JP2001259459A - Method for forming paper cutting waste block of paper cutting waste, compression equipment, and shreder containing compression equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for forming a paper cutting waste block with which paper cutting waste is hardly scattered from a corner portion, and to provide a compression equipment and a shreder containing the compression equipment. SOLUTION: The device which compresses the paper cutting waste cut out from paper sheets to form the paper cutting waste block has a chamfering applying part for applying a chamfer so as to cut down the angle of angular edges along one or more angular edges formed on the boundary of the surfaces mutually adjacent to the paper cutting waste block after the compression on the inside surface of a compression space for compressing paper cutting waste and/or the pressure surface of a pressing member for applying compression work to the paper cutting waste within the compression space. There is no angular part in the paper cutting waste block after compression molding, and chamfering is formed, respectively. For this reason, when discharging the paper cutting waste block compressed in the compression space by self-weight falling to a storing part or taking out the paper cutting waste blocks from the storing part, scattering of paper cutting waste from its corner portion or chipping is hardly generated on handling.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of forming a paper cutting chip block by compressing paper cutting chips obtained by cutting unnecessary paper and the like, a compression device, and a shredder including the compression device.

[0002]

2. Description of the Related Art Conventionally, a shredder has been used as means for cutting unnecessary paper. The shredder is mainly provided in an upper slot for feeding unnecessary paper, a cutter for cutting the inserted unnecessary paper, and a storage unit for storing paper cutting chips cut in several millimeters by the cutter. It is configured separately. The paper cuttings cut by the cutter naturally fall into the lower storage section in the shredder and are sequentially deposited, and each time the storage section is full of naturally dropped paper cuttings, the paper cutting waste is taken out of the storage section. To be discarded. Since the paper cuttings that fall naturally are deposited in a state where air is mixed in, the content of the volume is almost air even if it should be full. Since the storage area is a limited space area, the storage space is quickly filled with paper cuttings occupying most of the volume.

[0003]

As means for solving this problem,
The shredder equipped with a compression mechanism compresses the paper cuttings and removes the air mixed in.The compression rate is low. There is a disadvantage that the cutting of the paper must be temporarily interrupted and the compression and the cutting cannot be performed simultaneously.

A method of directly compressing paper cuttings using water or a solvent has also been tried, but it is difficult to control the water content, and there is a problem in dealing with decay, mold, odor and the like. Further, when compressing paper cuttings, 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 in sealing the cylinder and the piston rod is also a problem. In addition, additional equipment for generating hydraulic pressure is required separately, which increases the size of the apparatus and increases installation costs.

[0005] Further, for example, paper cuttings conveyed into a compression cylinder formed of a square cylindrical body are compressed from the other end in the compression direction by a compression rod and formed into paper cutting blocks. The paper cutting waste block after molding has a substantially rectangular parallelepiped shape and is in an angular state, and its corner portion is easily broken by an impact. For this reason, when the paper cutting waste blocks compressed by the compression cylinder are discharged to the storage unit by their own weight, or when these paper cutting waste blocks are taken out from the storage unit, the corners may be scattered during handling, The chippings will cause the paper cuttings to be scattered around. This is disadvantageous for purposes such as simplifying the handling of shredded paper shredder by compressing it and improving confidentiality.

Therefore, the present invention does not use water or a solvent, enables simultaneous processing of compression and cutting, has a high compression ratio of paper cutting waste, a high compression speed, and has a problem of oil leakage. It is intended for shredders that do not work. In view of the above, an object of the present invention is to provide a method, a compression apparatus, and a method for forming a paper cutting waste block in which the paper cutting waste is hardly scattered from a corner portion when compressing the paper cutting waste obtained by cutting unnecessary paper into a paper cutting waste block. An object of the present invention is to provide a shredder including a compression device.

[0007]

Means for Solving the Problems and Action / Effects In order to solve the above-mentioned problems, a method for forming a paper cutting waste block of paper cutting waste according to the present invention is provided by compressing paper cutting waste obtained by cutting paper. A method for forming a cutting waste block, wherein the paper cutting waste block is formed at a boundary between mutually adjacent surfaces of the paper cutting waste block.
A feature is that a chamfered portion is formed along the above-mentioned corner so as to reduce the corner of the corner.

