JP2001158540A - Paper sheet separating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paper sheet separating device capable of preventing overlapped feeding of paper sheets caused by displacement between each paper sheet in feeding the paper sheets of different width. SOLUTION: This paper sheet separating device comprises a loading table 1 for loading paper sheets, a sending out belt 2 for successively sending out the paper sheets loaded on a loading means, and a feeding means (feeding belt 6) for feeding the paper sheets loaded on the loading means to a sending out means, and sucking means (chamber 3 and sucking holes 30, 31) for sucking the paper sheets to be sent out in a face direction of the sending out belt at a position of the sending out means and one or both sides thereof are provided. This structure can prevent the overlapped feeding of the paper sheets caused by the displacement between each paper sheet in separating and feeding multiple paper sheets of different width.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for separating paper sheets used in an apparatus for handling paper sheets such as banknotes, and more particularly to a paper sheet for separating and feeding out sheets of different sizes one by one. It relates to a separation device.

[0002]

2. Description of the Related Art As a conventional example of an apparatus for separating and feeding out sheets one by one, there is, for example, an apparatus disclosed in Japanese Unexamined Patent Publication No. Hei 6-321372, entitled "Equipment for individually picking up shipments". In this device, in order to prevent a so-called double feed in which paper sheets (shipped goods) are pulled out in an overlapped manner, the paper sheets are interposed between the support surface on which the paper sheets are stacked and the guide wall for guiding the paper sheets. A nozzle for blowing pressurized air is arranged on the other, and another nozzle is arranged between the guide wall and the passage gap. Then, pressurized air is blown out from these nozzles at a predetermined inclination in a direction opposite to the transport direction of the paper sheets, and the paper sheets are disintegrated one by one by the pressure air to reduce double feed.

[0003] Another conventional example is disclosed in Japanese Patent Application Laid-Open No. 10-35.
There is an apparatus disclosed in Japanese Patent Publication No. 900 "letter supply apparatus and automatic mail reading / sorting apparatus". In this apparatus, a large step is generated between letters by using a belt having a step on a conveying surface provided with an inclination in a letter take-out apparatus, and the preceding letter is transported by the suction belt and the main chamber, and the subsequent letter is transported. Is held in the sub-chamber to prevent double feed which occurs at the time of feeding.

[0004]

As in the above-mentioned conventional apparatus for individually picking up items to be sent out, in a paper sheet feeding apparatus, it occurs when paper sheets are separated and fed one by one. In many cases, pressure air is used to create a space (gap) between paper sheets in order to prevent double feeding. Preventing double feeding by providing a space between paper sheets in this way is effective when feeding only paper sheets of the same size, but not necessarily effective when feeding paper sheets of different sizes. It can not be said.

[0005] That is, when the sheets are set on the stacking table with the ends thereof aligned, the small-sized sheets are set with a certain portion shifted from the large-sized sheets. If the shift between the paper sheets is shifted vertically,
Providing a space (gap) between the paper sheets as shown in the above-described conventional example has the effect that the vertically displaced paper sheets fall down due to gravity and the lower ends thereof are aligned. It is also possible to prevent a double feed by using the shift between the classes to adsorb the succeeding sheets in a sub-chamber provided below the feeding means.

However, if the paper sheets are shifted in the width direction instead of in the vertical direction, even if a space (gap) is formed between the paper sheets, the paper sheet is not affected by gravity in the width direction. The side edges of the classes cannot be aligned. Therefore, at the same time that the small paper sheets are on the side of the feeding means and are in contact with the feeding means, the large-sized paper sheets following the small paper sheets are also shifted from the feeding means because the paper sheets are displaced from each other. In some cases, the sheet may come into contact with the feeding means simultaneously under the force, and in this case, there is a problem that the feeding force acts on both small and large sheets at the same time, and double feeding occurs. The double feed generated due to the displacement of the sheets in the width direction is performed by using the displacement in the sheet removing direction (up and down direction) to adsorb the succeeding sheets in the sub-chamber as in the above-described conventional example. There is a problem that can not be prevented by the method.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problem and to prevent the occurrence of double feeding due to a shift between sheets when feeding out sheets having different widths. It is to provide a separating device.

