JPH09301593A - Paper sheet stacker and receiving/paying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold various paper sheets positively sheet by sheet to stack them regardless of the paper quality, low stiffness and length of the paper sheets by providing engaging holding protrusions for taking in and conveying the paper sheets while holding the tip parts of. the paper sheets led to a stacking case. SOLUTION: Engaging holding protrusions 32... for holding the tip of a bill A, a paper sheet, engagedly are protrusively formed on the belt outer surface of a take-in belt 25 of a bill stacker, every constant space in the longitudinal direction of the belt 25, and an engaging recessed part 33 of a V-shape is formed between the engaging holding protrusion 32 and the belt outer surface. The tip part of the bill A led into a carry-in part is received into this engaging recessed part 33, and the bill A is taken in and conveyed along the belt outer surface up to an inner part of a stacking case 22 while holding the tip part of the bill A engagedly. Even if a bill with low stiffness, a deformed bill in a poor state, a large-sized bill or a long bill is led into the stacking case 22, take-in action is performed while maintaining a horizontal state by holding the tip part so as to perform carry-in action without a tip hanging state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet stacking device that is internally configured in an automatic transaction machine such as a banknote depositing / dispensing machine, and more specifically, it can stably transfer paper sheets such as banknotes one by one. The present invention relates to a paper sheet stacking device and a depositing / dispensing device for collecting and stacking.

[0002]

2. Description of the Related Art A banknote stacking apparatus will be described below as an example. As shown in FIG. 17, this banknote stacking apparatus is provided with a storage box 172 for stacking and stacking banknotes 171 taken in from the preceding stage. A stacking roller 173 for collecting bills and a counter roller 174 are provided on one side of the upper part of the storage box 172, and the bills 171 guided from the previous stage at the time of stacking bills are allowed to fall freely to be piled down or arranged at the gathering position. Impeller 1
Forcibly knock off one by one at 75, and the lower storage box 17
Collected in 2. Further, a carry-in guide plate 176 is arranged above the storage box 172 along the carry-in guide passage, and a lifting device 178 for moving the stacking plate 177 up and down in response to a bill 171 take-in operation is provided below the storage box 172. Are installed.

By the way, when the banknote 171 is stored in the storage box 172, the banknote 171 is carried in in a substantially horizontal direction from one side of the upper part of the storage box 172, and straightly advances as it is, and the vertical wall surface 179 behind the storage box 172. The leading edge of the banknote comes into contact with the banknote 171.
It receives the accumulation action of 5 and is accumulated below.

In this case, if the paper quality of the banknotes 171 has a normal elasticity, as shown in FIG. 18, the stacking type 173 and the counter roller 174 for collecting the banknotes are of an overlap type. Stabilization of the stacking operation is achieved by causing the transport mechanism 180 to take in and transport the banknotes 171 by bending the entire bills 171 into a wavy shape.

However, when a weak banknote or a damaged banknote is carried in, sufficient rigidity cannot be obtained as the paper quality deteriorates, and as shown in FIG. 19, large banknotes and long banknotes are not provided. When 191 was carried in, a drooping state 192 occurred, which sometimes caused a stack jam 193.

[0006]

SUMMARY OF THE INVENTION Therefore, according to the present invention, it is possible to reliably hold various sheets one by one and carry out the stacking operation regardless of the quality, weakness and length of the sheets. An object of the present invention is to provide a paper sheet stacking device and a depositing / withdrawing device capable of stable stacking performance and highly reliable stacking processing.

[0007]

According to the first aspect of the present invention,
A paper sheet stacking device for picking up and stacking paper sheets one by one in a stacking unit, and including a front end holding means for holding and transferring a front end portion of the paper sheets guided to the stacking unit. Is characterized by.

According to a second aspect of the present invention, there is provided a paper sheet stacking device for picking up and stacking paper sheets one by one into a stacking unit, and detecting a conveying position of the paper sheets taken in the stacking unit. And a control means for synchronously controlling the sheet take-in timing and the leading edge holding operation of the sheet based on the detection signal of the conveying position detecting means. .

The invention according to claim 3 is characterized in that an engagement holding projection as a tip holding means for engagingly holding the tip of the paper sheet is formed on the belt surface for taking in and conveying.

According to a fourth aspect of the present invention, there is provided switching means for switching an engagement holding projection for engagingly holding the front end of the paper sheet between the engagement position and the retracted position.

