JP2806639B2 - Paper-sheet reversing transport mechanism - 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 reversing transport mechanism,
In particular, the present invention relates to a reversing transport mechanism for reversing and transporting a sheet in a sheet transport apparatus.

[0002]

2. Description of the Related Art Conventionally, in this type of reverse transport mechanism,
As shown in FIGS. 9 and 10, the feed roller 31a
Conveyor belt 39a hung between the sheet and the paper scraping rubber windmill 32, and feed rollers 31b to 31e, 31
f-31h, 31j-31l, 31m-31o, 31p
Conveyor belts 39b to 39f respectively hung between ~ 31r
, A feed path including a feed roller 31i, a link drive solenoid 33, a link arm 34, a paper sheet stopper 35, and a guide table 36. 9 and 10, the conveyor belt 39
The reversing transport mechanism is installed such that the contact surfaces a and 39b are horizontal.

[0003] When the paper sheet 14 is conveyed without requiring the reversal, as shown in FIG.
Is in a push state. When the link drive solenoid 33 is pushed, the guide table 36 is lifted by the link arm 34 so as to be parallel to the transport belt 39b, and the sheet stopper 35 is lowered from the transport belt 39b.

[0004] In the above state, when the sheets 14 conveyed by the conveying path (not shown) enter from the reverse conveying mechanism entrance N, the sheets 14 are sequentially conveyed in the directions of arrows M1 to M5. The sheet is discharged from the reverse transfer mechanism outlet P through the transfer junction O.

[0005] Further, in the case of conveyance requiring reversal,
As shown in FIG. 10, the link drive solenoid 33 is set to the pull state. In other words, if it is determined that the discrimination unit (not shown) provided in front of this reversing transport mechanism needs to be turned upside down, the paper sheet detecting unit constituted by the light receiving element 37 and the light emitting element 38 is used. The link drive solenoid 33 is pulled by using a signal indicating that the conveyance of the sheet 14 is detected as a trigger.

When the link driving solenoid 33 is pulled, the left end of the guide table 36 is lowered by the link arm 34, and the sheet stopper 35 is moved to the transport belt 39.
b, that is, a state in which the paper sheet stopper 35 projects from the transport belt 39b.

In this state, when the conveyed paper sheet 14 enters from the reverse conveyance mechanism entrance N, the paper sheet 14 hits the paper sheet stopper 35 and temporarily stops at that position. At this time, the rear end of the paper sheet 14 is scraped off by the paper sheet scraping rubber windmill 32 rotating in the direction of the arrow M, and the paper sheet 14 falls on the guide table 36.

Thereafter, the paper sheets 14 are sequentially conveyed in the directions of arrows M6 to M11, and are conveyed out of the reversing conveyance mechanism outlet P through the converging section O.

By repeating the operation shown in FIGS. 9 and 10 in accordance with the information on the front and back of the sheets 14 sent from the discriminating section, the front and back of the sheets 14 are aligned.

In such a conventional reversing transport mechanism, the paper sheet 14 is not supported during the reversing operation, and the rear end of the paper sheet 14 is scraped off by the paper scraping rubber windmill 32 so that the paper sheet is Since the class 14 only falls on the guide table 36, there is a problem that the state of the sheet 14 is not stable, a paper jam of the sheet 14 occurs, or the sheet 14 is skewed. Further, there is a problem that the reversal time when the rear end of the paper sheet 14 moves from the entrance to the exit is not constant.

Further, since the entrance of the reversing transport mechanism is one place, the sheet interval l that can be processed by the reversing transport mechanism is as follows.

L ≧ v / t + a Here, v indicates the transport speed, t indicates the reversing operation time of the paper sheet 14, and a indicates the distance from the reverse transport mechanism entrance N to the paper sheet stopper 35. I have.

Therefore, the transport speed v is increased, and
When the reversing operation time t of FIG. 4 is shortened, the sheet interval l must be increased. To decrease the sheet interval l, the transport speed v must be reduced or the sheet
However, there is a problem that the processing capability is limited because the inversion operation time t must be increased.

