JPH08231072A - Paper sheet feeding device - Google Patents

Abstract

PURPOSE: To facilitate constantly stable and secure feeding under the same condition regardless of the properties and quantity of paper sheets accumulated on a loading base. CONSTITUTION: In a feeding device which has a kicker roller 15, a feed roller 2 and a gate roller 7, and presses the top one of paper sheets P accumulated on a loading base 1 against the kicker roller 15, and draws out the paper sheets P by the rotation of the kicker roller 15, the kicker roller 15 is rotatably supported on the first arm 14 which can vertically oscillate centering around the rotating shaft 3 of the feed roller 2. A disposing roller 22 for disposing the rear end edges in a drawing out direction of paper sheets by the rotation of itself is journaled on the second arm 21 which can vertically oscillate centering around the shaft 17 of the kicker roller 15, and the loading base 1 has length in a feeding direction enough to enable the kicker roller 15 and the disposing roller 22 to abut.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet feeding device for feeding sheets one by one from the uppermost sheet stacked on a placing table mainly by using friction of rollers. .

[0002]

2. Description of the Related Art Conventionally, a kicker roller, a feed roller, and a gate roller are provided at the top as a paper sheet feeding device that sequentially feeds paper sheets, for example, banknotes, one by one from an accumulated paper sheet for identification and counting. Having the uppermost paper sheet of the paper sheets accumulated on the mounting table by the ascending movement of the mounting table by the elevating and lowering means is pressed against the kicker roller, and the paper sheet is rotated by the rotation of the kicker roller and the feed roller. In some cases, the feeding table is moved upward by an elevating and lowering drive means in accordance with the decrease in the number of paper sheets, and the feeding is continued.

[0003]

However, in the above-mentioned conventional paper sheet feeding device, since the kicker roller is provided at a fixed position, the bills accumulated on the placing table are closely contacted with each other, and the new bills are newly attached. When the peripheral edges are attached to each other as described above, when the kicker roller feeds the bill, two or more bills are often fed simultaneously. Further, since the loading table rises in accordance with the feeding of the bills, the feeding condition changes depending on the amount of the bills accumulated on the loading table, and it is difficult to always feed the bills one by one. It was

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a paper sheet feeding device capable of stably and reliably feeding paper sheets under the same conditions regardless of the nature and amount of the paper sheets on the mounting table.

[0005]

As a means for solving the problems of the above-mentioned prior art, the invention described in claim 1 has a kicker roller, a feed roller, and a gate roller in the upper part, and is driven up and down. The uppermost paper sheet of the paper sheets accumulated on the mounting table is pressed against the kicker roller by the upward movement of the mounting table by the means, and the paper sheet is fed out by the rotation of the kicker roller and the feed roller and the paper sheet is also fed. In the paper sheet feeding device that raises and lowers the mounting table by the elevating and lowering means in accordance with the decrease of the type, and continues the feeding,
The upper end region of the standing wall against which the front edge of the paper sheet in the feeding direction hits is an inclined wall that is inclined toward the gate roller provided facing the feed roller, and can be vertically swung about the rotation axis of the feed roller. The kicker roller is pivotally supported by the first arm, and the second arm, which can be vertically swung about the axis of the kicker roller, causes the rear end edge of the paper sheet in the feeding direction to be displaced by rotation, and the front end edge in the feeding direction. Is mounted on the inclined wall, and the mounting table has a length in the feeding direction with which the kicker roller and the separating roller can come into contact. According to a second aspect of the present invention, in the above, pulleys are respectively provided on the rotation shaft of the feed roller and the shaft of the kicker roller, and the feed belt is wound between these pulleys, and the outer peripheral surface of the feed belt of each pulley portion is fixed. The outer peripheral surfaces of the feed roller and the kicker roller are substantially flush with each other, and the feed belt is commonly used for transmitting the rotational force of one of the rollers and for feeding the paper sheets. According to a third aspect of the present invention, pulleys are provided on the shaft of the kicker roller and the shaft of the separating roller, respectively, and a belt for drive transmission is wound between the pulleys so that rotation of one shaft is applied to the other shaft. The peripheral speed of the separating roller is set to be slightly faster than that of the kicker roller.
Further, according to a fourth aspect of the present invention, a detecting means for detecting the swinging and descending of the first arm is provided, and when the detecting means detects the swinging and descending of the first arm, the ascending / descending driving means of the mounting table is raised. It was done.

