JPH06405A - Shredder - Google Patents

Abstract

PURPOSE:To provide a highly safe shredder to finely shred piled paper documents and wrinkled and bulky paper documents. CONSTITUTION:A shredder contains a conveyer belt 4 and a cutter means 5, which is set in the down stream side, in the body of the shredder and a slit-like throwing inlet 7 and a cover 8 pivotable upward are installed in an open part 6a formed above the conveyer belt 4. One side, the longer side edge, of the slit-like charging inlet 7 is composed of the pivoting tip edge part 10 of the cover 8 and at the same time a stopping means to stop the conveyer belt 4 and the cutter means 5 when the cover 8 pivots upward is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact and highly safe shredder for cutting stacked paper or bulky paper due to wrinkles into fine pieces.

[0002]

2. Description of the Related Art Conventionally, in offices and the like, shredders have been used for cutting papers such as documents into small pieces for the purpose of security protection. In recent years, in order to perform the cutting operation more quickly, there has been provided a shredder capable of cutting papers having a considerable thickness at one time. As this type of shredder, there is known a shredder in which a conveyor belt and a cutter means provided on the downstream side of the conveyor belt are housed in the main body of the apparatus, and an introduction portion is provided on the upstream side of the conveyor belt.
The papers input from the input section are conveyed to the downstream side by a conveyor belt, and then finely cut by a cutter means composed of a pair of interlocking cutters, and the cutting waste obtained by cutting is dropped downward and cut. It is stored in the waste container.

The above-mentioned throwing-in section has a wide opening so that thick papers can be thrown in at one time, and as a safety means for preventing accidents involving a worker's hand, the throwing-in section is provided only on the front face of the apparatus, and the cutter means from the throwing-in section The distance of the conveyor belt to is longer than the total length including the arm and hand of an adult. At the same time, the height of the insertion part is set to the height of an adult's chest so that the upper half of the body of the worker cannot be bent and the tip of the worker's hand does not reach the cutter in any case. On the other hand, there is also known a shredder that simultaneously stores the papers in the trash box and cuts them into fine pieces. This type of shredder is provided with a special chute for loading on the upper part of the main body, and bulky papers due to wrinkles are dropped into the shredder from the top at the same time and thrown in and cut. Since such a device can prevent the hand from being caught by the chute, the above-mentioned safety means are not provided. There is also known a dual-purpose shredder capable of cutting papers piled up in a considerable thickness at one time and finely cutting bulky papers. Such a shredder is provided with a throw-in section for throwing papers on the front side of the upper part of the main body, and a chute for dropping bulky papers due to wrinkles on the back side.

[0004]

In any case, however, such a conventional shredder is large in size, has a drawback that it requires a large installation space, and paper feeding is troublesome. Further, the dual-purpose shredder has a problem in that the slit-shaped insertion port and the chute need to be separately provided at different positions, which complicates the apparatus and increases the cost. Further, since the chute is provided on the main body, the whole apparatus becomes high, which causes a problem in aesthetic appearance of the office. Therefore, in view of such problems of the conventional shredder, the present invention has an object to provide a shredder that can safely cut stacked papers and the like with a simple structure, and that is compact and has excellent appearance. .

[0005]

A shredder of the present invention for solving the above-mentioned problems accommodates a conveyor belt and a cutter means provided downstream thereof in a main body. A slit-shaped insertion port and a cover that is rotatable upward are provided in an opening provided above the conveyor belt. Further, one long side edge of the slit-shaped insertion opening is formed by a rotation leading edge portion of the cover, and stop means for stopping the conveyor belt and the cutter means when the cover is rotated upward is provided. It is characterized by that.

[0006]

When the papers stacked in the shredder of the present invention are cut, the slits are used to insert the papers. Further, when cutting the bulky paper in the trash box, the cover is rotated and opened upward, so that the paper is loaded into the loading port formed in the opening. The slot is formed in such a manner that one long side edge of the slit slot is removed by rotating the cover and the slit slot is enlarged along the conveyor belt. It When turning the cover upward,
That is, when the cover is separated from the main body upward, the stop means is activated to stop the conveyor belt and the cutter means, thus ensuring work safety. In addition, when the stacked hands are thrown in through the slit-shaped throw-in port and the operator's hand is mistakenly inserted, the cover is pushed upward by the hand to rotate and the stop means is activated. Stop the conveyor belt and cutter. Further, when the cutting operation is not performed, the cover is rotated upward to open it, so that it is possible to inspect the transport belt and remove a paper jam.

