JP2626517B2 - Paper transport controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet transport control device for classifying mails and the like, and more particularly to a paper sheet transport control for handling paper sheets wrapped in a transparent material such as a transparent plastic bag. Related to the device.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional sheet transport control device of this type. The conveyance control device includes a photoelectric sensor 105 that detects a sheet 120 conveyed on a conveyance path 103 provided with a branch path 103a;
An instruction circuit 111 for instructing whether or not the circuit 20 is to be branched to the branch path 103a; a photoelectric sensor 105 and an instruction circuit 11;
And a switch driving circuit 112 for outputting a drive signal to the switch 104 for opening and closing the branch path 103a based on the output from the switch 1.

When a sheet 120 is conveyed on the conveying path 103 and the leading end passes through the photoelectric sensor 105, a light-shielding signal is output from the photoelectric sensor 105 to the switch driving circuit 112. If the instruction circuit 111 indicates that the sheet 120 is to be branched, the sheet 1
20 is detected by the photoelectric sensor 105 and then the branch 1
After a time corresponding to the time required to reach 03a, the switch drive circuit 112 outputs a drive signal to the switch 104.
As a result, the switch 104 is driven to open the fork 103a for a predetermined time, and the sheet 120 is moved to the fork 103a.
And is conveyed. On the other hand, when the paper sheet 120 is not to be branched, the switch driving circuit 11
No. 2 does not output a drive signal to the switch 104, and the paper sheet 120 is conveyed on the conveyance path 103 as it is.

[0004]

However, in recent years,
The number of paper sheets wrapped in a transparent material such as a transparent plastic bag is increasing, and this transparent material cannot be detected by a photoelectric sensor. Therefore, the transparent material 20b as shown in FIG.
Even if the paper sheet 20 wrapped in the paper is transported, the switch is driven by the detection of the paper sheet main body 20a, which is an opaque member inside the transparent material 20b. In such a case, there is a problem that the sheet 20 may not be branched due to a delay in opening the branch path.

Accordingly, an object of the present invention is to provide a paper sheet transport control device which can reliably branch and transport a paper sheet even when the paper sheet wrapped in a transparent material is transported. And

[0006]

In order to achieve the above-mentioned object, a paper sheet transport control device according to the present invention is provided with a branch path which is opened and closed by a switch, and wherein an opaque member is wrapped in a transparent member. a conveying path which the paper sheets to be from the class and opaque member is conveyed, a first detector capable of detecting the transparent member of the paper sheets to be conveyed the conveying path, paper conveyed through the conveying path A second detector for detecting a kind of opaque member, a downstream side of the first detector and the second detector with respect to a moving direction of the paper sheet in the transport path, and the branch path. A third detector provided on the upstream side to detect an opaque member of the paper sheet conveyed on the conveyance path, and an instruction circuit for indicating whether or not the paper sheet is branched to the branch path. When indicates that the paper sheet should be branched, the paper sheet, Serial obtain correction distance is the distance from the tip of the detected transparent member to the tip of an opaque member detected by the second detector by a first detector, the paper sheet is, the third detection From the time when the paper sheets are detected by the container, when the distance from the third detector to the branch road is shorter than the predetermined distance by the correction distance, the switch device And control means for driving.

[0007] Further, the second detector is provided on the transport path .
And the transport path has a plurality of branch paths corresponding to the direction of movement of the paper sheets in the first detector, and the switch and the second switch correspond to the plurality of branch paths. 3
May also be provided in plurality.

[0008] Further, the control means includes a pulse generator for generating a number of pulses corresponding to the amount of movement of the paper sheet in the transport path, and detecting the pulses from the first detector and the second detector. Only when the signal is input and the sheet is detected by one of the detectors until the sheet is detected by the other detector, a pulse output from the pulse generator is output. a counting circuit for counting the number of a register for storing the number of pulses counted by the counting circuit, the rolling upon to switch with driving the front <br/> Symbol number of pulses stored in the register, and the conveying path Calculating the correction distance based on the distance between the first detector and the second detector in the moving direction of the paper sheet in the above. When the detection signal is input from the third detector, the predetermined distance is determined. From the distance A correction circuit that outputs a drive signal to the switch when the paper sheet on the transport path moves by a distance obtained by subtracting the regular distance, and in this case, the transport path includes a plurality of branches. A road may be provided, and a plurality of the switch, the third detector, and the correction circuit may be provided correspondingly.

