JP2017149518A - Sheet separation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet separation device for taking out one sheet from a plurality of stacked or bound sheets, capable of reliably taking out just one sheet at a time.SOLUTION: A sheet separation device performs: a gap generating operation for generating a gap between a top sheet and a second sheet which is positioned directly under the top sheet, by suctioning the top sheet; and a holding operation for holding the top sheet. The gap generating operation and the holding operation are done in a predetermined-time-period-overlapped manner, while a gas can be injected into between the top sheet and the second sheet at just before the start of the predetermined time, or from just before the start of the predetermined time and during the predetermined time.SELECTED DRAWING: Figure 1

Description

The present invention relates to a sheet cutting device that cuts out one sheet from a plurality of sheets or bound sheets. Turning pages of each of a plurality of bound sheets is also a paper cut out in a broad sense and can be included in the present invention.

Conventionally, as an example of a sheet cutting apparatus that cuts out one sheet from a plurality of sheets or bound sheets, there is, for example, Japanese Patent Laid-Open No. 5-186074. As shown in FIG. 7, the first adsorber 10, the second adsorber 11, and the air nozzle 3 are included. The uppermost sheet 5 of the sheet is completely separated by air blow by the air nozzle 3 after being adsorbed by the first adsorber 10 and then moved horizontally by the first adsorber 10 and then the second adsorber. 11 is further moved.

However, in this sheet cutting device, the second sheet 6 immediately below the uppermost sheet 5 is completely removed by the suction by the vertical movement accompanied by the back and forth movement of the first suction unit 10 and the air blowing operation by the air nozzle 3. There was a problem of so-called double feed that could not be separated and cut out the second sheet 6 at the same time. Since the uppermost sheet 5 and the second sheet 6 immediately below the uppermost sheet 5 are brought into close contact with each other in the state where the air layer is removed or due to static electricity, the first adsorber 10 This is because the second sheet cannot be completely separated only by the suction by the vertical motion accompanied by the back-and-forth motion and the air blow by the air nozzle 3. Even when only one uppermost sheet 5 can be separated immediately below the first suction unit 10, the uppermost sheet 5 and the uppermost sheet 5 are separated from the position immediately below the first suction unit 10. When the uppermost sheet 5 is further moved by the second adsorber 11, there is a problem that the second sheet 6 is also attached and cut out at the same time. It was. Further, in the air blow by the air nozzle 3, the air does not enter well between the uppermost sheet 5 and the second sheet 6, and the uppermost sheet 5 and the second sheet 6 are adhered to each other. There has been a problem of so-called double feeding in which the second sheet 6 is cut out simultaneously.

JP-A-5-186074

The problem to be solved is that double feed for simultaneously cutting out the second sheet occurs.

The present invention relates to a sheet cutting apparatus that cuts out a single sheet from a plurality of sheets or bound sheets, and in order to solve the problems in the conventional example as described above, the uppermost sheet is sucked to the top. It has a gap generation operation that generates a gap between the upper sheet and the second sheet immediately below the uppermost sheet and a pressing operation that presses the uppermost sheet. It is performed by overlapping, and gas is caused to flow between the uppermost sheet and the second sheet immediately before or just before the fixed time and over the fixed time.

In order to improve the performance, this pressing operation is characterized in that the uppermost sheet and the second sheet are simultaneously pressed.

In order to improve the performance, the means for adsorbing the uppermost sheet is performed by an adsorber that adsorbs a work using a negative pressure generated by the ejection of gas.

In order to improve performance, when the gas flows between the top sheet and the second sheet, the top sheet and the second sheet directly below the top sheet are in the vicinity of the place where the gas flows. It has the holding means which presses down.

Further, the present invention provides a sheet cutting device that cuts out one sheet from a plurality of sheets or bound sheets, and has a moving operation of moving the uppermost sheet after the gap generating operation described above. A gas is caused to flow between the uppermost sheet and the second sheet over the moving operation immediately before the operation or immediately before the moving operation.

Further, according to the present invention, in a sheet cutting apparatus that cuts out one sheet from a plurality of sheets or bound sheets, a gap is formed between the uppermost sheet and the second sheet immediately below the uppermost sheet. The gap generated by the gap generating operation and the gap generated by the gap generating operation are inserted into the gap and the insertion member is pressed against the second sheet to hold the second sheet and the gap generated. Has a gas inflow operation that allows gas to flow between the upper sheet and the second sheet, and moves the top sheet after the gas inflow operation or during the gas inflow operation. It has the movement operation | movement which carries out.