[0007]

Embodiments of the present invention will now be described with reference to the drawings.
FIG. 1 is a sectional view showing an example of the shredder of the present invention. A cutting section 2 is provided in the upper part of the main body 1, and a cutting waste accommodating section 3 is provided in the lower part. The conveyor belt 4 is provided at the cutting section 2.
And a cutter means 5 disposed on the downstream side thereof, and further, an opening 6a is provided on the top plate 6 of the main body 1 above the conveyor belt 4, and an opening 7 is provided by utilizing the opening 6a. There is. The insertion port 7 has a rectangular slit shape extending in a slender shape in the vertical direction of the drawing, and the width thereof is set to be wider than the thickness of the hand, for example, about 50 mm.

A cover 8 is provided adjacent to the inlet 7 so as to cover the remaining portion of the opening 6a of the top plate 6 of the main body 1. The cover 8 can be rotated upward as indicated by an arrow with the hinge portion 9 as a fulcrum, and a tip portion 10 of the rotation is provided with a bent portion 11 bent downward at an acute angle. The pivoting tip edge 10 forms one long side edge of the slit-shaped charging port 7, and the bent portion 11 is parallel to one charging guide 12 on the long side of the charging port 7 and the other. Acting as a loading guide. The height of the cover 8 is preferably equal to or slightly lower than the height of the waist of an adult. This height is equivalent to the general height of copying machines for offices. That is, the workability of inserting paper is the highest. Next, the cutter means 5 has a pair of cutters 13 that mesh with each other, and a gear 14 provided on the shaft of one of the cutters 13 has a gear 16 provided on the output shaft of a drive source 15 that rotates at a low speed such as a reduction motor. And chain 1
7 are linked together.

The conveyor belt 4 has an endless belt 19 engaged with a pair of pulleys 18 and a flat guide plate 20, and the endless belt 1 is provided along the guide plate 20.
9 is guided. Further pulley 18
An endless belt 21 is engaged with one of the ends, and the endless belt 21 is engaged with a pulley 22 provided coaxially with the gear 14. Endless belt 19
Is engaged with a plurality of idler pulleys 23 provided to maintain the tension. Further, the transport length of the endless belt, that is, the length from the insertion port 7 on the upper surface of the belt to the cutter may be longer than that of the fingertip of an adult to the wrist. Next, the top plate 6 at the edge of the opening 6a is provided with a stop means 24 which is an electrical switch such as a limit switch or an optical sensor. This stopping means 24
Operates when the cover 8 is pivoted upward and separated from the top plate 6. Then, the drive signal 15 is stopped by the stop signal, and the conveyor belt 4 and the cutter means 5 are stopped.

The shredder shown in FIG. 1 can be provided with an inching switch 25 as shown by a dotted line if necessary. The inching switch 25 is attached to, for example, a side surface of the main body 1, and by operating the cover 8 with the cover 8 rotated upward, the drive source 15 can be moved in a small amount for an internal inspection or the like. Further, at a position adjacent to the conveyor belt 4 of the cutter means 5, as means for smoothly guiding the object to be cut to the cutter means 5,
For example, a flywheel for guidance may be provided.

Next, the operation of the shredder shown in FIG. 1 will be described with reference to FIGS. FIG. 2 shows a state in which objects 30 to be cut, which are stacked papers, are input using the slit-shaped input port 7. When the object to be cut 30 detects that the object to be cut 30 has been inserted into the input port 7, a drive signal is output from the drive source 15 from the detection means. As a result, the drive source 15 is driven, and the operation of the conveyor belt 4 and the cutter means 5 is started. When the cut object 30 passes and the detection state of the cut object detecting means ends, the drive source 15 is stopped after the time set by the timer has elapsed. Sufficient time is set for this timer in order to finish cutting the object to be cut. When the object 30 to be cut, which is thicker than its width, is forced into the insertion port 7, the cover 8 is pushed upward by the end of the object 30 to rotate, whereby the stopping means 24 is actuated and driven. Stop the source 15 immediately.

