JPS6327353A - Pickup system for medium - Google Patents

Abstract

PURPOSE:To improve the extent of delivery capacity, by reversing a pickup roller at a time when duration till the paper delivered by the pickup roller has passed through a sensor is longer than the reference value, and making the paper come close to a separate claw, thereby redelivering it. CONSTITUTION:A lot of sheets of paper S stacked in a hopper 2 are pushed upward by a pressing plate 6 and a coil spring 7, coming into contact with a pickup roller 3. When this pickup roller 3 is rotated in the reverse direction to the direction C illustrated, a paper sheet on a topmost stage of these sheets S is bent as illustration 1', finally comes off a separate claw 5, going forward between discharge rollers 9 and 20, and a sensor 10 detects this passage of he paper sheet. When stiffness of the paper sheet is weak and for some reason or other, if the paper sheet comes to e as illustration 1, the sensor 10 outputs nothing. When the sensor 10 fails to output even if the specified time elapses, the roller 3 is reversed as the said direction C, pulling the paper sheet 1 back, and the roller 3 is restarted after making it come close to the claw 3. With this constitution, delivering capacity is improved and reliability is raised up.

Description

[Detailed Description of the Invention] [Summary] When the judgment circuit detects that the time has elapsed for the fed-out medium and makes a negative judgment, the pick roller is reversed to return the medium to its original position, and then the pick The reliability of feeding is improved by moving the roller a predetermined amount in the direction of the separating claw and feeding out the medium again.

[Industrial application field]

The present invention relates to a pick method of a feeding mechanism that feeds out stacked media one by one.

ATM (Automated T) is a financial terminal device.
ellers machines), printers, etc., are equipped with a feeding mechanism that feeds out media such as stacked banknotes or cut sheets one by one.

There is a particular demand for these feeding mechanisms to be highly reliable.

[Conventional technology]

A conventional medium feeding device is configured as shown in the block diagram of the medium picking method shown in FIG.
The cards are stacked on top of each other, and the cards are rolled out one by one in order starting from the top one.

That is, a pink roller 3 having a large friction coefficient contacts the medium 1 at the top of the hopper 2 in close proximity to the feeding section 4 (left side in the figure).

The feeding portion 4 is provided with a hook-shaped separating claw 5 as shown in the figure.
A presser 6 is provided at the bottom of the hopper 2 to constantly press the superimposed medium 1 against the pick roller 3, and is biased in the direction of arrow A by biasing means such as a coil spring 7.

There is a guy in the feeding section 4 that guides the fed medium 1).
1M8a, 8b, a feed roller 9 that transfers the guided medium 1 in a predetermined direction, and a medium detection sensor 10 that detects the medium 1 transferred by the feed roller 9.

The medium detection sensor 10 has, for example, a light emitting element 10a and a light receiving element 10b facing each other with a gap in between, and detects when the medium 1 is inserted into the gap and blocks the optical path.

A determination circuit 11 that compares the elapsed time until delivery with a predetermined standard required time and determines whether the time is appropriate or not.
, a pink roller up/down mechanism 14 that drives the feed roller 9 and brings the feed roller into contact with and separates from it, an alarm circuit 17 that drives the arm 16, and a control unit 1 that controls all of these.
It consists of 8 mag.

The medium picking method will be explained below with reference to the flowchart of FIG.

First, when a medium feeding command is issued from the main control section (not shown), the control section 18 instructs the pick roller up/down circuit to drive the pinocrawler up/down mechanism 14,
The pinocrawler 3 is brought down and comes into contact with the medium 1.

Next, the feed roller drive circuit 12 and pick roller drive circuit 13 are instructed to rotate the pink roller 3 and the feed roller 9 in the direction of arrow B shown in FIG. 7 (al).

At the same time as the pick roller 3 is driven, the control section 18 starts counting time using a programmable timer 19 that can arbitrarily set the counting time via the determination circuit 11.

As the pick roller 3 rotates, the topmost sheet of the medium 1 is pushed toward the separating claw 5 as shown in FIG. 7 (al).

The medium 1 that has been pushed is pressed by the separating claw 5, and after once expanding outward as shown in the figure, it bursts from the separating claw 5 and is separated as shown in the figure (bl).

The medium 1 separated in this manner is further pushed by the pinocrawler 3, guided by guide plates 8a and 8b, fed between the feed roller 9 and the pinch roller 20, and transported in a predetermined direction.

