JP2001160167A - Circulating type paper sheet stacker unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make appropriately returnable paper sheets which are caught and left in a separating and sending-out part formed by a sending-out roll and a separation roll to a prescribed stack position and to make surely performable a stack operation and a discharge operation. SOLUTION: The paper sheets to be next sent to a discharge carrying path are held by a separating and sending-out part at one edge and made to wait as caught and left papers with the other edge at a position near the pickup roll. In the case of guiding in new paper sheets or eliminating stacked paper sheets jam, the pickup roll is moved in the direction of retreating from a stacker supporting plate. The send-out roll is made to rotate reversely at the same time with the start of retreating of the pickup roll, and thus, the paper sheets caught and left are returned to a prescribed stack position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet stacker unit for successively storing sheets such as banknotes, and more particularly, to both an operation of stacking sheets and an operation of discharging stacked sheets. And a so-called recirculation type sheet stacker unit.

[0002]

2. Description of the Related Art In recent years, cash register bill depositing and dispensing machines have been widely used in various places. When a banknote is inserted into a cash register banknote pay-in / pay-out device from a predetermined slot, the inserted banknote is first sorted into each denomination, and for each denomination, a true / false discrimination is performed by a discrimination / counting unit. Is performed, and counting is performed one by one. At this time, the banknotes determined as “true banknotes” are sent to the stacker unit through a predetermined transport path and stored there. After a plurality of banknotes are stored in the stacker unit, when a predetermined dispensing button operation is performed, the stored banknotes are discharged (dispensed) one by one from the stacker unit. In addition, a banknote determined as a “fake banknote” or a “significantly damaged banknote” is discharged to a banknote rejection unit, and is appropriately taken out by a user (operator). In such a banknote pay-in / pay-out device, the stacker unit that performs both the deposit stacking operation and the dispensing operation as described above is referred to in the art as a “return type stacker unit”.

In a conventional recirculation type stacker unit, a plurality of bills are collectively inserted into the insertion slot in a state where one long side of each banknote is erected so as to be in contact with the base surface of the insertion slot. In addition, there is an application to a banknote pay-in / pay-out device of a "vertical vertical direction" transport system in which individual banknotes are sequentially transported one by one in the longitudinal direction while maintaining the upright state.

[0004] Each bill to be stacked is sent from the insertion slot to the stacker unit while one long side thereof is in sliding contact with the base surface of the transport passage. For example,
In substantially the same manner as in the configuration of the present invention shown in FIG. 1, the banknote sent in this manner is temporarily stopped in the stacker unit at a predetermined locking position facing one surface of the stacker support plate. Thereafter, the sheet is extruded toward the stacker support plate, and is supported in a state pressed against the one surface of the stacker support plate. In this way,
The bill is introduced into the stacker unit, that is,
Payment processing is performed. By repeating the above operation, a plurality of bills are sequentially stacked on one surface of the stacker support plate. The stacker support plate is constantly urged against the pick roller by a spring.

[0005] The plurality of banknotes stacked on the stacker support plate are those exposed to the outermost (ie,
The picked-up roller and the feed roller on the downstream side of the stack (the most recently stacked and therefore closest to the predetermined locking position) sequentially feed the paper to a dispensing (discharge) transport passage leading to a predetermined discharge port. That is,
The pick roller first contacts the outermost exposed banknote (hereinafter, also referred to as the outermost banknote) and rotates in one direction (for example, clockwise) to feed the banknote on the downstream side. It is fed between the roller and the separation roller. At this time, the next bill (that is, the bill to be dispensed next) is also attracted to the outermost bill by the surface friction action with the outermost bill, and the feed roller and the separation roller are separated. Is to be sent between. Then, the feed roller rotates in the same direction as the pick roller, thereby performing a dispensing process of sending the outermost banknote to the dispensing conveyance path. At this time, the separation roller has a function of preventing the next bill from being sent to the dispensing transport path together with the outermost bill. Thus, the feed roller and the separation roller cooperate to form a separation sending section. According to this configuration, when the outermost banknote has been sent out to the dispensing transport path, the next banknote is pinched between the feed roller and the separation roller at the leading end (downstream side), that is, between the feed roller and the separation roller. Then, the apparatus stands by with the rear end (upstream side) extending to the pick roller.