[0014]

SUMMARY OF THE INVENTION The object of the present invention is to eliminate the above-mentioned problems of the prior art, and to shorten the reversing operation time of paper sheets and to process even shorter paper sheet intervals. It is an object of the present invention to provide a reversible transport mechanism for paper sheets that can be turned over.

[0015]

According to the present invention, there is provided a paper sheet reversing / conveying mechanism according to the present invention, comprising: a forward / reverse rotatable roller for conveying a carried paper sheet in a forward / reverse direction; A first carry-in path for carrying paper sheets into the roller,
A second carry-in path for carrying the paper sheets into the roller when the roller rotates in the reverse direction, and carrying out the paper sheets carried in from the first carry-in path when the roller rotates in the forward direction. A first unloading path, a second unloading path that unloads the papers loaded from the second unloading path to the outside when the roller rotates in the reverse direction, and a second unloading path according to a rotation direction of the roller. Switching means for switching the loading of paper sheets into the first and second loading paths, and the paper sheets to the switching means
Detecting means for detecting the carry-in of a roller, and an outer periphery of the roller
The first and second loading paths and the first and second
A sheet disposed at a predetermined position between the sheet and the second discharge path;
Second detecting means for detecting the transport of a class to the predetermined position
And the sheet fed from the first loading path in response to the reversal instruction for the sheet is the second detecting means.
The roller was rotated in the forward direction until detected by
And control means for controlling so that later in the roller is rotated in the reverse unloading the paper sheet from <br/> said second feed-out path, said control means rotates the rollers in the opposite direction
The papers conveyed next to the papers when the
When the detecting means is detected by the first detecting means, the switching means is switched to the second one.
And control means for switching to carry-in to the second carry-in path .

[0016]

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

FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, a paper sheet reversing transport mechanism according to an embodiment of the present invention is a large-diameter grip roller 1 rotatable in forward and reverse directions (directions of arrows A and B), and is brought into contact with the large-diameter grip roller 1. Small-diameter grip rollers 2a, 2b, feed rollers 3a to 3d, 3n, 3o, a sheet detecting unit including light receiving elements 4, 5 and light emitting elements 6, 7, feed rollers 3g to 3j, 3k to 3m, 3p-3q, 3r-3s
The transport belts 9a to 9d, the transport guides 8a to 8g, the gates 10 and 11 urged toward the large-diameter grip roller 1 by springs 12a and 12b, and the reverse transport section entrances F and G, respectively. And a selection gate 13 for switching the transfer of the sheet. The paper sheet reversing conveyance mechanism is installed such that the conveyance path including the conveyance guides 8a and 8b is horizontal.

Sheets (not shown) are the selection gate 13
When the sheet is conveyed to the reversing conveyance section entrance F side by the feed rollers 3a and 3b, the paper sheet is conveyed to the reversing conveyance section H by the feed rollers 3c and 3e while pushing up the gate 10. At this time, the large-diameter grip roller 1
Is rotated in the direction of arrow A, the paper sheet is conveyed to the reversing conveyance section exit J side by the large-diameter grip roller 1 and the small-diameter grip rollers 2a and 2b. Thereafter, the paper sheets are sequentially conveyed in the directions of arrows A1 to A4 by the feed rollers 3d and 3o, the conveyance belts 9b and 9d, and the conveyance guides 8f and 8g, and are reversed through the reversing conveyance section exit J and the conveyance merging section K. It is carried out from the transport mechanism exit L.

On the other hand, when the sheets are switched by the selection gate 13 and conveyed to the reversing conveyance section entrance G side by the feed rollers 3a and 3b, the sheets are pushed down by the feed rollers 3d and 3f while pushing down the gate 11. It is transported to the reverse transport section H. At this time, when the large-diameter grip roller 1 is rotated in the direction of arrow B, the sheets are conveyed toward the reversing conveyance section exit I by the large-diameter grip roller 1 and the small-diameter grip rollers 2a and 2b. Thereafter, the paper sheets are sequentially conveyed in the directions of arrows B1 to B4 by the feed rollers 3c and 3n, the conveyance belts 9a and 9c, and the conveyance guides 8e and 8g, and are reversed through the reversing conveyance section exit I and the conveyance merging section K. It is carried out from the transport mechanism exit L.