The invention according to claim 5 is characterized in that the leading end holding means is constituted by a suction holding means for sucking and holding paper sheets.

The invention according to claim 6 is characterized in that the front end holding means is constituted by a highly adhesive holding member having a high contact resistance with the paper sheet.

According to a seventh aspect of the present invention, there is provided a depositing / dispensing device including a paper sheet stacking device.

[0014]

According to the present invention, when the sheets are taken into the stacking unit one by one and stacked, the leading ends of the sheets taken into the stacking unit are held one by one by the tip holding means. Take in and transport.

Similarly, when the paper sheets are taken into the stacking unit one by one and stacked, the paper-conveying position detecting means detects the carrying position of the paper sheets taken into the stacking unit, and based on this, The control means controls the timing of taking in the sheets and the operation of holding the leading edge of the sheets in synchronization.

Further, when the sheets are taken into the accumulating unit one by one and accumulated, the leading ends of the sheets taken into the accumulating unit are formed on the belt surface for taking-in and conveying and are used for holding the leading ends. The mating and holding projections engage and hold and carry.

Further, when picking up and stacking the sheets one by one in the stacking unit, the sheets are held and conveyed by the engagement holding projections to the pick-up completion position, and switched at the time when the pick-up completion position is reached. The means switches the engaging and holding projections to release the engaging and holding of the paper sheets to perform the stacking operation.

Similarly, the leading ends of the paper sheets carried into the stacking section are suction-held by the suction holding means to be conveyed, or the paper sheets are closely held by the high-adhesion holding member to be carried into the stacking section.
Such a paper sheet stacking device is internally configured in the depositing / dispensing device for depositing / dispensing.

[0019]

As a result, at the time of stacking the paper sheets, the leading end portion of the paper sheets guided to the stacking portion is taken in and conveyed while being held by the front end holding means, so that the paper sheets guided to this stacking portion are the leading ends. The sheets are held and conveyed to the stacking position while being pulled, and the paper sheets are carried straight into the space of the stacking section to perform a stable stacking operation one by one. Therefore, even if weakly stiff paper sheets, deformed poor-quality paper sheets, large-sized paper sheets, or long paper sheets are guided to this stacking portion, a reliable take-up operation without a drooping state is performed. It can be carried out, and stable accumulation can be carried out by eliminating the occurrence of jam caused by the drooping.

Further, when the paper sheets are stacked, the control means detects the transport position of the paper sheets carried into the stacking section by the transport position detection means, and the control means takes in the paper sheets and the leading edge of the paper sheets. Since the holding operation is controlled in synchronization with each other, the paper sheets can be individually held and accurately stacked.

Further, when an engaging and holding projection for holding the leading end of the paper sheet is formed on the take-in and carrying belt, the paper sheet can be naturally taken in along the belt surface. Further, when the engagement holding projection is allowed to switch between the engagement position and the retracted position according to the take-in position of the paper sheet, the paper sheet is engaged and held to the stacking position and guided to reach the stacking position. By releasing the engagement holding action at the time point, it is possible to align the sheets at the optimum stacking position and perform the stacking operation.
Similarly, if the paper sheets carried into the stacking unit are configured to be suction-held, taken in, and conveyed, a stable conveyance operation suitable for holding and conveying the planar paper sheets can be obtained. Further, if the sheet is configured to be closely held by the high-adhesion holding member having high contact resistance and taken in and conveyed, the sheet is brought into close contact with the member in a planar manner, and similarly stable holding and conveying can be performed. can get.
If such a paper sheet stacking device is internally configured in the depositing / dispensing device, a stable depositing / dispensing process operation of the banknotes stacked in the inside can be performed.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. [First Embodiment] FIG. 1 shows a banknote processing device 11 which is internally provided in a banknote depositing / dispensing machine. This banknote processing device 11 has a deposit opening 12 and a return opening serving as a return opening on the upper front surface (upper left in the figure). Thirteen
Is provided, and an identification unit 14 for identifying deposit / withdrawal banknotes, a temporary storage unit 15 for temporarily storing the banknote A for return / acquisition, and a banknote A are provided inside the communication with the deposit / withdrawal ports 12 and 13. Built-in first to fourth cassettes C1 to C4 to be stored according to denominations and a reject cassette C5 to collect banknotes judged to be defective in identification, unfit banknotes, forgotten banknotes, etc. They are connected by the transfer lines L1 and L2.

