JP2003171028A - Taking-out device for paper sheet and control method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a taking-out device for paper sheets, capable of taking out paper sheets at roughly constant intervals without applying burden on a driving system and the paper sheets with a simple structure. <P>SOLUTION: This device comprises a feeding mechanism 20 which aligns the top ends of the paper sheets S, facing forward in the taking-out direction and feeds the paper sheets to a taking-out start position, a taking-out belt 34 which holds the paper sheets S, a taking-out mechanism 30 which makes the taking-out belt 34 hold the paper sheets S and takes them out forward in the taking-out direction at a prescribed taking-out speed when the taking-out belt 34 reaches the taking-out start position, a conveyance mechanism 40 which conveys the paper sheets S taken out by the taking-out mechanism 30, a paper sheet passage detecting device 51 which detects passage of the top end or rear end of the paper sheet S taken out by the taking-out mechanism 30, and a control part 70 which controls the taking-out speed so as to meet prescribed taking-out conditions. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet take-out device and a paper sheet take-out control method for taking out paper sheets such as postal items and forms at substantially constant intervals.

[0002]

2. Description of the Related Art Papers having different lengths are supplied with their ends aligned, and the leaves are taken out one by one, and the distance between the trailing end of the preceding paper and the leading end of the next paper is taken out at regular intervals. In addition, a paper sheet feeder shown in Japanese Patent Laid-Open No. 64-28133,
There is a paper sheet feeder shown in JP-A-10-231035 and a paper sheet feeder shown in JP-A-11-310336.

The paper sheet feeder shown in Japanese Patent Application Laid-Open No. 11-310336 is provided with a take-out belt for adsorbing and conveying the paper sheets one by one, and stopping and driving the take-out belt. Therefore, the interval is corrected.

The paper sheet feeder shown in Japanese Patent Laid-Open No. 64-28133 and the paper sheet feeder shown in Japanese Patent Laid-Open No. 10-231035 both adsorb paper sheets one by one. The take-out belt which is conveyed by the above-mentioned method and the pickup roller which is the interval correcting means are provided, the take-out belt is stopped, driven and intermittently driven, and the interval correcting means is accelerated and decelerated to correct the interval.

Further, in any of the above-mentioned feeding devices, the take-out belt as the take-out means does not have a predetermined take-out start position, and when the take-out belt is in contact with the take-out belt, the adsorbing force is always applied to the take-out belt. Is occurring.

[0006]

The above-mentioned method for taking out paper sheets has the following problems. That is, in the method of intermittently driving the take-out means, since stop and drive are repeated, the speed difference is large and a load is applied to the drive system and the paper sheets. Further, the method of correcting the interval only by intermittently driving the take-out means cannot correct the variation when the leading ends on the supply side are not aligned.

On the other hand, in the method in which the gap correcting means is provided separately from the take-out means, the gap can be corrected even when the leading ends on the supply side are not aligned, but the drive mechanism for the gap correcting means is provided separately from the take-out means. Need to be provided, which leads to an increase in the size of the device and an increase in the number of parts. Further, since the paper sheets that are in contact with the take-out belt are always adsorbed, a large load is applied to the paper sheets when they are delivered to the conveying means.

Therefore, the present invention provides a paper sheet take-out device and a paper sheet take-out control method capable of taking out paper sheets at substantially constant intervals without burdening the drive system and the paper sheets with a simple structure. It is intended to be provided.

[0009]

In order to solve the above problems and achieve the object, the paper sheet take-out device and the paper sheet take-out control method of the present invention are configured as follows.

(1) It has a supply means for aligning the front ends of the paper sheets in the front in the extraction direction and supplying them to the extraction start position, and an extraction portion for holding and extracting the paper sheets. When the arriving position reaches the unloading start position, while holding the paper sheets in the unloading section, and unloading means for unloading the paper sheet forward in the unloading direction at a predetermined unloading speed, A conveying means for conveying the paper sheets taken out by the take-out means, an end passage detecting means for detecting passage of the front end or the rear end of the paper sheets taken out by the take-out means, and a predetermined And a control means for intermittently accelerating and decelerating the take-out speed of the take-out means so as to satisfy the take-out condition, and controlling the take-out means so that the take-out speed becomes a predetermined low speed during deceleration. Prescribed take The conditions are the first condition that the interval between the leading edge of the next paper sheet to be taken out next and the trailing edge of the preceding paper sheet is a predetermined take-out interval, and the trailing edge of the preceding paper sheet is the edge passage detection means. The second condition that the take-out section reaches the take-out start position before being detected by the above, and when the paper sheets taken out by the take-out section reach the conveying means, The third condition that the speed difference between the speed and the transfer speed of the transfer unit is equal to or lower than a predetermined speed is satisfied.

