JPH0685885B2 - Shredder processing device for document shredder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a document shredding machine for shredding important documents (including drawings) at the time of disposal. The present invention relates to a shredder processing apparatus that diffuses inside and increases the amount of shredded chips filled in a container.

<Prior Art> The following publications are known as technologies related to the conventional shredder processing apparatus.

(B) Leveling method: No. 50-88988, No. 49-28303
No., (b) Compression method: Jikkō Sho 55-52915, (c) Vibration method: Jikkō Sho 60-186032, Jikkai Sho 61-6434
No. 5, (d) Distribution method: Jitsuko Sho 49-28303, Jitsukai Sho 61-13973
No. 9, (e) Other methods: No. 51-61772, No. 57-115
No. 650, No. Shokai 61-64344, and the following are known as the technology related to the fullness detector.

(A) When piles of shredded scraps are piled up high, the top of the pile hits the detection plate above the shredded scrap container, and the detection plate swings to operate the switch.

(B) The pile height of shredded waste is detected by optical sensors provided on the left and right of the shredded waste container.

(C) The weight of the shredded chips is detected.

As described above, there is a conventional technique for processing shredded chip diffusion and full detection by different means.

<Problems to be Solved by the Invention> However, in each of the above configurations, there is a problem that the cost is high or the effect of diffusing chips is small.

In addition, since the different devices are used to disperse the shredded waste and to detect the fullness, the total cost becomes very high.

Therefore, a first object of the present invention is to provide a shredder waste treatment apparatus which is low in cost and / or has a large shredder waste diffusion effect.

A second object of the present invention is to provide a shredder processing apparatus which can perform shattering chip diffusion and full detection in the same device, resulting in a very low total cost.

<Means for Solving Problems> A means for solving problems according to the present invention is, as shown in FIGS. 1, 2, and 3, a document shredder main body 1, a pair of cutters 3 incorporated in the main body 1, and Cutter rotating device 4 for rotating the cutter 3
And a shredder waste container 6 disposed below the shredder waste discharge port 5 of the cutter 3, the document shredder is provided with a shredder at the same level as the upper edge 6a of the shredded waste container 6. A rotatable diffusion blade 8 for diffusing the chips B is provided, and a blade driving means M2 (blade motor) for rotating the diffusion blade 8 independently of the cutter rotating device 4 and the blade driving means M2. A driving circuit D for driving is provided.

Then, the drive circuit D includes a load detector T for detecting the load (load current) of the blade drive means M2, and the load detector T increases the current flowing through the blade drive means M2. When it is detected, an output means C is provided for displaying the fullness of shreds on the display 14 and stopping the rotation of the blade driving means M2 and the cutter rotating device 4.

<Operation> In the means for solving the above problem, the pile B1 of the shredded waste B in FIG.
As shown in the plan view, the shredded chips B dropped from the discharge port 5 fall and accumulate in the shredded chip container 6, and the top B2 thereof is scraped off by the diffusion blades 8 and carried by the rotational force of the diffusion blades 8. , Averaged. Then, as the shredding continues, shredded scraps B fall
Due to the diffusion effect of the diffusion blades 8 gradually enters the space portion in the shredded waste container 6 where the shredded waste B does not enter, the space portion gradually decreases, and the shredded waste B that hits the diffusion blade 8 also At first, the oval portion shown by B2 in FIG. 2 was used, but as the amount of shredded chips B accumulated increased, shredded chips B were formed on the entire blade 8 like a circle shown by B3 in FIG. You will hit.

As a result, the contact resistance of the diffusion blade 8 that hits the peak B2 of the shredded waste B increases, and the load on the blade driving means M2 increases,
The current flowing through the blade drive means M2 increases.

The above-mentioned increase in current is detected by the load detector T, judged by the control circuit C, and when a current of a certain value or more flows for a certain period of time, the blade driving means M2 and the shredding motor M1 are relayed via the relays L1, L2. To stop the rotation of the
Lights up or blinks.

<Example> Hereinafter, an example of the shredded waste processing device of the present invention will be described with reference to the drawings. First, the first embodiment of the present invention will be described with reference to FIGS. 1, 2, and 3. FIG. 1 is a vertical sectional side view of a document shredder having the first embodiment of the present invention, and FIG. The plan view and FIG. 3 are also block diagrams of the electric circuit.

The document shredder of the present invention is a container-shaped shredder body 1
And a shredded paper feeding device 2 formed on the top of the main body 1,
A pair of roller-type cutters 3 installed inside the main body 1 below the supply device 2, a cutter rotation device 4 for rotationally driving the cutter 3, and a shredder waste discharge port 5 of the cutter 3 are disposed below the cutter rotation device 4. A shredded waste container 6 and a door 7 formed in the lower portion of the main body 1 for loading and unloading the shredded waste container 6 are provided.