The medium 1 to be transferred is detected by the medium detection sensor 10, and the detected information G is inputted to the determination circuit 11 via the detection circuit 21, and is stored in advance in the determination circuit 11 as the count time of the programmable timer 19 at the time of input. The appropriate time from starting the pick roller 3 to detecting the medium is compared.

If it is within the specified time, is there a limit? The 111 unit 18 instructs the pick roller drive circuit 13 and the big roller up/down circuit 15 to stop the rotation of the pick roller 3, and
7 to separate it from the media surface.

Then, the rotation of the feed roller 9 continues and stops until the medium 1 passes through the gap between the medium detection sensors 10 and the medium 1 is no longer detected, and the passage is confirmed.

On the other hand, if the medium sensor 10 does not detect the medium 1 even after the appropriate time stored in the determination circuit 11 has elapsed, the medium 1
This means that the feeding is not performed normally, so the control unit 18 drives an alarm 16 such as a bell via the alarm circuit 17 to generate the alarm.

[Problem that the invention seeks to solve]

As explained above, the media in the hopper are separated and fed out one by one. For example, in the case of thin (soft) media, the Biwa crawler moves the media as shown in Figure 7 (C1). The medium is folded up without coming off the separation claw even when it is pushed to the separation claw.

At this time, if the device does not have a judgment circuit or if the set time of the programmable timer is not appropriate, the medium will be transported in a folded state, and even if the judgment circuit detects a delay in the medium, it will simply issue an alarm. However, there was a problem in that the media feeding performance was poor and reliability was lacking.

[Means for solving problems]

FIG. 1 is a block diagram of the principle of the present invention.

In the present invention, as shown in the figure, when the determination circuit 11 detects a delay in the medium 1 and determines whether or not the feeding is abnormal, the control unit 18 reverses the big roller 3 and then switches the big roller forward and backward movement circuit 22. The pinocrawler reciprocating mechanism 23 is driven via the pick roller 3 to move the pick roller 3 a predetermined amount in the direction of the separating claw 5, and the medium 1 is fed out again.

[Effect]

To move the pick roller in the direction of the separation claw when refeeding,
The elasticity with which the medium is repelled outward increases, improving the feeding performance.

〔Example〕

2 to 4 show an embodiment of the present invention.

Identical parts are designated by the same reference numerals throughout the figures.

In the present invention, as shown in the block diagram of FIG. 2, in addition to the conventional medium pink method explained in FIG. A big roller forward and backward movement mechanism 23 driven by a circuit 22 is provided.

The operation of the medium pick-up method of the present invention will be explained with reference to the flowchart of FIG. 3 and the side view illustrating the operation of the feeding device of FIG. 4.

If the medium sensor 10 does not detect the medium 1 even after a predetermined period of time has elapsed, the determination circuit 11 determines this as an abnormality, and in the prior art, it simply issues an alarm.

In the present invention, at this point, the medium 1 is
It is determined that the feed roller 4 is in the folded state as shown in FIG. 4, and the rotation of the pick roller 3 and the feed roller 9 is stopped.

Next, the control unit 18 in FIG. 2 instructs the pinocrawler drive circuit 13 to reversely move the pick roller 3 in the direction of arrow C as shown in FIG. 4(a).

Simultaneously with the start of this reverse rotation, the programmable timer 19 starts counting the time until the same time as the time when the medium 1 was sent is reached.

Then, at the same time, the rotation of the pick roller 3 and the feed roller 9 is stopped.

In this way, the medium 1 returns to its state before being fed out, as shown in FIG. 4(b).

When the medium 1 returns to its original state, the control unit 18 drives the big roller up/down mechanism 14 via the big roller up/down circuit 15 shown in FIG. 2 to raise the pink roller 3 and separate it from the medium surface. .

Next, the control section 18 drives the pick roller forward and backward movement mechanism 23 via the pick roller forward and backward movement circuit 22, and moves the bin roller 3 in the direction of the separating claw 5 as shown in FIG. 4(C).

The amount of movement for suitable separation is determined experimentally because it varies depending on the paper quality, thickness, etc. of the medium I.

When the movement is completed, the control unit 18 again drives the pick roller up/down mechanism 14 via the pick roller up/down circuit 15 to lower the pick roller 3 and bring it into contact with the medium surface.

