JPS5943118Y2 - Device to prevent diamond-shaped cutting of accumulated paper - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a diamond-shaped cutting prevention device for stacked paper that prevents stacked paper from being cut diagonally and cut into diamond shapes.

Conventionally, in this type of cutting device, if the stacked paper is misaligned and cannot be set accurately, it becomes diagonal from the specified position and becomes diamond-shaped.
Since there is no device to completely prevent this, the operator must monitor the stack before setting it to ensure that it does not become slanted.
Alternatively, it is necessary to make an inspection sound to sample all items that have been set incorrectly, such as after cutting, making the work extremely complicated.

Therefore, recently some prefectures have been equipped with a detector that detects in advance at this diamond-shaped set position, but since the detector is installed alone in this type, the detection accuracy is poor and it is difficult to carry out the actual funeral. There were drawbacks such as not being accurate.

This invention eliminates the drawbacks of the above-mentioned conventional methods and provides a device for preventing diamond-shaped cutting of stacked paper, which can detect with high precision whether or not the stacked paper is set in a diamond shape before being cut. This is the entire purpose.

This invention will be explained with reference to an embodiment shown in the drawings.

FIG. 1 shows a plan view of the device according to this invention.

In FIG. 1, reference numeral 1 denotes a cutting table for cutting the stacked paper 2. This cutting table 1 has side plates 34 on both sides for setting the stacked paper 20 in contact with one side, and a vertical hole in the center of the stack on the rear surface. Five push-out plates are provided which can be moved forward by two stacked paper stacks by sliding in guide grooves 4 provided.

In addition, on the front surface of the cutting table 1, there is a cutting section 7 that can cut the stacked papers at predetermined intervals in the horizontal direction of the two stacks with a cutting blade 6 that moves up and down, that is, at cutting positions indicated by broken lines A, 8, and 8 in the figure. This cut paper receiver is provided in a sliding receiving section 8.

In addition, in the stacked paper 2, as shown in the diagram, the stacked paper cut to the left is the stacked paper that has been set correctly, and the stacked paper cut to the right is the stacked paper that has been set in a so-called diamond shape. .

Further, on the side plate 3, a plurality of proximity sensors 9 and the same number of phototubes 10 are arranged in parallel at predetermined intervals, that is, near each cutting position of the stacked paper 2, and the same number of phototubes 10 are arranged on the extrusion plate 5. A proximity sensor 9 and a phototube 10 are arranged in parallel near a position on one side of the stack 20 that is not in contact with the stack. It is designed to be detected.

The proximity sensor 9 has a pneumatic pressure sensor, and as shown in FIG. 2, it has an output port located almost in the center, and a spherical nozzle 12 that blows out the entire air flow outside of the output port. Furthermore, all the exhaust ports 14 are placed on the outside measurement, and the detection port is placed above the output port 11) 1s! The detection port 15 is connected to the output port 11, the supply port 13 and the exhaust port 14, and the air supplied from the supply port 13 is ejected from the full annular nozzle 12, Part of the chamber is evacuated from the exhaust port 14, and a negative pressure space 16 is formed in the detection port portion.

When the stacked paper 2, which is the detection object, approaches the detection reference surface
The entire pressure change at this time is amplified by a negative pressure amplifier (not shown) and taken out as a control signal.

As mentioned above, the proximity sensor 9 has a negative pressure space 1 at the detection port.
6, and installed on the detection reference plane As a result, the detection distance 4 is significantly short and it is possible to detect with high accuracy.

That is, when the detection distance at the position of point B is 0.1 to 0.5 mm, the stacked paper 2 at cutting position A can be cut with an accuracy equal to or less than this number.

On the other hand, the phototube 10 has a longer detection distance than the proximity sensor 9, and its sensitivity is set so that it can sufficiently detect the stacked paper 2 at least at the position of point B in FIG.

Then, when the stacked paper 2 is pushed forward by the pushing plate 5 and removed from the position of the B-J line, the photocells 1 that are disposed side by side are broken.
0Kk is controlled to cut all signals of no output from the proximity sensor 9.

In addition, as mentioned above, the proximity switch 9 and the phototube 10 are arranged side by side on the side plate 3 side. For example, when cutting the stacked paper at the position A, the proximity switch 9 and the phototube 10 at points E and D are arranged side by side.
However, the accuracy is not good, and if it is detected at all C or B points, the amount of deviation at D or E points will be greatly expanded at B points, and the accuracy will improve accordingly. It is.

Therefore, the accuracy will be best if the proximity switch 9 and phototube 10 at the point farthest from point E operate.

In addition, since the proximity switch 9 of the push-out plate 5 and the phototube also detect the entire amount of deviation of the stacked paper 2 on the discharge and contact side, the diamond-shaped set of the stacked paper 2 can be reliably detected.

The signals from the proximity switch 9 and the phototube 10 arranged in parallel in this way are used to completely control the prohibition of cutting, and also to display an alarm if necessary.

In addition, in the above embodiment, the proximity switch 9 and the phototube 1 are
What is provided on the gold side plate 3 and extrusion plate 5 is also shown.
The present invention is not limited to this, and it may be provided on the side plate and members near the extruded root, and in short, it may be provided on the side and rear surfaces.

This idea is as described above, and uses a phototube and a proximity sensor KL, which are installed in parallel on the sides and rear of the stacked paper metal, to detect the presence or absence of the stacked paper and the entire distance to the stacked paper. It is possible to accurately detect L position deviations such as diagonal deviation of the paper before cutting, and therefore, diamond-shaped cutting of the stacked paper can be completely prevented.

Moreover, when the proximity sensor detects the distance to the stacked paper, when the phototube detects that there is no stacked paper, the proximity sensor of that part is not activated.In other words, the proximity sensor of the phototube part that detects the presence of stacked paper Since the sensor is designed to operate only when the stacked paper moves at the set position, it is possible to detect misalignment of the stacked paper, which occurs when only a proximity sensor is provided without a phototube as described above. This has an excellent effect 2 in that it is impossible to distinguish between the object and the object whose positional shift has not been detected.

[Brief explanation of drawings]

The drawings show an example of this invention, and Figure 1 is an overall plan view.
FIG. 2 is a sectional view of the proximity sensor. 1... Cutting table, 2... Stacked paper, 3...
...Side plate, 4...Guide groove, 5...
Extrusion plate, 9... Proximity sensor, 10...
・Phototube.

Claims (1)

[Scope of utility model registration request] In a device that cuts 4 stacks of paper, there are a plurality of proximity sensors that detect the entire distance to the stack at predetermined intervals on the measuring surface and rear surface of the position where all the stacks of paper are set, and a plurality of proximity sensors that detect the entire distance to the stack of paper at a predetermined interval. A diamond-shaped cutting prevention device for stacked paper is characterized in that photoelectric tubes are arranged side by side to detect the presence or absence of paper, and when the phototubes detect the absence of paper, all the proximity sensors in that part are not activated.