(1-1) The paper sheet take-out device described in (1) above, wherein the paper sheet is placed between the take-out means and the end passage detection means, and the paper-like pieces are taken out by the take-out means. It is characterized by comprising a separating means for preventing two or more leaves from being taken out at the same time.

(2) In the paper sheet take-out device described in (1) above, the take-out means includes a take-out portion position detecting means for detecting the take-out portion position of the take-out portion, and the control means. Comprises a first correction means for correcting the take-out speed on the basis of the take-out portion position obtained by the take-out portion position detecting means and the edge passage detection result of the paper sheet taken out in advance. Characterize.

(3) In the paper sheet take-out device described in (1) or (2) above, the control means causes the end-passage detection means to detect the paper based on the detection result of the take-out portion position. The difference between the estimation means for estimating the estimated arrival time at which the tip of the leaf arrives and the actual arrival time at which the edge passage detection means actually detected the passage of the tip of the paper sheet and the estimated arrival time Based on the above, a second correction means for correcting the take-out speed is provided.

(4) The paper sheet take-out device described in (1) to (3) above, wherein the take-out means causes the take-out section to generate an adsorbing force to hold the paper sheet. It is characterized in that it is provided with a force generating means, and the suction force generating means makes the suction force to the paper sheets held by the conveying means in the take-out process smaller than the holding force by the conveying means.

(5) The paper sheet take-out device described in (1) to (4) above, which is located between the take-out means and the conveying means and detects the thickness of the taken-out paper sheets. The control means suppresses a delay in delivery of the paper sheet to the conveying means, which occurs when the paper sheet having a predetermined thickness or more is taken out, based on the thickness detection result. Thus, the third correction means for correcting the extraction speed is provided.

(6) A supply process in which the front ends of the paper sheets are aligned in the front in the extraction direction and is supplied to the extraction start position, and the extraction section that holds and extracts the paper sheets reaches the extraction start position. When, while holding the paper sheet in the take-out portion, a take-out step of taking out the paper sheet forward in the take-out direction at a predetermined take-out speed, and a conveying step of conveying the paper sheet taken out by the take-out step, An end passage detection process for detecting the passage of the front end or the rear end of the paper sheets taken out by the taking-out process, and so as to satisfy a predetermined taking-out condition, the acceleration and deceleration of the taking-out speed are performed intermittently, And a control step for controlling the take-out of the paper sheets so that the take-out speed becomes a predetermined low speed at the time of deceleration, and the predetermined take-out condition is that the leading edge of the next paper sheet to be taken out and the preceding paper sheet. The distance at the rear end is A first condition for a constant take-out interval, and a second condition for the take-out section to reach the take-out start position before the trailing edge of the preceding paper sheet is detected by the edge passage detection process, The third condition that the speed difference between the speed of the paper sheet taken out by the take-out section and the speed of the paper sheet conveyed in the conveying process is equal to or lower than a predetermined speed is satisfied. To do.

[0017]

1 is a view showing a paper sheet take-out device 10 according to a first embodiment of the present invention, in which (a) is a top view and (b) is a line AA. It is the side view seen from the position. FIG. 2 shows a control unit 7 incorporated in the paper sheet take-out device 10.
0 is a block diagram showing 0, FIG. 3 is a diagram showing an example of the drive pattern data stored in the drive pattern data unit 72 of the control unit 70, and FIG. 4 is an explanation showing the flow of the paper sheet takeout by the paper sheet takeout device 10. FIGS. 5 to 7 show a paper sheet take-out device 10
It is explanatory drawing which shows the process of paper sheet taking out by. Note that S (S1, S2, S3, ...) In these drawings indicates paper sheets such as postal items and forms.

As shown in FIGS. 1 (a) and 1 (b), the paper sheet take-out device 10 includes a supply mechanism 20 for supplying the front ends (the right ends in FIG. 1) of the paper sheets S in a uniform manner, and the paper. A take-out mechanism 30 that takes out the leaves S one by one, a conveyance mechanism 40 that receives and conveys the taken-out paper sheets S, and a paper sheet passage that detects passage of the front and rear ends of the paper sheets S that are being taken out Detector 5
0, a multi-feed preventing mechanism 60 as a multi-feed preventing unit, and a control unit 70 that controls these units in cooperation with each other.