[0008]

In order to solve the above problems, a sheet separating apparatus according to the present invention comprises a stacking means (stacking table 1) for stacking sheets and a stacking means (1). (Feeding belt 2) for feeding out the paper sheets stacked on the stacker to the transport path in order, and feeding the paper sheets stacked on the stacking means (1) in the direction of the feeding means (feeding belt 2). In the sheet separating apparatus having the feeding means (feeding belt 6), (a) the sheet to be fed is moved in the surface direction of the feeding belt (2) at the position of the feeding belt (2) and at one or both sides thereof. Suction means (chamber 3, suction holes 30, 31) for sucking from the back side are provided. (B) The feeding belt (2) is provided with reference means in the width direction by a dimension corresponding to the width dimension difference of the paper sheets to be fed. Away from, And (c) the feeding belt (2)
Is set to be small at the side end of the paper sheet to be fed.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, as one embodiment of the present invention,
An example of a letter sorter that processes postal letters such as postcards and sealed letters will be described in detail with reference to FIGS. FIG. 1 is a schematic view of a letter sorter that is an example of an embodiment of a paper sheet transport device equipped with the paper sheet separation device of the present invention. The paper sheets handled by the apparatus of this embodiment are, for example, fixed postal letters such as postcards and sealed letters.

The letter sorter 50 shown in FIG.
Read the classification information such as the address and barcode written in
The letter sort processing is performed based on this sort information. First, the components of the letter sorter 50 will be described.

Reference numeral 102 denotes a letter 10 stacked in the thickness direction.
1 is a hopper for transporting the hopper 1. 103 is the letter 101
This is a supply unit that sequentially supplies the papers one by one. The supply unit 103 uses, for example, a perforated belt to suck air through the holes to attract the letter 101 to the belt, and to move the belt to separate and supply the letter 101 one by one. It has become. In FIG. 1, the supply unit 103 is configured to supply the letter 1 to the lower side, but the supply direction may be any direction such as the upper side in the present invention.

Reference numeral 104 denotes a conveyance path for conveying the letter 101. The letter 104 is conveyed by sandwiching the letter 101 between opposed belts, for example. The transport speed of the transport path 104 is kept substantially constant. Reference numeral 105 denotes a foreign matter detection unit, which detects that the letter 101 is not suitable for processing by the letter sorter 50. For example, the improper size and hardness of the letter 101 or the supply of two or more letters are detected by the passing time of the letter or the deformation of the transport belt.

Reference numeral 106 denotes a first transport gate, which has a structure in which, for example, a gate member for switching the transport direction of the letter 101 is driven by a solenoid. Reference numeral 107 denotes a first reject stacking unit, which stacks the letters 101 for which the foreign matter detecting unit 105 determines that the processing by the letter sorter 50 is inappropriate.

Reference numeral 108 denotes a first alignment unit that corrects the posture of the letter 101. For example, a side of the letter is pressed against a surface serving as a reference for conveyance by a belt skewed with respect to the conveyance direction, and the posture of the letter is adjusted. It has a function to prepare A reading unit 109 reads section information of the letter 101. An example of the sorting information in the letter sorter 50 is an address written in characters or bar codes. The first positioning unit 108 is located on the upstream side of the reading unit 109, and improves the reading accuracy by adjusting the posture of the letter 101 and then transporting the letter 101 to the reading unit 109.

Reference numeral 110 denotes a double feed detecting unit,
Has a function of detecting that two or more letters 101 are supplied by mistake. For example, a double feed is determined by detecting the presence or absence of a change in the overall length of the overlapped letters by displacing the overlapped letters with different belts at different conveyance speeds.

Reference numeral 111 denotes a second transport gate, which has a structure in which, for example, a gate member for switching the transport direction of the letter 101 is driven by a solenoid. Reference numeral 112 denotes a second stacking unit for collecting the letters 101 determined to be double feed by the double feed detection unit 110.
This is the reject accumulation section.