In order to solve the above problems, a second method of forming a paper cutting waste block of paper cutting waste according to the present invention is a method of forming a paper cutting waste block by compressing paper cutting waste obtained by cutting paper. And supplying the paper cuttings to a compression chamber, compressing the paper cuttings in one direction in the compression chamber, and forming at least a boundary between adjacent surfaces of the paper cutting block. A chamfer is formed along one or more corners parallel to the compression direction or in a direction inclined at a predetermined angle so as to reduce the corners of the corners.

In order to solve the above problems, a paper cutting waste compression apparatus of the present invention is an apparatus for compressing paper cutting waste obtained by cutting paper to form a paper cutting waste block. On the inner surface of the compression chamber to be compressed, and / or on the pressing surface of the pressing member that performs a compressing action on the paper cuttings in the compression chamber,
Along with at least one edge formed at a boundary between mutually adjacent surfaces of the paper cutting waste block after compression, a chamfering application portion for applying a chamfering portion so as to reduce the corner of the edge is formed. It is characterized by having been done.

[0010] In order to solve the above-mentioned problems, a second paper cutting waste compression apparatus of the present invention is an apparatus for forming a paper cutting waste block by compressing paper cutting waste obtained by cutting paper. A compression chamber for accommodating the cutting waste, and a pressing member that fits relatively movably in the compression chamber in the compression chamber and that compresses the paper cutting waste in the compression chamber; and an inner surface of the compression chamber. A chamfered portion formed along a boundary between adjacent surfaces of the paper cutting waste block after compression and extending at least in parallel with the compression direction at least along one or more corners so as to drop corners of the corners. A chamfering portion for giving a chamfer is formed parallel to the compression direction, and a pressing-side corresponding surface corresponding to the chamfering portion of the compression chamber is formed on an outer surface of the pressing member in parallel with the compression direction. And perpendicular to the compression direction. Both correspond to each other and the outer surface of the pressing member and the inner surface of the compression chamber in the surface shape, characterized in that the fitting.

The compression chamber for compressing the paper cuttings is formed of, for example, a rectangular cylindrical body. The corners of the inner peripheral wall in a direction orthogonal to the compression direction are not angular, and the rectangular cylindrical bodies are adjacent to each other. Along the corner formed at the boundary between the two, the corner is formed so that the corner of the corner is dropped. That is, the compression chamber has a cross-sectional shape perpendicular to the compression direction, the corner of the inner peripheral wall thereof is formed in a corner-dropping shape, and the corner which is perpendicular to the compression direction of the pressing member that moves forward and backward in the compression chamber. Are also formed in the shape of a corner drop parallel to the compression direction.

As described above, the inner peripheral wall of the compression chamber and the pressing surface of the pressing member are formed with the chamfering portions for providing the chamfered portions so that the respective corners reduce the corners of the corners. I have. For this reason, the pressing member fits into the inner peripheral wall of the compression chamber and compresses the paper cutting debris. Parallel chamfers are formed. And
The chamfered portion of the paper cutting waste block can form not only a straight section perpendicular to the compression direction but also a curved section perpendicular to the compression direction. When the chamfered portion is formed in a curved shape, a cross section orthogonal to the compression direction may be curved outwardly or a cross section orthogonal to the compression direction may be slightly concave inward.

[0013] In this case, the chamfering portion formed on the inner peripheral wall of the compression chamber has a cross section perpendicular to the compression direction in which the line connecting the boundaries between the adjacent rectangular cylinders is linear or curved. (A cross section orthogonal to the compression direction is a curved shape that swells outward, or a cross section that is orthogonal to the compression direction is a curved shape that is slightly depressed inward). Also, to be fitted to the inner peripheral wall of the compression chamber and to be movable in the compression direction,
In the chamfering portion formed on the pressing surface of the pressing member, in a cross section orthogonal to the compression direction, a line connecting the boundaries between the surfaces in which the angular pressing members are adjacent to each other is formed in a straight line or a curved line.