The above-mentioned identification section 14 is used for the upper transfer line L1.
And the lower conveyance line L2 are arranged on a common line, and the outer shape of the bill passing therethrough, the denomination determining element, and the authenticity determining element are captured and identified.

In this case, the upper side of the banknote handling apparatus 11 is provided in the banknote handling group 16 for banknote transport, and the lower side is provided in the banknote handling group 17 for banknote storage. It is composed of and.

The transfer processing group 16 on the upper side includes a deposit port 12,
Up and down of an upper transport line L1 connecting the dispensing port 13, the identifying unit 14, and the temporary holding unit 15 in a loop, and a lower transport line L2 connecting the identifying unit 14 and the cassettes C1 to C5 in a loop. Of the upper and lower transfer lines L1 and L2 and the cassettes C1 to C5 below each of them, the passage detection sensor S for detecting and confirming the passage of the banknote A. A large number of ... Are arranged to detect and confirm the transport processing state.

The storage processing group 17 on the lower side includes first to fourth cassettes for storing 1,000-yen bills, 5,000-yen bills, 10,000-yen bills, spare bills and mixed bills from the front side to the rear side of the banknote handling apparatus 11. C
1 to C4 and reject cassette C5 are arranged,
Banknotes are taken in and out of these cassettes to allow deposit and withdrawal transactions.

The banknote handling apparatus 11 thus configured
Holds the banknote A, which has been inserted into the deposit port 12 during the deposit transaction, in the temporary deposit section 15 through the deposit path for carrying the transfer process in the order of deposit port 12 → identification unit 14 → temporary reserve unit 15 to confirm the deposit. Then, the banknotes are fed out from the temporary holding unit 15 and transferred in the order of the temporary holding unit 15 → identification unit 14 → cassettes C1 to C5.
Sort and store in C5.

When the deposit is canceled, the temporary holding section 15
The banknotes that have been reserved are fed out and are returned to the withdrawal port 13 which also serves as a deposit return port through a return transport line L3 which is branched and connected to the upper transport line L1. Further, at the time of withdrawal, the banknotes fed from the respective cassettes C1 to C4 corresponding to the denomination are held in the temporary holding section 15 via the lower transfer line L2 and the upper transfer line L1, and the banknote A is released after the payment transaction is confirmed. It is opened and allowed to be taken out from the dispensing port 13 above it.

2 and 3 show a banknote stacking device 21 of a cassette. The banknote stacking device 21 is applied to the first to fourth cassettes C1 to C4, and the first cassette C1 will be described below as an example.

The banknote stacking device 21 includes a stacking case 22 for stacking and stacking the banknotes A ... One by one in the vertical direction, and a banknote taking-in mechanism provided opposite to a carry-in port 23 opened at one side of the upper part of the stacking case 22. 24, a take-in belt 25 for taking up the bills arranged on the upper part of the stacking case 22, and an elevating device 27 for moving the stacking plate 26 up and down in accordance with the stacking amount of the bills A.

The above-mentioned bill taking-in mechanism 24 has a large-diameter pair of taking-up belts 25 arranged on the upper surface of the stacking case 22 so as to be inclined along the bill taking-in direction, and in an upper and lower position sandwiching the carry-in port 23 in an overlapping manner. The accumulating roller 28, a small-diameter vane roller 29, a guide roller 30 for a carry-in guide, which is provided in front of the accumulating roller 28, and a carry-in guide plate 31 provided along the same roller 28, are guided here. Banknote A
The stacking plate 2 and the blade roller 29 are sandwiched one by one to take in the bill, and when the bill A is taken in, the bill roller 29 is struck and quickly lowered downward.
Stack 6 on top of each other.

In this case, on the outer surface of the take-in belt 25, engagement holding projections 32 ... Which engage and hold the front end of the bill A are formed to project at regular intervals in the belt length direction. V-shaped engaging recess 33 between the outer surface of the belt
Are formed in the engaging recess 33, as shown in FIG.
The front end of the bill A guided to the carry-in port 23 is received, and FIG.
As shown in, while the leading end of the bill A is engaged and held, the bill A is taken in and conveyed along the outer surface of the belt to the inside of the stacking case 22.