[0006] The above operation is repeated every time each stacked bill is sent out to the dispensing conveyance path. Therefore, until all the bills stacked on the stacker support plate have been dispensed, the above operation is always performed. One banknote remains between the pick-out roller and the separation / delivery unit formed by the feed roller and the separation roller. Therefore, when a new bill is stacked (payment processing) before all of the stacked bills are dispensed, the separation and delivery section of the feed roller and the separation roller and the pick roller are connected to each other. Banknotes remaining in between (hereinafter
In many cases, a new stack of banknotes is not properly formed due to the interruption of the "biting remaining banknotes".

[0007]

Therefore, in the conventional recirculation type stacker unit of the type described above, before the new bills are stacked (payment processing), the feed roller of the separation and delivery section is dispensed. It is rotated in the opposite direction (for example, counterclockwise direction) during processing, thereby returning the jammed remaining banknote to a predetermined stack position on the stacker support plate. However, in this conventional recirculation type stacker unit, the feed roller is excessively reversed, and the jammed remaining banknotes return too much to a position beyond the predetermined stacking position, or the waist is insufficient. If they are things, they buckle and bend.
As a result, there have been many cases where abnormalities occur in the subsequent deposit processing.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and appropriately returns a sheet that has been caught and left in a separation and delivery section formed by a feed roller and a separation roller to a predetermined stack position. It is an object of the present invention to provide a recirculation type sheet stacker unit capable of reliably performing a stacking operation and a discharging operation.

In order to achieve the above-mentioned object, the present invention provides a stacker supporting plate for supporting each sheet to be introduced at a predetermined stack position; and an outermost sheet among the sheets supported by the stacker supporting plate. A pickup roller for feeding the outermost sheet from the predetermined stack position by frictionally contacting the sheet and rotating in a predetermined direction; and a frictional contact with the sheet sent by the pickup roller. A feed roller for feeding the paper sheet to a predetermined discharge / conveyance path by rotating in a predetermined one direction; and a separation / delivery unit together with the feed roller;
A separation roller that allows only one sheet to be sent to the discharge / conveyance path by the feed roller, and after the sheet is sent to the discharge / conveyance path by the feed roller, A sheet to be sent to the discharge / conveyance path is held at one end thereof by the separation / delivery section, and is positioned near the pickup roller at the other end, and stands by as a jammed remaining sheet. A sheet stacker unit of the type, wherein a retracting unit that retracts the pickup roller in a direction to retract from the stacker support plate, and simultaneously with the start of the retracting by the retracting unit of the pickup roller,
Means for reversing the feed roller in a direction opposite to the one direction, thereby returning the jammed remaining sheet to the predetermined stack position.

[0010] In the recirculation type sheet stacker unit according to the present invention, for example, when a new sheet is introduced for stacking, one end thereof is sandwiched by the separation / delivery unit, and the other end is the pickup roller. The pickup roller is retracted in a direction to retract from the stacker support plate so that the jammed remaining sheet waiting in the vicinity of the sheet does not interfere with the new sheet. The remaining paper sheet is returned to the predetermined stack position. In this way, since the pickup roller is retracted in the direction of retreating from the stacker support plate, the jammed remaining sheet does not buckle in contact with the pickup roller and smoothly moves to the predetermined stack position. Can be returned to you. In addition, since a new sheet is introduced in a state where the jammed remaining sheet is appropriately returned to the predetermined stack position, the new sheet is coupled with the retreat movement of the pickup roller. Can be smoothly and appropriately introduced. The configuration of the invention described above can be effectively used not only when a new paper sheet is introduced but also when, for example, an attempt to eliminate a jam of stacked paper sheets. Therefore, according to the present invention, the stacking operation and the discharging operation can be reliably performed.

For example, the retracting means has a connecting member rotatably mounted at both ends with respect to a rotation axis of the pick roller and a rotation axis of the feed roller, and a connecting member for connecting the pick roller and the feed roller. The connecting member may be constituted by a cam that rotates upward about the rotation axis of the feed roller. Further, the present invention is not limited to this, and the evacuation unit may have a known appropriate configuration.
Further, the means for returning the jammed remaining sheet to the predetermined stack position may be, for example, an endless belt wound around a rotation axis of the pick roller and a rotation axis of the feed roller. The present invention is not limited to this, and may have a known appropriate configuration.