In addition, it is possible to form a chamfered portion on the front and rear peripheral edges in the compression direction of the paper cutting waste block.
For example, when forming a chamfer at the four peripheral edges on the front side in the compression direction of the paper cutting waste block, the chamfering portion is formed on the side wall surface which closes and closes the tip of the compression chamber. In this case, the chamfering portion is frame-shaped, that is, the outer edge protruding from the side wall is fitted in sliding contact with the inner peripheral wall of the distal end of the compression chamber, and the inner edge located inside the outer edge from the outer edge. Attach the formwork that is drawn into the corner drop shape.

On the other hand, in the case where a chamfered portion is formed on the peripheral edge on the rear side in the compression direction of the paper cutting waste block, a chamfered portion is formed on the pressing surface side of the pressing member which moves forward and backward in the compression direction in the compression chamber. I do. In this case, the chamfering portion is formed by drawing the four peripheral edges on the front side in the compression direction of the pressing member from the outside to the inside in a corner drop shape. According to this, the corner portions orthogonal to the compression direction of the paper cutting waste block after the compression molding and the four peripheral edges on the front and rear sides in the compression direction have no chamfered portions, and chamfered portions are formed.

Therefore, even if the paper cutting waste block after molding has a substantially rectangular parallelepiped shape, its corner portion is chamfered, so that there is no squared portion. For this reason, when the paper cutting block compressed in the compression chamber is discharged to the storage section by its own weight, or when the paper cutting block is taken out from the storage section, the paper cutting block from the corner portion is difficult to handle. Scattering or chipping hardly occurs.
That is, the impact resistance of the paper cutting block is improved, and the paper cutting chips are less likely to be scattered around the block.

In order to solve the above problems, a shredder of the present invention comprises a cutting device for cutting paper, a conveying device for feeding the cut paper waste to a compression device, and a shrinking device for compressing the paper waste. And a compression device.

As a preferred example, the conveying device is provided in a lower part of a hopper in a direction orthogonal to a compression direction, and is a spiral conveyor for conveying temporarily stored paper cuttings while extruding them into a compression chamber. I have.

As a preferred example, the compression mechanism for compressing the paper cuttings in the compression chamber is formed by screwing a hollow rotary shaft rotated by a compression motor and a vertical axis of the rotary shaft. A toggle shaft that moves up and down, a link whose upper end is loosely fitted to a central pivot, and a toggle mechanism that connects this link to the rear of the pressing member are provided. You can move back and forth.

As a preferred example, the compression chamber is open at both ends in the compression direction and is movable in the compression direction. At the time of compression, the compression chamber is closed at one end in the compression direction by contacting the side wall. The paper cutting chips are compressed by the pressing member that advances from the opening at the other end.

As a preferred example, the discharge port is formed such that, after compression, a compression chamber having both ends opened in the compression direction separates from the pressure receiving member in the direction of the pressing member, which stands back in the compression chamber after compression. During the movement together with the dust block, the paper cutting dust block is brought into contact with the front surface of the pressing member, and is dropped and discharged from the rear space of the compression chamber separated from the pressure receiving member.

While the paper cutting waste is being conveyed to the compression chamber by the spiral conveyor, new paper can be cut by the cutter and temporarily stored in the hopper. That is, since the spiral conveyor extrudes spirally from the detected paper cuttings by rotation of the shaft, a gap of only the extruded paper cuttings is generated in the hopper, and the newly cut paper cuttings are formed. The waste can be stored.

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

Further, when compressing the paper cutting waste, when the compression mechanism is constituted by connecting the rear part of the pressing member which advances and retreats in the compression chamber to the toggle mechanism, the compression motor is driven to move the compression rod in the compression direction. By moving forward, the compression ratio of the paper cuttings in the compression chamber can be increased, and the compression speed can be increased. After the compression of the paper cutting block, the compression chamber is separated from the pressure receiving member and the paper cutting block is dropped from the space generated between the pressure receiving member and the compression chamber, so that the discharge mechanism can be simplified.

Further, 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.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the 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, a cutting mechanism (not shown) installed in the main body case 1, and a main body case 1. , A hopper 2, a compression mechanism 3, a storage section 4, and the like are respectively installed.

At the upper part of the main body case 1, there is provided an insertion slot 5 for inserting unnecessary paper such as stationery and documents. The paper inserted from the insertion slot 5 is cut into small pieces of about several mm by a known cutting mechanism in which a number of cutters (not shown) are attached to a cutter shaft (not shown). The paper cutting waste 6 cut by the cutting mechanism falls naturally and is temporarily stored in the hopper 2.