[0006]

The invention of claim 1 performs the following operation. That is, the uppermost paper sheet of the paper sheets accumulated on the mounting table abuts the kicker roller and the separating roller, and the uppermost paper sheet is pushed out by the kicker roller one by one, and the feed roller and the gate roller. It is sent between the sheet and the sheet and separated into only one sheet and fed out. Along with this feeding, the separating roller comes into contact with the rear end position of the paper sheet in the feeding direction, shifts the trailing edge of the paper sheet in the feeding direction, and aligns the leading edge of the paper feeding direction with the inclined wall by the feed roller and the gate roller. Makes it easy to perform the single-sheet separation function (gate function).

When the feeding of the paper sheets progresses and the amount of the paper sheets decreases, the mounting table is raised by the elevating and lowering drive means, and is always in the feeding state. According to the invention of claim 2, in addition to the operation of the invention of claim 1, one of the feed roller and the kicker roller is driven and the other is driven, and the transmission belt thereof is used as the feed belt. The feeding force of the leaves is applied, and the feeding of the paper sheets is reliably performed. Further, according to the invention of claim 3, the rotation is transmitted to the separating roller, and the peripheral speed of the separating roller is set to be slightly higher than that of the kicker roller, so that the separating roller comes into contact with the uppermost sheet surface together with the kicker roller. During this time, the uppermost paper sheet is partially bent due to the speed difference between the kicker roller and the separating roller, which assists the separating action of the paper sheets. Also, when the separating roller contacts the trailing edge of the succeeding sheet of the uppermost sheet, the front edge of the sheet is aligned with the inclined wall,
Ensures the separating action of paper sheets. Further, as in the fourth aspect, if the mounting table is raised when the predetermined amount of lowering of the first arm is detected, it is possible to carry out the feeding under the optimum conditions at all times.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

FIG. 1 shows a side view of the sheet feeding device according to the present invention in an operating state, and FIG. 2 shows the same plane.

The mounting table 1 in the above figure is a plate-like member having a length substantially the same as the length in the feeding direction of paper sheets P such as banknotes (the length in the lateral direction in the case of banknotes). It is fixed to a belt that rotates endlessly in the up-down direction, and is rotated upward by a predetermined amount by rotation of a motor M ₀ and a belt driven by this motor M ₀ . Also motor M
It is designed to be moved downward by reverse rotation of ₀ and reverse rotation of the belt. The lifting drive means of the present invention is the motor M ₀ described above.
And a belt, etc.

A pair of left and right feed rollers 2 and 2 are provided above a position separated in front of the sheet feeding direction (direction of arrow A in FIG. 1) of the table 1 and a rotary shaft 3 supported by a machine frame (not shown). The belt 6 is wound around the pulley 4 at the outer end of the rotary shaft 3 and the pulley 5 of the motor M ₁ so that the feed rollers 2 and 2 are rotated in the direction of the arrow in FIG. It is designed to be used.

Correspondingly to the lower positions of the feed rollers 2 and 2, the gate rollers 7 and 7 are supported on the shaft 8 through a one-way clutch (not shown), and the shaft 8 is supported.
Belts 12, 12, 12, 12 are wound around the pulleys 9, 9, 9, 9 of FIG. 1 and the pulleys 11, 11, 11, 11 on the shaft 10 rotated by the motor M ₂ and the belts 12, 12, 12, 12 are wound in the direction of the arrow in FIG. Rotation is given, but the gate rollers 7 and 7 are made unrotatable by the one-way clutch in the arrow direction,
It is also free to rotate in the opposite arrow direction.