Further, in the present invention, the stacker support plate is constantly urged toward the pickup roller by a spring, and the speed at which the pickup roller is evacuated and moved by the evacuating means depends on the evacuating movement. The speed at which the stacker support plate released from the pick roller is pressed by the spring is set to be higher than the speed at which the pickup roller and the predetermined stack position are moved during the retreat movement of the pickup roller. A gap is instantaneously created between the paper sheets stacked in the stack, and the gap is used to return the jammed remaining paper sheet to the predetermined stacking position. As described above, the jammed remaining sheet is returned to the predetermined stacking position by utilizing a gap that is instantaneously generated between the pickup roller and the sheet stacked at the predetermined stacking position. Regardless of the direction of gravitational force of the leaf, the jammed remaining paper sheet can be appropriately returned to the predetermined stack position.

[0013] Further, a circumferential surface constituting each sheet contact surface of the pick roller and the feed roller has a high friction portion made of a material such as rubber having a high friction coefficient only in a predetermined circumferential length. It is. The high friction portion of the pick roller is set in accordance with a distance at which the sheet is fed from the predetermined stack position to the separation / delivery unit. The distance is set in accordance with the distance at which the sheet is sent from the sheet feeding section to the discharge conveyance path, and the distance at which the jammed remaining sheet is returned from the separation and sending section to the predetermined stack position. By providing such a limited length of the high friction portion, it is possible to reliably avoid returning the jammed sheet to the predetermined stack position too much.

According to one embodiment of the present invention,
When returning the jammed remaining sheet from the separating and sending unit to the predetermined stack position, first, the feed roller is reversely rotated in the other direction, and a position where the leading end of the high friction portion contacts the separating roller. When it is detected that the rotation has come, the reverse rotation is temporarily stopped. Then, the pick roller is retracted and turned to a position away from the stacker support plate. Simultaneously with the start of the retracting rotation of the pick roller,
The reverse rotation of the feed roller is resumed, and the reverse rotation feeds the jammed remaining banknote toward the stack position. Such timing control of the control unit enables more reliable return of jammed remaining sheets.

[0015]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. In the embodiment described below, the principle of the present invention is applied to a recirculating-type stacker unit in a banknote pay-in / pay-out machine for a cash register for a retail business such as a department store or a supermarket.

The banknote pay-in / pay-out device for a cash register is of the "upright vertical direction" transport type, and a plurality of banknotes are erected so that one long side thereof is in contact with the base surface of the insertion slot. Then, the sheets are sequentially conveyed one by one in the longitudinal direction while maintaining the standing state.

FIG. 1 is a plan view showing an entire stacker unit according to an embodiment of the present invention. In FIG. 1, each banknote B to be stacked is indicated by an arrow while one long side of the banknote B slides from a slot (not shown) of the banknote pay-in / pay-out device against a base surface of a transport passage (not shown). It is sent in the A direction. The bills B sent in this manner are temporarily stopped at a predetermined locking position facing one surface of the stacker support plate 2, and then pushed out in the direction of arrow C toward the stacker support plate 2, The stacker support plate 2 is supported while being pressed against the one surface. In this way, the bill B is deposited at a predetermined stack position in the stacker unit. By repeating the stacking operation as described above, a plurality of bills B
Are sequentially stacked while leaning against one surface of the stacker support plate 2.

The plurality of banknotes B stacked on the stacker support plate 2 are sequentially exposed from the outermost one (that is, the one most recently stacked closest to the predetermined locking position). A predetermined discharge port (not shown) is formed by the pick roller 6 and the feed roller 8.
Is delivered to a dispensing (discharging) transport passage 10 leading to the same. The pick roller 6 and the feed roller 8 can be simultaneously rotated in the same direction by, for example, an endless belt 9.