As shown in FIG. 1, the hopper 2 has an upper portion opened at least corresponding to the length of the cutting mechanism, and has a substantially inverted trapezoidal side sectional shape and a substantially inverted trapezoidal sectional shape. It is formed in a triangular shape. The hopper 2 is attached adjacent to the side of the main body case 1,
Spiral conveyor 8 with screw 7 mounted in a spiral
Are installed in the depth direction of the main body case 1. One end of a shaft portion 9 of the spiral conveyor 8 (a rear portion in the depth direction of the main body case 1) protrudes from a lower opening of the hopper 2 and is attached to a spiral conveyor motor 10.

On the other hand, four guides 12 are laid in parallel in the direction perpendicular to the axial direction of the spiral conveyor 8 within the space between the support frames 11 at the other end of the shaft portion 9. The compression cylinder 13 is formed of, for example, a rectangular cylindrical body, and four corners 14 of the outer frame are supported by being inserted into the four guides 12. The side of the compression cylinder 13 facing the lower part of the hopper 2 is opened and communicates with the lower part of the hopper 2. Further, both ends in the compression direction of the compression cylinder 13 are open on the entire surface.
One opening of the compression cylinder 13 is normally in contact with the side wall 15 and is closed. Also, from the other opening of the compression cylinder 13,
A compression rod 16 inserted and supported by the book guide 12 can be moved forward and backward by a toggle mechanism 17.

One embodiment of the toggle mechanism 17 is shown in FIG.
This will be described with reference to FIGS. A compression motor 19 is mounted on a frame 18 provided on the opposite side of the spiral conveyor 8 in a reverse direction. At a position close to the compression motor 19, a hollow rotary shaft 20 is supported via a bearing 21 installed on the underframe 18. A chain sprocket or pulley 22 of the compression motor 19;
A chain or belt 24 is wound around the chain sprocket or pulley 23 of the rotating shaft 20, and the rotating shaft 2
0 follows the drive of the compression motor 19. Rotary axis 2
A receiving portion 25 having a female screw portion is attached to the upper end of 0, and a toggle shaft 26 having a male screw portion formed on the outer periphery is screwed to the receiving portion 25 with the axial direction being the vertical direction. . On the other hand, a pair of receiving members 27 are attached to the left and right sides of the rear part of the compression rod 16 and the side wall 15 located on the opposite side of the compression rod 16. This pair of receivers 2
7, one end of a link 28, which is a pair of upper and lower and left and right sides, is pivotally supported via a mounting shaft 29. Each link 28
Is pivotally supported at approximately the center by a coupling shaft 30 to form a four-bar link. The upper end of the toggle shaft 26 is connected to an upper connecting shaft 30 forming a four-bar link.
Is loosely fitted to the support tool 31 inserted through the support member 31. Therefore, if the rotation shaft 20 is rotated forward, the toggle shaft 26 moves downward with the female screw portion as a base point. At this time, since the upper end of the toggle shaft 26 is loosely fitted to the support 31, the link 28 is contracted and closed by pulling down the upper coupling shaft 30, and the compression rod 16 is moved to the compression cylinder 13.
Go inside. Conversely, when the rotating shaft 20 is reversed, the toggle shaft 26 moves upward, the upper connecting shaft 30 is pushed up via the support 31 to expand the link 28, and the compression rod 16 is moved inside the compression cylinder 13. Retreat.

As shown in FIG. 5, a discharge motor 32 is provided on the support frame 11, and a chain wheel 34 attached to a drive shaft 33 of the motor 32 and a chain wheel attached to a driven shaft 35. The compression cylinder 13 is configured to be movable along the guide 12 via a mechanism such as a ball screw, a trapezoidal screw, or a rack and pinion (none of which is shown) that extends over a chain 37 between the compression cylinder 13 and the guide cylinder 12. .
The storage opening of the storage section 4 is a space formed when the compression cylinder 13 moves and separates from the side wall 15. The paper cutting waste block 38 compressed in the compression cylinder 13 from this storage opening is formed. Will fall.