FIGS. 2 to 7 are diagrams showing the operation of an embodiment of the present invention. The operation of the embodiment of the present invention will be described with reference to FIGS. A discriminating unit (not shown) for determining whether or not the paper sheet needs to be turned upside down is provided in front of the paper sheet upside down transport mechanism according to the embodiment of the present invention. When the document comes in from the reverse transport mechanism entrance E, it is assumed that front and back information from the discriminating unit indicating whether or not the paper sheet needs to be reversed is also input. The control unit (not shown) rotates the large-diameter grip roller 1 based on the front and back information from the discrimination unit and the detection signal from the sheet detection unit including the light receiving elements 4 and 5 and the light emitting elements 6 and 7. And the driving thereof, the driving of the feed rollers 3a to 3s, and the switching operation of the selection gate 13 are controlled respectively.

FIG. 2 shows the operation when the reversing operation is not required at the beginning of the transport operation. In FIG. 2, a sheet 14 entering from the reverse transport mechanism entrance E is transported to the reverse transport section entrance F side by the selection gate 13 and the feed rollers 3 a and 3 b. Further, the paper sheet 14 is transported to the reverse transport section H while pushing up the gate 10 by the feed rollers 3c and 3e.

At this time, the large-diameter grip roller 1 is
, The sheet 14 is conveyed to the reversing conveyance section exit J side by the large-diameter grip roller 1 and the small-diameter grip rollers 2a and 2b. Then, paper sheets 14
Are sequentially conveyed in the directions of arrows A5 to A8 by the feed rollers 3d and 3o, the conveyance belts 9b and 9d, and the conveyance guides 8f and 8g.
Through the reverse transport mechanism outlet L.

FIG. 3 and FIG. 4 show the operation in the case of carrying in which the reversing operation is performed. In FIG. 3, when the sheet detecting unit including the light receiving element 5 and the light emitting element 7 detects the leading end of the sheet 14 conveyed to the reversing conveying unit H, the control unit responds to the detection signal and sets the large-diameter sheet. The rotation of the grip roller 1 is stopped. Thereafter, as shown in FIG. 4, the control unit rotates the large-diameter grip roller 1 in the direction of the arrow B, so that the paper sheet 14 is turned by the large-diameter grip roller 1 and the small-diameter grip roller 2a on the reverse transport unit exit I side. Transported to Further, the paper sheet 14 is moved by an arrow B by feed rollers 3c and 3n, transport belts 9a and 9c, and transport guides 8e and 8g.
The sheet is sequentially conveyed in the directions of 5 to B8, and is discharged from the reverse conveying mechanism outlet L through the reverse conveying section exit I and the conveying junction K. At this time, the front and back of the paper sheet 14 are inverted.

When the above-described reversing operation is performed, as shown in FIG. 4, when a sheet 15 next to the sheet 14 enters from the entrance E of the reversing and conveying mechanism, the sheet 15 becomes a light receiving element. The paper sheet detecting unit including the light emitting element 4 and the light emitting element 6 detects the sheet. When the sheet detecting section detects the leading end of the sheet 15, the control section moves the selection gate 13 to the position C in response to the detection signal.
From position to position D.

Therefore, the paper sheet 15 is
The sheet is conveyed to the reverse conveying section entrance G side by a and 3b. Thereafter, the paper sheet 15 is transported to the reversing transport section H by the feed rollers 3d and 3f while pushing down the gate 11.

At this time, the large-diameter grip roller 1 is
, The sheet 15 is conveyed to the reversing conveyance section exit I side by the large-diameter grip roller 1 and the small-diameter grip rollers 2a and 2b. After that, paper sheets 15
Are sequentially conveyed in the directions of arrows B5 to B8 by feed rollers 3c and 3n, conveying belts 9a and 9c, and conveyance guides 8e and 8g.
Through the reverse transport mechanism outlet L. Accordingly, when the sheet 14 conveyed from the reverse conveyance section entrance F to the reversal conveyance section H is conveyed to the reversal conveyance section exit I side, the next sheet 15 is reversed from the reversal conveyance section entrance G. Since the sheet is conveyed to the conveying section H, the sheets 14 and 15 do not overlap in the reverse conveying section H even if the sheet interval between the sheets 14 and 15 is short. Therefore, the processing capacity can be improved by shortening the interval between the sheets 14 and 15.

