JPS628377B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for handling paper sheets stored in a hopper in, for example, an automatic teller machine or an optical reader.
This invention relates to a paper sheet separating device that separates paper sheets one by one.

In a mechanism that separates and takes out paper sheets stored in a hopper one by one, the method for separating paper sheets includes:
There are various methods such as a method using frictional force and a method using vacuum suction force.

Fig. 1 shows a method in which paper sheets are separated by a reversing belt, which is one of the methods that utilizes frictional force.Banknotes 2 stored in an upright position in a hopper 1 are moved to a feed roller by a pick-up roller 3. 4 and
The feed roller 4 is supplied to a gate section that is configured of a reversing belt 5 that is in contact with the feed roller 4 and rotates in the opposite direction to the feed roller 4 . The feed roller 4
The banknotes 2 fed between the feed roller 4 and the reversing belt 5 are sent toward the rear conveyance path by a friction member attached to a predetermined location on the outer peripheral surface of the feed roller 4.

At this time, since the friction coefficient of the friction member of the feed roller 4 is set higher than the friction coefficient of the reversing belt 5, the feeding of the banknotes 2 does not stop due to the reversing of the reversing belt 5.

Such a mechanism is such that when a plurality of banknotes 2 are simultaneously fed between the feed roller 4 and the reversing belt 5 because the reversing belt 5 is reversing, the banknotes 2 on the reversing belt 5 side are Sequential hoppa 1
The force that pushes it back to the side actively acts. For this reason,
It has an extremely high ability to separate paper sheets one by one, and is characterized by high reliability in separating paper sheets.

However, on the other hand, since the belt 5 must be reversed, a drive device 6 such as a motor is required to drive the belt 5. As a result, there has been a problem in that it is difficult to use the reversing belt mechanism in devices that require small size and low cost.

In addition, the reversing belt 5 is normally connected to the feed roller 4.
The rotation speed of the reversing belt 5 relative to the feed roller 4 is extremely low compared to the peripheral speed of the feed roller 4.
The winding angle and its pressing force mainly contribute to the separation performance. Therefore, if the material, wrapping angle, and pressing force of the reversing belt 5 are made appropriate, sufficient performance can be obtained even when the reversing belt 5 is stopped. In this case, if the portion of the belt 5 in contact with the feed roller 4 remains constant, performance deterioration such as rubber wear and adhesion of paper dust etc. is likely to be accelerated, so it is desirable that the contact portion be renewed as appropriate. In this respect, the reversing belt mechanism has a great advantage, but as mentioned above, it has the problem of being complicated and expensive.

The purpose of the present invention is to provide a highly reliable paper sheet separation device that eliminates the complexity of the mechanism of the conventional reversing belt system and utilizes the advantages of the reversing belt system with a simple mechanism. That is.

That is, the present invention is characterized by incorporating a one-way clutch in the pulley that supports the reversing belt that comes into contact with the feed roller, thereby preventing the reversing belt from rotating in the same direction as the feed roller, and stopping the rotating feed roller. At this time, the rotational energy accumulated in the elastic elements such as the drive belt system in the direction of taking out the paper sheets is transmitted to the reversing belt via the feed roller, so that the contact position of the reversing belt with the feed roller is sequentially updated. This is what I did.

An embodiment of the present invention will be described below with reference to FIG.

FIG. 2 shows the device of the present invention applied to an automatic teller machine, with the depositor inserting a banknote into the hopper, and the same numbers as in FIG. 1 indicate the same parts.

The reversing belt 7 that is in contact with the feed roller 4 is
Pulley 8 with a friction member such as rubber attached to its circumferential surface
The pulley 8 is attached to its rotating shaft 9 via a one-way clutch 10. Thereby, the pulley 8 can be configured to rotate only in the direction opposite to the rotation (forward direction) of the feed roller 4. On the other hand, feed roller 4
is driven by a motor via an elastic member such as a timing belt. Normally, when the belt system stops, the energy stored in the form of belt elongation during driving is released, so the feed roller 4 is Reverse as shown by the arrow in Figure 2.
When the feed roller 4 reverses, the reversing belt 7 moves in the direction of rotation of the one-way clutch 10.
When the next sheet is taken out, a new portion of the reversing belt 7 that is in contact with the feed roller 4 appears.

Further, when the feed roller 4 is rotating in the forward direction, the pulley 8 does not rotate in the forward direction, and since a friction member is attached to the surface of the pulley 8, the reversing belt 7 is stopped. Therefore, by optimizing the wrapping angle and pressing force of the reversing belt 7 and the feed roller 4, it is possible to apply a sufficient decomposing force to the sheet.

Next, the operation of the device of the present invention will be explained.

First, among the banknotes 2 stored in the hopper 1, the frontmost banknote 2 that is in contact with the pick-up roller 3 is fed downward by the pick-up roller 3, and separated by being engaged with the feed roller 4 and the reversing belt 7. sent to the department.

The feed roller 4 operates in cooperation with the pick-up roller 3, and uses its friction member to send out the fed banknotes 2 to the rear conveyance section.

At this time, if a plurality of banknotes enter the separating section at the same time, the reversing belt 7 acts with an appropriate frictional force to prevent the banknotes 2 from being sent out.

While the banknotes 2 in the hopper 1 are being fed out and separated and conveyed, the reversing belt 7 is connected to the one-way clutch 10.
However, when there are no banknotes 2 in the hopper 1 and the drive of the feed roller 4 is stopped, the feed roller 4 is reversed by the energy stored in the elastic element of its drive system.

When the feed roller 4 is reversed, the reversing belt 7 is reversed by the frictional force between the feed roller 4 and the reversing belt 7, and a new portion comes into contact with the feed roller 4 when taking in the next banknote.

According to the present invention, the reversing mechanism for the reversing belt that was conventionally required is not required, and the device can be made more compact. The parts of the upper belt that come into contact with the feed roller are gradually renewed, extending the life of the belt. Further, various parts such as a motor and its driving electric circuit are not required, and the cost can be reduced. Furthermore, the reduction in the number of parts and the long-term reliability of the mechanism are significantly improved, which brings about remarkable effects.

[Brief explanation of the drawing]

Figure 1 is a schematic cross-sectional view of a conventional paper sheet separation device.
FIG. 2 is a schematic cross-sectional view of an embodiment of the paper sheet separation device of the present invention. 1... Hopper, 2... Bill, 3... Pick up roller, 4... Feed roller, 7... Reversing belt, 8...
Pulley, 9...rotating shaft, 10...one-way clutch.

Claims (1)

[Scope of Claims] 1. A paper sheet separating device that separates paper sheets 2 stored in a hopper 1 one by one using a reversing belt 7 consisting of a feed roller 4 and a pre-rubbing member that comes into contact with the feed roller 4, comprising: A pulley 8 on which the reversing belt 7 is stretched has a friction member attached to its circumferential surface and a support shaft 9.
A one-way clutch 10 is interposed between the feed roller 4 and the one-way clutch 10 that allows the feed roller 4 to rotate only in the opposite direction to the paper sheet take-out direction, and is released when the feed roller 4 stops. A paper sheet separating device characterized in that the rotational energy in the direction of taking out the paper sheets is transmitted to the reversing belt 7 via the feed roller 4.