The compression cylinder 13 is formed of a square cylindrical body,
The corners of the four corners in the direction perpendicular to the compression direction are not sharp, and the corners of the corners are cut along the corners formed at the boundaries between adjacent surfaces. It is formed as follows. That is, as shown in FIG. 7, the compression cylinder 13 is formed in a chamfered portion 39 having a corner shape of an inner peripheral wall 40 having a cross-sectional shape orthogonal to the compression direction, the corner portion being parallel to the compression direction. I have. A corner portion perpendicular to the compression direction of the compression rod 16 that advances and retreats in the compression cylinder 13 is also formed with a chamfered portion 39 in the shape of a chamfer in parallel with the compression direction so as to reduce the corner of the corner. Have been. For this reason, the compression rod 16 fits into the inner peripheral wall 40 of the compression cylinder 13 and compresses the paper cutting waste 6, so that the compression-molded paper cutting waste block 38 has a corner portion orthogonal to the compression direction. Has a chamfer 41 parallel to the compression direction.

The chamfered portion 41 of the paper cutting waste block 38 has a cross section orthogonal to the compression direction in a straight line 41a.
(See FIG. 12A.) It is also possible to form a cross section orthogonal to the compression direction into a curved shape.
That is, a chamfered portion 41b (see FIG. 12B) having a cross section orthogonal to the compression direction bulging outward or a chamfered portion 41c having a curved cross section perpendicular to the compression direction slightly inward (see FIG. 12B). 12 (c)).

In this case, the inner peripheral wall 40 of the compression cylinder 13
In the cross-section orthogonal to the compression direction, the line connecting the boundaries between the surfaces in which the rectangular cylinders are adjacent to each other is straight (see FIG. 7C) or curved (compression). A cross section perpendicular to the direction is formed as a curved shape bulging outward or a cross section perpendicular to the compression direction is formed as a curved shape slightly concave inward (not shown). Further, the chamfering portion 39 formed on the pressing surface of the compression rod 16 is fitted in the inner peripheral wall 40 of the compression cylinder 13 so as to be movable in the compression direction.
The line connecting the boundaries between the surfaces where the angular compression rods 16 are adjacent to each other is formed in a straight line or a curved line (not shown).

Further, it is possible to form a chamfered portion 41 also at the four peripheral edges of the paper cutting waste block 38 on the front and rear sides in the compression direction. For example, as shown in FIG. 11, when forming the chamfered portions 41 on the four peripheral edges on the front side in the compression direction of the paper cutting waste block 38, the chamfered portion is provided on the surface of the side wall 15 that contacts and closes the tip of the compression cylinder 13. Form 39. In this case, the chamfering portion 39 is formed of a frame 42 having a frame shape, that is, an outer edge 43 protruding from the side wall 15.
A form frame 42 formed by being drawn into the chamfering portion 39 from the outer edge portion 43 to the inner edge portion 44 located inside the outer peripheral portion 43 is attached thereto.

On the other hand, when the chamfered portion 41 is formed at the four peripheral edges on the rear side in the compression direction of the paper cutting waste block 38,
A chamfering portion 39 is formed on the pressing surface side of the compression rod 16 that advances and retreats in the compression cylinder 13 in the compression direction. In this case, the chamfering portion 39 moves the four peripheral edges on the pressing surface side in the compression direction of the compression rod 16 from the outer side 45 to the inner side 4.
It is formed by drawing in a corner drop shape over 6. According to this, as shown in FIG. 11C, the corners orthogonal to the compression direction of the paper cutting waste block 38 after compression molding and the four peripheral edges on the front and rear sides in the compression direction are angular. However, chamfered portions 41 are formed respectively.

The shape of the paper cutting waste block 38 is not limited to a rectangular parallelepiped, but may be any other shape such as a cylindrical shape or a pseudo-cylindrical shape. For example, when a cylindrical paper cutting waste block 38a is used, the compression cylinder 13 is formed into a cylindrical shape (not shown), and the compression rod 16 is moved forward and backward in the compression cylinder 13.
Is also disc-shaped (not shown). Then, a chamfering portion 39 is formed on the circumferential portion of the side wall 15 that closes the tip of the compression cylinder 13 in contact therewith, and the circumferential portion on the pressing surface side in the compression direction of the compression rod 16 is angled from the outside to the inside. The chamfering portion 39 is drawn into the shape. According to this, as shown in FIG. 13, it is possible to form the chamfered portion 41 d also on the front and rear circumferential edges in the compression direction of the paper cutting waste block 38 a after the compression molding.