Reference numeral 113 denotes a second alignment unit for correcting the posture of the letter 101, and reference numeral 114 denotes a printing unit for printing a machine code such as a barcode in accordance with the division information of the letter 101. The second alignment unit 113 is located on the upstream side of the printing unit 114 and prints at a predetermined position by adjusting the posture of the letter 101 and then transporting the letter 101 to the printing unit 114. In addition, a simple letter-width adjusting mechanism 130 is provided upstream of the alignment unit 113.
Is provided.

Reference numeral 115 denotes a print confirmation unit, and the print unit 11
By reading the print result in step 4, it is confirmed that the printing has been performed normally. Reference numeral 116 denotes a step gate for distributing the letter 101 to each step. An accumulation unit 117 accumulates and stacks the letters 101 in the thickness direction.

Reference numeral 118 denotes display means for displaying the operation status of the letter sorter 50. The display means 118 uses, for example, a three-color signal light or an LCD (liquid crystal display) to indicate that normal processing is being performed or that an abnormality has occurred. Notify workers. 119
Is a section setting means for setting a pattern of section information to be assigned to the stacking unit 117, and is constituted by, for example, a touch panel or a plurality of switches.

FIG. 2 is an example of a flowchart showing the flow of a letter in the letter sorter of this embodiment. Next, the operation of the letter sorter 50 will be described along the flow of the letter 101 with reference to FIG. The operator places the letters 101 on the hopper 102 in a state of being stacked in the thickness direction (step S1). The hopper 102 transports the letter 101 toward the supply unit 103,
The supply unit 103 sequentially starts from the adjacent letter 101 to the transport path 10.
4 (step S2).

On the transport path 104, first, the foreign substance detecting section 10
It is determined whether or not the letter 101 passing at 5 is not a foreign substance and can be processed by the letter sorter 50 (step S).
4). If it is determined that the foreign matter is a foreign substance and cannot be processed by the letter sorter 50 (step S4: N), the first transport gate 106 is switched, and the letter 101 is stored in the first reject stacking unit 107 ( Step S5).

On the other hand, when it is determined that the letter 101 can be processed by the letter sorter 50 instead of the foreign matter (step S4: Y), the letter 101 is aligned by the first aligning unit 108 (step S6), and then the reading unit At 109, the sorting information such as the address is read (step S7). Next, the double feed detection unit 110 detects that two or more letters do not overlap (step S8). Here, when it is determined that two or more sheets are overlapped (Step S9: N), the second transport gate 111 is switched to store the overlapping letters in the second reject stacking unit 112 (Step S10). .

The letter 101 determined to be normal by the double feed detecting unit 110 (step S9: Y) is sent to the width shifting mechanism 1.
30 and the posture is adjusted by the second alignment unit 113 (step S11), and the printing unit 114 prints a barcode or the like according to the classification information (step S12). Then, when it is confirmed by the print confirmation unit 115 that the barcode or the like has been printed normally (step S13), the stage gate 116 is switched according to the sorting information, and the letters 101 are accumulated on the predetermined accumulation unit 117 (step S13). S1
4).

The letter sorter 50 performs the above-described processing steps in parallel for a plurality of letters 101, and sorts each letter 101 into a predetermined stacking unit 117.

FIG. 3 is a schematic diagram of a sheet separating apparatus including the hopper 102 and the supply unit 103 in the letter sorter 50 of FIG.

The separating apparatus shown in FIG. 3 is an example in which a letter is fed in a substantially gravity direction (substantially vertically downward), and a loading table 1 for loading a bundle of letters to be separated, and on the loading table 1. And a delivery belt 2 for delivering the foremost letter of the bundle of letters, and the forefront letter of the bundle of letters on the loading table 1 is sucked in the direction of the delivery belt 2, and the letters are further attached to the delivery belt 2. The chamber 3 has a negative pressure inside, so that the front letter of a bundle of letters is attracted to the delivery belt 2 to be delivered while being attracted, and the letter adjacent to the delivered letter is entrained. Separating roller 4 for preventing the letters from being fed out simultaneously, a detection lever 5 for detecting that the foremost letter is attracted to and coming into contact with the feeding belt 2, and a feeding letter for a bundle of letters on the loading table 1. 2 directions Feeding belt 6 and fork 7 for feeding, detecting lever sensor 8 for detecting the position of detecting lever 5, letter passing detecting sensor 9 for detecting passing of fed letters, presence / absence of letter for detecting presence / absence of letter on loading table 1. Detection sensor 10, frame 11, drive pulley 12, roller 13, spring 14, drive pulley 15, biting roller 17
It is composed of Reference numeral 16 denotes a long hole provided in the frame 11.