That is, as shown in FIG. 4(C), it is moved from the position indicated by the two-dot chain line to the position indicated by the solid line.

When the pickronilla 3 comes into contact with the medium surface, the control unit 18 controls the pick roller drive circuit 13 and the feed roller drive circuit 12.
command to move the pick roller 3 and feed roller 9 as shown in Fig. 4 (
Rotate in the direction of arrow B as shown in C1 to separate the medium 1 from the separating claw 5.
to be pushed to

At the same time, as in the prior art, the control section 18 controls the determination circuit 1.
Start counting time using programmable timer 19 via 1.

The medium 1 that has been pushed is pressed by the separating claw 5 and once swells outward as shown in FIG.
As shown in FIG. 2 , it bursts from the separation claw 5 and is separated.

The medium 1 separated in this manner is further pushed by a pick roller 3, guided by guide plates 8a and 8b, and transported in a predetermined direction by a feed roller 9 and a pinch roller 20.

The transferred medium 1 is detected by the medium detection sensor 10 shown in FIG.
The count time of the programmable timer 19 at the time of input is compared with the appropriate time from activation of the pink roller 3 to medium detection, which is stored in advance in the determination circuit 11.

If it is within the predetermined time, the control unit 18 controls the pick roller drive circuit 13 and the pick roller up/down circuit 15.
The rotation of the pick roller 3 is stopped, and then the pick roller 3 is raised and separated from the surface of the medium.

Then, the rotation of the feed roller 9 continues to stop until the medium 1 passes through the gap between the medium detection sensors 10 and the medium 1 is no longer detected, and its passage is confirmed.

The controller 18 determines that feeding is impossible, and instructs the pick roller drive circuit 13 and the feed roller drive circuit 12 to stop the rotation of the pink roller 3 and the feed roller 9, and drives the alarm 16 via the alarm circuit 17. occurs.

〔Effect of the invention〕

As explained above, by applying the medium picking method of the present invention to the device, the pick roller can be moved to the optimum feeding position that differs depending on the medium and re-feeding can be performed. It has great industrial effects, such as improved reliability.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the principle of the big method of the medium of the present invention, Fig. 2 is a block diagram of the pink method of the medium of the present invention, Fig. 3 is a flowchart of the big method of the medium of the present invention, Fig. 4 (a) ) ~ (C1 is a side view of the feeding device for explaining the operation of the big method of the medium of the present invention, FIG. 5 is a block diagram of the pink method of the conventional medium, FIG. 6 is a flowchart of the big method of the conventional medium, 7(al) to (C) are side views of a feeding device for explaining the operation of the conventional medium pick-up method. In the figure, 1 is the medium, 2 is the hopper, 3 is the pick roller, and 4 is the feeding device. , 5 is a separation claw, 6 is a pressure plate, 7 is a coil spring, 8a and 8b are guide hands, 9 is a feed roller, 10 is a medium detection sensor,
11 is a determination circuit, 12 is a feed roller drive circuit,
13 is a pick roller drive circuit, 14 is a pick roller up/down mechanism, 15 is a pick roller up/down circuit, 16 is an alarm, 1
7 is an alarm circuit, 18 is a control unit, 19 is a programmable timer, 20 is a pinch roller, 21 is a detection circuit, 22 is a pick roller forward/backward movement circuit, and 23 is a pick roller forward/backward movement mechanism. grass 7z

Claims (1)

[Claims] The overlapping ends in the feeding direction are pressed against the surface of the medium (1) that is locked by the separating claw (5), and the medium (1) is separated into one sheet by rotating in a predetermined direction. a pick roller (3) that is flicked and fed out by the separation claw (5); a medium detection sensor (10) provided at a predetermined distance from the separation claw (5); The elapsed time from the start of medium feeding until the medium detection sensor (10) detects the medium (1) is compared with a predetermined standard required time.
) Judgment circuit (
11), the medium picking method is configured to issue an alarm when the judgment circuit (11) makes a negative judgment, wherein a portion in pressure contact with the medium (1) is displaced in the feeding direction of the medium (1). A pick roller forward/backward movement mechanism (23) is provided to move the pick roller (3) as shown in FIG. A medium picking method characterized in that (3) is moved by a predetermined amount in the direction of the separating claw (5) by the pick roller forward and backward movement mechanism (23), and the medium (1) is fed out again. .