Further, as shown in FIG. 10, the paper cutting waste block 38 forms the chamfered portion 41 along a corner parallel to the compression direction, or may be formed along a corner inclined at a predetermined angle. It is possible. For example, the compression cylinder 1
As shown in FIG. 14, the compression cylinder 1
Draft angle 47 (tapered portion) gently expanded toward the opening at the front end in the compression direction over a distance corresponding to at least the thickness of the paper cutting waste block 38 compressed in 3
To form Since the compression cylinder 13 of the present embodiment is formed of a square cylindrical body, the draft angles 47 are formed on two opposing surfaces. At this time, the compression cylinder 13 is formed as a chamfered portion (not shown) having a cross-section perpendicular to the compression direction and having a corner angle of the inner peripheral wall 40 parallel to the direction inclined at a predetermined angle. ing. Also, a corner portion of the compression rod 16 that advances and retreats in the compression cylinder 13 at right angles to the direction inclined at a predetermined angle is also provided with a chamfered chamfering portion (not shown) so as to reduce the corner of the corner. Is formed. Therefore, as shown in FIG. 15, the compressed paper cutting waste block 38 b has an amount corresponding to the formation of the draft angle 47 gently expanding toward the opening at the distal end in the compression direction on the distal end wall of the compression cylinder 13. The chamfered portion 41 can be formed in a direction inclined by a predetermined angle.

Therefore, the paper inserted from the insertion slot 5 is cut by a known cutter of the cutting mechanism, and the cut paper waste 6 after the cutting is temporarily put on a spiral conveyor 8 installed at a lower part in the hopper 2. Are sequentially stored. With the cutting of the paper by the cutter, a predetermined amount of paper cutting waste 6 is placed in the hopper 2.
When it is detected by a cutting waste detection sensor (not shown),
The spiral conveyor motor 10 rotates to drive the spiral conveyor 8. Shaft 9 of spiral conveyor 8
Is rotated, it is conveyed in a state where it is helically extruded from the paper cuttings 6 deposited on the screw 7 at the leading end into the compression cylinder 13.

The spiral conveyer motor 10 is provided with a torque fluctuation detector (not shown). Accordingly, with the continuous transport of the paper cutting waste 6, FIG.
As shown in (a), the inside of the compression cylinder 13 is
Is full, the torque fluctuation detector detects that the torque has fluctuated to a predetermined torque amount. Instead of this detection operation, the fact that the current has fluctuated to a predetermined value may be detected by a current fluctuation detector (not shown) connected in the middle of the wiring of the spiral conveyor motor 10. With these detection movements, the spiral conveyor motor 1
0 is stopped, and the conveyance of the paper cutting waste 6 into the compression conveyor 13 is stopped.

Next, when the compression motor 19 is driven, the toggle mechanism 17 operates. That is,
If the rotation shaft 20 is rotated forward, the toggle shaft 26 moves downward with the female screw portion as a base point. At this time, the toggle shaft 2
6 is loosely fitted to the support 31, the link 28 is contracted and closed by pulling down the upper connecting shaft 30, and the compression rod 16 is guided by the four guides 12 and the compression cylinder 13. Start moving forward inside. On the way,
As shown in FIG. 8B, the paper cutting waste 6 that has been conveyed into the compression cylinder 13 is pressed by a compression rod 16 and is compressed in a space formed by the compression cylinder 13 and the side wall 15, and The cutting waste block 38 is formed.

The compression motor 19 is provided with a torque fluctuation detector (not shown). Therefore, when the paper cutting waste 6 is compressed in the compression cylinder 13,
The torque fluctuation detector detects that the torque has changed to a predetermined torque amount. Instead of this detection operation, a change in the current value to a predetermined value may be detected by a current change detector (not shown) connected in the middle of the wiring of the compression motor 19. Along with these detection movements, the drive of the compression motor 19 is stopped, and the compression movement of the compression rod 16 in the compression cylinder 13 is stopped.

