JP2000279836A - Shredder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To compactly house shredded refuse by feeding the shredded refuse stored in a hopper temporarily to a compression cylinder to compress the same and discharging the compressed shredded refuse block to a housing part. SOLUTION: An insert port 6 is provided in the upper portion of a shredder body case 1 to insert unnecessary paper such as letter paper, documents, or the like, in the case 1 to shred the same by the cutter of a shredding mechanism part 2. This shredded refuse is temporarily stored on a spiral conveyor 9 arranged to the lower part of a hopper 3 in succession. The predetermined amt. of the shredded refuse stored in the hopper 3 accompanied by the shredding of paper by the cutter is detected by a sensor to drive the conveyor 9 and the shredded refuse accumulated at the part of the screw 8 of a leading end part is spirally extruded by the rotation of the shaft of the conveyor 9 to be fed in a compression cylinder and the compressed shredded refuse block is discharged to a housing part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a shredder for shredding unnecessary paper and the like, compressing the shreds after the processing and compactly storing the shredder.

[0002]

2. Description of the Related Art Conventionally, a shredder has been used as means for shredding unnecessary paper. This shredder has an upper slot for feeding unnecessary paper, a cutter for shredding the unnecessary paper, and a storage unit for storing shreds that have been shredded by several millimeters with the cutter. , Are roughly divided. The shreds that have been shredded by the cutter naturally fall into the lower storage section in the shredder and are sequentially deposited, and each time the storage section is filled with the naturally dropped shreds, the shredder is removed from the storage section. They will be removed and discarded. Since the shreds that fall naturally are deposited with air mixed therein, the volume of the shredder is almost air even if it should be full. Since the storage part is a limited space area, it is quickly filled with shreds that occupy most of the volume.

[0003]

As means for solving this problem,
The shredder equipped with a compression mechanism compresses the above-mentioned shreds to remove mixed air.However, the compression ratio is low. There is a disadvantage that the shredding of the paper must be temporarily interrupted, and the compression and shredding cannot be performed simultaneously in parallel.

[0004] Further, a method of directly compressing shreds using water or a solvent has been attempted, but it is difficult to control the water content, and there is a problem in dealing with decay, mold, odor and the like.

[0005] Furthermore, when compressing shreds, a hydraulic cylinder may be used to increase the compression ratio. However, there is also a problem in that the speed required for compression is reduced, and oil leakage due to a failure of the seal between the cylinder and the piston rod. Becomes In addition, additional equipment for generating hydraulic pressure is required separately, which increases the size of the apparatus and increases installation costs.

SUMMARY OF THE INVENTION An object of the present invention is to provide a shredder for shredding unnecessary paper and the like, which provides a mechanism for compressing shredded chips and compactly storing them. In particular, it is an object of the present invention to provide a shredder that does not use water or a solvent and that can simultaneously perform compression and shredding. Another object of the present invention is to provide a shredder which has a high compression ratio of shredder chips, a high compression speed, and is free from oil leakage.

[0007]

In order to solve the above-mentioned problems, a shredder of the present invention shreds a main body case having a paper insertion port and a paper inserted from the insertion port. A cutter, a hopper for temporarily storing the shreds cut by the cutter, a transfer mechanism for transferring the shreds temporarily stored in the hopper into a compression cylinder, And a discharge mechanism for discharging the shredded chip blocks compressed by the compression cylinder to a storage section.

[0008] Further, as a preferred example, the transport mechanism is
The spiral conveyor is provided below the hopper in a direction perpendicular to the compression direction and transports the temporarily stored shredder while pushing it into the compression cylinder.

As a preferred example, the compression mechanism includes a hollow rotary shaft that is rotated by a compression motor, a toggle shaft that is screwed to the rotary shaft with the axial direction being up and down, and that moves up and down. A link whose upper end of the toggle shaft is loosely fitted to the central pivot portion and a toggle mechanism that connects this link to the rear portion of the compression rod, make the compression rod advance and retreat into the compression cylinder.