Here, the loading table 1 and the frame 11 serve as reference means for performing positioning in the vertical direction and the width direction in which a letter is set.

The surface of the feeding belt 2 which is in contact with the letter is coated with a material having a high coefficient of friction to feed the letter. The feed belt 2 is provided with a plurality of holes 20 for applying a negative pressure of the chamber 3 to a letter shape over the entire circumference of the belt. The feeding belt 2 is applied with a predetermined tension to a pulley 12 for driving the feeding belt 2 and a roller 13 that rotates following the feeding belt 2. The drive pulley 12 is driven by a servo motor (not shown).

A suction hole is provided on the surface of the chamber 3 on the loading table 1 side, similarly to the feeding belt 2. The inside of the chamber 3 is in a negative pressure state lower than the atmospheric pressure by a blower (not shown), and the letter on the loading table 1 is sucked in the direction of the feeding belt 2 by the negative pressure, and is drawn by the feeding belt 2. It is designed to adsorb and contact.

The detection lever 5 is mounted on a shaft so as to freely rotate. A spring 14 is attached to a part of the detection lever 5, and a stopper (not shown) is provided near an end of the detection lever 5 opposite to the letter contact portion, and the rotation of the detection lever 5 by the spring force is provided. Has been blocked.

When the letter is not on the letter suction surface, the position of the stopper is adjusted so that the letter contact portion of the detection lever 5 projects to the loading table 1 side from the letter suction face. When the letter is on the letter suction surface, the letter contact portion is pushed by the sucked letter and retracted from the letter suction face.

On the loading table 1, the letter conveying surface of the feed belt 6 is provided so as to be slightly higher than the surface of the loading table 1. The feed belt 6 is driven by a driving pulley 15. Driving force is transmitted to the driving pulley 15 from a servo motor (not shown). The letter conveyance surface of the feed belt 6 is coated with a material having a high coefficient of friction so that letters can be conveyed.

The fork 7 is provided so as to protrude from a long hole 16 provided in the frame 11. The fork 7 is attached to the chain on the back side of the frame 11, and is driven by a servomotor. The drive of the servomotor is controlled by a speed command signal of the control unit.

The feed belt 6 and the fork 7 are driven synchronously. ON / OFF of the drive is determined by the operation of the detection lever 5. When there is no letter on the letter suction surface and the letter contact portion of the detection lever 5 is protruding from the letter suction face, the signal output from the detection lever sensor 8 is OFF. At this time, the feed belt 6 and the fork 7 Is driven to feed out the letter on the loading table 1 in the direction of the belt 2. When the letter is sucked and sucked by the feeding belt 2, the detection lever 5 is pushed by the suction force. At this time, a signal output from the detection lever sensor 8 is turned ON, and the driving of the feed belt 6 and the fork 7 is stopped by this signal.

Next, the separation and supply operation of a letter will be described. When the letter on the loading table 1 is sent to the vicinity of the feed belt 2 by the fork 7 or the feed belt 6, the letter at the forefront is sucked by the suction force from the chamber 3 and is adsorbed on the feed belt 2. At this time, the letter adsorbed on the feeding belt 2 pushes the detection lever 5 and an ON signal is generated from a detection lever sensor 8 provided near the detection lever 5. Then, the control unit (not shown) stops the feed belt 6 and the fork 7 based on the detection signal.

The delivery belt 2 is already driven when the letter is attracted, and when the letter is attracted to the delivery belt 2, the frictional force caused by the attraction acting between the letter and the delivery belt 2 becomes the conveying force. And a letter is issued. When the letter is fed, the leading end of the letter is detected by a letter passage detection sensor 9 provided along the transport path. When the leading end of the fed letter is sandwiched by the biting rollers 17, all the pass detection sensors 9 detect the passage of the letter (pass sensor ON), and the feeding belt 2 stops based on the detection signal. Is done. From now on,
The letter is conveyed in such a manner that it is pulled out from a state sandwiched between the feeding belt 2 and the separation roller 4 by the conveying force of the biting roller 17 and the downstream conveying path.