The supply mechanism 20 will be described later with reference to a supply table 21 on which a plurality of paper sheets S are placed, and the paper sheets S placed on the supply table 21 along the arrow α direction in FIG. Take-out belt 3
It is provided with a supply belt 22 and a supply pin 23 that are provided so as to be fed to the 4 side, and a leading edge alignment guide plate 24 that aligns the leading edges of the paper sheets S. The paper sheet S is supplied to the take-out mechanism 30 by the supply mechanism 20 in a state where the leading ends thereof are substantially aligned.

The take-out mechanism 30 comprises a drive roller 31 which is rotationally driven in the direction of arrow R in the figure, and two pinch rollers 32 and 3.
3 and an endless take-out belt 34 wound around the rollers 31 to 33. The take-out belt 34 is
It is driven by the drive roller 31 along the arrow β direction in FIG. 1, and particularly between the pinch roller 33 and the drive roller 31 in the direction orthogonal to the arrow α direction (arrow γ).

In the take-out belt 34, one set of three belt holes 34a, at a constant pitch interval along the running direction,
Three sets of 34b are provided. The take-out belt 34 is configured to convey the paper sheets S that are in contact with the take-out belt 34 toward the conveyer belts 43 and 44 of the conveyer mechanism 40. The take-out belt 34 can be accelerated and decelerated at a predetermined speed by the drive roller 31.

Inside the take-out belt 34, a suction chamber 35, which is in contact with the take-out belt 34 and is sucked by a suction device (not shown), is provided at a position facing the paper sheet S. In addition, the suction chamber 35 includes a take-out belt 34.
Is attached to the chamber mask 36 that slides in an airtight manner. The chamber mask 36 is provided with several suction mask holes 36a and 36b, and the total area of the mask holes 36a is larger than the total area of the mask holes 36b. When these mask holes 36a, 36b and the belt holes 34a, 34b provided in the take-out belt 34 overlap,
The paper sheet S that is attracted by the suction force and is in contact with the take-out belt 34
Are attracted to the take-out belt 34.

Now, the positional relationship between the belt holes 34a and 34b and the mask hole 36a will be described. Mask hole 36
A suction force is generated when the belt holes 34a and 34b start to be applied to a, and the paper sheet S starts to be taken out. Immediately after being taken out, the paper sheet S is accelerated and the reverse feed roller 61 is used.
As a result, a load is applied in the direction opposite to the take-out direction, so a large frictional force is required. Therefore, the belt holes 34a, 34
It is arranged so that b and the mask hole 36a largely overlap.

When the leading edges of the paper sheets S are not completely aligned, the first paper sheet S1 to be taken out first
In order to prevent the paper sheets S2 therebelow from being adsorbed by the take-out belt 34, the mask hole 36a is provided behind the guide plate 24 with the front end aligned by a certain distance or more behind the take-out direction.

Further, the paper sheets S are sent out, and the paper sheets S are
When the front end of the roller hits the pull-out rollers 41, 42 described later, the speed difference causes the take-out belt 34 and the pull-out roller 4 to move.
1, 42 and the paper sheet S are inquired. Therefore, in order to be smoothly pulled out, the take-out belt 34 and the paper sheet S
It is necessary to reduce the frictional force between and. Therefore, in order to reduce the force of sucking the paper sheets S, the belt holes 34a,
In order to reduce the overlapping area of 34b and the mask hole 36b and to surely feed the paper sheet S to the pull-out rollers 41 and 42, the arrangement is made so that the overlapping area does not become zero.
Considering the size, the belt holes 34a and 34b and the mask hole 36b are provided.

A transmission type take-out belt hole detector 37 is provided between the pinch rollers 32 and 33. By detecting the belt hole 34a with the take-out belt hole detector 37, the preceding belt hole 34a of the take-out belt 34, that is, the take-out position is detected. The extraction belt hole detector 37 is turned on when the light from the light emitting element 37a is guided to the light receiving element 37b through the belt hole 34a. Further, regarding the positional relationship among the take-out belt hole detector 37, the belt hole 34a, and the mask hole 36a, as shown in FIG.
The take-out belt hole detector 37 is arranged so as to detect the belt hole 34a of another set at a position where the belt hole 34a starts to be caught.

The transport mechanism 40 is provided with two upper and lower meshing pull-out rollers 41 and 42, and upper and lower transport belts 43 and 44 which are engaged with the pull-out rollers 41 and 42. The lower pulling roller 42 passively moves up and down according to the thickness of the paper sheet S, and it is possible to send the paper sheet S of various thicknesses to the transport belts 43 and 44. The conveyor belts 43 and 44 are driven at a constant speed (for example, 3.3 m /
s).