A preferred example of the compression cylinder is
Both ends in the compression direction are open and movable in the compression direction. During compression, the opening at one end in the compression direction is closed by contacting the inner wall of the main body case, and the compression is advanced from the opening at the other end. Shreds are compressed by rods.

In a preferred embodiment, the discharge mechanism is arranged such that a compression cylinder having both ends opened in the compression direction is separated from the inner wall of the main body case in a direction of the compression rod, which, after compression, stands by in the compression cylinder. In the course of moving together with the shredder block, the shredder block is brought into contact with the front surface of the compression rod, and is dropped and discharged from the space between the inner wall and the rear portion of the compression cylinder separated from the inner wall.

[0012]

The paper inserted from the insertion slot is shredded by a cutter, and the shredded chips after shredding are temporarily stored in a spiral conveyor installed at a lower portion in the hopper. When shredder is detected in the hopper as the paper is shredded by the cutter, the spiral conveyor conveys the shredder temporarily stored in the hopper into the compression cylinder. The shreds reaching the compression cylinder are compressed by the compression mechanism, and after the compression is completed, the compressed shredder blocks are dropped into the storage section by moving the compression cylinder.

It is possible to shred new paper with a cutter and temporarily store it in a hopper while the shredder is being conveyed to a compression cylinder by a spiral conveyor. That is, since the spiral conveyor extrudes spirally from the detected shredder by rotation of the shaft, a gap of only the extruded shred occurs in the hopper, and the newly shredded shred. Chips can be stored.

At this time, if the processing speed at which the paper inserted from the insertion slot is shredded by the cutter and the speed at which the shredded chips are compressed in the compression cylinder do not follow, the processing speed at which the paper is shredded is reduced. Even if the processing speed is higher than the processing speed for compressing the shredder, the shredding can be continued until the shredder becomes full in the hopper, and the processing capacity as a shredder can be maintained.

When compressing the shredder, when the compression mechanism is constructed by connecting the rear part of the compression rod which advances and retreats in the compression cylinder to a toggle mechanism, the compression motor is driven to compress the compression rod. In the direction of compression to increase the compression ratio of shreds in the compression cylinder,
It is also possible to increase the compression speed. In addition, after the shredding block is formed by compression, the compression cylinder is separated from the inner wall of the main body case.
Since the shredded chips are dropped into the storage section, the discharging mechanism can be simplified.

Furthermore, according to the above-mentioned shredder, since no water or solvent is used, there is no problem of water control and no problems such as decay, mold, odor and the like. In addition, since no hydraulic cylinder is used, no oil leakage occurs, no additional equipment such as a hydraulic circuit is required, and the apparatus can be simplified.

[0017]

Embodiments of the present invention will be described below with reference to embodiments shown in the drawings. In FIG. 1, the shredder of this embodiment has a main body case 1 formed in a rectangular parallelepiped shape, a so-called box shape as a whole, and a shredding mechanism portion 2, a hopper 3, a compression mechanism 4
And a storage unit 5 and the like.

At the upper part of the main body case 1, an insertion slot 6 for inserting unnecessary paper such as stationery and documents is provided. The paper inserted from the insertion slot 6 is finely cut into several mm by a known shredding mechanism 2 in which a large number of cutters (not shown) are attached to a cutter shaft (not shown). . The shreds 7 shredded by the shredding mechanism 2 fall naturally and are temporarily stored in the hopper 3.

As shown in FIGS. 1 to 4, the hopper 3 has an upper portion opened at least corresponding to the length of the shredding mechanism 2, so that the main body case 1 has a depth direction, that is, a side sectional shape. It is formed in a substantially inverted trapezoidal shape, and in a width direction of the main body case 1, that is, in a normal cross-sectional shape in a substantially inverted triangle shape. The hopper 3 is attached to the main body case 1, and a spiral conveyor 9 to which a screw 8 is spirally attached is installed in the lower part of the hopper 3 in the depth direction of the main body case 1. One end of the shaft portion 10 of the spiral conveyor 9 (the rear portion in the depth direction of the main body case 1) protrudes from the lower opening of the hopper 3, and the spiral conveyor motor 1
It is attached to 1.