When the letter is conveyed and the trailing end of the letter passes the detection lever 5, the detection lever 5 returns to the initial position, so that the signal from the detection lever sensor 8 is turned off, and the fork 7 and the feed belt 6 are turned off. It is driven again. When the letter is further conveyed, there is a gap between the trailing end of the fed letter and the subsequent letter. When any of the letter passage detection sensors 9 provided along the conveyance path detects this interval (pass sensor OFF), the feeding belt 2 is driven again.

First, before describing the present invention, a reference example serving as a premise of the present invention will be described. FIG. 8 is a view of the chamber 3 and the feeding belt 2 of the letter separation device in the reference example as viewed from the loading table side. In the separation device of this reference example, as can be seen from FIG. 8, the suction hole 30 is provided in the vicinity of the frame 11 on the surface of the chamber 3 on the loading table side in the same manner as the hole 20 of the feeding belt 2. 2 are provided. For this reason, the loading table 1
The upper letter is sucked and drawn in the direction of the feeding belt 2, and is attracted to and comes into contact with the feeding belt 2.

In the separation mechanism shown in FIG. 8, the width W from the frame 11 is set to be unreeled by this separation device even when the letter is set to be aligned with the loading table 1 and the frame 11 as shown in FIG. Is set to be equal to or smaller than the width of the letter having the narrowest width. In this manner, as shown in FIG. 9, even when the letter M1 having the narrowest dimension is on the chamber 3 side and the letter M having the widest width follows the letter M1, the subsequent letter M2 is added to the chamber M3. There is no suction / adsorption force from the surface. Further, the feeding force by the feeding belt 2 does not act on the subsequent letter M2. Therefore, even if letters having different widths are consecutive, double feeding can be prevented.

However, in practice, narrow letters are not always aligned with the frame 11 side. Therefore, in practice, a narrow letter M1 may be aligned on the opposite side to the frame 11 as shown in FIG. 10, and at this time, the suction / suction force from the chamber 3 and the attachment to the frame 11 side The feeding force by the feeding belt 2 </ b> A acts simultaneously on the narrow letter M <b> 1 on the chamber 3 side as well as on the subsequent wide letter M <b> 2. Therefore, these letters M1 and M2 are about to be paid out at the same time.

In the above reference example, since the separation roller 4 is provided as shown in FIG. 3, most of the simultaneous feeding can be prevented. However, double feeding sometimes occurs.

The present invention solves the above problem. Hereinafter, embodiments of the present invention will be described. FIG. 4 is a view of the chamber 3 and the feeding belt 2 in the sheet (letter) separating apparatus of the present embodiment as viewed from the loading table side (left side in FIG. 3). In this embodiment, as shown in the figure, a suction hole 31 for applying a negative pressure of the chamber 3 to a letter is also provided in a portion of the chamber 3 on the frame 11 side where the feeding belt 2 is not provided. The suction hole 31 has a function of sucking the letter on the loading table 1 toward the feeding belt 2 and attracting the letter to the drawing chamber 3.
No feeding force acts on the letter because no letter is provided.

Suction holes 30 and 31 provided in chamber 3
Is determined as follows. The area of the suction hole 30 provided in a certain portion of the feeding belt 2 is determined by the value of the suction / suction force acting on the letter. In order to increase the suction / suction force, the area of the suction hole 30 may be increased. However, if the suction hole 30 is too large, the negative pressure in the chamber 3 cannot be sufficiently obtained, or the feeding belt 2 is also sucked together when the letter is sucked. The power also increases. For this reason, the area of the suction hole 30 provided in a certain portion of the feeding belt 2 is determined in accordance with the suction / suction force, the resistance force, and the negative pressure reduction rate.

On the other hand, a suction hole 31 provided in a portion of the chamber 3 where the feeding belt 2 is not provided is also provided for the purpose of sucking and sucking a letter. Therefore, the shape is determined according to the magnitude of the suction / suction force acting on the paper sheet. In order to increase the suction / suction force, it is desirable that the area of the suction hole 31 is large as described above. However, in order to prevent the letter to be drawn out from being caught in the suction hole 31, the present embodiment employs a long hole shape. It is.

