JPH0546845U - Paper transport mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the belt from coming off due to the occurrence of a jam and to prevent the belt from being cut after the belt comes off. [Structure] Grooves 32 are formed on both sides of a pulley 31 around which a conveyor belt 18 is wound, and a flange 33 is formed on the outside thereof.
To provide. The width of the groove 32 is larger than the thickness of the belt 18, and the outer diameter of the flange 33 is set to be larger than the outer diameter of the pulley 31 and smaller than the diameter when the conveyor belt 18 is wound.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a paper sheet transport mechanism that transports paper sheets such as banknotes by a transport belt in an automatic teller machine or the like.

[0002]

[Prior Art]

 Conventionally, a transport mechanism for transporting paper sheets by a transport belt has been used in an automated teller machine or the like, and the transport mechanism in the automated teller machine will be described below.

FIG. 3 is a schematic side view showing the inside of the automatic transaction apparatus, which is disclosed in Japanese Patent Application Laid-Open No. 02-27 8396.

In the figure, 1 is a bill deposit / withdrawal device, 2 is a customer service port, and the customer service port 2 is for a customer to take in and out paper money.

Reference numeral 3 is a discrimination unit for discriminating and detecting authenticity, damage, front and back, running state, denomination, number of bills, etc. 4 is arranged on the front side of bills which are discriminated by the discrimination unit 3 as the back side. Front and back assortment department.

Reference numeral 5 is a batch cassette for storing replenished bills or collected bills, 6 is a reject cassette for storing reject bills 3, and 7 to 9 are denomination-type cassettes for storing payout bills so that they can be paid out.

Reference numeral 10 denotes a depositing / dispensing unit arranged above the denomination cassettes 7-9, which is a banknote stacking unit 11-13 for depositing money into the denomination cassettes 7-9 and bills from the denomination cassettes 7-9. It is equipped with bill separating units 14 to 16 for feeding out.

Reference numeral 17 denotes a transport path for transporting banknotes to each of these mechanisms, and the banknotes are transported along the transport path 17 by the automated teller machine described below.

Since the transport path 17 is installed over the entire area of the automatic teller machine, the conventional example will be described here by removing the portion C in FIG.

FIG. 4 is a side view of an essential part showing the carrying mechanism of the part shown in FIG. 3C.

In the figure, 18 is a conveyor belt, 19 and 20 are switching blades, 21, 22 and 23 are pulleys, and 24 is a drive shaft for driving the conveyor belt 18 by inputting power to a gear (not shown).

With the above configuration, when the driving force is applied to the drive shaft 24 in the direction of arrow A, the conveyor belt 18 also rotates in the direction of arrow B, and the bills are conveyed.

[0013]

[Problems to be solved by the device]

 However, in the general banknote transfer technology including the above-described conventional technology, the transfer belt is extended by about 4% from the natural state, depending on the type of transfer belt, in order to sufficiently transmit the rotational force without slipping. It is mounted on the device in the state.

[0014] Therefore, during bill transportation, there is a case where only bills stop due to an abnormality such as bill tearing and bill folding, and the bills become messy (hereinafter referred to as bill jam). At this time, the bills suddenly stop. However, the motor driving the conveyor belt cannot be stopped suddenly, and the conveyor belt is driven and rotated when a bill jam occurs, so the conveyor belt comes off or comes off. After that, it is further rotated and the belt is cut, causing the equipment to go down.

As a result, there is a problem that it takes a long time to recover and the operation efficiency of the device is lowered.

FIG. 5 is a side view showing an operation mode after a jam occurs in the conventional example of FIG.

When a banknote jam occurs, a tension force acts on the conveyor belt 18 with respect to the jammed banknote 25 in the range of the hatched portion D of the conveyor belt 18 shown in FIG. 18 grows. In this way, the range of D is extended, so that the other portion of the conveyor belt 18 is slackened.

There are the following modes of operation of the conveyor belt 18 when a jam occurs, which will be described below.

First, as the first mode, when abnormal tension is applied to the conveyor belt 18, it escapes in a direction to mitigate the abnormal tension of the conveyor belt 18, and the conveyor belt 18 is detached from the narrow pulley 21. Occur. However, if the device stops during this detachment, the transport belt 18 is kept in a state of being slightly detached.