Further, the circumferential surface constituting each bill contacting surface of the pick roller 6 and the feed roller 8 has a high friction portion made of a material having a high friction coefficient, such as rubber, only in a predetermined circumferential length. 6a and 8a (black portions in the figure), and portions other than the predetermined circumferential length are low friction portions. The high friction portion 6a of the pick roller 6 is set in accordance with the distance at which the bill B is sent from the predetermined stack position to the separation sending unit. Further, the high friction portion 8a of the feed roller 8 is connected to the dispensing transfer passage 1
The distance is set so as to correspond to the distance at which the banknote B is sent out to zero, and the distance at which the remaining banknote B is fed back to the predetermined stack position from the separation / delivery unit as described later.

The stacker support plate 2 is constantly urged against the pick roller 6 by a spring 4. The symbol S is the banknote B exposed to the outermost (referred to as the outermost banknote B) among the banknotes B stacked on the stacker support plate 2 urged by the spring 4 (when the banknotes B are not stacked, It is a stopper for maintaining the one side of the stacker support plate 2) at an appropriate position. The “appropriate position” is a position that is substantially parallel to a line connecting the foremost point of the pick roller 6 and the feed roller 8 on the stacker support plate 2 side in the operation position where the pick roller 6 can operate on the bill B. .

Further, according to the embodiment of the present invention,
The pick roller 6 moves away from one surface of the outermost banknote B or the stacker support plate 2 maintained at the proper position as shown by an arrow D at a controlled timing described later, and is newly sent. It is possible to evacuate to a deposit non-interference position for preventing interference with the bill B. That is, the retracting movement of the pick roller 6 is performed so that the bills B newly sent to the stacker unit can be stacked without being disturbed by the pick roller 6. In addition, for example,
The retracting movement of the pick roller 6 to the deposit non-interference position is as follows.
Both ends thereof are rotatably attached to the rotation shaft 6b of the pick roller 6 and the rotation shaft 8b of the feed roller 8, and are connected via a connecting member (not shown) connecting the pick roller 6 and the feed roller 8. May be. That is, in the embodiment of FIG.
The pick roller 6 can be retracted to the deposit non-interference position by rotating upward about the rotation shaft 8b of the feed roller 8 via a cam (not shown) or the like. Further, a plurality of radial mini blades 14 are attached to the rotating shaft 8b of the feed roller 8 for the purpose described later.

According to this embodiment, the pick roller 6
Is set so as to be faster than the speed (momentum) at which the stacker support plate 2 released from the pick roller 6 is pushed up by the spring 4 with the retreating movement. That is, the speed of the retracting movement of the pick roller 6 is set to be higher than the speed of the spring 4 following the stacker support plate 2.

More specifically, when a predetermined dispensing button operation is performed after a plurality of banknotes B are stacked at the predetermined stacking position, the pick roller 6 firstly moves at its high friction portion 6a. It rotates in one direction (for example, clockwise in FIG. 1) in contact with the outermost banknote B at the stack position, and thus feeds the banknote B between the feed roller 8 and the separation roller 12. At this time, the next bill (that is, the next bill to be dispensed) B is also attracted to the outermost bill B by the surface friction action with the outermost bill B, and the feed roller 8 And the separation roller 12.
Therefore, in the bill stack unit of this configuration,
As before, when the outermost banknote B has been sent out to the dispensing transport path 10, the next banknote B automatically moves between the feed roller 8 and the separation roller 12 at the leading end. , And waits in a state where the rear end portion extends to the pick roller 6.

Then, the feed roller 8 performs a dispensing process in which the outermost banknote B is sent out to the dispensing conveyance path 10 by rotating in one direction. At this time, the separation roller 12 facing the feed roller 8 prevents the next bill B from being sent out to the dispensing transport path 10 together with the outermost bill B. In this way, the feed roller 8 and the separation roller 12 form a separation sending section.

The above operation is repeated every time one bill B is sent out to the dispensing and conveying path 10. Therefore, unless all the bills B stacked on the stacker support plate 2 are dispensed, the bill B is not processed. , Always one bill B,
It will remain between the pick-up roller 6 and the separation and delivery section formed by the feed roller 8 and the separation roller 12. Therefore, in the past, when a new banknote B is stacked (payment processing) before all of the stacked banknotes B are subjected to the payment processing, the banknote B includes the feed roller 8 and the separation roller 12. Banknotes remaining between the separation and delivery unit and the pick roller 6 (hereinafter, referred to as “notes”)
B (hereinafter referred to as “biting remaining bills”) hinders the stacking of new bills B in some cases. Therefore, the banknote stack unit according to the present embodiment rotates the feed roller 6 of the separation / delivery unit in a direction opposite to that during the dispensing process immediately before a new banknote B is stacked (payment process). The biting remaining bills B are returned to a predetermined stacking position on the stacker support plate. According to the present embodiment, the following control is performed via the control unit 100 in order to appropriately return the jammed remaining banknote B to the stack position before the new deposit operation. I have.