FIG. 5 shows an operation in the case of conveyance that does not require reversal after the reversal operation. When the inversion operation as shown in FIGS. 3 and 4 is performed, the selection gate 13
Remains moved to position D. In this state, when a sheet 14 that does not require reversal is conveyed, as shown in FIG. 5, the sheet 14 is conveyed by the feed rollers 3a and 3b to the reversal conveyance section entrance G side. Thereafter, the paper sheet 14 pushes down the gate 11 and feed rollers 3d,
The sheet is conveyed to the reverse conveying section H by 3f.

At this time, the large-diameter grip roller 1 is
, The paper sheet 14 is conveyed to the reversing conveyance section exit I side by the large-diameter grip roller 1 and the small-diameter grip rollers 2a and 2b. Furthermore, paper sheets 14
Are sequentially conveyed by feed rollers 3c and 3n, conveying belts 9a and 9c, and conveying guides 8e and 8g in the directions of arrows B9 to B12.
Through the reverse transport mechanism outlet L.

FIG. 6 and FIG. 7 show an operation in the case of a transport requiring inversion after the inversion operation. When the inversion operation as shown in FIGS. 3 and 4 is performed, the selection gate 13 remains moved to the position D. In this state, when a sheet 14 requiring reversal is transported,
The paper sheet 14 is conveyed by the feed rollers 3a and 3b to the reverse conveying unit entrance G side. Thereafter, the paper sheet 14 is transported to the reversing transport section H by the feed rollers 3d and 3f while pushing down the gate 11. The light receiving element 5 and the light emitting element 7
When the paper sheet detecting unit of the control unit detects the detection, the control unit stops the rotation of the large-diameter grip roller 1 in response to the detection signal as shown in FIG.

Thereafter, as shown in FIG. 7, the control unit rotates the large-diameter grip roller 1 in the direction of arrow A, so that the paper sheet 14 is turned over by the large-diameter grip roller 1 and the small-diameter grip roller 2a. It is transported to the exit J side. Further, the paper sheet 14 is sequentially conveyed in the directions of arrows A9 to A12 by the feed rollers 3d and 3o, the conveyance belts 9b and 9d, and the conveyance guides 8f and 8g, and passes through the reverse conveyance section exit J and the conveyance junction K. It is carried out from the reverse transport mechanism outlet L. At this time, the front and back of the paper sheet 14 are inverted.

When the above-described reversing operation is performed, as shown in FIG. 7, when a sheet 15 next to the sheet 14 enters from the entrance E of the reversing and conveying mechanism, the sheet 15 becomes a light receiving element. The paper sheet detecting unit including the light emitting element 4 and the light emitting element 6 detects the sheet. When the leading end of the paper sheet 15 is detected by the paper sheet detection unit, the control unit moves the selection gate 13 from the position D to the position C in response to the detection signal.

Therefore, the paper sheet 15 is
The sheet is conveyed to the reverse conveying section entrance F side by a and 3b. Thereafter, the paper sheet 15 is transported to the reverse transport section H by the feed rollers 3c and 3e while pushing up the gate 10.

At this time, the large-diameter grip roller 1 has an arrow A
, The sheet 15 is conveyed to the reversing conveyance section exit J side by the large-diameter grip roller 1 and the small-diameter grip rollers 2a and 2b. After that, paper sheets 15
Are sequentially conveyed in the directions of arrows A9 to A12 by the feed rollers 3d and 3o, the conveyance belts 9b and 9d, and the conveyance guides 8f and 8g.
Through the reverse transport mechanism outlet L. By this operation, the reverse-side transport mechanism has returned to the initial state shown in FIG.

The operation shown in FIG. 2 to FIG.
By repeatedly performing the front and back information according to the front and back information from the discrimination unit, the front and back of the paper sheets 14 and 15 sent at regular intervals can be performed.