Further, driven rollers 11 ', 11', 11 ', 11', which face the pulleys 11, 11, 11, 11 and come into pressure contact with the belts 12, 12, 12, 12 (FIGS. 1, 3 to 3).
(Illustrated in FIG. 5) is provided.

The feed rollers 2 and 2 are provided with two recessed grooves 2a and 2a in the circumferential direction of the peripheral surface thereof, and the grooved grooves 2a and 2a are formed in the circumferential direction of the gate rollers 7 and 7, respectively. Corresponding two ridges 7a, 7a are formed, and these recessed grooves 2a, 2a and ridges 7a, 7a are slightly intertwined to form one groove edge 2a, 2a and each ridge 7a, 7a. A gate gap that allows only the sheets P of paper to pass through is formed.

At a position close to the end of the placing table 1 in the sheet feeding direction A, a vertical standing wall 13 against which the front end of the sheet P on the placing table 1 in the feeding direction abuts is fixed to the machine side. The upper region of the standing wall 13 is an inclined wall 13A extending obliquely forward and horizontally extending from a position intersecting with the upper regions of the gate rollers 7, 7, and the upper end portion of the gate rollers 7, 7 has an inclined wall 13A. It is projected slightly above the upper surface of.

A base of a first arm 14 is pivotally supported on the rotary shafts 3 of the feed rollers 2 and 2, and the first arm 14 is
The pair of kicker rollers 15 and 15 are arranged at the positions corresponding to the first half of the paper feeding direction of the placing table 1 of the bushes 16 and 1.
The first arm 14 is provided on a shaft 17 that is axially supported via 6 and is vertically swingable around the rotary shaft 3 by its own weight. In addition, each kicker roller 15, 15
Has a smaller kicker roller peripheral surface on the inner side of the shaft 17 and a wider kicker roller peripheral surface on the outer side.

Pulleys 18, 18 on the rotary shaft 3 and pulleys 19, 18 on the shaft 17 of the kicker rollers 15, 15.
Belts 20 and 20 are wound around 19 and kicker roller 1
5, 15 are adapted to be rotated by the feed rollers 2, 2, and the outer surfaces of the belts 20, 20 are substantially flush with the outer peripheral surfaces of the feed rollers 2, 2 and the kicker rollers 15, 15. The belts 20 and 20 also have a feeding function.

The bases of the second arms 21 and 21 are pivotally supported on the shafts 17 of the kicker rollers 15 and 15, and the second arms 21 and 21 are fixed by the fixing pieces 21a. Reference numeral 21 is integrally provided so as to be vertically movable. The second arms 21 and 21 are provided with a pair of separating rollers 22 and 22 at positions corresponding to the latter half of the mounting table 1.
Are supported by the shaft 23. A belt 26 is wound around a pulley 24 on the shaft 23 and a pulley 25 on the shaft 17 of the kicker rollers 15 and 15, so that the separating roller 2
2, 22 are adapted to be rotated by the kicker rollers 15, 15. The peripheral speeds of the separating rollers 22 and 22 are slightly higher than the peripheral speeds of the kicker rollers 15 and 15.
The peripheral speed is set to 06 times. A protrusion 27 is provided on the side surface of the first arm 14 and is placed between stoppers 28 and 29 provided on the machine frame side, and the upper and lower limit positions of the first arm 14 are determined by the stoppers 28 and 29. ing.

Further, four mounting portions 14a extending horizontally are formed at the lower end of the first arm 14, and a guide plate 30 for guiding the upper surface of the paper sheet is fixed to the lower surface of the mounting portion 14a. The arm 21 is abuttable against a stopper 31 fixed on the guide plate 30, and the second arm 21
Has set a lower limit of.