The paper sheet passage detector 50 is provided with a transmissive paper sheet passage detector 51 between a reverse feed roller 61 and pull-out rollers 41 and 42 which will be described later. Paper sheet passage detector 51
Includes a light emitting element 51a and a light receiving element 51b, and has a function of detecting passage of the front end and the rear end of the paper sheet S taken out by the takeout belt 34. That is, the paper sheet S
The state of light reaching from the light emitting element 51a to the light receiving element 51b (ON) changes from the state of being shielded (OFF) to detect the leading edge of the paper sheet S, and the paper sheet S changes from the light emitting element 51a. By changing the state in which the light guided to the light receiving element 51b is blocked (OFF) from the state in which the paper sheet S passes and the light from the light emitting element 51a reaches the light receiving element 51b (ON), the rear end is changed. To detect.

The double feed prevention mechanism 60 includes a reverse feed roller 61,
It has a separating claw 62. The reverse running roller 61 rotates in the direction opposite to the running direction of the take-out belt 34, and the reverse sending roller 6
The 1 and the separating claw 62 prevent the second and subsequent sheets S from being taken out and conveyed.

The control unit 70 calculates the difference in detection time according to the paper sheet trailing edge detection signal from the paper sheet passage detector 51 and the take-out belt take-out position detection signal from the take-out belt hole detector 37. , A driving pattern data unit 72 to be described later for calling the driving pattern of the take-out belt 34, and a calculation processing unit 71 for outputting a target speed corresponding to the driving pattern to a driving device control unit 73 to be described later, and taking-out previously calculated. A drive pattern data section 72 for accumulating various drive patterns of the belt 34 and a drive device control section 73 for controlling the drive roller 31 according to the target speed input from the arithmetic processing section 71 are provided.

Further, the arithmetic processing section 71 estimates from the take-out belt take-out position detection signal from the take-out belt hole detector 37 the time when the leading edge of the paper sheet S being taken out passes the paper sheet passage detector 51. A function of calculating the delay or advance of the paper sheet S from the difference between the estimated time and the actual detection time of the paper sheet leading edge detection signal of the paper sheet passage detector 51, and correcting the drive pattern data is also provided.

Next, a method of calculating the take-out belt drive pattern data of the drive pattern data section 72 will be described.
The speed function of the take-out belt 34 is V (t), the conveyor belt 4
The speeds of 3 and 44 are Vc, the pitch intervals of the three belt holes 34a in the take-out belt 34, that is, the distance from the tip of one belt hole 34a to the tip of the next belt hole 34a is Bp, and the tips are aligned. The distance from the guide plate 24 to the paper sheet passage detector 51 is XS, the distance from the guide plate 24 with the leading edge aligned to the pull-out rollers 41 and 42 is Xd, the length of the shortest paper sheet to be handled is Lmin, and it is taken out first. The gap G between the rear end of the paper sheet S and the front end of the paper sheet S taken out next (the space between the paper sheets) is set.

Further, when the takeout is started, that is, the time when the takeout belt hole detector 37 detects the belt hole 34a is set to 0, the trailing end of the paper sheet S1 taken out first is the paper sheet passage detector 51. Ts1, the time when the leading edge of the paper sheet S2 being taken out reaches the pull-out rollers 41, 42, and Td, and the rear edge of the paper sheet S2 being taken out reaches the paper sheet passing detector 51. The time is set to Ts2.

Between Ts1 and Td, a gap G between the sheet S taken out first and the sheet S taken out next is generated, and the gap G is

[Equation 1] Indicated by. In addition, the leading edge of the paper sheet S is at a predetermined position, that is, the position of the leading edge alignment guide plate 24, and the take-out belt 3
Assuming you move at the same speed as 4,

[Equation 2] Becomes Further, the belt hole 34a of the take-out belt 34 starts at the next take-out start position, that is, the front end of the belt hole 34a and the rear end of the mask hole 36a start to overlap before the rear end of the paper sheet S1 taken out first is detected. The position must be the position, and the condition is that, when the paper sheet S being taken out is the shortest, when the trailing edge of the paper sheet S reaches the paper sheet passage detector 51, at Ts2, the take-out belt 34 Since the belt hole 34a reaches the extraction start position,

[Equation 3] Becomes Satisfying the above four expressions (1) to (4) is a necessary condition for the speed function V (t).