When the feed roller 8 is rotated in the one direction by a predetermined angle, and one banknote B is sent out to the dispensing and conveying path 10 through the high friction portion 6a, at that point, the feed roller 8 is rotated. Is stopped in the one direction, and the feed roller 8 has a home position in which the high friction portion 6a is located 180 ° opposite to the separation roller 12 (that is, directly above in the example of FIG. 1). Wait in position.

Next, the feed roller 8 is rotated in the opposite direction (counterclockwise direction in FIG. 1), and the tip of the high friction portion 8a in the counterclockwise direction contacts the separation roller 12. When the feed roller 8 is detected to have reached the position (FIG. 1 shows the state at this time), the reverse rotation of the feed roller 8 is temporarily stopped.

Then, as shown in FIG. 2, the pick roller 6 is retracted and rotated to the deposit non-interfering position which moves away from the stacker support plate 2. FIG. 2 shows the retreat rotation of the pick roller 6 in an exaggerated manner.
It retracts and turns by a smaller angle than that of the example shown. Also,
The position of the pick roller 6 is sequentially detected by a sensor (not shown), and a signal indicating the detected position is provided to the control unit 100.

As described above, when the pick roller 6 retreats to the deposit non-interference position, the retracting movement speed is faster than the follow-up speed of the stacker support plate 2 by the spring 4 as described above. Outermost banknote B
(When the bills B are not stacked, a gap is instantaneously formed between the bill B and the stacker support plate 2). In this embodiment, the jammed remaining banknote B is returned to the stacking position by using the gap. In this manner, the bite remaining banknote B is returned to the predetermined stacking position by utilizing the gap that is instantaneously generated between the pickup roller 6 and the banknotes B stacked at the predetermined stacking position. Regardless of the direction of gravity of the banknote B, that is, even when applied to a cash registering and dispensing machine of the upright vertical transport system as in this embodiment, the biting remaining banknote B is appropriately placed at the predetermined stack position. Can be returned.

That is, at the same time when the pick roller 6 starts retreating to the deposit non-interfering position, the reverse rotation of the feed roller 8 is restarted, and the reverse rotation causes the remaining paper money B to be fed toward the stack position. Can be In this way, the biting residual banknote B being returned passes through the contact point between the feed roller 8 and the separation roller 12, and when the feeding force of these rollers 8, 12 is lost, the biting residual banknote B is fed to the feed roller 8 Is finally returned to the stack position by the mini blades 14 attached to the rotary shaft 8b. As a result, the jammed remaining banknotes B can be properly restacked at the predetermined stacking position. Therefore, newly sent banknotes B are not interfered by the first-arriving banknotes B, It can be stacked smoothly. The combination of the timing control and the limited high friction portions 6a, 8a of the pick roller 6 and the feed roller 8 allows the remaining bills B to be jammed.
Is returned to the predetermined stack position.

The retracting rotation of the pick roller 6 to the deposit non-interference position and the returning operation of the jammed remaining banknote B due to the reverse rotation of the feed roller 8 in synchronization with the rotation eliminate the jam of the banknote B. It can also be effectively executed.

The present invention is not limited to banknotes, and can be applied to a recirculation type sheet stacker for sequentially stacking and discharging other sheets. In this case, the aforementioned "banknote"
The term shall be read as "paper." That is, for example, the outermost banknote is the outermost banknote, the biting remaining banknote is the biting remaining banknote, and the like.