The first arm 14 is turned off when the protrusion 27 of the first arm 14 is in contact with or near the lower stopper 29, and is turned on when the first arm 14 is swung downward by a predetermined amount. A sensor S ₁ is provided as a detecting means for detecting the fall of the.

1 and 2, S ₂ , S ₃ , S ₄
Indicates a light receiving sensor for detecting the presence or absence of the paper sheet P, and the respective light projecting sensors corresponding to the respective sensors S ₂ , S ₃ , S ₄ are not shown.

Further, there are provided light emitting / receiving type paper sheet passage detecting sensors S ₅ and S ₅ ′ for detecting passage of the paper sheet P and temporarily stopping the motor M ₁ .

Next, the operation of the above embodiment will be described with reference to FIGS.

The placing table 1 is placed in the lowered position, and the upper surface of the paper sheets P accumulated on the upper surface thereof is the kicker rollers 15, 1.
5 When separating from the separating rollers 22 and 22,
As shown in FIG. 3, the protrusion 27 of the first arm 14 is provided with the stopper 2 at the lower portion by the biasing force applied to the first arm 14 such as its own weight.
9 is at the lower limit position, the sensor S ₁ is OFF, and the second arm 21 is
The stopper 31 on the guide plate 30 is hit by the urging force such as its own weight and is in the lower limit position.

When feeding out the paper sheets P on the placing table 1, the motor M ₀ is rotated in the forward direction to raise the placing table 1, and the upper surface of the sheet P is kicker rollers 15 and 15 and the separating roller 2.
When the first arm 14 and the second arm 22 and 22 are further pushed up, the first and second arms 14 and 21 move up and swing, and the first arm 14 moves to the sensor S ₁
When the motor is cut off, the motor M ₀ is stopped by the detection signal,
The raising of the mounting table 1 stops.

Here, the motors M ₁ and M ₂ are driven by the feeding command.
Is driven, the rotary shafts 3 of the feed rollers 2 and 2 rotate,
Pulleys 18, 18, belts 20, 20, pulley 1
The kicker rollers 15 and 15 rotate in the direction of the arrow in FIG.
6, the separating rollers 22 and 22 rotate in the arrow direction in FIG. 4 via the pulley 24.

As a result, the kicker rollers 15 and 15 and the feed rollers 20 and 20 eject the uppermost paper sheet P,
The sorting rollers 22 and 22 push the rear end edge of the accumulated paper sheets P in the feeding direction forward to assist the feeding. The details of the operation of the separating rollers 22, 22 will be described later.

The sheets P ejected as described above are fed from the inclined wall 13 to the feed rollers 2 and 2 and the gate roller 7,
Between the kicker rollers 15 and 15 and the belt 20,
When the paper is fed by the cooperation of 20 and passes through the gate gap between the feed rollers 2 and 2 and the gate rollers 7 and 7, the lower two sheets of paper P which are superposed on each other are not rotatable in the feeding direction. It is returned by 7, 7 and only one is passed.

In this way, when the feeding progresses and the amount of the paper sheets P on the mounting table 1 decreases, the first arm 14 as shown in FIG.
And the second arm 21 gradually swings downward. When the first arm 14 descends and swings to turn off the sensor S ₁ , the detection signal causes the motor M ₀ to rotate in the normal direction to raise the mounting table 1, and when the sensor S ₁ turns on again as shown in FIG. Stop.

The feed rollers 2 and 2, the kicker rollers 15 and 15, and the feed belt 2 even while the mounting table 1 is being raised.
Nos. 0 and 20 continue to rotate, and the paper sheet is continuously fed out.

When the last sheet is fed out by repeating the above operation, the kicker rollers 15, 15 and the separating roller 2
2,22, feed belts 20, 20 are in frictional contact with the table 1 the upper surface, all the sensors S _2, S _3, S ₄ are to reversely rotate the motor M ₀ by detecting the sheet free, table 1 Is lowered and stopped at the sheet loading position. Further, the motors M ₁ and M ₂ are stopped at a predetermined time after the last paper sheet is delivered and conveyed.