On the other hand, four guides 13 are provided between the support frames 12 at the other end of the shaft portion (the front portion in the depth direction of the main body case 1) in a direction orthogonal to the axial direction of the spiral conveyor 9. Are laid in parallel. The compression cylinder 14 is supported in a state where the four corners 15 of the outer frame portion are inserted through the four guides 13. The side of the compression cylinder 14 facing the lower part of the hopper 3 is opened and communicates with the lower part of the hopper 3. Further, both ends in the width direction (compression direction) of the main body case 1 of the compression cylinder 14 are open on the entire surface. One opening of the compression cylinder 14 is normally in contact with the inner wall 16 of the main body case 1 and is closed. Further, a compression rod 17 inserted and supported by the four guides 13 from the other opening of the compression cylinder 14 can be advanced and retracted by a toggle mechanism 18.

One embodiment of the toggle mechanism 18 will be described with reference to FIGS. A compression motor 20 is mounted on a frame 19 installed at a lower portion of the main body case 1 in a reverse direction. At a position close to the compression motor 20, a hollow rotary shaft 21 is supported via a bearing 22 installed on the underframe 19. A chain or belt 25 is wound around the chain sprocket or pulley 23 of the compression motor 20 and the chain sprocket or pulley 24 of the rotary shaft 21, and the rotary shaft 21 is driven by the drive of the compression motor 20. . A receiving portion 26 having a female screw portion is attached to the upper end of the rotating shaft 21.
A toggle shaft 27 having a male screw portion formed on the outer periphery is screwed to the receiving portion 26 with the axial direction being the vertical direction. On the other hand, the rear part of the compression rod 17 and the compression rod 17
Are mounted on the inner wall 16 of the main body case 1 on the opposite side from the left and right sides. One end of a link 29, which is a pair of upper and lower and left and right sides, is pivotally supported by the pair of receiving members 28 via a mounting shaft 30. The other end of each link 29 is pivotally supported at substantially the center by a coupling shaft 31 to form a four-bar link. The upper end of the toggle shaft 27 is loosely fitted to the support 32 inserted into the upper coupling shaft 31 forming the four-bar link. Therefore, if the rotation shaft 21 is rotated forward, the toggle shaft 27 moves downward with the female screw portion as a base point. At this time, since the upper end of the toggle shaft 27 is loosely fitted to the support member 32, the link 29 is contracted and closed by pulling down the upper coupling shaft 31, and the compression rod 17 moves forward in the compression cylinder 14. I do. Conversely, when the rotating shaft 21 is reversed, the toggle shaft 27 moves upward, and the upper coupling shaft 31
Is pushed up through the support tool 32 to expand the link 29,
The compression rod 17 moves backward in the compression cylinder 14.

A discharge motor 33 is installed on the support frame 12, and the compression motor is driven by a mechanism such as a ball screw, a trapezoidal screw, or a rack and pinion (none of which is shown) that drives the discharge motor 33. The cylinder 14 is configured to be movable along the guide 13. The storage port of the storage section 5 is moved by the compression cylinder 14 to move the inner wall 1.
This is the interval formed when the block is separated from 6, and the shredded block 34 compressed in the compression cylinder 14 falls from this storage port.

Therefore, the paper inserted from the insertion slot 6 is shredded by the known cutter of the shredding mechanism 2, and the shredded chips 7 after shredding are removed from the spiral conveyor provided in the lower part of the hopper 3. 9 are temporarily stored. When a predetermined amount of shreds 7 is detected in the hopper 3 by shredding of the paper by the cutter, the spiral conveyor motor 11 rotates to rotate the spiral conveyor 9. Drive. Shaft 10 of spiral conveyor 9
Is rotated, it is conveyed in a state of being spirally extruded from the fine chips 7 deposited on the screw 8 at the tip end into the compression cylinder 14.