FIG. 8 is a diagram showing a transport drive system and a reverse transport drive system according to one embodiment of the present invention. In the drawing, the shaft supporting the large-diameter grip rollers 1-1 and 1-2 is a bearing 18.
-1 and 18-2. The support shafts of the large-diameter grip rollers 1-1 and 1-2 and the actuator (stepping motor) 16 are directly connected by a connection coupling 20 in a support bracket 19. further,
The shafts supporting the small-diameter grip rollers 2b-1 and 2b-2 abutting on the large-diameter grip rollers 1-1 and 1-2 are also supported by bearings 18-3 and 18-4.

On the other hand, the conveyor belts 9a-1, 9a-2, 9b-
Feed rollers 3j-1 and 3j- for respectively driving 1, 9b-2
The shafts that support 2, 3m-1 and 3m-2 also have bearings 18-
5, 18-6. The support shafts of the feed rollers 3m-1 and 3m-2 are connected to a transport speed detecting unit (encoder) 21.

The transport speed detecting section 21 is provided with a feed roller 3a.
To 3d, 3n, 3o and feed rollers 3g to 3j, 3
It detects the speed of a transport path composed of transport belts 9a to 9d hung between k to 3m, 3p to 3q, and 3r to 3s and transport guides 8a to 8g. The control unit 22 controls the speed of the actuator 16 based on the speed information of the conveyance path detected by the conveyance speed detection unit 21.

The above-mentioned transport path is composed of large-diameter grip rollers 1-1,
Since the drive unit is driven by a drive system (not shown) different from the drive system 1-2, the control unit 22 controls the speed between the transfer paths or between the transfer paths and the reversing transfer unit H at the transfer. Paper 1
4 and 15 can be prevented from being sluggish or caught.

Further, since the support shafts of the large-diameter grip rollers 1-1 and 1-2 and the actuator 16 are directly connected by the connection coupling 20, the inertial weight of the driven portion of the actuator 16 can be reduced. it can. Therefore, the large-diameter grip roller 1 by the actuator 16
Since the operation time of the forward / reverse rotation of -1 and 1-2 can be shortened, the front / back reversal process can be performed even at a shorter sheet interval.

Further, the large-diameter grip roller 1-
The paper sheets 14 and 15 can be supported by 1, 1-2 and the small-diameter grip rollers 2b-1 and 2b-2, and the carry-in path and the reverse transport from the reverse transport section entrances F and G to the reverse transport path H. Road H
The gates 1 and 2 are the exit routes to the reverse transport exits I and J, respectively.
Since they are distinguished by 0 and 11, stable inversion operation is possible.

As described above, when the sheets 14 and 15 are reversed, the leading ends of the sheets 14 and 15 carried into the reversing conveyance path H from the reversing conveyance section entrance F or the reversing conveyance section entrance G are connected to the light receiving element 5. The rotation of the large-diameter grip roller 1 is stopped when the large-diameter grip roller 1 is detected by the paper-sheet detecting unit including the light-emitting element 7, and then the large-diameter grip roller 1 is rotated in the reverse direction, so that the paper 14,
By transporting the sheet 15 to the reversing conveyance section exit I or the reversing conveyance section exit J, the reversing operation time of the sheets 14 and 15 can be shortened, and processing can be performed even with a shorter sheet interval. be able to. At this time, by switching the reversing conveyance section entrances F and G for carrying the papers 14 and 15 into the large-diameter grip roller 1 by the selection gate 13, it is possible to perform the reversal processing even at a short paper interval.

Further, by controlling the speed of the actuator 16 on the basis of the speed information of the conveyance path detected by the conveyance speed detecting section 21, the transfer between the conveyance paths or the connection between the conveyance path and the reverse conveyance section H is possible. Of the paper sheets 14 and 15 can be prevented. This actuator 1
6 and the large-diameter grip roller 1 are directly connected by the connection coupling 20 so that the actuator 16
Can be reduced, the reversing operation in the reversing conveyance section H can be shortened, and the reversing process can be performed even with a shorter sheet interval.