After the compression of the paper cutting waste 6 is completed, the compression rod 16
To release the compression force. For this reason, the toggle mechanism 17 is operated, and as shown in FIG. 9A, the compression rod 16 is slightly retracted using the guide 12 as a guide. That is, when the rotation shaft 20 is reversed by the compression motor 19, the toggle shaft 26 moves upward, the upper coupling shaft 30 is pushed up via the support 31, the link 28 is expanded, and the compression rod 16 is moved. The inside of the compression cylinder 13 is retracted.

Next, the discharge motor 32 is driven,
A mechanism such as a ball screw, a trapezoidal screw, or a rack and pinion (both not shown) is operated. Thus, the compression cylinder 13 is guided by the guide 12 to guide the side wall 1.
5 and moves in the direction of the compression rod 16 (anti-compression direction). During the movement of the compression cylinder 13, the paper cutting block 38 that has been moving together with the compression cylinder 13 comes into contact with the front surface of the compression rod 16 that has been retracted, and is stopped. Since the compression cylinder 13 continues to move thereafter, the paper cutting waste block 38 has no supporting portion at the lower end.
As shown in FIG. 2B, the compressed air drops from the rear portion of the compression cylinder 13 separated from the side wall 15 to the storage portion 4 and is discharged.

In order to discharge the paper cutting waste block 38, the compression force applied to the compression rod 16 is released after the compression rod 16 is completely compressed by the paper cutting waste 6, but the compression cylinder 13 is moved first. And then the compression rod 16
Even if the compressive force applied to is released, the paper cutting waste block 38 can be dropped into the storage section 4 and discharged in the same manner as described above. In any case, since the compression cylinder 13 and the compression rod 16 used for the compression are used for discharging the paper cutting waste block 38 in a different manner, the shredder can be made compact.

In addition, the paper cutting waste 6 is transferred to the spiral conveyor 8.
While the paper is being conveyed to the compression cylinder 13, new paper can be cut by the cutter and temporarily stored in the hopper 2. That is, the spiral conveyor 8 is spirally extruded from the detected paper cuttings 6 by the rotation of the shaft 9, so that a gap of only the extruded paper cuttings 6 is generated in the hopper 2. The cut paper cutting waste 6 can be temporarily stored. At this time, if the processing speed for cutting the paper inserted from the insertion slot 5 by the cutter and the speed for compressing the paper cutting waste 6 in the compression cylinder 13 do not follow, the processing speed for cutting the paper is:
Even if the processing speed for compressing the paper cuttings 6 exceeds the processing speed, the cutting processing can be continued until the paper cuttings 6 become full in the hopper 2, and the processing capacity as a shredder can be maintained. .

In this embodiment, a spiral conveyor 8 is employed as a transport mechanism of the paper cutting waste 6 for the sake of convenience of description. However, instead of the spiral conveyor 8, a pair of spiral conveyors 8 are provided at predetermined intervals in front and rear. It is also possible to provide a belt conveyor in which shafts are installed and a belt is stretched between pulleys attached to each shaft. According to this belt conveyor, since the belt conveyor itself is an endless belt, by the rotation of the belt conveyor, a certain amount of paper is conveyed from the lower paper cutting waste 6 in the piled state, and the paper conveyed into the hopper 2. A gap of only the cutting waste 6 is generated, and the newly cut paper cutting waste 6 can be temporarily stored. Therefore, it is possible to cut new paper by the cutter while the paper cutting waste 6 is being conveyed to the compression cylinder 13 by the belt conveyor.

Although the present invention has been described based on paper cuttings 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 perspective view showing an entire shredder of the present invention.

FIG. 2 is a partially cutaway enlarged plan view of FIG. 1;

FIG. 3 is an enlarged front view partially cut away of FIG. 1;

FIG. 4 is a partially cutaway enlarged plan view of FIG. 3;

FIG. 5 is an enlarged side view partially cut away of FIG. 1;

FIG. 6 is an enlarged sectional view of a main part showing a state in which paper cuttings are transported to a compression cylinder

FIG. 7 is a schematic plan view (a) showing the relationship between a compression cylinder and a compression rod, a schematic side view (b), and a schematic front view (c).