At this time, the bill A is conveyed with its front end pulled, and is carried straight into the space inside the stacking case 22 from the upper side in a horizontal state. Therefore, the collection case 2
Even if a weak banknote, a deformed banknote in a bad state, a large banknote, or a long banknote is introduced into 2, the leading end is held and the loading operation is performed while maintaining the horizontal state, so that there is no drooping state. Carry-in operation can be performed.

The bill A led to the stacking case 22 is
As shown in FIG. 6, the leading edge of the bill comes in contact with a vertical plate 34 also serving as a carry-in stopper that stands upright in the back of the stacking case 22 to be disengaged from the engaging recess 33, so that the bill remains behind in the horizontal carry-in state. The end portions are flung by the blade roller 29 and accumulated below. The engagement concave portion 33 is such that the front end portion of the bill A can be engaged and held when receiving the bill A, and the engagement holding projection 32 can be easily detached when the bill in the engaged holding state abuts the vertical plate 34. Is formed to have a certain length and inclination.

[Second Embodiment] This banknote stacking apparatus is shown in FIG.
As shown in FIG. 5, a bill detection sensor S is arranged in the preceding stage of the bill taking passage 71, and the bills taken into the collecting case 74 via the collecting roller 72 and the taking belt 73 based on the detection signal of the bill detecting sensor S. The conveyance position of A is detected, the timing of taking in the bill A is controlled based on this detection signal, and as shown in FIG. 8, a V-shaped portion formed between the engagement holding projection 75 and the outer surface of the belt 73. Engagement recess 76
In addition, the leading end of the banknote A introduced here is carried in and securely held.

FIG. 9 shows a control circuit block diagram of the banknote stacking device of the second embodiment, in which the CPU 91 controls each circuit device according to the program stored in the ROM 92, and the control data is stored in the RAM 93 so as to be readable. To do.

The CPU 91 uses the stacking case 7 when stacking banknotes.
When the bill detection sensor S detects the conveyance position of the bill A taken in by 4, the output timing of the stepping motor M1 that rotationally drives the accumulation roller 72 and the take-in belt 73 is controlled from the detected conveyance position of the bill, When the leading edge of the bill A taken in is separated from the stacking roller 72 and comes into contact with the take-in belt 73, the engaging recess 7 of the belt 73 is taken.
6 is entered and the intake control is performed in synchronism so as to correspond to the engagement. Further, the stacking plate lifting motor M2 is driven in accordance with the amount of stacked banknotes to move the stacking plate of the stacking case 74 up and down.

[Third Embodiment] This banknote stacking apparatus is shown in FIG.
0, as shown in FIG.
A case in which a projection tilting mechanism 103 for raising / tilting 02 is provided is shown. The projection tilting mechanism 103 is disposed above the stacking case 104, and as shown in FIG. 11 and FIG. A rear projection 102a projecting to the belt rear side of the engaging and holding projection 102 that is attached through is provided on the rear surface side of the take-in belt 101 for tilting impeller 105 for initial tilting and tilting guide for continuous tilting. Engagement holding protrusion 1 tilted with the plate 106 and standing up
It is a mechanism to lean 02.

Therefore, when the bill A guided into the stacking case 104 is taken in and conveyed while the front end of the bill A is engaged and held in the engaging recess 107, the rear projection 102a has the tilting impeller in the course of this conveyance. At the same time as tilting operation corresponding to 105, the engaging holding projection 102 on the front surface tilts, and when the tip end of the banknote A intervenes during this tilting, the tip end of the banknote A engages with the belt outer surface. The paper money A is sandwiched by the holding projections 102, and the leading edge of the banknote A is conveyed while being held reliably and reliably.

The back projection 102a tilted by the tilting impeller 105 is tilted by a tilt guide plate 106 that is long along the back side of the take-in belt 101, and is located immediately before the vertical plate 108 behind the stacking case 104. At the position, the tilting action of the tilt guide plate 106 is released, and the original standing state is restored. For this reason, the engagement holding projection 102 is formed of a leaf spring material or the like capable of elastic return to give a restoring force.

In this way, the engagement holding projection 102 is raised /
Tilt to securely guide the bills to the stacking position,
By releasing the engagement holding action at the time of reaching the stacking position, the banknotes can be stacked and operated at the optimum stacking position.