The feed rollers 2 and 2, the kicker rollers 15 and 15, and the feed belts 20 and 20 are friction surfaces on the entire circumference, and the motor M ₁ is temporarily rotated each time one sheet is fed out. Stop. On the other hand, the motor M ₂ continuously rotates in order to convey the fed paper sheets. This motor M
The rotation of ₁ is controlled by the sheet passing detection sensors S ₅ , S ₅ ′ and a timer T in a control unit (not shown).
The state of rotation and stop of the motor M ₁ will be described with reference to FIG. 6. The start command operation causes the motor M ₁ and the motor M ₂ to rotate. Here, it is assumed that the peripheral speeds of the feed rollers 2 and 2, the kicker rollers 15 and 15, and the feed belts 20 and 20 and the peripheral speeds of the belts 12 and 12 are set to be equal, and the rotational speeds of the motors M ₁ and M ₂ are also set to that. Use the corresponding rotation speed.

When the motor M ₁ rotates, the paper sheets are fed out from the gate gap between the feed rollers 2 and 2 and the gate rollers 7 and 7, and the front edge of the paper sheet cuts off the sensors S ₅ and S ₅ ′. The timer T is set, and the motor M ₁ is temporarily stopped when the predetermined time t ₁ has elapsed. After a further time elapses and the predetermined time t ₂ elapses, the motor M ₁ starts rotating again. The predetermined time t ₁ is set to be shorter than the time for conveying the shortest feeding direction length L ₁ among the types of paper sheets to be processed, and the predetermined time t ₂ is the paper sheet to be processed. Of the types, the time is longer than the time for conveying the paper sheet having the longest feeding direction length L ₂ .

Therefore, even when the paper sheets having different lengths are fed, the paper sheets are conveyed with a space therebetween.

That is, the front edge of the first sheet leaves the feed rollers 2 and 2 and the gate rollers 7 and 7 to reach the sensors S ₅ and S ₅ ′, and within a predetermined time t _{1 from} that time, the sheet. Most of the lengthwise direction of leaves is belts 12, 12, 1
2, 12 and driven rollers 11 ', 11', 11 ', 11'
Has passed through the clamping area. When the motor M ₁ is stopped after the lapse of the predetermined time t ₁ , the paper sheets being fed out are belts 12, 12, 12, 12 and driven rollers 11 ′, 1
1 ', 11', and 11 'are continuously conveyed, and the paper sheet to be delivered next has its front end edge in the gate gap between the feed rollers 2 and 2 and the gate rollers 7 and 7 or at a position immediately before the gate gap. and the feed rollers 2,2 by pausing the motor M _1, a feed belt 20 and 20, kicker roller 15 and 15 are stopped separating rollers 22, 22 temporarily sheet until the next start of rotation of the motor M ₁ Is not carried out.

Further, during the elapse of the predetermined time t ₂ , the belt 12,
12, 12, 12 and driven rollers 11 ', 11', 1
The longest length L of the feeding paper sheet being nipped and conveyed by 1'and 11 'is L
_{Even if it is 2} , it is conveyed to the left from the sensors S ₅ and S ₅ ′, and when the motor M ₁ is rotated again, it is fed out with a sufficient space between the feeding paper sheets. It becomes.

In FIG. 6, the state where the sensors S ₅ and S ₅ ′ are cut off by the paper sheets is shown as an ON state (start-up line),
The solid line indicates the cutoff state of the shortest sheet L _{1, and} the alternate long and short dash line indicates the cutoff state of the longest sheet L ₂ .

Next, the operation of the separating rollers 22 and 22 will be described in more detail.