The first detector may use an ultrasonic sensor, and the second detector and the third detector may each use a photoelectric sensor.

[0010]

In the paper sheet transport control device of the present invention configured as described above, the paper sheet wrapped in the transparent material is transported on the transport path, and the paper sheet is to be branched by the instruction circuit. When instructed, the transparent member of the paper sheet, that is, the transparent material is detected by the first detector, and the opaque member of the paper sheet is detected by the second detector. The first detector and the second detector are in the transport direction of the sheet (in the transport path) .
( The moving direction of the paper sheet in the moving direction), the control means controls the time from the detection by one detector to the detection by the other detector, and the transport of the paper sheet.
From the distance between the first detector and the second detector in the sending direction ,
A correction distance, which is the distance from the tip of the transparent member of the paper sheet to the tip of the opaque member, is obtained. When the sheet is further conveyed and detected by the third detector, the sheet is conveyed a distance shorter than the predetermined distance that is a distance from the third detector to the branch road by the correction distance. At this point, the switch is driven. Thus, the switch is driven when the leading end of the transparent member of the paper sheet reaches the branch path, so that the paper sheet wrapped in the transparent material is surely branched to the branch path.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram of a first embodiment of a paper sheet transport control device according to the present invention. As shown in FIG. 1, the transport path 3 that transports the paper sheets 20 from right to left in the figure has a branch path 3 a that is opened by driving the switch 4. A first detector 5 that can detect a transparent material such as a transparent plastic bag and a second detector that detects an opaque member in order to detect the paper sheet 20 conveyed on the conveyance path 3. 6 are provided at the same position with respect to the transport direction of the paper sheet 20. As these arrangements, for example, as shown in FIG. 2, the first detector 5 may be arranged so as to be perpendicular to the transport path 3 on the second detector 6, The reverse is also acceptable. A third detector 7 similar to the second detector 6 is provided downstream of the first detector 5 and the second detector 6 and upstream of the branch path 3a. I have. For example, an ultrasonic sensor is used as the first detector 5, and a photoelectric sensor is used as the second detector 6 and the third detector 7, for example.

The control means for controlling the driving of the switch 4 includes a pulse generator 1 for generating a number of pulses corresponding to the amount of movement of the paper sheet 20 on the transport path 3, and a first detector 5.
The counting circuit 8 counts the pulse signal from the pulse generator 1 from the time when the paper sheet 20 is detected at the time until the paper sheet 20 is detected by the second detector 6. A register 2 for storing the counted pulse number and branch position information specified by the instruction circuit 10 ;
While obtaining a correction distance corresponding to the number of pulses stored in the register 2 on the basis of the output from the register 2, instruction circuit 1
When the input information from 0 is an instruction to branch the paper sheet 20, a predetermined distance from the third detector 7 to the branch path 3 a from the time when the paper sheet 20 is detected by the third detector 7. A correction circuit 9 that outputs a drive signal to the switch 4 when the paper sheet 20 is conveyed a distance shorter than the correction distance. The conveyance distance of the paper sheet 20 is determined by the distance from the pulse generator 1.
Pulse number of the pulse signal.
And the correction distance can be converted by the number of pulses. In the present embodiment,
To give the drive timing of the rut 4, the correction circuit 9
Is also supplied with a pulse signal from the pulse generator 9.

Next, the operation of the paper sheet transport control device of this embodiment will be described.

First, as shown in FIG. 3, a case will be described in which a sheet body 20a, which is an opaque member, is wrapped in a transparent material 20b such as a transparent plastic bag.