The area of the suction force of the suction hole 31 is set so as to be equal to the suction force generated by the suction hole 30 provided in a certain portion of the feeding belt 2. Thereby, when the paper sheet is sucked by the feeding belt 2, there is an effect that the suction force acting on the paper sheet becomes substantially constant even in the width direction. When the suction force acting on the end of the paper sheet is increased or decreased, the suction force may be adjusted by changing the area of the hole at that position and changing the flow velocity of the air.

FIG. 5 is a diagram for explaining the operation and effect of the letter separation device according to the embodiment of the present invention. In the present embodiment, as shown in the figure, when the preceding narrow letter M1 is aligned on the opposite side (right side in the figure) to the frame 11, the suction / suction force from the chamber 3 and the feeding out are performed. The feeding force by the belt 2 acts only on the preceding narrow letter M1. The subsequent wide letter M2 has a suction hole 3 provided on the frame 11 side of the chamber 3.
1, the suction / adsorption force acts, and is drawn toward the feeding belt 2 in the same manner as the preceding letter M1. However, since the feeding belt 2 is not provided at the suction hole 31, the subsequent wide letter M <b> 2 is sucked into the chamber 3 but does not receive the feeding force from the feeding belt 2.

Rather, the attraction force generates a slight frictional force with the chamber 3, which acts as a resisting force for preventing feeding, and acts in a direction for preventing double feeding. Most preferably,
This friction force is set to be smaller than the feeding force by the feeding belt 2 and larger than the feeding force acting on the letter M2 generated by the friction force acting between the letters M1 and M2. With this setting, even when only one letter is normally sucked into the chamber 3 and conveyed, it can be fed without a problem of skew due to imbalance of the conveying force.

The range D where the suction holes 31 are provided is most ideally determined by the difference between the width of the widest letter and the narrowest letter. However, it is not necessary to limit the present invention to the case where the width of the widest letter is low.
Most of the letters with a width dimension between
May be set to about 30 mm. In other words, the feeding belt 2 that generates the feeding force should not be provided in the range D in which the suction holes 31 are provided.

When the suction hole 31 is eliminated, not only does the suction force acting on the entire letter lower, but also the suction force does not act on the inner part of the letter (the frame 11 side) and only the central part of the letter is attracted. Therefore, there is a problem that the end portion is bent. If these problems do not exist, the suction hole 31 itself may not be provided.

When it is necessary to provide a feeding belt also on the frame 11 side (the left side in FIG. 5), if the feeding force is made different in the width direction and the feeding force near the side end of the letter is reduced. For example, the feeding belt 2A shown in FIG. 10 may be provided in FIG. 5, and its friction coefficient may be made smaller than the friction coefficient of the other feeding belt 2. In this case, as a minimum condition, the feeding belt 2
The friction coefficient of A is set such that the frictional force of the feeding belt 2A is smaller than the feeding force of the other feeding belt 2.

In the embodiment shown in FIGS. 4 and 5, two feeding belts 2 are provided, but it is not always necessary to provide two feeding belts. For example, even when a letter is set to be aligned with the loading table 1 and the frame 11, the feeding belt 2
If the width of the chamber 3 from the frame 11 cannot be set to be equal to or smaller than the width of the letter having the narrowest width fed out by the separation device, as shown in FIG. A configuration may be adopted in which only one feeding belt 2 is provided at the center of the belt. In this case, suction holes 31 for applying the negative pressure of the chamber 3 to the letter are provided not only on the frame 11 side of the chamber 3 but also on the opposite side of the frame 11. As in the case described above, since the feeding belt 2 is not provided in this portion, the letter on the loading table 1 is sucked and drawn toward the feeding belt 2, and is attracted to the chamber 3, but the letter-like feeding force is applied. Does not work. For this reason, it is possible to prevent a double feed caused by a difference in the width dimension of the letter to be fed.