Further, as much as possible, the paper sheet S is prevented from slipping and the like, and the take-out belt 34 and the transport belts 43 and 44 are used.
Need to move at the same speed as. Therefore, the following is taken into consideration when creating the drive pattern data of the take-out belt speed.

At the start of taking out (t = 0), the stopped sheet S is taken out to drive at a low speed V0. This is because the load due to the static friction of the take-out belt drive system is applied at the time of the next movement when it is completely stopped. When the tip of the paper sheet S reaches the pull-out rollers 41 and 42 (t = Td)
In this case, the speed is close to the conveyor belt speed Vc. However, it does not exceed the conveyor belt speed Vc. Furthermore, the take-out belt 34
In order to accelerate and decelerate reasonably, the speed change should be kept below a certain level.

An example of a velocity diagram in consideration of the above is shown in FIGS. 3 (a) and 3 (b). Note that FIG. 3A shows a case where the length of the paper sheet S is short, and FIG. 3B shows a case where the length of the paper sheet S is long. Even considering the above, due to the difference in weight, thickness, material, etc. of the paper sheets S and the case where the leading ends of the paper sheets S are not completely aligned, the paper sheets are The position of S may vary. Therefore, the drive pattern of the take-out belt 34 is corrected by using the leading edge detection time of the paper sheet passage detector 51, and its variation is corrected.

Next, the paper sheet take-out operation in the take-out device will be described with reference to the flow chart shown in FIG. First, the supply belt 22 and the supply pin 23 of the supply mechanism 20 and the suction device of the suction chamber 35 are driven (ST
1) and drives the take-out belt 34 at a constant low speed V0 (S
T2). As a result, the paper sheets S set on the supply table 21 with their ends aligned are sent to the take-out belt 34 by the supply belt 22 and the supply pin 23.

When the sheet S reaches the take-out belt 34 and the tip of the belt hole 34a of the take-out belt 34 reaches the take-out start position (the rear end of the mask hole 36a), the take-out belt hole detector 3
Belt holes 34a and 34b are detected by 7 (ST
3). At this time, as shown in FIG. 5A, a suction force is generated on the first sheet S1 that is closest to the take-out belt 34, is attracted to the take-out belt 34, and is sent to the conveyor belts 43, 44 side. Start to be performed (ST4).

The second and subsequent sheets are prevented from being taken out by the reverse feeding roller 61 and the separating claw 62. 1
The sheet S of the sheet is adsorbed to the take-out belt 34,
Since the friction with the take-out belt 34 is larger than the friction with the reverse feed roller 61, it is fed as it is.

The leading edge of the first paper sheet S1 sent out is detected by the paper sheet passage detector 51 (ST5), and as shown in FIG. The tip ends of the pulling rollers 41 and 42. At that time, although the rear end of the paper sheet S is still hooked on the take-out belt 34,
The attraction force is weakened due to the positional relationship between 34b and the mask hole 36b. Therefore, the frictional force with the pull-out rollers 41, 42 becomes larger than the frictional force with the take-out belt 34,
The sheet S1 is pulled out and conveyed by the conveyor belts 43 and 44. Then, as shown in FIG. 6A, the rear end of the first sheet S1 is detected (ST8).

On the other hand, the take-out position of the take-out belt 34 reaches the take-out start position again, that is, the belt hole detector 37 detects the belt hole 34a (ST6), and the second paper sheet S2 is sucked. A force is generated, the sheet S2 is adsorbed to the take-out belt 34, and the second sheet S2 starts to be taken out (ST7).

At this time, the extraction start detection time of the extraction belt hole detector 37 and the trailing edge detection time of the first sheet S1 by the sheet passage detector 51 are compared, and the above-mentioned arithmetic processing unit is executed. The drive pattern data (see FIG. 3) of the take-out belt 34 in the drive pattern data section 72 is selected based on the calculation result of 71 (ST9), and the take-out belt 34 is driven according to the selected drive pattern (ST10).

The second sheet S2 is accelerated in accordance with the speed of the take-out belt 34 and approaches the conveyor belt speed Vc. Meanwhile, as shown in FIG. 6B, the paper sheet passage detector 5
1 detects the leading edge of the second sheet S2 (ST
11). Here, compare with the estimated detection time (S
T12), the previously calculated drive pattern of the take-out belt 34 is corrected (ST13), and the take-out belt 34 is driven (ST14).