When such a paper sheet 20 is conveyed along the conveying path 3, first, the transparent material 20b is detected by the first detector 5. Then, the first detector 5 outputs this detection signal to the count circuit 8, and the count circuit 8 starts counting the pulse signal output from the pulse generator 1. When the paper sheet 20 is further conveyed, the paper sheet main body 20a is detected by the second detector 6 this time, and this detection signal is output to the count circuit 8. When the detection signal from the second detector 6 is input to the count circuit 8, the count circuit 8 stops counting the pulse signal output from the pulse generator 1. Thus, the number of pulses corresponding to the distance L from the leading end of the transparent material 20b to the leading end of the paper sheet main body 20a is counted by the counting circuit 8, and the number of pulses is stored in the register 2.

When the paper sheet 20 is further conveyed, the third detector 7 detects the paper sheet main body 20a, and outputs a detection signal to the correction circuit 9. The correction circuit 9 receives the information from the instruction circuit 10 and, if the paper sheet 20 detected by the third detector 7 is to be branched to the branch path 3a, the paper sheet main body 20a Is detected by the third detector 7, the paper sheet 20 becomes the third
When a predetermined distance, which is the distance from the detector 7 to the branch path 3a, is conveyed, a drive signal is output to the switch 4 to branch the paper sheet 20 to the branch path 3a.
The output timing of the drive signal to the switch 4 is corrected by the input from the register 2. That is, based on the number stored in the register 2 pulses, the drive to the corresponding number of pulses calculated correction distance, the predetermined distance by a distance obtained by subtracting the corrected distance from the sheet 20 switch with 4 When conveyed Output a signal. Since the correction distance corresponding to the number of pulses stored in the register 2 is the distance L shown in FIG. 3, when the sheet 20 is conveyed by a distance obtained by subtracting the correction distance from the predetermined distance, the switching distance is changed. By outputting a drive signal to the box 4, the switch 4 is driven when the transparent sheet 20b of the sheet 20 reaches the branch path 3a, so that the sheet 20 wrapped in the transparent sheet 20b is surely branched. Can be done. After the switch 4 is driven, the switch 4 returns to its original state for a predetermined time, and the branch path 3a is closed.

On the other hand, when the paper sheet 20 is only the paper sheet main body 20a, since the detection by the first detector 5 and the second detector 6 is performed simultaneously, the number of pulses stored in the register 2 Is also zero, and the correction by the correction circuit 9 is not performed.

(Second Embodiment) FIG. 4 is a block diagram of a second embodiment of the paper sheet transport control device of the present invention. In the present embodiment, the transport path 33 includes the first branch path 33a and the second branch path 3a.
3b and a third branch 33c.
The third detector 37, the switch 34, and the correction circuits 39a, 39b, 39 are provided for each of the branch paths 33a, 33b, 33c.
c.

The correction circuit 39 on the most upstream side (hereinafter, referred to as "first stage") among the correction circuits 39a, 39b, 39c.
a includes a third detector 37 in the first stage as in the first embodiment.
, The pulse signal from the pulse generator 31, the number of pulses stored in the register 32, and the branch position information specified by the instruction circuit 40. The first-stage correction circuit 39a outputs a drive signal to the first-stage switch 34 in response to information from the instruction circuit 40, or outputs a pulse signal from the pulse generator 31 and a signal from the register 32. The number of pulses can be directly
To the second-stage correction circuit 39b. The second-stage correction circuit 39b outputs a drive signal to the second-stage switch 34 or receives an input from the first-stage correction circuit 39a in response to an input from the first-stage correction circuit 39a. The contents thus output are directly output to the correction circuit 39c on the further downstream side (hereinafter referred to as “third stage”). Third stage correction circuit 3
9c is the same as the second-stage correction circuit 39b.
Since the first detector 35, the second detector 36, the pulse generator 31, the count circuit 38 and the register 32 are configured in the same manner as in the first embodiment,
Their description is omitted.

Next, the operation of the paper sheet transport control device of this embodiment will be described. This embodiment is the same as the first embodiment until the sheet 20 is detected by the third detector 37 in the first stage and the detection signal is output to the correction circuit 39a in the first stage. The subsequent operation will be described.

First, when the instruction circuit 40 instructs the sheet 20 to be branched to the first branch path 33a, the first-stage correction circuit 39a is operated in the same manner as in the first embodiment.
, The timing at which the first-stage switch 34 is driven is corrected, and the paper sheet 20 is branched to the first branch path 33a.