FIG. 8 is an operation explanatory view (a) showing a compression step in a compression cylinder, and an operation explanatory view (b) showing the same compression step.

FIG. 9 is an operation explanatory view (a) showing a compression step in the compression cylinder, and an operation explanatory view (b) showing the same compression step.

FIG. 10 is an enlarged perspective view showing a paper cutting waste block having chamfered portions formed at four corners orthogonal to the compression direction.

FIG. 11 is a schematic side view (a) showing a side wall and a compression rod in another form, with a compression cylinder omitted, and a schematic side view showing the schematic side view (a) with a compression cylinder added. FIG. 4B is a perspective view of a paper cutting waste block in which chamfers are formed at four corners orthogonal to the compression direction and four peripheral edges on the front and rear sides in the compression direction.

FIG. 12A is a front view showing a form of a chamfered portion of a paper cutting waste block, FIG. 12B is a front view showing another form of a chamfered portion of the paper cutting waste block, and FIG. The figure which shows the front view (c) which shows another form.

FIG. 13 is an enlarged perspective view showing a cylindrical paper cutting waste block in which a chamfered portion is formed at a circumferential edge portion before and after in a compression direction.

FIG. 14 is a schematic plan view (a) of another embodiment showing a relationship between a compression cylinder and a compression rod, and a schematic side view thereof (b).
FIG. 2 is a diagram showing a schematic front view (c) of FIG.

FIG. 15 is an enlarged perspective view showing another form of the chamfered portion of the paper cutting waste block.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Hopper 3 Compression mechanism 4 Storage part 5 Insertion opening 6 Paper cutting waste 8 Spiral conveyor 12 Guide 13 Compression cylinder 16 Compression rod 17 Toggle mechanism 26 Toggle shaft 28 Link 38 Paper cutting waste block 39 Chamfering part 41 Chamfering part 42 formwork

Claims (5)

[Claims] 1. A method for forming a paper cutting chip block by compressing paper cutting chips obtained by cutting paper, wherein at least one edge formed at a boundary between mutually adjacent surfaces of the paper cutting chip block. Characterized in that a chamfered portion is formed so as to reduce the corner of the corner along the edge of the paper cutting dust block. 2. A method for forming a paper cutting chip block by compressing paper cutting chips obtained by cutting paper, wherein the paper cutting chips are supplied to a compression chamber, and the paper cutting chips are transferred in one direction in the compression chamber. While compressing, formed at the boundary between mutually adjacent surfaces of the paper cutting waste block, at least along one or more corners in a direction inclined at a predetermined angle or parallel to the compression direction, the corners of the corners A method of forming a paper cutting chip block of paper cutting chips, wherein a chamfered portion is formed so as to drop. 3. An apparatus for compressing paper cuttings obtained by cutting paper to form a paper cutting block, wherein the paper cuttings are compressed in an inner surface of a compression chamber for compressing the paper cuttings and / or in the compression chamber. Along the one or more corners formed at the boundary between the mutually adjacent surfaces of the paper cutting waste block after compression on the pressing surface of the pressing member that performs a compressing action on the pressing member, the corner of the corner is dropped. An apparatus for compressing paper cuttings, wherein a chamfering portion for forming a chamfered portion is formed. 4. A device for forming a paper cutting chip block by compressing paper cutting chips obtained by cutting paper, wherein the compression chamber accommodates the paper cutting chips, and is relatively movable in the compression direction into the compression chamber. And a pressing member that compresses the paper cutting chips in the compression chamber, and is formed on an inner surface of the compression chamber at a boundary between mutually adjacent surfaces of the paper cutting chips after compression. Along with at least one edge extending at least in parallel with the compression direction, a chamfering portion for imparting a chamfer to reduce the corner of the edge is formed parallel to the compression direction, and On the outer surface of the pressing member, a pressing-side corresponding surface corresponding to the chamfering application portion of the compression chamber is formed in parallel with the compression direction, and the inner surface of the compression chamber and the pressing member in a cross-sectional shape perpendicular to the compression direction. With the outside An apparatus for compressing paper cutting waste, wherein the both are fitted correspondingly. 5. A cutting device for cutting paper, a transport device for feeding the cut paper chips to a compression device, and the compression device according to claim 3 for compressing the paper chips. Shredder characterized by that.