A diffusion blade 8 for diffusing the shredded chips B is provided at substantially the same level as the upper edge 6a of the shredded chip container 6, and a blade driving means for moving the diffusion blade 8 (rotational movement in this embodiment).
M2 (blade motor) and a drive circuit D for driving the blade driving means M2 are provided.

Further, the blade driving means M2 is provided independently of the cutter rotating device 4, and the drive circuit D detects the load (load current) of the blade driving means M2 and detects a value equal to or more than a certain value. If the value exceeds a certain time, the control circuit C
Load detector T for stopping the blade drive means M2 and cutter rotating device 4 when it is judged that the shredded waste B is full.
It is included.

In the present embodiment, the diffusion blade 8 is made of a flat plate having a bent front portion 8a, and its central axis 9 is connected to a motor which is blade driving means M2. The case of the blade driving means M2 is fixed to the intermediate partition plate 1a of the main body 1, and the central axis 9 of the blade driving means M2 is arranged close to the discharge port 5 of the shredded waste B. Further, the shredded paper feeding device 2 is provided with a shredded paper input port 10 and a guide 11 for guiding the shredded paper A to the cutter 3.
And a paper detection switch 12 having a detector protruding from the guide 11, and the cutter rotation device 4 is
It is composed of a shredding motor M1 and a chain 13 connecting the output shaft and the cutter shaft.

Furthermore, in the block diagram of FIG. 3, the drive circuit D is a first relay for turning on / off the shredding motor M1.
L1 and the second relay L2 that turns on / off the blade driving means M2
And a load detector T composed of a current transformer for detecting an overcurrent of the blade drive means M2. These relays L1 and L2 and the load detector T are controlled by a control circuit C composed of a micro computer. . Again 14
Is a full indicator provided on the upper surface of the main body 1.

Next, the operation will be described. Insert shredded paper A at the top of main unit 1.
When it is inserted from 10, it hits the paper detection switch 12, which operates, and the shred motor is controlled by the control of the control circuit C.
M1 and the blade driving means M2 are started, and the cutter 3 and the diffusion blade 8 rotate, respectively. The shredded paper A is cut by the rotation of the cutter 3, becomes chip-shaped cutting scraps B, drops from the discharge port 5 and accumulates in the cutting scrap container 6 along with the piles B1.

When the top portion B2 of the mountain B1 is accumulated to the height of the diffusion blade 8, the blade driving means M2 is operating during the shredding, so that the diffusion blade 8 provided at the tip of the diffusion blade shaft 9 is rotating. Therefore, the top B2 of the mountain B1 is scraped off by the diffusion blade 8.

As shown in the plan view of mountain B1 of shredded waste B in FIG. 2, shredded waste B dropped from discharge port 5 falls and accumulates in shredded waste container 6, and its top B2 is scraped off by diffusion blade 8. Also, it is carried and leveled by the rotating force of the diffusion blade 8. Then, as the shredding continues, the shredded scraps B that fall into the shredded scraps container 6 will gradually enter the space portion where the shredded scraps B are not contained in the shredded scrap container 6 due to the diffusion effect of the diffusion blade 8. The number of parts gradually decreases, and the shredder B hitting the diffusion blade 8 was initially an oval portion shown by B2 in FIG. 2, but as the amount of shredder B accumulated increases,
As shown by the circle B3 in FIG. 2, the shredded waste B comes into contact with the entire blade 8.

As a result, the contact resistance of the diffusion blade 8 that hits the peak B2 of the shredded waste B increases, and the load on the blade driving means M2 increases,
The current flowing through the blade drive means M2 increases.

The above-mentioned increase in current is detected by the load detector T, judged by the control circuit C, and when a current of a certain value or more flows for a certain period of time, the blade driving means M2 and the shredding motor M1 are relayed via the relays L1, L2. To stop the rotation of the
Lights up or blinks.

Further, the door 7 is opened, the shredded waste container 6 is pulled out, the shredded waste B is taken out together with the storage bag set in the shredded waste container 6, and the shredded waste container 6 is replaced with a new storage bag. Insert the door, close the door 7 and operate the reset switch 15. Then both relays L1 and L2 will operate and the blade drive means M
2. Shred motor M1 starts and full indicator 14 goes out.

Next, a second embodiment of the present invention will be described with reference to FIGS. 4, 5 and 6. FIG. 4 is a vertical sectional side view of a document shredder equipped with a second embodiment of the shredded scrap processing apparatus of the present invention. FIG. 5 is a side view of the cutter rotating device and the blade driving means, and FIG. 6 is a plan view of the cutter rotating device.