The speed of the take-out belt 34 is the highest in the conveyor belt V.
When approaching the c speed, as shown in FIG.
The leading edge of the paper sheet S is caught by the pull-out rollers 41 and 42, and the paper sheet S2 is pulled out and conveyed by the conveyor belts 43 and 44. At this time, the paper sheet S2, like the paper sheet S1, has a weaker suction force from the take-out belt 34.
The frictional force with the pull-out rollers 41, 42 is more than that of the take-out belt 3.
It will exceed the frictional force with 4.

As shown in FIG. 7B, after the leading edge of the paper sheet S2 is pulled out by the pull-out rollers 41, 42, the take-out belt 34 is decelerated until the next paper-sheet S3 is taken out. Becomes a constant low speed V0. Below, the third and subsequent sheets S
3, S4, ... Are processed in the same manner as the second sheet.

As described above, according to the paper sheet take-out device 10 of the first embodiment, the leading ends of the paper sheets S are aligned and supplied, and the paper sheets S are fed one by one at regular intervals. In the take-out mechanism, by realizing a part for separating the paper sheets S and a part for correcting the distance between the paper sheets S in one mechanism, it is possible to save space and reduce the number of parts.

Further, since it is possible to take out with little variation, it is possible to stabilize the mechanical performance, and one detector can detect the leading edge of the sheet for detecting the interval and the sheet for measuring the length of the sheet. It is possible to use a single detector by also performing rear end detection.

Further, since it is not necessary to stop the drive roller 31 completely, the load on the drive mechanism is reduced and the life of the machine can be extended,
The burden on the paper sheets can be reduced.

Further, in accordance with the detection result of the trailing edge of the taken-out sheet S, the next sheet-to-be-taken is defined as the take-out interval in which the interval between the leading edge of the sheet and the trailing edge of the preceding sheet S is fixed. Is controlled so that the trailing edge of the preceding paper sheet is detected by the paper sheet passage detector 51 in accordance with the shortest length of the paper sheet S to be handled.
A is driven so as to reach the take-out start position, and the speed difference of the next paper sheet S is reduced when the next paper sheet S is delivered from the take-out belt holes 34a and 34b to the transport mechanism 40. The take-out belt 34 can be controlled to be driven by acceleration / deceleration instead of intermittent driving of driving / stopping, and at a constant low speed during deceleration.

Further, from the detection result of the take-out position, the paper sheet passage detector 51 estimates the time when the leading edge of the paper sheet S in the taking-out process arrives, and the paper sheet passage detector 51 detects the leading edge of the paper sheet. The position of the paper sheet S being taken out is corrected by controlling the speed of the take-out belt 34 based on the difference between the result of detection of the passage and the estimation, and therefore the leading edge of the paper sheet S starts to be taken out. Even when the sheets are not completely aligned, it is possible to correct the take-out intervals of the paper sheets S to be constant.

FIG. 8 is a diagram showing a main part of a paper sheet take-out device 100 according to the second embodiment of the present invention. In the paper sheet take-out device 100, instead of the transport mechanism 40, the transport mechanism 10
1 is used. In the transport mechanism 101, a pull-out section 102 and a transport section 103 are provided independently. Extraction part 102
Includes drawing rollers 102a and 102b arranged at a position overlapping the chamber mask 36. Further, the transport unit 103 is provided with transport rollers 103a and 103b, transport belts 103c and 103d, and a synchronization belt 103e that synchronizes the transport roller 103b and the pull-out roller 102b. Along with this, the extraction belt holes 34 a and 34 b of the extraction belt 34 and the mask hole 3 of the chamber mask 36.
The arrangement and size of 6a and 36b are set.

Also in the paper sheet take-out apparatus 100 according to the second embodiment, the same effect as that of the paper sheet take-out apparatus 10 described above can be obtained.

FIG. 9 is a view showing a main part of a paper sheet take-out device 110 according to the third embodiment of the present invention. 9, the same functional parts as those in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted.

In the paper sheet take-out device 110, the transport mechanism 40
The transport mechanism 111 is used instead of the. Transport mechanism 11
1, the pull-out section 112 and the transport section 113 are provided independently. The pull-out section 112 includes pull-out rollers 112a, 11
2b is provided. Further, the transport unit 113 is provided with transport rollers 113a and 113b, a pinch roller 113c, and transport belts 113d and 113e.

Also in the paper sheet take-out apparatus 110 according to the third embodiment, the same effect as that of the paper sheet take-out apparatus 10 described above can be obtained.