As described above, in the paper cutting apparatus according to the present invention, the gap that generates the gap between the uppermost sheet and the second sheet immediately below the uppermost sheet by sucking the uppermost sheet. Since the pressing operation for pressing the topmost paper distorts the shape of the topmost paper because the generation operation and the pressing operation for pressing the topmost paper are distorted, the second paper immediately below the topmost paper is similar. Since it works to avoid distortion of the shape, the second sheet can be prevented from sticking to the uppermost sheet. At this time, the gap generation operation and the pressing operation are overlapped for a certain period of time, and gas is allowed to flow between the uppermost sheet and the second sheet for a certain period of time immediately before or just before the certain period of time. Thus, the second sheet can be more easily separated. In particular, by letting gas flow between the uppermost sheet and the second sheet over a certain period of time from just before a certain period of time, this gas inflow works like an airbrush and the second sheet is Separation can be ensured, and a gap generation operation and a pressing operation performed by overlapping for a certain period of time, and a requirement for gas inflow over a certain period of time immediately before a certain period of time can be obtained.
In order to improve the performance, this pressing operation simultaneously presses the top and second sheets to limit the movement of the second sheet in addition to distorting the shape of the top sheet. In addition, the second sheet can be prevented from sticking to the top sheet.
Further, as a preferred mode, the means for adsorbing the uppermost sheet is performed by an adsorber that adsorbs the work using the negative pressure generated by the gas ejection, so that only the uppermost sheet is more stably cut out. Can be provided. In an adsorber that sucks in gas and generates a vacuum, the second sheet may be adsorbed through the fibers of the uppermost sheet, but on the other hand, the work is adsorbed using negative pressure. In the adsorber, since a negative pressure is generated by jetting gas, only the top sheet can be cut out more stably without passing through the fibers of the top sheet and adsorbing the second sheet. In order to further improve the performance, when gas flows between the top sheet and the second sheet, the top sheet and the two sheets immediately below the top sheet are in the vicinity of the area where the gas flows. By having a pressing means for pressing the second sheet, the air blow by the air nozzle is in the state where the gap between the uppermost sheet and the second sheet is narrow in the vicinity where the uppermost sheet and the second sheet are pressed. Can be rolled up Since the gas is always received at an appropriate position, the gas can surely flow into the gap between the uppermost sheet and the second sheet, and the uppermost sheet can be cut out more reliably. .
In addition, it has a moving operation of moving the uppermost sheet after the gap generating operation described above, and between the uppermost sheet and the second sheet across the moving operation immediately before the moving operation or immediately before the moving operation. By introducing the gas, the uppermost sheet other than the generated gap and the second sheet can be released from each other, and the uppermost sheet can be cut out more reliably.
In addition, a gap is generated between the uppermost sheet and the second sheet immediately below the uppermost sheet, and the gap is generated by the gap generation operation. A gas inflow operation for injecting gas between the uppermost sheet and the second sheet generated by the pressing operation for pressing the insertion member and pressing the second sheet and the gap generation operation. By moving the uppermost sheet in an operation different from the gas inflow operation after or during the gas inflow operation, the movement of the second sheet can be limited by the pressing operation of the insertion member and other than the generated gap Since the close contact between the uppermost sheet and the second sheet can be released, the uppermost sheet can be cut out more reliably.

As described above, the paper cutting apparatus according to the present invention can provide a paper cutting apparatus that stably cuts out only one sheet.

FIG. 1 is a perspective view showing Embodiment 1 of a paper sheet cutting device according to the present invention. Example 1 FIG. 2 is a perspective view showing Embodiment 2 of the paper cutting apparatus according to the present invention. (Example 2) FIG. 3 is a perspective view showing Embodiment 3 of the paper cutting apparatus of the present invention. (Example 3) FIG. 4 is a perspective view showing Embodiment 4 of the paper cutting apparatus of the present invention. Example 4 FIG. 5 is a perspective view showing Embodiment 5 of the paper cutting apparatus of the present invention. (Example 5) FIG. 6 is a perspective view showing Embodiment 6 of the paper cutting apparatus of the present invention. (Example 6) FIG. 7 is a perspective view showing a conventional paper cutting device. (Conventional example 1)

In the paper cutting apparatus that cuts out one sheet from a plurality of sheets or bound sheets, a paper cutting apparatus that stably cuts out only one sheet has been realized. Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a first embodiment of the paper cutting apparatus according to the first embodiment of the present invention. As shown in FIG. 1, the paper cutting apparatus according to the present invention includes an adsorber 1, a pressing unit 2, an air nozzle 3, and an arm 4.