As another countermeasure in this case, a feeding belt 2A provided on both sides of the chamber 3 as shown in FIG.
And the friction coefficient 2C is smaller than that of the central feeding belt 2B, and the feeding force acting in a letter shape may be different in the width direction. Also in this case, the frictional force between the feeding belts 2A and 2C is set smaller than the feeding force by the feeding belt 2B. In this way, even if a feeding force acts on a subsequent letter due to a difference in the width of the letter, the feeding force acting on the subsequent letter can be reduced. Sending does not occur.

[0053]

According to the present invention, there is provided a sheet separating apparatus capable of preventing occurrence of double feed due to deviation of sheets when feeding sheets having different widths. can do.

[Brief description of the drawings]

FIG. 1 is a schematic view of a letter sorter as one embodiment using a sheet separating apparatus of the present invention.

FIG. 2 is a flowchart showing a flow of a letter in the letter sorter of this embodiment.

FIG. 3 is a side view schematically showing a letter separation device as one embodiment of the paper sheet separation device.

FIG. 4 is a schematic view of a letter separation apparatus as one embodiment of a paper sheet separation apparatus viewed from a loading table side.

FIG. 5 shows the operation of the letter separation device according to the embodiment of the present invention;
It is a figure for explaining an effect point.

FIG. 6 is a schematic view of a letter separation device of a paper sheet separation device according to another embodiment of the present invention as viewed from a loading table side.

FIG. 7 is a schematic view of a letter separation apparatus of a paper sheet separation apparatus according to another embodiment of the present invention as viewed from a loading table side.

FIG. 8 is a schematic view of the letter separation device in the paper sheet separation device of the reference example as viewed from the loading table side.

FIG. 9 is a diagram for explaining the operation of the letter separator of the reference example.

FIG. 10 is a diagram for explaining a problem in the letter separation device of the reference example.

[Explanation of symbols]

1: loading table, 2: feeding belt, 3: chamber, 4:
Separation roller, 5: detection lever, 6: feed belt, 7: fork, 8: detection lever sensor, 9: letter position detection sensor, 10: letter presence detection sensor, 11: frame, 1
2: drive pulley, 13: roller, 14: spring, 15: drive pulley, 16: slot, 17: biting roller, 2
0: holes provided in the feeding belt, 30, 31: suction holes provided in chamber 3, 50: letter sorter, 10
1: letter, 102: hopper, 103: supply unit, 104:
Conveyance path, 105: foreign matter detection unit, 106: first conveyance gate, 107: first reject accumulation unit, 108: first alignment unit, 109: reading unit, 110: double feed detection unit, 1
11: second transport gate, 112: second reject accumulation unit, 113: second alignment unit, 114: printing unit, 11
5: print confirmation unit, 116: step gate, 117: accumulation unit,
118: display means, 119: division setting means.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3F079 AA02 AA03 BA03 BA09 BA11 BA25 CA02 CA15 CA44 CC05 EA03 3F343 FA04 FB07 FC01 GA04 GB01 GC01 GD01 HA12 HD15 JB05 JB12 JB17 JB24 JB25 JB27 JB28 JD03 JD27 JD40

Claims (3)

[Claims] 1. A stacking means for stacking paper sheets, a feeding belt for sequentially feeding out the paper sheets stacked on the stacking means, and a feeding belt for feeding the paper sheets stacked on the stacking means. A sheet feeding device for feeding the sheet to the feeding belt, wherein suction means for sucking the fed sheet at the position of the feeding belt and at one or both sides thereof in the surface direction of the feeding belt is provided. A paper sheet separating apparatus characterized by the above-mentioned. 2. A stacking means for stacking paper sheets, a feeding means for sequentially feeding out the paper sheets stacked on the stacking means, and a feeding means for feeding the paper sheets stacked on the stacking means. And a feeding means for feeding the paper sheet to the paper sheet feeding device, wherein the feeding means is provided apart from the widthwise reference means by a dimension corresponding to the width dimension difference of the fed paper sheet. Paper sheet separation device. 3. A stacking means for stacking paper sheets, a feeding means for sequentially feeding out the paper sheets stacked on the stacking means, and a feeding means for feeding the paper sheets stacked on the stacking means. A sheet separating device having a feeding means for feeding the sheet to the sheet feeding device, wherein the feeding force of the feeding means is set to be small at a side end portion of the fed sheet. .