FIG. 10 is a view showing a main part of a paper sheet take-out device 120 according to the fourth embodiment of the present invention. In FIG. 10, the same functional portions as those in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted. In the paper sheet take-out device 120, a double feed prevention mechanism 121 is used instead of the double feed prevention mechanism 60. The double feeding prevention mechanism 121 uses the friction member 122 instead of the reverse feeding roller 61.

Also in the paper sheet take-out apparatus 120 according to the fourth embodiment, the same effect as that of the paper sheet take-out apparatus 10 described above can be obtained.

FIG. 11 is a diagram showing a main part of a paper sheet take-out device 130 according to the fifth embodiment of the present invention. Further, FIG. 12 is a block diagram showing a control unit 131 incorporated in the paper sheet takeout device 130 according to the fifth embodiment of the present invention. 11, the same functional parts as those in FIG. 1 are designated by the same reference numerals, and the same functional parts as those in FIG. 2 are designated by the same reference numerals in FIG. 12, and detailed description thereof will be omitted. In the paper sheet take-out device 130, the double feed prevention mechanism 60 and the pull-out rollers 41, 42
A sheet thickness detector 132 using, for example, a reflection type photoelectric sensor is provided between them. The paper sheet thickness detector 132 is
The thickness information is obtained by detecting the distance to the surface of the taken out paper sheet. In addition to the processing of the arithmetic processing unit 71, the arithmetic processing unit 133 also has a function of calculating the delay until being delivered to the conveying means based on the measurement data in advance based on the obtained thickness information and correcting the drive pattern. .

Also in the paper sheet take-out device 130 according to the fifth embodiment, the same effect as that of the paper sheet take-out device 10 described above can be obtained, and the paper feed speed is determined based on the thickness information. Since it can be controlled, highly accurate control can be performed.

FIG. 13 is a diagram showing a main part of a paper sheet take-out device 140 according to the sixth embodiment of the present invention. 13, the same functional parts as those in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted. In the paper sheet take-out device 140, the fifth
Instead of the paper sheet thickness detector 132 of the embodiment, the paper sheet thickness detector 141 is used. The paper sheet thickness detector 141 obtains thickness information by measuring the amount of movement of the paper sheet taken out by the reverse feed roller 61 when passing. The process after detection is the same as that of the fifth embodiment.

Also in the paper sheet take-out apparatus 140 according to the sixth embodiment, the same effect as that of the paper sheet take-out apparatus 130 described above can be obtained.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

[0064]

According to the present invention, it is possible to take out the paper sheets at a substantially constant interval with a simple structure without burdening the drive system and the paper sheets.

[Brief description of drawings]

FIG. 1 is a diagram showing a paper sheet takeout device according to a first embodiment of the present invention, in which (a) is a plan view and (b) is (a).
The side view seen in the arrow direction in the position of the AA line in FIG.

FIG. 2 is a block diagram showing a configuration of a control unit incorporated in the paper sheet take-out device.

FIG. 3 is an explanatory diagram showing a change in speed of the take-out belt in the control unit.

FIG. 4 is an explanatory view showing a flow of a paper sheet take-out operation by the paper sheet take-out device.

FIG. 5 is an explanatory view showing a paper sheet take-out process by the paper sheet take-out device.

FIG. 6 is an explanatory view showing a paper sheet take-out process by the paper sheet take-out device.

FIG. 7 is an explanatory view showing a paper sheet take-out process by the paper sheet take-out device.

8A and 8B are views showing a paper sheet take-out device according to a second embodiment of the present invention, in which FIG. 8A is a plan view and FIG. 8B is a direction of an arrow at the position of line BB in FIG. 8A. The side view seen in. .

FIG. 9 is a plan view showing a paper sheet takeout device according to a third embodiment of the present invention.

FIG. 10 is a plan view showing a paper sheet takeout device according to a fourth embodiment of the present invention.

FIG. 11 is a plan view showing a paper sheet takeout device according to a fifth embodiment of the present invention.

FIG. 12 is a block diagram showing a configuration of a control unit incorporated in the paper sheet take-out device.

FIG. 13 is a plan view showing a paper sheet takeout device according to a sixth embodiment of the present invention.