As shown in FIG. 1, when the uppermost sheet 5 is sucked by a suction device 1 and lifted upward from a plurality of sheets of sheets, the uppermost sheet 5 comes into contact with the pressing unit 2 and is bent at the contact portion. FIG. 1 shows a moment when a gap is generated between the uppermost sheet 5 and the second sheet 6 by the adsorber 1 and the uppermost sheet 5 is pressed by the pressing unit 2 at the same time. . Gas is allowed to flow between the uppermost sheet 5 and the second sheet 6 from the air nozzle 3 before this moment or before this moment. In this manner, after separating the uppermost sheet 5 and the second sheet 6, the uppermost sheet 5 is moved by the arm 4 to complete the cutting.

Since the pressing operation of pressing the uppermost sheet 5 by the pressing unit 2 distorts the shape of the uppermost sheet 5, the second sheet 6 works so as to avoid distortion of the same shape, and the second sheet 6 is the highest. It is possible to prevent sticking to the upper sheet 5. At this time, as shown in FIG. 1, the gap generation operation and the pressing operation overlap each other for a certain period of time, and the uppermost sheet 5 and the second sheet immediately before or after the certain period of time extend over a certain period of time. The second sheet can be more easily separated by letting the gas flow between the two sheets. In particular, by injecting gas between the uppermost sheet 5 and the second sheet 6 over a certain period of time immediately before a certain period of time, this gas inflow works like an airbrush and the second sheet is generated when a gap is generated. The sheet 6 can be reliably separated, and the gap generation operation and the pressing operation performed over a certain period of time and the requirements for gas inflow over a certain period of time immediately before the certain period can be obtained and a great effect can be obtained.

In the paper cutting apparatus shown in FIG. 1, the holding unit 2 is installed at a position slightly above the uppermost paper 5 of a plurality of sheets of sheets, and the suction device 1 sucks the uppermost paper 5. Then, when a gap is generated between the uppermost sheet 5 and the second sheet 6 by moving up, the uppermost sheet 5 is brought into contact with the uppermost sheet 5 and pressed down. In order to improve the performance, the holding unit 2 can be moved up and down, and the adsorber 1 sucks the uppermost sheet 5 and moves it upward so that the uppermost sheet 5 and the second sheet 6 In order to limit the movement of the second sheet in addition to distorting the shape of the uppermost sheet by simultaneously pressing the uppermost sheet 5 and the second sheet 6 when a gap is generated between them, Prevent the second sheet from sticking to the top sheet. Can.

FIG. 2 is a perspective view showing a second embodiment of the paper cutting apparatus according to the second embodiment of the present invention. As shown in FIG. 2, the paper cutting apparatus according to the present invention includes an adsorber 1, an air nozzle 3, and an arm 4.

As shown in FIG. 2, the adsorber 1 incorporates a pressing unit portion. The uppermost sheet 5 is adsorbed by the adsorber 1 and lifted upward from a plurality of sheets of sheets, and at the same time the adsorber 1 is rotated leftward so that the holding unit portion incorporated in the adsorber is the uppermost sheet 5 Hold and bend. FIG. 2 shows a moment when a gap is generated between the uppermost sheet 5 and the second sheet 6 by the adsorber 1 and the uppermost sheet 5 is pressed by the adsorber 1 at the same time. . Gas is allowed to flow between the uppermost sheet 5 and the second sheet 6 from the air nozzle 3 before this moment or before this moment. In this manner, after separating the uppermost sheet 5 and the second sheet 6, the uppermost sheet 5 is moved by the arm 4 to complete the cutting.

The above operation is the same as that of the first embodiment shown in FIG. 1, and it is obvious that the same effect as that of the first embodiment shown in FIG. 1 can be obtained. Further, as shown in the first embodiment, the pressing unit portion simultaneously presses the uppermost sheet 5 and the second sheet 6 so that the performance can be further improved by the same effect.

FIG. 3 is a perspective view showing a third embodiment of the paper cutting apparatus according to the third embodiment of the present invention. As shown in FIG. 3, the paper cutting apparatus according to the present invention includes an adsorber 1, an air nozzle 3, and an arm 4.

As shown in FIG. 3, the uppermost sheet 5 from a plurality of sheets is adsorbed by the adsorber 1 and lifted upward. Hold the paper 5 and bend it. FIG. 3 shows a moment when a gap is generated between the uppermost sheet 5 and the second sheet 6 by the adsorber 1 and the uppermost sheet 5 is pressed by the adsorber 1 at the same time. . Gas is allowed to flow between the uppermost sheet 5 and the second sheet 6 from the air nozzle 3 before this moment or before this moment. In this manner, after separating the uppermost sheet 5 and the second sheet 6, the uppermost sheet 5 is moved by the arm 4 to complete the cutting.