When the mounting table 1 is lifted from the state shown in FIG. 3, the kicker rollers 15, 15, the feed belts 20, 20, and the separating roller 22 are provided on the upper surface of the uppermost paper sheet among the accumulated paper sheets on the mounting table 1. , 22 come into contact (shown in FIG. 4). When the motors M ₁ and M ₂ are rotated by the start command, kicker rollers 15 and 15, feed rollers 2 and 2, feed belts 20 and 20, separation rollers 22 and 22, belts 12 and 1
4, the uppermost paper sheet is rotated by the kicker rollers 15 and 15, the feed belts 20 and 20, and the separating rollers 22 and 22, which are in contact with the upper surface of the uppermost paper sheet. (The gap between the rollers 2 and 2 and the gate rollers 7 and 7), and the belts 12, 12 and 1
2, 12 and rollers 11 ', 11', 11 ', 11' are gripped and conveyed to the left.

At the time of feeding the uppermost paper sheet fed first, since the peripheral speeds of the separating rollers 22 and 22 are slightly higher than the peripheral speeds of the kicker rollers 15 and 15 and the feed belts 20 and 20, the uppermost paper sheets are fed. Leaves are separated rollers 22,22
It is self-feeding from the kicker rollers 15 and 15 to the kicker rollers 15 and 15.
This assists the action of the paper sheet 15 to be ejected.

The front edge of the succeeding sheet group is at the standing wall 13 position before the first topmost sheet is fed out.
Kicker rollers 15, 15, feed belts 20, 20,
During the feeding operation of the paper sheets by the separating rollers 22 and 22, especially during the feeding operation of the first to fifth paper sheets, the succeeding paper sheet group is also moved following, and their front end edges are inclined walls. That will be the case for 13A.

Since the front edges of the separating rollers 22 and 22 come into contact with the rear edges of the paper sheets that are about to move toward the inclined wall 13A and rotate, the front and rear edges of the separating rollers 22 and 22 function to be directed toward the inclined wall 13A. . That is, this is the judgment action. In particular, the kicker rollers 15 and 15 caused by the swing of the first arm 14
In addition to the vertical movement of the second arm 21, the separation rollers 22 and 22 are also vertically moved by the swing of the second arm 21.
The lower limits of 2, 22 are set lower than the lower limits of the kicker rollers 15, 15. Therefore, the front edge is inclined wall 13
The lower peripheral region of the separating rollers 22, 22 comes into contact with the trailing edge portion of the paper sheet group that has been moved to the A side and has an inclined stepped shape, and is rotated. The rear edge of the paper sheet group is aligned along the arc shape,
The front edges of these paper sheets are aligned along the inclined wall 13A to assist the separation action of the paper sheets by the inclined wall 13A, and to enter the gate gap in order from the upper front edge of the paper sheets, The separating rollers 22 and 22 guarantee the single sheet separating action.

In particular, the auxiliary action of the separating rollers 22 and 22 for squeezing out the paper sheets and the separating action of the trailing edge of the sheet (and also the separating action of the front edge of the sheet) are on the mounting table 1. Regardless of the amount of paper sheets, the table 1
You can surely do up to the last one sheet above,
The reason is that the kicker rollers 15 and 15 are swingably provided on the first arm 14,
22 is swingably provided on the second arm 21, and the separating rollers 22 and 22 are the kicker rollers 15 and 15.
This is due to the lower position.

The application of the separating rollers 22 and 22 is particularly effective for feeding out a sheet having a constant length (shorter length) regardless of denomination such as Japanese banknotes.

As described above, the peripheral speeds of the separating rollers 22 and 22 are slightly higher than the peripheral speeds of the kicker rollers 15 and 15, so that the kicker rollers 15 and 15 help to prevent the kicking rollers 15 and 15 from being pushed out, and the accumulated paper sheets P are fed out. The rear end in the direction is positively judged forward, and the front end edge of the paper sheet group is aligned with the inclined wall 13A, which contributes to the reliable feeding of the paper sheets P one by one.