[Fourth Embodiment] This banknote stacking apparatus is shown in FIG.
3 shows a case in which the suction belt 132 disposed above the collecting case 131 is provided with the suction holding mechanism 133. The suction holding mechanism 133 faces the upper space of the collecting case 131. The air suction device 1 on the back side of the belt 132 over the entire length in the taking-in direction.
As shown in FIG. 14, the banknote A introduced here is placed in a horizontal state through the air suction device 134 and the suction belt 135, which are opened at equal intervals, as shown in FIG. It is suction-held on the belt surface, and is taken along with the belt surface while being conveyed along with the belt surface. The tip of the banknotes that have been sucked and conveyed is the accumulation case 13
1 is sucked and conveyed until just before it reaches the vertical plate 136 standing upright at the back of the bill 1. As shown in FIG. Separate them and force them downward. In this way, when the take-in belt is provided with the suction function, a carrying operation suitable for taking-in and carrying flat bills can be obtained.

[Fifth Embodiment] This banknote stacking apparatus is shown in FIG.
As shown in FIG. 6, a case is shown in which a close contact take-in belt 161 in which the belt itself has a paper money close contact function is arranged above the stacking case 162.
1 is formed using, for example, an adhesive material, and the bill A guided here is held in a horizontal state so as to be lightly adhered to the upper belt surface and taken along with the belt surface in a state of being integrated with the belt surface. Transport. The leading end of the adhesively conveyed bill is brought into contact with the vertical plate 163 standing upright in the back of the stacking case 162, so that the bill falls downward from the belt surface. In this way, when the take-in belt is provided with a close contact function, a stable carrying operation suitable for taking-in and carrying flat bills can be obtained. In addition to the adhesive material, the contact function can be formed by using a material or surface shape having high contact resistance with the bill A.

As described above, at the time of stacking the bills, the bills guided to the stacking case are taken in and conveyed while being held, so that the bills guided to the stacking case are held and transported with the leading end pulled, Is carried straight into the space of the stacking case and a stable stacking operation is performed one by one. Therefore, even if a weak banknote, a deformed banknote in a bad state, or a large banknote or a long banknote is introduced into the stacking case, a reliable take-in operation without a drooping state can be performed, and a drooping Accumulation that eliminates the jam caused by

Further, since the bill taking-in timing and the leading edge holding operation of the bills are controlled in synchronization with each other based on the detection of the carrying position of the bills carried in by the bill detecting sensor at the time of stacking the bills, the bills are individually fed one by one. It can be held accurately and can be accurately integrated.

Further, in the case where the bill is conveyed while holding the leading end of the bill by forming the engagement holding projection on the take-in belt, the bill can be naturally taken along the belt surface. Further, when the engagement holding projection is configured to be switched to the upright / tilting position according to the bill taking position, it is possible to securely engage and guide the bill to the stacking position while grasping the leading end of the bill. It is possible to perform the stacking operation by aligning the banknotes to the stacking position by releasing the engagement holding action when the stacking position is reached. Similarly, when the banknotes carried into the stacking case are suction-held and taken in and carried, a stable planar carrying operation suitable for taking-in and carrying planar bills can be obtained. Further, when the bills are configured to be closely held by the adhesive material and taken in and conveyed, the bills are brought into close contact with the material in a planar manner, and similarly stable take-in and conveyance can be obtained. If such a banknote stacking device is internally configured in the depositing / dispensing device, it is possible to perform stable depositing / dispensing process of the circulation banknotes that are internally stacked.

In the correspondence between the present invention and the configuration of the above-described embodiment, the paper sheet stacking device of the present invention corresponds to the banknote stacking device 21 of the embodiment, and hereinafter, similarly, the depositing / dispensing device is a banknote processing device. It corresponds to a banknote depositing / dispensing machine having the device 11 built therein, paper sheets correspond to the banknote A, and the accumulating sections are accumulating cases 22, 74, 104, 13 of the first to fourth cassettes C1 to C4.
1 and 162, the tip holding means is the engagement holding projection 3
Uptake belts 25,73,1 with 2,75,102
Corresponding to 01, the conveyance position detection means is a bill detection sensor S
The control means corresponds to the CPU 91, the switching means corresponds to the projection tilting mechanism 103, and the suction holding means corresponds to
The high adhesion holding member corresponds to the suction holding mechanism 133, and the high adhesion holding member corresponds to the close contact belt 161. However, the present invention is not limited to the configuration of the above-described embodiment.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a banknote processing device internally configured in a banknote depositing / dispensing machine according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a usage state of the banknote stacking apparatus according to the first embodiment of the present invention.