In Example 1 shown in FIG. 1, the holding unit 2 is provided independently of the adsorber 1, and in the example shown in FIG. 2, the adsorber 1 has a holding unit portion. FIG. 3 shows an example in which the uppermost sheet 5 is pressed and bent by the peripheral portion of the suction device 1, and the above operations are the same as those in the first embodiment shown in FIG. 1 and the second embodiment shown in FIG. Obviously, the same effects as those of the first embodiment shown in FIG. 1 and the second embodiment shown in FIG. 2 can be obtained.

FIG. 4 is a perspective view showing Embodiment 4 of the paper cutting apparatus according to the fourth embodiment of the present invention. As shown in FIG. 4, the paper cutting apparatus according to the present invention includes an adsorber 1, a pressing unit 2, a second pressing unit 7, an air nozzle 3, and an arm 4.

As shown in FIG. 4, when the uppermost sheet 5 is sucked by the suction unit 1 and lifted upward from a plurality of sheets of sheets, the uppermost sheet 5 comes into contact with the pressing unit 2 and is bent at the contact portion. FIG. 4 shows a moment when a gap is generated between the uppermost sheet 5 and the second sheet 6 by the adsorber 1 and the uppermost sheet 5 is pressed by the pressing unit 2 at the same time. . Gas is allowed to flow between the uppermost sheet 5 and the second sheet 6 from the air nozzle 3 before this moment or before this moment. In the vicinity of the place where the gas flows in, the uppermost sheet 5 and the second sheet 6 are pressed by the second pressing unit 7, and a slight gap is left only by the fluid ejection from the air nozzle 3. That is, the uppermost sheet 5 and the second sheet 6 are kept in a slightly spaced state, and are not rolled up and always receive gas inflow at an appropriate position. The gas can surely flow into the gap between the first sheet 6 and the second sheet 6, and the uppermost sheet can be cut out more reliably. When turning each page of a plurality of bound sheets, since the binding margin works as the second pressing unit 7 by flowing gas in the vicinity of the binding margin, the same effect can be exhibited. Can be considered as a second pressing unit in a broad sense.

FIG. 5 is a perspective view showing Embodiment 5 of the paper cutting apparatus according to the fifth embodiment of the present invention. As shown in FIG. 5, the paper cutting apparatus according to the present invention includes an adsorber 1, a pressing unit 2, an air nozzle 3, a second air nozzle 8, and an arm 4.

As shown in FIG. 5, when the uppermost sheet 5 is sucked by the suction unit 1 and lifted upward from a plurality of sheets of sheets, the uppermost sheet 5 comes into contact with the pressing unit 2 and is bent at the contact portion. FIG. 5 shows a moment when a gap is generated between the uppermost sheet 5 and the second sheet 6 by the adsorber 1 and the uppermost sheet 5 is pressed by the pressing unit 2 at the same time. . Gas is allowed to flow between the uppermost sheet 5 and the second sheet 6 from the air nozzle 3 before this moment or before this moment. Next, after separating the uppermost sheet 5 and the second sheet 6, the uppermost sheet 5 is moved by the arm 4. However, the uppermost sheet 5 is moved immediately before this movement operation or immediately before the movement operation. A gas is caused to flow between the upper sheet 5 and the second sheet 6 by the second air nozzle 8.

After a gap is generated between the uppermost sheet 5 and the second sheet 6, the uppermost sheet 5 and two sheets are moved immediately before or just before the movement of the uppermost sheet 5 by the arm 4. By injecting gas between the eye sheets 6, the uppermost sheet 5 other than the generated gap and the second sheet 6 are released from contact with each other, and the uppermost sheet can be cut out more reliably. In the fifth embodiment, the example in which only the uppermost sheet is cut out more reliably by using the second air nozzle 8 in the first embodiment has been shown. However, the second, third, and fourth embodiments are similarly described. It is obvious that only the uppermost sheet can be cut out more reliably by using the second air nozzle 8.

FIG. 6 is a perspective view showing Embodiment 6 of the paper cutting apparatus according to the sixth embodiment of the present invention. As shown in FIG. 6, the paper cutting apparatus according to the present invention includes an adsorber 1, a pressing unit 2, an air nozzle 3, a second air nozzle 8, a third pressing unit 9, and an arm 4.