In this embodiment, the motor M ₁ is intermittently stopped so as to feed the paper sheets with a space between them. However, the peripheral speed of the belt 12 is the feed roller 2, the feed belts 20, 20. Of course, the peripheral speeds of the kicker rollers 15 and 15 and the separating rollers 22 and 22 may be set higher than the peripheral speeds of the kicker rollers 15 and 15 and the separation rollers 22 and 22 so that the distance between the sheets may be increased by the difference in the peripheral speeds.

Regarding the rotation start timing of the motors M ₁ and M ₂ , in the present embodiment, the positions of the paper sheets on the mounting table 1 and the positions of the kicker rollers 15 and 15 and the separating rollers 22 and 22 are in the feeding preparation state. It is during the feeding command operation after the start. That is, the loading table 1 is raised by the forward rotation of the motor M ₀ , and the upper surface of the paper sheet P on the loading table 1 is moved to the kicker roller 15,
15 and the separating rollers 22 and 22 and push them up, the first arm 14 cuts off the sensor S ₁ and the motor M ₀ is stopped. After the motor M ₀ is stopped, a feeding command operation is performed and the motor M ₁ is stopped. , M ₂ start rotating, but the present invention is not limited to this example, and the motors M ₀ , M ₁ , M ₂ may simultaneously start rotating by performing a feed command operation. In this case, while the mounting table 1 is being raised, the kicker rollers 15, 15, the feed rollers 2, 2,
The feed belts 20 and 20 and the separating rollers 22 and 22 start to rotate, and the feeding of the paper sheets is started immediately after the paper sheets on the mounting table 1 come into contact with them. Then, during feeding of the paper sheets, the kicker rollers 15, 15, the separating roller 22,
22 is pushed up by the paper sheet P on the mounting table 1, the first arm 14 cuts off the sensor S ₁ , the motor M ₀ is stopped,
The subsequent feeding operation is the same as that of the above-mentioned embodiment.

The inclined wall 13A of this embodiment is an example of a linear inclined wall surface, but it goes without saying that it may be an arcuate inclined wall surface. Further, in this embodiment, the motor M
_First , the rotation axis of the feed roller is driven by ₁ , the axis of the kicker roller is driven in conjunction with this rotation axis, and the rotation axis of the separation roller is also linked with the axis of the kicker roller. The transmission system is not limited to this.

The first arm 14 and the second arm 21 are urged downward by their own weight including the weight of the members attached to them, but if further urging force is required, they may be urged by springs. Of course.

[0050]

As described above, according to the present invention, a sheet having the kicker roller, the feed roller, and the gate roller in the upper portion, and the stacking sheets stacked on the mounting table by the ascending / descending movement of the mounting table by the elevating drive means. The uppermost paper sheet of the class is pressed against the kicker roller, the paper sheet is fed by the rotation of the kicker roller and the feed roller, and the mounting table is moved upward by the elevating drive means according to the decrease of the paper sheet. In a paper sheet feeding device that continues feeding, an upper end region of a standing wall against which a front edge of the paper sheet feeding direction is an inclined wall inclined toward a gate roller provided facing the feed roller, and the feed roller The kicker roller is pivotally supported on the first arm which can be vertically swung about the rotation axis of the, and the second arm which can be vertically swung about the axis of this kicker roller. The trailing edge of the paper sheet in the feeding direction is displaced by rotation, and the separating roller that pivots the leading edge of the feeding direction toward the inclined wall is pivotally supported, and the mounting table has a length in the feeding direction that the kicker roller and the separating roller can contact. Since the separating roller comes into contact with the trailing edge of the paper sheet and the succeeding paper sheet group ejected by the kicker roller and the succeeding paper sheet group, the paper sheet group is unwound by the rotation of the separating roller. The trailing edge in the feeding direction is shifted in the feeding direction, and as a result, the leading edge in the feeding direction of the paper sheet group is moved to the inclined wall, and the paper sheets are offset from each other along the inclined wall, and one sheet is separated by the feed roller and the gate roller. The feeding operation is ensured. In particular, the shifting action of the trailing edge of the paper sheet group of the separating roller, and the shifting action of the front edge of the paper sheet group, that is, the sorting action, is always constant regardless of the amount of paper sheets accumulated on the placing table. As a result, it is possible to prevent the simultaneous ejection of two or more sheets, and it is possible to reliably deliver the sheets.