The second embodiment is a blade driving means for the diffusion blade 8.
M2 is linked with the cutter rotating device 4, in other words, the motor of the blade driving means M2 is also used as the motor of the cutter rotating device 4, and the pile of shredded waste B in the shredded waste container 6 is full. The detection is an example in which a known one such as an optical sensor (not shown) is used.

That is, the central axis 9 of the diffusion blade 8 is rotatably supported by the main body 1, and the bevel gear 16 is fixed to the upper end thereof,
A bevel gear 17a is meshed with the bevel gear 16, and a gear shaft 17 thereof constitutes an interlocking mechanism F by a small spur gear 17b. And, the cutter shafts 19a, 1a having the small gears 18a, 18b fixed to one end
9b, a large spur gear 19c fixed to the other end of the shaft 19b, and a large spur gear 19d meshed with the large spur gear 19c are fixed to the output shaft of the shredding motor M1 to form the cutter rotating device 4. There is.

In the figure, 3 is a pair of concave and convex roller-shaped cutters, and 20 is a cutter frame. Other configurations and operations are similar to those of the first embodiment.

Next, a third embodiment of the present invention will be described with reference to a vertical side view of FIG. 7. This is configured so that the diffusion blade 8 is swung by the motor of the blade driving means M2 independent of the cutter rotating device. It was done.

That is, the left and right ends of the diffusion blade 8 are fixed to the lower end of the arm 21, the middle part of the arm 21 is swingably supported by the main body 1 by the horizontal shaft 22, and the elongated hole 24 is formed in the upper part of the arm 21. A sprocket 26 having a pin 25 fitted in the elongated hole 24 on its outer peripheral portion is rotatably supported by the main body 1. Connected by 28,
Other configurations are the same as those in the first embodiment.

In addition, in the present embodiment, the lower end of the diffusion blade 8 evens out the peaks B2 of the shredded chips B by rocking, and finally the contact resistance (contact) between the diffusion blade 8 and the shredded chips B is reached. The area) increases and a current value of a certain value or more flows into the load detector T for a certain time or more, whereby the fullness of the shredded waste B is detected.
Other functions are similar to those of the first embodiment.

The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

For example, in the present invention, as the blade driving means, a motor for automatically feeding shredded paper of a document shredder or a motor for station may be used, and the rotation speed of the diffusion blade may be changed according to the shredded paper capacity. Alternatively, the number and shape of the diffusion blades may be changed according to the shape of the shredded waste container.

<Effects of the Invention> As is apparent from the above description, the cutter rotating device and the blade driving means are provided independently of each other, and the cutter rotation is detected by detecting the full state of shredded debris due to an increase in the current flowing through the blade driving means. Since the device and the blade drive means are stopped, the cost can be reduced because the cutting dust can be diffused and full detection can be performed by the same device, and the cutter rotating device and the blade drive means are surely stopped when the cutting dust is full. If you can do it, it will be effective.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a document shredder equipped with a first embodiment of the shredded waste processing apparatus of the present invention, FIG. 2 is a cross-sectional plan view of the same, and FIG. 3 is a block diagram of an electric circuit of the same. FIG. 4 is a vertical sectional side view of a document shredder having a second embodiment of the present invention, FIG. 5 is a side view of the cutter rotating device and blade driving means, and FIG. 6 is a plan view of the cutter rotating device. FIG. 7 is a vertical sectional side view of a document shredder having a third embodiment of the present invention. 1: Document shredder body, 2: Feeding device, 3: Cutter, 4: Cutter rotating device, 5: Discharge port, 6: Shredded waste container, 6a: Upper edge, 7: Door, 8: Diffusion blade, 9 : Rotating plate, 10: Rotary shaft, 11: Plate motor, A: Shredded paper, B: Shredded scrap, B1: Deposit pile, B2:
Top part, C: control circuit, D: drive circuit, M2: blade drive means, T: load detector.

Claims (1)

[Claims] 1. A shredder main body, a cutter installed in the main body, and a cutter rotating device for rotationally driving the cutter.
In a document shredder equipped with a shredder container arranged below the shredder discharge port of the cutter, a rotatable rotatable device for spreading the shredder at substantially the same level as the upper edge of the shredder container. A diffuser blade is provided, a blade drive means for rotating the diffuser blade independently of the cutter rotating device, and a drive circuit for driving the blade drive means are provided, and the blade drive means is provided in the drive circuit. A load detector for detecting the load of the blade is included, and when the load detector detects an increase in the current flowing in the blade driving means, the blade drive is indicated by displaying a full of shreds on the display. Means and an output means for stopping the rotation of the cutter rotating device are provided.