As shown in FIG. 6, when the uppermost sheet 5 is sucked by the suction unit 1 and lifted upward from a plurality of sheets of sheets, the uppermost sheet 5 comes into contact with the pressing unit 2 and is bent at the contact portion. FIG. 6 shows a moment when a gap is generated between the uppermost sheet 5 and the second sheet 6 by the adsorber 1 and the uppermost sheet 5 is pressed by the pressing unit 2 at the same time. . Gas is allowed to flow between the uppermost sheet 5 and the second sheet 6 from the air nozzle 3 before this moment or before this moment. Further, the third pressing unit 9 is inserted into the generated gap, and the second sheet 6 is pressed by the pressing unit 9. Next, after separating the uppermost sheet 5 and the second sheet 6, the uppermost sheet 5 is moved by the arm 4. However, the uppermost sheet 5 is moved immediately before this movement operation or immediately before the movement operation. Gas is caused to flow between the upper sheet 5 and the second sheet 6 by the second air nozzle 8.

After a gap is generated between the uppermost sheet 5 and the second sheet 6, the third pressing unit 9 is inserted into the generated gap and the second sheet 6 is pressed by the pressing unit 9. The movement of the first sheet 6 is restricted, and gas is passed between the uppermost sheet 5 and the second sheet 6 over the movement immediately before or just before the movement of the uppermost sheet 5 by the arm 4. By making it flow, it is possible to release the close contact between the uppermost sheet 5 and the second sheet 6 at a place other than the generated gap, and more reliably cut out the uppermost sheet. In the sixth embodiment, an example in which only the uppermost sheet is cut out more reliably by using the second air nozzle 8 and the third pressing unit 9 in the first embodiment is shown. However, the second embodiment, the third embodiment, and the third embodiment are described. Similarly, in Example 4, it is obvious that only the uppermost sheet can be cut out more reliably by using the second air nozzle 8 in the same manner.

The present invention can be applied to general purposes in the case of cutting out one sheet from a plurality of sheets or bound sheets.

DESCRIPTION OF SYMBOLS 1 Adsorber 2 Holding unit 3 Air nozzle 4 Arm 5 Topmost sheet 6 Second sheet 7 Second pressing unit 8 Second air nozzle 9 Third pressing unit 10 First adsorber 11 Second adsorber

Claims (7)

In a sheet cutting device that cuts out one sheet from a plurality of sheets or bound sheets, the uppermost sheet is sucked and the uppermost sheet and the second sheet immediately below the uppermost sheet are A gap generating operation for generating a gap between them and a pressing operation for pressing the uppermost sheet, and the gap generating operation and the pressing operation overlap each other for a certain period of time. An apparatus for cutting out a sheet, wherein a gas is allowed to flow between the uppermost sheet and the second sheet over a certain period of time immediately before the certain period of time. 2. The paper cutting apparatus according to claim 1, wherein the means for sucking the uppermost paper is performed by an adsorber that sucks a work using a negative pressure generated by gas ejection. apparatus. 2. The paper cutting apparatus according to claim 1, wherein when the gas is introduced, the uppermost sheet and the second sheet immediately below the uppermost sheet are pressed near a place where the gas is introduced. A paper cutting device comprising a pressing means. In a sheet cutting device that cuts out one sheet from a plurality of sheets or bound sheets, the uppermost sheet is sucked and the uppermost sheet and the second sheet immediately below the uppermost sheet are A gap generating operation for generating a gap between the uppermost sheet and the second sheet at the same time, and the suction operation and the pressing operation are performed over a certain period of time, An apparatus for cutting out paper, wherein a gas is allowed to flow between the uppermost paper and the second paper immediately before the predetermined time or immediately before the predetermined time over the predetermined time. 5. The paper cutting apparatus according to claim 4, wherein the means for sucking the uppermost paper is performed by an adsorber that sucks a work by using a negative pressure generated by gas ejection. apparatus. 6. The paper cutting apparatus according to claim 1, further comprising a moving operation of moving the uppermost paper after the gap generating operation, and immediately before or after the moving operation. An apparatus for cutting out a sheet, characterized in that a gas is allowed to flow between the uppermost sheet and the second sheet over the moving operation immediately before the operation. Gap generating operation for generating a gap between the uppermost sheet and the second sheet immediately below the uppermost sheet in a sheet cutting apparatus that cuts out one sheet from a plurality of sheets or bound sheets And the gap generated by the gap generating operation and pressing the insertion member against the second sheet to hold down the second sheet and the gap generated by the gap generating operation. A gas inflow operation for allowing a gas to flow between the upper sheet and the second sheet, and after the gas inflow operation or during the gas inflow operation, the gas inflow operation is performed separately from the gas inflow operation. A paper cutting apparatus having a moving operation of moving a high-order paper.

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