JPS6028489Y2 - Paper guide device in shredder - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a paper guide device in a shredder.

A conventional shredder has an opening 3 formed in a top plate 2 of a box-shaped frame 1, as shown at 1 to 10 in FIG.
and a pair of cutter rollers 4 and 5 disposed at the lower part of the box-shaped frame 1. A paper feeding endless belt 6 is provided diagonally between the paper feeding endless belt 6, a reversing roller 7, and an auxiliary roller 8.
The paper is fed to the meshing portion of the cutter rollers 4 and 5 in cooperation with the shredder drive motor 9, and when shredding is impossible, the shredder drive motor 9 is reversed to return the paper to the opening 3. Therefore, the paper that cannot be shredded and is returned to the opening 3 may enter the box-shaped frame 1 through the gap between the rear edge 10 of the opening 3 and the endless paper feeding belt 6, which is inconvenient. .

In order to eliminate the above-mentioned disadvantages, the present invention includes a plurality of endless paper feeding belts 6 arranged in parallel at intervals, and an opening of the box-shaped frame 1. A plurality of guide plates 11.・・・・・・
. is shaped like a fork, and each guide plate 11 is arranged on the inner surface of the paper feeding endless belt 6, .
It is inserted below the top surface of...

The cutter rollers 4 and 5 have a motor pulley 12, a belt 13, a first pulley 15 provided on the rotating shaft 14 of the cutter roller 4, and an interlocking gear 17 provided on the rotating shaft 14 and the rotating shaft 16 of the cutter roller 5. It is designed to be driven by .18.

The driving roller 19 and the driven roller 20 of the paper feeding endless belt 6 are attached to rotating shafts 21 and 22 at a distance, respectively, and a second pulley 23 provided on the rotating shaft 14 and a pulley 24 provided on the rotating shaft 21 and belt 25 drive endless paper feeding belts 6, . . . .

The reversing roller 7 is attached to the rotating shaft 26 at intervals via a one-way clutch (not shown), and is connected to the rotating shaft 26 by a pulley 27 provided on the rotating shaft 26, a third pulley 28 provided on the rotating shaft 14, and a belt 29. The reversing roller 7 is driven.

The auxiliary rollers 8 are attached to the rotating shaft 30 at intervals, and the auxiliary rollers 8. . . . is adapted to rotate in pressure contact with the paper feeding endless belt 6, .

In addition, 32, 33 is a scraping plate, 34 is a paper film inlet, 35 is a paper presser plate spring, 36 is a paper detection plate, 37 is a guide plate, 38
is a microswitch built into the control circuit of the motor 9.

Next, the operation of the present invention will be explained.

When a start switch (not shown) is pressed to start the shredder drive motor 9, the cutter rollers 4 and 5, the endless paper feed belt 6,..., the reversing roller 7, and the auxiliary roller 8 are activated as shown in FIG. are rotated in the directions of arrows by the drive mechanism shown in FIG.

Next, when papers such as discarded documents are thrown all at once into the paper membrane inlet 34 from the opening 3 of the box-shaped frame 1, several papers are transferred to the paper pressing plate spring 35 by the endless paper feeding belt 6, . . .
is pushed up and sent to the reversing roller 7.

Through the cooperation of the reversing roller 7, the paper feeding endless belt 6, . . . , the guide plate 37, and the auxiliary roller 8, the paper is transferred to a pair of cutter rollers 4, several sheets at a time within the capabilities of the cutter and motor. It is supplied to the engaging part 5, is shredded, and falls through the lower opening 39 of the box-shaped frame 1 into a container (not shown).

Paper or cardboard with staples attached to roller 4.5
When the electric current is supplied to the meshing portion of the motor 9 and becomes impossible to shred, a conventionally known motor control circuit (not shown) detects an increase in the current value generated in the motor 9, and the motor 9 is automatically reversed.

Or press the reverse switch to reverse the motor after the motor stops automatically.

At this time, the paper presser plate spring 35 is lifted by the following paper, and the reversing roller 7 is not reversed by the one-way clutch.

For paper that cannot be shredded, there is an endless paper feed belt 6 that rotates in reverse.
..., the inside of the paper film entrance 34 is returned toward the opening 3 by the cooperation of the auxiliary roller 8, the guide plate 37, and the reversing roller 7.

A plurality of guide plates 11.・・・・・・
... is shaped like a fork, and each guide plate 11 is arranged within the interval between the paper feed endless belt 6, ..., and the tip of each guide plate 11 is connected to the paper feed endless belt 6, ...
...Since the paper is inserted below the top surface, when the paper that cannot be shredded is returned as described above and discharged out of the opening 3,
Guide plate 11. By being guided by..., the rear edge 10 of the opening 3 and the endless paper feeding belt 6,...
It does not enter into the box-shaped frame 1 through the gap between...

As can be easily understood from the above explanation, according to the present invention, when discarded documents contain items that cannot be shredded and cannot be shredded, the shredder drive motor is reversed and shredded. When uncut paper is ejected from the opening of the box-shaped frame, a fork-like shape is formed at the rear edge of the opening.
In addition, a guide plate placed within the interval between the paper feed endless belt 6, etc. ensures that the paper enters the box-shaped frame from the gap between the rear edge of the opening and the paper feed endless belt. Therefore, the inconvenience mentioned at the beginning can be eliminated.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal sectional side view of a shredder equipped with the paper guide device of the present invention;
FIG. 2 is a partially cutaway plan view of the shredder, and FIG. 3 is a schematic diagram of the drive mechanism. 1: Box-shaped frame, 2: Top plate, 3: Opening, 4.5: Cutter roller, 6: Endless paper feed belt, 7: Reversing roller, 8: Auxiliary roller, 9: Shredder drive motor, 1
0: Trailing edge, 11 guide plates.

Claims (1)

[Claim for Utility Model Registration] An endless paper feeding belt is diagonally provided between an opening formed in the top plate of a box-shaped frame and a pair of cutter rollers disposed at the bottom of the box-shaped frame, The endless belt cooperates with a reversing roller and an auxiliary roller to feed the paper to the meshing portion of the cutter roller, and when shredding is not possible, the shredder drive motor is reversed to return the paper to the opening. In the shredder, the paper-feeding endless belt is formed into a plurality of paper-feeding endless belts arranged in parallel at intervals, and a plurality of guide plates are shaped like forks at the rear edge of the opening of the box-shaped frame, 1. A paper guiding device for a shredder, characterized in that each guide plate is arranged on the inner surface of the paper feeding endless belt, and the tip of each guide plate is inserted below the upper surface of the paper feeding endless belt.