FIG. 3 shows a state in which the hand is mistakenly inserted deeply into the inside of the input port 7 when the object 30 to be cut is input from the input port 7. Since the width of the slit is set to be slightly larger than the thickness of the hand as described above, it is generally only inserted up to the wrist, and the cutter means 5 is used for the conveyor belt 4.
There is no danger because it is charged and separated from it. However, when the hand is pushed further as shown in FIG. 3, the cover 8 is pushed up and rotated by the pushed hand, whereby the stop means 24 is operated and the drive source 15 is stopped. In FIG. 4, the cover 8 is rotated upward as indicated by an arrow, and the bulky papers 31 stored in the trash box are thrown into and cut from the opening formed in the upper portion of the conveyor belt 4 thereby. It is in a state of being. Since the drive source 15 is stopped by the stop signal of the stop means 24 output by the rotation of the cover 8, the conveyor belt 4 and the cutter means 5 do not operate.

The cover 8 after the loading of the object 31 to be cut is completed.
As the stop signal of the stop means 24 is ended by returning the signal, the drive source 15 is activated by the detection signal from the object detecting means provided near the conveyor belt 4, and the conveyor belt 4 and the cutter means 5 are activated. Operates as in case 2.
If the amount of the cut object 31 is excessive, the cover 8
Is not completely restored, and the stop signal of the stopping means 24 remains continuous, so that the drive source 15 is not activated. In that case, the material to be cut 31 may be adjusted to an appropriate amount and then the cover 8 may be returned again.

[0014]

The shredder of the present invention constructed as described above has the following effects. (1) Since the slit-shaped insertion opening and the cover that rotates upward are provided in the opening provided above the conveyor belt, and one long side edge of the insertion opening is formed by the rotation leading edge portion of the cover. The shredder can selectively cut both stacked papers with a simple structure and bulky papers from a trash box or the like. (2) With the above-described structure, the shredder can be made compact in size and excellent in appearance. (3) Since the stop means for stopping the conveyor belt and the cutter means when the cover is rotated upward is provided,
From the wide opening obtained by rotating the cover upward,
Bulky paper can be loaded safely. (4) Since the stopping means as described above is provided, when the stacked papers are inserted from the slit-shaped input port, the hand is forcibly inserted from the input port, or the papers having the predetermined thickness or more. When is turned on, the conveyor belt and the cutter means can be deactivated. Also, rotate the cover upwards,
When a large amount of paper due to wrinkles is thrown in through its opening, the cover is not restored and the conveying belt and the cutter means can be deactivated by the stopping means.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view showing a usage state of the shredder shown in FIG.

FIG. 3 is a cross-sectional view showing another usage state of the shredder shown in FIG.

FIG. 4 is a cross-sectional view showing still another usage state of the shredder shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Cutting part 3 Cutting waste accommodating part 4 Conveyor belt 5 Cutter means 6 Top plate 6a Opening part 7 Input port 8 Cover 9 Hinge part 10 Rotating tip edge 11 Bending part 12 Input guide 13 Cutter 14 Gear 15 Drive source 16 Gear 17 Chain 18 Pulley 19 Endless belt 20 Guide plate 21 Endless belt 22 Pulley 23 Idler pulley 24 Stopping means 25 Inching switch 30 Object to be cut 31 Object to be cut

Claims (1)

[Claims] 1. A shredder in which a conveyor belt 4 and a cutter means 5 provided on the downstream side of the conveyor belt 4 are accommodated in a main body 1 and an inlet for an object to be cut is provided above the conveyor belt 4, An opening 6a is provided above the belt 4, a slit-shaped insertion port 7 and a cover 8 which is rotatable upward are provided in the opening 6a, and one long side of the slit-shaped insertion port 7 is provided. The edge is formed by the rotation leading edge portion 10 of the cover 8, and the stop means 24 for stopping the transport belt 4 and the cutter means 5 when the cover 8 is rotated upward is provided. Shredder characterized by.