[0033]

As described above, according to the present invention, the pickup roller is retracted in the direction of retreating from the stacker support plate so that the jammed remaining sheet does not interfere with, for example, a newly introduced sheet. At the same time, the jammed remaining sheet is returned to the predetermined stack position. In this way, since the pickup roller is retracted in the direction of retreating from the stacker support plate, the jammed remaining sheet does not buckle in contact with the pickup roller and smoothly moves to the predetermined stack position. Can be returned to you. Also,
In this way, a new sheet is introduced in a state where the jammed remaining sheet is appropriately returned to the predetermined stack position,
In combination with the retraction movement of the pickup roller, an excellent effect that the new paper sheet can be smoothly and appropriately introduced can be obtained. Further, the combination of the timing control and the limited high-friction portion of the pick roller and the feed roller ensures that excessive return of the jammed sheet to the predetermined stack position is avoided. In addition, the invention having such a configuration can solve the problem of jamming stacked paper sheets.
Acts usefully. Therefore, according to the present invention, the stacking operation and the discharging operation can be reliably performed.

[Brief description of the drawings]

FIG. 1 is a longitudinal side view of a reflux type stacker unit according to an embodiment of the present invention.

FIG. 2 is a view for explaining the operation of the recirculation type stacker unit according to the embodiment;

[Explanation of symbols]

 B Banknote 2 Stacker support plate 6 Pickup roller 6a High friction part 8 Feed roller 8a High friction part 10 Dispensing conveyance path 12 Separation roller 100 Control unit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E040 AA01 BA06 DA08 FA03 FC05 FD02 FG11 FG13 3F048 AA06 AB03 BA13 BB05 EA13 EA15 3F054 AA03 AC06 BD02 BD07 BJ04

Claims (4)

[Claims] A stacker support plate for supporting each of the paper sheets to be introduced at a predetermined stack position; and a predetermined one of the paper sheets supported by the stacker support plate being brought into frictional contact with an outermost paper sheet. A pickup roller for feeding the outermost sheet from the predetermined stack position by rotating in the direction; and rotating in the predetermined direction by frictionally contacting the sheet sent by the pickup roller. A feed roller for feeding a sheet to a predetermined discharge / conveyance path; and a separation roller for forming a separation / delivery section together with the feed roller so that only one sheet is fed to the discharge / conveyance path by the feed roller. After one sheet is sent to the discharge / conveyance path by the feed roller, a sheet to be sent to the next discharge / conveyance path is A recirculation-type sheet stacker unit configured to be held as a jammed remaining sheet while being held at one end by the separation / delivery unit and positioned near the pickup roller at the other end. A retracting unit for retracting the retracting direction from the stacker support plate, and simultaneously with the start of the retracting of the pickup roller by the retracting unit, the feed roller is reversely rotated in a direction opposite to the one direction, whereby Means for returning the jammed remaining sheet to the predetermined stacking position. 2. The stacker support plate is constantly urged toward the pickup roller by a spring, and the speed at which the pickup roller retreats by the retraction means is increased by the pick roller along with the retraction movement. The stacker supporting plate released from the spring is set to be faster than the speed pressed by the spring. With this setting, the paper stacked on the pickup roller and the predetermined stack position at the time of the retracting movement of the pickup roller is set. 2. A recirculation system according to claim 1, wherein a gap is instantaneously formed between the sheet and the leaf, and the jammed remaining sheet is returned to the predetermined stack position by using the gap. Paper stacker unit. 3. A circumferential surface forming a sheet contact surface of each of the pick roller and the feed roller is a high friction portion made of a material having a high friction coefficient only in a predetermined circumferential length; The high friction portion of the pick roller is set in accordance with a distance at which the sheet is fed from the predetermined stack position to the separation / delivery unit. 2. The paper feeding device according to claim 1, wherein the paper feeding device is formed so as to correspond to a distance at which a sheet is sent from the sheet feeding portion to the discharge conveyance path and a distance at which the jammed remaining sheet is returned from the separation and sending portion to the predetermined stack position. Reflux type paper stacker unit. 4. When returning the jammed remaining sheet from the separation / delivery section to the predetermined stack position, the feed roller is reversed in the other direction, and the leading end of the high friction portion is the separation roller. When it is detected that the pick roller has come to a position in contact with, the reverse rotation is temporarily stopped, the pick roller is retracted to a position away from the stacker support plate, and simultaneously with the start of the retract rotation of the pick roller, Restart the feed roller reverse rotation, and by this reverse rotation,
The recirculation-type sheet stacker unit according to claim 1, further comprising a control unit that controls the feeding of the jammed remaining banknotes toward the stack position.