The spiral conveyor motor 11 is provided with a torque fluctuation detector (not shown). Therefore, as shown in FIG. 5, when the shredder 7 is continuously transported and the inside of the compression cylinder 14 is filled with the shredder 7, the torque fluctuation detector detects that the torque has fluctuated to a predetermined amount. Will be. Instead of this detection operation, it is also possible to detect that the current has fluctuated to a predetermined current value by a current fluctuation detector (not shown) connected in the middle of the wiring of the spiral conveyor motor 11. Along with these detection operations, the driving of the spiral conveyor motor 11 is stopped, and the conveyance of the shreds 7 into the compression conveyor 14 is stopped.

Next, when the compression motor 20 is driven, the toggle mechanism 18 operates. That is,
If the rotating shaft 21 is rotated forward, the toggle shaft 27 moves downward with the female screw portion as a base point. At this time, the toggle shaft 2
7 is loosely fitted to the support member 32, the link 29 is contracted and closed by pulling down the upper coupling shaft 31, and the compression rod 17 is guided by the four guides 13 and the compression cylinder 14 Start moving forward inside. On the way,
The shreds 7 transported into the compression cylinder 14 are shown in FIG.
As shown in (1), it is pressed by the compression rod 17, is compressed in the space formed by the compression cylinder 14 and the inner wall 16, and is compression-formed into the shredder block 34.

The compression motor 20 is provided with a torque fluctuation detector (not shown). Therefore, when the shredder 7 is compressed in the compression cylinder 14, the torque variation detector detects that the torque has fluctuated to a predetermined amount. Instead of this detection operation, it is also possible to detect that the current has fluctuated to a predetermined current value by a current fluctuation detector (not shown) connected in the middle of the wiring of the compression motor 20. Along with these detection movements, the drive of the compression motor 20 is stopped, and the compression movement of the compression rod 17 in the compression cylinder 14 is stopped.

After the compression of the shredder 7 is completed, the compression force of the compression rod 17 is released. Therefore, the toggle mechanism 18 is operated, and as shown in FIG. 7, the compression rod 17 is slightly retracted by using the guide 13 as a guide. That is, when the rotating shaft 21 is rotated in the reverse direction by the compression motor 20, the toggle shaft 2
7 moves upward, the upper connecting shaft 31 is pushed up via the support 32, the link 29 is expanded, and the compression rod 17 retreats inside the compression cylinder 14.

Next, the discharge motor 33 is driven,
A mechanism such as a ball screw, a trapezoidal screw, or a rack and pinion (both not shown) is operated. As a result, the compression cylinder 14 moves the inner wall 1
6 and moves toward the compression rod 17. During the movement of the compression cylinder 14, the shredder block 34 that has been moving together with the compression cylinder 14 comes into contact with the front surface of the compression rod 17 that has been retracted, and is stopped. Since the compression cylinder 14 moves thereafter, the shredder block 34 has no support at the lower end, and as shown in FIG.
It is dropped from the space at the rear part of the compression cylinder 14 and is discharged to the storage part 5.

In order to discharge the shredder block 34, the compression force applied to the compression rod 17 is released after the compression rod 17 is completely compressed by the shredder 7, but the compression cylinder 14 is moved first. Then, even after the compression force applied to the compression rod 17 is released, the shredder block 34 can be dropped and discharged into the storage section 5 as described above. In either case, the discharge of the shredder block 34
Compression cylinder 14 and compression rod 1 used for compression
7 is also used in a different way, so that the main body case 1 can be made compact.

While the shredder 7 is being conveyed to the compression cylinder 14 by the spiral conveyor 9, new paper can be shredded by the cutter and temporarily stored in the hopper 3. That is, the spiral conveyor 9
Is pushed out spirally from the detected shredder 7 by the rotation of the shaft 10, a gap is formed in the hopper 3 only by the extruded shredder 7, and the newly shredded shredder 7 The chips 7 can be temporarily stored. At this time, if the processing speed at which the paper inserted from the insertion slot 6 is shredded by the cutter and the speed at which the shredder 7 is compressed in the compression cylinder 14 do not follow, the processing speed at which the paper is shredded, Shreds 7
Even if the processing speed for compressing
The shredding process can be continued until the shreds 7 are filled inside, and the processing ability as a shredder can be maintained.