FIG. 3 is a side view of essential parts showing a stacking state of the banknote stacking apparatus according to the first embodiment of the present invention.

FIG. 4 is a side view of essential parts showing an initial loading state of banknotes in the banknote stacking apparatus according to the first embodiment of the present invention.

FIG. 5 is a side view of the essential parts showing a state in which weak banknotes are loaded into the banknote stacking apparatus according to the first embodiment of the present invention.

FIG. 6 is a side view of the essential parts showing the bill descending and stacking state of the banknote stacking device according to the first embodiment of the present invention.

FIG. 7 is a side view of a main part showing a banknote stacking device according to a second embodiment of the present invention.

FIG. 8 is an explanatory view showing a bill engagement timing control state according to the second embodiment of the present invention.

FIG. 9 is a block diagram of a control circuit of the banknote stacking device according to the second embodiment of the present invention.

FIG. 10 is a side view of the essential parts showing the banknote stacking device of the third embodiment of the present invention.

FIG. 11 is an enlarged side view of essential parts showing a bill tilting mechanism of a third embodiment of the present invention.

FIG. 12 is a perspective view showing an upright state of an engagement holding projection according to a third embodiment of the present invention.

FIG. 13 is a side view of the essential parts of the banknote stacking device of the fourth embodiment of the present invention, showing the banknote suction and conveyance state.

FIG. 14 is an enlarged cross-sectional view of a main part of a suction holding mechanism according to a fourth embodiment of the present invention.

FIG. 15 is a side view of the essential parts showing the reverse ejection state of the banknote stacking device of the fourth embodiment of the present invention.

FIG. 16 is a side view of the essential parts of the banknote stacking device of the fifth embodiment of the present invention, showing a state in which the banknotes are in close contact and conveyed.

FIG. 17 is a side view showing a banknote stacking state of a conventional banknote stacking apparatus.

FIG. 18 is a main part front view showing a bill taking-in state of a conventional bill collecting apparatus.

FIG. 19 is a side view showing a state in which the leading edge of the bill is carried in and a jam is generated in the conventional bill stacking apparatus.

[Explanation of symbols]

 11 ... Banknote processing device A ... Paper currency C1 to C4 ... Cassette 21 ... Banknote stacking device 22, 74, 104, 131, 162 ... Stacking case 24 ... Banknote take-in mechanism 25, 73, 101, 132 ... Take-in belt 32, 75, 102 ... Engagement holding protrusion 33, 76, 107 ... Engagement concave part S ... Banknote detection sensor 91 ... CPU 102a ... Back protrusion 103 ... Protrusion tilting mechanism 133 ... Suction holding mechanism 134 ... Air suction device 161 ... Adhesion take-in belt

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B65H 31/04 B65H 31/04 G07D 9/00 416 G07D 9/00 416C

Claims (7)

[Claims] 1. A paper sheet stacking device for picking up and stacking paper sheets one by one in a stacking unit, and holding the leading end of the paper sheet guided to the stacking unit while taking in and transporting it. A paper sheet stacking device provided with a means. 2. A paper sheet stacking device for picking up and stacking paper sheets one by one in a stacking unit, and a transport position detecting means for detecting a transport position of the paper sheets loaded in the stacking unit. 2. The paper sheet stacking apparatus according to claim 1, further comprising: control means for synchronously controlling a paper sheet take-in timing and a paper sheet front end holding operation based on a detection signal of the transport position detection means. 3. The paper sheet stacking device according to claim 1, wherein the front end holding means has an engaging and holding projection which engages and holds the front end of the paper sheet, and is formed on a belt surface for conveyance. 4. The paper sheet stacking device according to claim 3, further comprising switching means for switching the engagement holding projection between the engagement position and the retracted position. 5. The paper sheet stacking apparatus according to claim 1, wherein the front end holding means is a suction holding means for sucking and holding the paper sheets. 6. The paper sheet stacking device according to claim 1, wherein the front end holding means is a high-adhesion holding member having high contact resistance with the paper sheet. 7. A depositing / withdrawing apparatus provided with the sheet stacking apparatus according to claim 1, 2, 3, 4, 5 or 6.