[Explanation of symbols]

10, 100, 110, 120 ... Paper sheet take-out device 20 ... Supply mechanism 30 ... Extraction mechanism 40 ... Transport mechanism 50 ... Paper passage detection unit 60 ... Double feed prevention mechanism 70 ... Control unit 71 ... Arithmetic processing unit 72 ... Drive pattern data section 73 ... Drive device control unit

Continued front page    (72) Inventor Kazuya Nishiaki             70 Yanagicho, Saiwai-ku, Kawasaki City, Kanagawa Prefecture             Toshiba Yanagimachi Office F-term (reference) 3F343 FA15 FA16 FA17 FB11 GA01                       GB01 GC01 GD01 HB07 HD09                       HD16 JB05 JB19 KB05 KB20                       MA03 MA14 MA36 MB03 MB09                       MB13 MC06 MC23

Claims (6)

[Claims] 1. A supply means for aligning the front ends of the paper sheets in a state in which they are directed to the front in the extraction direction and supplying them to a take-out start position, and a take-out portion for holding and taking out the paper sheets. When it reaches the take-out start position, it holds the paper sheets in the take-out section and takes out the paper in the take-out direction forward at a predetermined take-out speed, and the take-out means is located forward of the take-out direction with respect to the take-out means. A conveying means for conveying the paper sheets taken out by the take-out means, an end passage detecting means for detecting passage of a front end or a rear end of the paper sheets taken out by the take-out means, and a predetermined take-out operation And a control means for intermittently accelerating and decelerating the take-out speed of the take-out means so as to satisfy the condition, and controlling the take-out means so that the take-out speed becomes a predetermined low speed during deceleration. Take out Matter, the spacing of the trailing end of the sheet and the preceding leading end of the paper sheet taken out next is the predetermined take-out interval 1
And the second condition that the take-out section reaches the take-out start position before the trailing edge of the preceding paper sheet is detected by the end-passage detection unit, and the paper taken out by the take-out section. A third difference in speed difference between the speed of the taken-out paper sheet and the speed of transportation of the transportation means being a predetermined speed or less when the leaves reach the transportation means.
A paper sheet take-out device characterized in that all of the conditions and are met. 2. The take-out means comprises a take-out portion position detecting means for detecting the take-out portion position of the take-out portion, and the control means precedes the take-out portion position obtained by the take-out portion position detecting means. The paper sheet take-out device according to claim 1, further comprising a first correction unit that corrects the take-out speed based on a result of detection of the passage of the end portion of the paper sheet taken out as described above. 3. The estimating means for estimating an estimated arrival time at which the leading edge of a sheet arrives at the edge passage detecting means based on the detection result of the take-out portion position, and actually the edge portion. A second correction means for correcting the take-out speed based on the difference between the actual arrival time at which the passage detection means detects the passage of the leading edge of the paper sheet and the estimated arrival time. The paper sheet takeout device according to claim 1 or 2. 4. The pickup means comprises suction force generation means for generating suction force in the pickup portion to hold the paper sheets, and the suction force generation means is the pickup held by the conveying means. The paper sheet take-out device according to any one of claims 1 to 3, wherein the attraction force to the paper sheet in the process is made smaller than the holding force by the conveying means. 5. A thickness detecting means is provided between the take-out means and the carrying means for detecting the thickness of the taken-out paper sheets, and the control means determines a predetermined value based on the thickness detection result. And a third correction unit that corrects the take-out speed so as to suppress a delay in delivery of the paper sheet to the conveying unit that occurs when taking out a paper sheet having a thickness equal to or larger than the thickness. Item 5. The paper sheet takeout device according to any one of Items 1 to 4. 6. A supply process in which the front ends of the paper sheets are aligned in the state of facing the front in the extraction direction and is supplied to the extraction start position, and an extraction section that holds and extracts the paper sheets reaches the extraction start position. At the time, while holding the paper sheets in the take-out section, a take-out step of taking out the paper sheets forward by the take-out direction at a predetermined take-out speed, and a conveying step of conveying the paper sheets taken out by the take-out step, An edge passage detection process that detects the passage of the leading edge or the trailing edge of the paper sheet taken out during the take-out process, and intermittently accelerates and decelerates the take-out speed so that a predetermined take-out condition is satisfied, and then decelerates. Sometimes a control process for controlling the take-out of the paper sheets so that the take-out speed becomes a predetermined low speed, and the predetermined take-out condition is that the leading edge of the next paper sheet to be taken out and the preceding paper sheet There is a space at the rear end The first to be of the take-out interval
And the second condition that the take-out section reaches the take-out start position before the trailing edge of the preceding paper sheet is detected by the edge passage detection process, and the paper taken out by the take-out section. A sheet take-out control method, wherein all of a third condition that the speed difference between the speed of the leaves and the paper sheet conveyed in the conveying step is equal to or less than a predetermined speed are satisfied.