In this embodiment, for convenience of explanation, a spiral conveyor 9 is employed as a mechanism for transporting the shredder 7, but instead of the spiral conveyor 9, a pair of front and rear in the depth direction of the main body case 1 is used. It is also possible to provide a belt conveyor in which belts are stretched between pulleys attached to the shafts by installing the shafts. According to this belt conveyor, since the belt conveyor itself is an endless belt, by rotation of the belt conveyor, a certain amount of the fine chips 7 is conveyed from the lower shredder 7 in the piled state, and is conveyed into the hopper 3. A gap of only the swarf 7 is generated, and the newly shredded swarf 7 can be temporarily stored. Therefore, it is possible to cut new paper with the cutter while the shredder 7 is being conveyed to the compression cylinder 14 by the belt conveyor.

Although the present invention has been described based on the use of shreds of unnecessary paper, the present invention is not limited to this. It can be applied and applied to

[Brief description of the drawings]

FIG. 1 is a side sectional view showing an example of a shredder of the present invention.

FIG. 2 is a partially cutaway sectional front view of FIG. 1;

FIG. 3 is a partially cutaway plan view of FIG. 2;

FIG. 4 is an enlarged sectional view of a main part.

FIG. 5 is an operation explanatory view showing a compression process in a compression cylinder.

FIG. 6 is an operation explanatory view showing a compression process in a compression cylinder.

FIG. 7 is an operation explanatory view showing a compression step in a compression cylinder.

FIG. 8 is an operation explanatory view showing a compression process in a compression cylinder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 3 Hopper 4 Compression mechanism 5 Storage part 6 Insertion opening 7 Shredder 9 Spiral conveyor 13 Guide 14 Compression cylinder 17 Compression rod 18 Toggle mechanism 27 Toggle shaft 29 Link 34 Shredder block

Claims (5)

[Claims] A main body case having a paper insertion opening, a cutter for shredding the paper inserted from the insertion opening, a hopper for temporarily storing shredded chips shredded by the cutter, A transport mechanism for transporting the shreds temporarily stored in the hopper into the compression cylinder, a compression mechanism for compressing the shreds in the compression cylinder, and a shredder block compressed by the compression cylinder And a discharge mechanism for discharging the liquid into the storage section. 2. The spiral conveyor according to claim 1, wherein the transport mechanism is provided at a lower part of the hopper in a direction orthogonal to the compression direction, and transports the temporarily stored shredded chips while pushing them into the compression cylinder. Shredder. 3. The compression mechanism includes a hollow rotary shaft that is rotated by a compression motor, a toggle shaft that is screwed to the rotary shaft with the axial direction being the up and down direction, and a toggle shaft that moves up and down, and an upper end of the toggle shaft. 2. A shredder according to claim 1, comprising a link loosely fitted to a central pivot portion, and a toggle mechanism connecting the link to a rear portion of the compression rod, so that the compression rod can be advanced and retracted into the compression cylinder. 4. The compression cylinder is open at both ends in the compression direction and is movable in the compression direction. During compression, one end of the compression cylinder in the compression direction is closed by contacting the inner wall of the main body case, and the other end of the compression cylinder is closed at the other end. The shredder according to claim 1, wherein the shredder is compressed by the compression rod that advances from the opening. 5. The discharge mechanism includes a shredder block in which a compression cylinder having both ends opened in a compression direction moves away from an inner wall of the main body case in a direction of the compression rod after compression, and a compression force is released. 2. The shredder according to claim 1, wherein the pressure is discharged from the rear portion of the compression cylinder separated from the inner wall to the storage portion.