drive signals are sent from the control device 33 to the motor 31 and the feeder motor 44, respectively, so that the rotary cutters A, B and the feeder 41 resume normal operation.

In addition, during the above-mentioned cutting process, the relatively small input material is cut into the cutting surfaces 23a, 22a of the blades 23, 22.
The blades 22 and 2 of the rotary cutters A and B are easily drawn between the rotary cutters A and B.
The blades 22, 23 and the collar 6 are cut by the interaction between the blades 22, 23 and the collar 6. On the other hand, large input materials that cannot be drawn between the rotating cutters A and B by the cutting edge surface 22a of the blade 22 are transported to the cutting position by the cutting edge surface 23a of the blade 23, and are transferred between the rotating cutters A and B. cleaved by the interaction of

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

That is, according to this cutting processing device, the load condition of the rotary cutters A and B is constantly detected, and when a foreign object becomes clogged, the cutting processing box 46 is swung by the swinging device 49 to automatically remove the foreign object. After the foreign matter is removed, it automatically returns to its original position and resumes cutting, eliminating the need for human monitoring and foreign matter removal work, improving work efficiency and safety. This also prevents damage to the blades in the disk 21. In addition, during automatic removal work, the feeder 41
Since the machine is stopped, the input material will not fall downward uncut.

Furthermore, according to this cutting processing device, if the input material that can be cut (regular input material) becomes clogged, the rotation direction of the motor 31 is changed, so that the jammed input material can be prevented in advance. This can be prevented or canceled after the fact, and the input material can be cut efficiently without applying any load to the motor 31.

Further, according to this embodiment, the blade 22,
23 and the shapes of the parts that receive the blades 22, 23 are in a complementary relationship, so that no gaps are formed on both sides of the cutting edges of the blades 22, 23 during the cutting process of the input material. By this action, it is possible to prevent uncut materials from falling, and it is also possible to reliably cut the input material finely at both ends of the cutting edges of the blades 22 and 23.

Furthermore, according to this cutting processing device, since the disk 21 having two types of blades 22 and 23 of different sizes on the outer periphery is used, even large and small or deformed materials can be reliably cut efficiently, and the motor 31 , the shafts 3, 4, etc. can be easily cut without putting too much load on them. In addition,
This effect can be obtained even when three or more types of blades are used.

Although the invention made by the present inventor has been specifically explained based on the examples above, the present invention is not limited to the above-mentioned examples, and it is understood that various changes can be made without departing from the gist of the invention. Needless to say.

For example, in the above embodiment, the rotary cutters A and B are arranged so that their rotary shafts 3 and 4 extend horizontally, and the cutting box 46 is placed on a rotary shaft provided parallel to the rotary shafts 3 and 4. As shown in FIG. 9, the rotary cutters A and B are arranged so that their rotary shafts 3 and 4 extend in the vertical direction, and the cutting processing box 46 is rotated about the shaft 51. may be made to swing about a rotating shaft 51 provided perpendicularly to the rotating shafts 3 and 4 as a fulcrum.

Further, in the above embodiment, the box 46 is oscillated by a gear mechanism consisting of the sector gear 48 and the gear 50, but it may be oscillated by a hydraulic mechanism or a link mechanism.

Further, the detection device 32 is not limited to a rotation detection device, but may be a current meter or a pressure gauge, and the point is that the control means only needs to know the load acting on the rotating cutter when a foreign object is caught.

It goes without saying that the present invention can also be applied to a conventional cutting device having a disk 21 in which blades of the same shape are arranged in the circumferential direction.

In addition, the present invention can of course be used to treat meat, wood, fruit, empty cans, bottles, plastics, etc. in addition to metal scraps.

[Effects of the Device] The effects obtained by the typical devices disclosed in this application are briefly explained below.

That is, the rotary cutter includes at least one pair of rotary cutters configured by alternately arranging a plurality of blades arranged in the circumferential direction and collars having a smaller diameter than the disk in the axial direction of the rotary shaft. A cutting method in which the disks of a pair of rotary cutters are configured to fit into each other, and the input material is drawn between the pair of rotary cutters through rotation of the rotary cutter by a rotation drive device, and the input material is cut. In the processing device, the rotary cutters are arranged so that the input material can be drawn horizontally between the pair of rotary cutters,
A rotary drive device capable of selectively rotating the rotary cutter in a forward direction and a reverse direction is used as the rotary drive device, and the pair of rotations is used so as to drop foreign matter present on the retracting side of the rotary cutter. A swinging device capable of swinging the pair of rotating cutters about an axis parallel to the axis of the cutters is attached, and a detection device for detecting a load condition applied to the rotating cutters, and a signal from the detection device. A control device that controls the rotational drive device and the swinging device is attached to the machine according to the situation, so foreign substances that cannot be cut can be automatically removed in advance, and the blade is superior in workability and safety. It will also be possible to protect the

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of a cutting processing system to which an embodiment of the cutting processing device according to the present invention is applied;
The figure is a side view of the cutting device shown in FIG. 1, and FIG. 3 is a diagram showing the discharge state of the cutting device shown in FIG. 1 when a foreign object is caught.
4 is a plan view of the rotary cutter of the cutting processing device of FIG. 1, FIG. 5 is a sectional plan view of the rotary cutter of FIG. 4, FIG. 6 is a front view of the rotary cutter of FIG. 4, and FIG.
The figure is a front view of the disk in the rotating cutter.
FIG. 8 is a side view of the disk, FIG. 9 is a side view of a cutting device showing a modification of the present invention, FIG. 10 is a plan view of a conventional cutting device, and FIG. 11 is a conventional cutting device. FIG. 12 is a front view of the rotary cutter in a conventional cutting processing device. 3, 4...shaft, 5, 21...disk,
22, 23...Blade, 6...Color, 32...
...detection device, 33 ... control device, 47 ... rocking device, A, B ... rotary cutter.

Claims (1)

[Scope of utility model registration request] A rotating shaft comprising at least one pair of rotary cutters configured by alternately arranging a plurality of blades arranged in the circumferential direction and collars having a smaller diameter than the disk in the axial direction of the rotary shaft. A cutting device configured such that the disks of the cutters fit into each other, and which draws input material between a pair of rotating cutters through rotation of the rotary cutters by a rotational drive device and performs cutting processing on the input material. , the rotary cutter is arranged so that the input material can be drawn horizontally between the pair of rotary cutters, and the rotary cutter is selectively rotated in a forward direction and a reverse direction as the rotation drive device. using a rotary drive device such as that shown in FIG. further comprising: a detection device for detecting a load condition applied to the rotary cutter; and a control device for controlling the rotary drive device and the swing device in accordance with signals from the detection device. A cutting processing device characterized by being attached.