Further, a carry-in path from the reversal conveyance section entrances F and G to the reversal conveyance path H and a carry-out path from the reversal conveyance path H to the reversal conveyance section exits I and J are separated by gates 10 and 11, respectively, so that a large diameter is obtained. Grip roller 1 and small-diameter grip roller 2
By performing the reversing operation while supporting the paper sheets 14 and 15 with the paper sheets 14 and 15, the processing time is constant and the paper sheets 14 and 15 are
It is possible to perform a stable reversing operation without rattling or catching.

[0044]

As described above, according to the present invention, in response to a reversal instruction for a paper sheet, the paper sheet is loaded from the first loading path for loading the paper sheet into the roller when the roller rotates in the forward direction. A sheet is transported between a first carry-in path by rotation of the roller in the forward direction and a first carry-out path for carrying out the sheet carried in from the first carry-in path to the outside when the roller rotates in the forward direction. Is controlled to rotate the roller in the reverse direction after being transported to the predetermined position, and to carry out the papers carried in from the second carry-in path to the outside when the roller rotates in the reverse direction. Thus, there is an effect that the reversing operation time of paper sheets can be shortened, and processing can be performed even with a shorter paper sheet interval.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is a diagram illustrating an operation when a reversing operation is not required at the beginning of a transport operation according to an embodiment of the present invention.

FIG. 3 is a diagram illustrating an operation in the case of conveyance in which a reversing operation is performed according to an embodiment of the present invention.

FIG. 4 is a diagram illustrating an operation in the case of a transport that performs a reversing operation according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating an operation in the case of a transport that does not require reversal after a reversal operation according to an embodiment of the present invention.

FIG. 6 is a diagram illustrating an operation in the case of a transport requiring inversion after an inversion operation according to an embodiment of the present invention.

FIG. 7 is a diagram illustrating an operation in the case of a transport requiring inversion after an inversion operation according to an embodiment of the present invention.

FIG. 8 is a diagram illustrating a transport drive system and a reverse transport drive system according to an embodiment of the present invention.

FIG. 9 is a diagram illustrating an operation of a conventional example in the case of a transport that does not need to be turned over.

FIG. 10 is a diagram illustrating an operation of a conventional example in the case of a transport that requires turning over.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Large diameter grip roller 2 Small diameter grip roller 3a-3s Feed roller 4,5 Light receiving element 6,7 Light emitting element 10,11 Gate 12a, 12b Spring 13 Selection gate 14,15 Paper 16 Actuator 17 Actuator 21 Transport speed detecting part 22 Control unit

Claims (2)

(57) [Claims] 1. A forward / reverse rotatable roller for transporting conveyed paper sheets in a forward / reverse direction, a first carry-in path for carrying the paper sheets into the rollers when the roller rotates in a forward direction, A second carry-in path for carrying the paper sheets into the roller when the roller rotates in the reverse direction, and carrying out the paper sheets carried in from the first carry-in path when the roller rotates in the forward direction. A first unloading path, a second unloading path that unloads the papers loaded from the second unloading path to the outside when the roller rotates in the reverse direction, and a second unloading path according to a rotation direction of the roller. Switching means for switching the loading of paper sheets into the first and second loading paths, and switching of the paper sheets to the switching means.
First detecting means for detecting the carry-in;
The first and second loading paths and the first and second
And a paper sheet disposed at a predetermined position between the paper sheet and the carry-out path.
Second detecting means for detecting the conveyance of the sheet to the predetermined position,
In response to the reversal instruction for the paper sheet, the paper sheet carried in from the first carry-in path is detected by the second detection means.
After rotating the roller in the forward direction until notified, a control unit that controls the roller to rotate in the reverse direction so as to carry out the paper sheet from the second carry-out path , Before
The control means is rotating the roller in the opposite direction.
Sometimes, the paper sheet conveyed next to the paper sheet is the first inspection.
When the switching means is detected by the detecting means,
Means for controlling switching to carry-in to an entrance path . 2. A detector for detecting the transport speed of the paper sheet, and control means for controlling the rotational speed of the roller in accordance with the conveying speed detected by said detecting means including
Sheet reversing conveying mechanism according to claim 1, wherein the free it.