When the instruction circuit 40 instructs the sheet 20 to be branched to the second branch path 33b, the pulse signal from the pulse generator 31 input to the first-stage correction circuit 39a is output. The pulse signal and the number of pulses from the register 32 are output as they are to the second-stage correction circuit 39b, and even if the paper sheet 20 is detected by the first-stage third detector 37, the first-stage correction circuit 39b The circuit 39a does not output a drive signal for the switch 34. Then, the paper sheet 20 is detected by the third detector 37 in the second stage, and the detection signal is 2
When the signal is output to the correction circuit 39b in the second stage, the timing for driving the switch 34 in the second stage is corrected by the correction circuit 39b in the second stage in the same manner as in the first embodiment, and the sheet 20 is moved to the second position. To the branch path 33b.

Further, when the instruction circuit 40 instructs the sheet 20 to be branched to the third branch path 33c, the pulse signal from the pulse generator 31 input to the first stage correction circuit 39a is output. The pulse signal and the number of pulses from the register 32 are directly output to the third-stage correction circuit 39c via the second-stage correction circuit 39b. Then, as in the case of branching to the second branch path 33b, when the paper sheet 20 is detected by the third detector 37 in the third stage, the third-stage correction circuit 39c causes the third switching circuit 39c to switch to the third stage. Vessel 3
4 is corrected, and the sheet 20 is moved to the third position.
To the branch path 33c.

As described above, the plurality of branch paths 33a, 33
b, 33c, it is necessary to detect the paper sheet 20 for each of the branch paths 33a, 33b, 33c in order to branch the paper sheet 20 at the predetermined branch paths 33a, 33b, 33c more reliably. , The number of detectors used increases accordingly. Particularly, a detector such as an ultrasonic sensor used as the first detector 35 that can detect an opaque member is expensive and is not generally used. Therefore, first, the first detector 3
5 and the second detector 36, the transparent material 2 of the paper sheet 20 is used.
If the distance L from the leading end of the paper sheet main body 20a to the leading end of the sheet body 20a is obtained, the switch 34 may be driven based on this data.
Even when the first detector 3b and the third detector 33c are provided, the amount of use of the first detector can be minimized.

In this embodiment, an example in which the transport path 33 has three branch paths 33a, 33b and 33c has been described, but the number of branch paths is not limited to this.

In each of the above-described embodiments, an example is shown in which the first detector and the second detector are provided at the same position in the paper sheet transport direction. May be located upstream of the second detector or vice versa.
In this case, if information on the distance between the first detector and the second detector in the paper sheet transport direction is input in advance to the correction circuit, the first detector and the second detector can be connected to each other. The correction distance can be obtained without being at the same position in the transport direction of the paper sheet.

Specifically, when the first detector is provided at a distance d upstream of the second detector, the first detection is performed based on the distance corresponding to the number of pulses stored in the register. The correction distance is determined by reducing the distance d between the detector and the second detector. On the other hand, when the first detector is provided at a distance d ′ downstream of the second detector,
Depending on the relationship between the distance d 'and the distance L shown in FIG. 3, the case where the opaque member of the sheet is first detected by the second detector on the upstream side and the case where the first opaque member on the downstream side is first detected by the upstream second detector. In some cases, the detector detects a transparent member of a paper sheet. Therefore, the counting circuit counts the pulse signal from the time when the signal is detected by one of the first detector and the second detector to the time when the pulse signal is detected by the other detector,
It shall be stored in a register. At this time, if the signal is first detected by the upstream second detector, the correction distance is obtained by subtracting the number of pulses stored in the register from the distance d '. Further, when the detection is first performed by the first detector on the downstream side, the correction distance is obtained by adding the number of pulses stored in the register to the distance d ′. In the case where the first detector and the second detector are not provided at the same position in the transport direction of the paper in this way, in order to reduce an error due to slip of the paper in the transport path, It is preferable that the distance between the detectors is small.

