JPH0631190A - Shredder - Google Patents

Abstract

PURPOSE:To safely shred the heaped papers or bulky papers due to corrugation by providing a slit inlet at the side part on the upstream side of a conveyor belt and a cover freely rotatable upward at the upper part. CONSTITUTION:An opening 6a is provided on a conveyor belt 4 and on the side on the upstream side, and a slit inlet 7 is furnished on the side part of the opening and a cover 8 freely rotatable upward on the upper part of the opening. The upper long side edge of the inlet 7 is formed by the rotating tip edge 10 of the cover 8, and a means 24 is provided to stop a cutter means 5 when the cover 8 is turned upward. When the heaped papers are cut, the papers are charged from the inlet 7. Meanwhile, when bulky papers in a trash box are cut, the cover 8 is turned upward, and the papers are charged from the inlet in the opening 6a.

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, a shredder is also known in which bulky paper such as paper in a trash box due to wrinkles is simultaneously stored and finely cut. 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. And openings are provided above and on the upstream side of the conveyor belt,
A slit-shaped insertion port is provided at a side portion thereof, and a cover that is rotatable upward is provided at an upper portion thereof. The upper long side edge of the slit-shaped insertion opening is formed by the rotation leading edge portion of the cover, and the stopping means for stopping the cutter means when the cover is rotated upward is provided. It is a feature. The presence of the slit-shaped input port in the side portion in the above configuration includes both the case where the input port is present on the front surface of the shredder and the case where it is present on the side surface.

[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 removed by rotating the cover at the upper long edge of the slit-shaped slot, and the slit-shaped slot is located above the conveyor belt from the upper side on the upstream side of the conveyor belt. It is formed so as to be expanded along it. When the cover is rotated 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, thereby 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. The conveyor belt and the cutter means are stopped. Further, when the cutting operation is not performed, the cover is pivoted upward and opened, so that the inspection on the conveyor belt and the removal of the paper jam can be performed.

[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 arranged on the downstream side thereof, and further, an opening 6a is provided from the top plate 6 of the main body 1 above the conveyor belt 4 to the upper part of the side plate 26 located on the upstream side of the conveyor belt 4. Has been. The charging port 7 is provided by utilizing the side portion thereof, that is, the upper portion of the side plate 26. 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 side of the belt to the cutter may be longer than that of the fingertip of an adult to the wrist. Next, the frame at the edge of the opening 6a is provided with a stop means 24 which is an electric switch such as a limit switch or an optical sensor. The stopping means 24 is activated when the cover 8 is rotated upward and separated from the frame. The drive source 1 is driven by the stop signal.
5 is stopped, and the conveyor belt 4 and the cutter means 5 are stopped. The mounting position of the stopping means 24 is
The present invention is not limited to the embodiment, and in short, it may be arranged or configured so that the rotation of the cover 8 can be detected.

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. 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. As a result, the drive source 15 is driven, and when the power is turned on, the operation of the conveyor belt 4 and the cutter means 5 is started. When the object 30 to be cut, which is thicker than the width thereof, is forced into the insertion port 7, the cover 8 is pushed upward by the end of the object 30 to rotate and thereby the stop means 24 operates. The drive source 15 is immediately stopped.

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. When the object 31 to be cut, which is a bulky piece of paper stored in the trash box, is inserted and cut, as shown in FIG.
Is rotated upward as indicated by an arrow, and bulky papers are put in through the opening formed above the conveyor belt 4. At that time, the drive source 15 is in a stopped state by the stop signal of the stop means 24 output by the rotation of the cover 8, so that the conveyor belt 4 and the cutter means 5 do not operate.

Next, when the cover 8 is returned after the insertion of the object to be cut 31 is completed, the stop signal of the stop means 24 is terminated, so that the drive source 15 is activated and the conveyor belt 4 and the cutter means 5 are moved to the position shown in FIG. Works as in. If the amount of the object 31 to be cut is too large, the cover 8 is not completely restored and the stop signal of the stop means 24 remains so that the drive source 15 does not start. In that case, the object to be cut 3
The cover 8 may be returned again after adjusting 1 to an appropriate amount.

[0014]

The shredder of the present invention constructed as described above has the following effects. (1) A slit-shaped insertion port at the side portion of the opening provided on the upper side and the upstream side of the conveyor belt, a cover that rotates upward at the upper portion, and an upper length of the insertion port. Since the peripheral edge is formed by the rotating front edge of the cover, it is possible to provide a shredder capable of selectively cutting 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 stopping means for stopping the cutter means when the cover is rotated upward is provided, it is possible to safely secure the bulky papers from the wide opening obtained by rotating the cover upward. Can be thrown into. (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. The cutter means can be deactivated when is turned on. In addition, when the cover is rotated upward and the bulky paper due to wrinkles is thrown in through the opening, the cover is not returned if an excessive amount is thrown in, and the cutter means may be deactivated by the stop means. it can.

[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 26 Side plate 30 Cut object 31 Cut object

Claims (3)

[Claims] 1. A main body (1) contains a conveyor belt (4) and a cutter means (5) provided on the downstream side of the conveyor belt (4), and an inlet for an object to be cut is provided above the conveyor belt (4) and on the upstream side. In the shredder, openings 6a are provided above and upstream of the conveyor belt 4, a slit-like insertion port 7 is provided at a side portion thereof, and a cover 8 that is rotatable upward at an upper portion thereof. Are provided, the upper long side edge of the slit-shaped insertion port 7 is formed by the rotation leading edge portion 10 of the cover 8, and the cover 8 is provided.
A shredder characterized in that stop means 24 is provided for stopping the cutter means 5 when the cutter rotates upward. 2. The stopping means 24 according to claim 1.
Is a shredder that stops the conveyor belt 4 as well as the cutter means 5. 3. The shredder according to claim 1 or 2, wherein the opening 6a is continuous from above the conveyor belt 4 to the side on the upstream side.