Further, the outer surface of the belt wound between the rotary shaft of the feed roller and the shaft of the kicker roller may be made substantially flush with the peripheral surfaces of the feed roller and the kicker roller. For example, the belt can also share the feeding function and stabilize the feeding of the paper sheets.

If the peripheral speed of the separating roller is set to be slightly faster than the peripheral speed of the kicker roller as in claim 3, the separating operation and the protruding operation can be performed without hindering the protruding by the kicker roller. Auxiliary action can be achieved, and a better determination action can be expected.

Further, according to a fourth aspect of the present invention, there is provided detection means for detecting the swinging lowering of the first arm supporting the kicker roller, and when the detecting means detects the lowering of the first arm, the mounting table is raised. In this case, the paper sheets can always be brought into contact with the kicker roller and the separating roller under a certain condition, and the feeding and separating operations of the paper sheets can be stabilized to contribute to reliable feeding.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of a sheet feeding device according to the present invention in an operating state.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view showing a state before starting the feeding operation.

FIG. 4 is a side view showing the same state at the start of feeding.

FIG. 5 is a side view showing a state where the first arm is lowered as the feeding is advanced.

FIG. 6 is a drive timing chart of motors M ₁ and M ₂ .

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Mounting table 2 Feed roller 3 Rotating shaft 7 Gate roller 12 Standing wall 13 Inclined wall 14 First arm 15 Kicker roller 21 Second arm 22 Separation roller 27 Protrusions 28, 29, 31 Stopper M ₀ Motor as a lifting drive means

Claims (4)

[Claims] 1. A kicker roller, a feed roller, and a gate roller are provided in an upper portion, and the uppermost paper sheet of the paper sheets accumulated on the mounting table by the ascending / descending movement of the mounting table by the elevating and lowering means is the kicker. In a paper sheet feeding device that pushes against a coroller and feeds paper sheets by rotation of a kicker roller and a feed roller and raises and lowers the mounting table by the elevating drive means according to the decrease of paper sheets and continues feeding, The upper end region of the standing wall against which the front edge of the paper sheet in the feeding direction hits is an inclined wall that is inclined toward the gate roller provided facing the feed roller, and can be vertically swung about the rotation axis of the feed roller. A kicker roller is pivotally supported on the first arm, and a rear end edge in the sheet feeding direction is rotated by rotation on a second arm that is capable of swinging in the vertical direction about the axis of the kicker roller. Racemase its feeding direction front edge and axially supports the separation roller to come up to the inclined wall, the mounting table is a sheet feeding device comprising a feed direction length of the kicker roller and the separation roller can contact. 2. A pulley is provided on each of the rotary shaft of the feed roller and the shaft of the kicker roller, a feed belt is wound between these pulleys, and the outer peripheral surface of the feed belt of each pulley portion is provided on the feed roller and the kicker roller. 2. The paper sheet feeding device according to claim 1, wherein the feed belt is substantially the same surface as the outer peripheral surface of the sheet feeding device, and the feed belt is used both for transmitting the rotational force of one of the rollers and for feeding the sheet. 3. A kicker roller shaft and a separating roller shaft are provided with pulleys, respectively, and a drive transmission belt is wound between these pulleys so that the rotation of one shaft is transmitted to the other shaft. 2. The paper sheet feeding device according to claim 1, wherein the peripheral speed of the separating roller is slightly higher than that of the kicker roller. 4. A detection means for detecting swinging and lowering of the first arm is provided, and when the swinging and lowering of the first arm is detected by the detecting means, the ascending / descending driving means of the mounting table is raised. The paper sheet feeding device according to claim 1.