[0029]

As described above, the first detector for detecting the transparent member and the second detector for detecting the opaque member are provided along the moving direction of the transport path, and the first detector is provided. Control means for determining the distance from the leading end of the transparent member of the paper sheet to the leading end of the opaque member based on the detection results of the first and second detectors, and correcting the timing for driving the switch according to the distance Is provided, even if the paper sheet is wrapped in a transparent material, it can be surely branched to the branch path.

Further, the first detector and the second detector can determine a correction distance, which is a distance from the leading end of the transparent member of the paper sheet to the leading end of the opaque member. By correcting the drive timing of the switch, it is possible to minimize the amount of use of the first detector even when there are a plurality of branch roads.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a first embodiment of a paper sheet transport control device of the present invention.

FIG. 2 is a diagram showing a first example of the paper sheet transport control device shown in FIG.
FIG. 7 is a perspective view showing an example of the arrangement of the second detector and the second detector.

FIG. 3 is a schematic plan view of paper sheets wrapped in a transparent material.

FIG. 4 is a configuration diagram of a paper sheet transport control device according to a second embodiment of the present invention.

FIG. 5 is a configuration diagram of a conventional paper sheet transport control device.

[Explanation of symbols]

 1, 31 pulse generator 2, 32 register 3, 33 transport path 3a, 33a, 33b, 33c branch path 4, 34 switch 5, 35 first detector 6, 36 second detector 7, 37 3 detector 8, 38 counting circuit 9, 39a, 39b, 39c correction circuit 20 paper sheet 20a paper sheet main body 20b transparent material 10, 40 indicating circuit

Claims (7)

(57) [Claims] A fork that is opened and closed by a switch, a paper path in which an opaque member is wrapped in a transparent member, and a paper path made of an opaque member; a first detector capable of detecting the transparent member of the paper sheets to be conveyed, and a second detector for detecting an opaque member of the paper sheets to be conveyed the conveying path, the sheet in the conveying path The first direction with respect to the moving direction of
A third detector provided on the downstream side of the detector and the second detector, and on the upstream side of the branch path, for detecting an opaque member of a sheet conveyed on the conveyance path; When the instruction circuit for instructing whether or not the sheet is to be branched to the branch path indicates that the sheet is to be branched, the sheet is detected by the first detector. A correction distance, which is a distance from the tip of the transparent member to the tip of the opaque member detected by the second detector, is determined, and the sheet is detected by the third detector. Control means for driving the switch when a distance shorter than the predetermined distance, which is a distance from the third detector to the branch road, is shorter than the predetermined distance from the third detector. A sheet transport control device characterized by the above-mentioned. 2. The method according to claim 1, wherein the second detector is provided in the transport path .
The paper sheet transport control device according to claim 1, wherein the paper sheet transport control device is provided at the same position as the first detector with respect to the moving direction of the paper sheet. 3. The paper sheet according to claim 1, wherein the transport path has a plurality of branch paths, and a plurality of the switch and the third detector are provided corresponding to the plurality of branch paths. Type transport control device. 4. A control device comprising: a pulse generator configured to generate a number of pulses corresponding to a moving amount of a sheet on the conveyance path; and a detection unit configured to detect a pulse from the first detector and the second detector. Only when the signal is input and the sheet is detected by one of the detectors until the sheet is detected by the other detector, a pulse output from the pulse generator is output. a counting circuit for counting the number of a register for storing the counted number of pulses in the counting circuit, wherein upon driving the switch with pre Symbol number of pulses stored in the register, and the sheet in the conveying path Distance between the first detector and the second detector in the moving direction of
The correction distance is obtained based on the following formula, and when the detection signal is input from the third detector, when the sheet on the transport path moves by a distance obtained by subtracting the correction distance from the predetermined distance, the switch is performed. 3. The paper sheet transport control device according to claim 1, further comprising a correction circuit that outputs a drive signal to the container. 5. The transport path according to claim 4, wherein the transport path has a plurality of branch paths, and a plurality of the switch, the third detector, and the correction circuit are provided correspondingly. Paper transport controller. 6. The paper sheet transport control device according to claim 1, wherein said first detector is an ultrasonic sensor. 7. The sheet transport control device according to claim 1, wherein each of the second detector and the third detector is a photoelectric sensor.