Next, as a second mode, when abnormal tension is applied to the conveyor belt 18 and this abnormal tension exceeds the allowable limit of the conveyor belt 18, cutting occurs.

Further, as a third form, a form in which the first and second forms are combined, that is, a case where cutting occurs after the belt is removed.

In the above-mentioned conventional example, only one conveyor belt is shown, but the same problem occurs even when two or three conveyor belts are used.

Here, as the forms of belt detachment and belt cutting, the first and third forms are common, and the present invention is intended to prevent the belt detachment of the first and third forms.

That is, in view of the above problems, the present invention obtains a configuration for restricting the conveyor belt that is about to come off, and prevents the belt from coming off after a jam and the device from being cut off after the belt comes off. However, it is an object of the present invention to provide a low cost and highly efficient paper sheet transport mechanism.

[0025]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a groove formed on both sides of a pulley and having a width wider than the thickness of a conveyor belt, and an outer diameter formed outside the groove that is larger than the outer diameter of the pulley. A flange portion smaller than the thickness of the belt is provided.

[0026]

[Action]

 With the above configuration, according to the present invention, when the conveyor belt is to be detached from the pulley following the occurrence of the jam, the conveyor belt abuts the flange portions on both sides of the pulley, so that the belt detachment can be prevented.

Further, since the detachment of the belt is prevented, it is not necessary to further rotate the conveyor belt after the conveyor belt is detached to cut the conveyor belt.

[0028]

【Example】

 An embodiment according to the present invention will be described below with reference to the drawings. Note that elements common to the drawings are given the same reference numerals.

FIG. 1 is a front view of a main part showing an embodiment according to the present invention, and FIG. 2 is a front view showing a pulley of the present embodiment. In FIG. 1, among the elements of the conventional transfer mechanism shown in FIG. Elements not relevant to the embodiment are omitted.

In FIG. 1, the conveyor belt 18 is wound around a pulley 31, a pulley 22 and a pulley 23. Grooves 32 are formed on both sides of the pulley 31, and flanges 33 are formed on the outer sides thereof. Here, the dimensional relationship between the groove portion 32 and the flange 33 will be described with reference to FIG.

In FIG. 2, the width W of the groove 32 is set larger than the thickness T of the conveyor belt 18 (W> T 3). Further, the outer diameter L ₁ of the central portion (portion around which the conveyor belt 18 is wound) 31a of the pulley 31 is set smaller than the outer diameter L ₂ of the flange 33 (L ₁ <L ₂ ), and the thickness of the conveyor belt 18 is further set. The relationship with T is set so that L ₂ −L ₁ <2T. As a result, when the conveyor belt 18 is wound around the central portion 31 a of the pulley 31, the conveyor belt 18 is located farther from the center of the pulley 31 than the flange 33, and the bills (paper sheets) The transport force does not decrease during transport.

In the paper sheet transporting mechanism of the present embodiment having the above structure, the driving force is transmitted to the drive shaft 24, the pulley 31 rotates, and the transporting belt 18 also rotates. This makes it possible to carry bills.

When a jam occurs during the transportation of bills and the conveyor belt 18 tries to come off from the pulley 31, the end surface 18 b of the conveyor belt 18 passes through the groove 32 and hits the inner wall 33 a of the flange 33. This prevents the conveyor belt 18 from falling off.

When the degree of banknote jam is severe and the force of the conveyor belt 18 attempting to come off is large, the end surface 18 b of the belt 18 also abuts the inner surface wall 33 a of the flange 33, but the conveyor belt 18 is not tensioned. Therefore, the end surface 18a of the belt 18 enters the groove 32 as shown in FIG. Therefore, the conveyor belt 18 does not pass over the flange 33 and can be prevented from coming off. When the end surface 18a of the conveyor belt 18 enters the groove portion 32, the end surface 18a enters in a state of being rolled up. Therefore, it is preferable that the width W of the groove portion 32 is set to be twice the thickness T of the conveyor belt 18 or more. If it is larger than the length T, it is possible to prevent the belt from coming off.

In FIG. 1, grooves and flanges are not formed on the other pulleys 22 and 23 around which the conveyor belt 18 is wound, but this is because these pulleys 22 and 23 are wider than the pulley 31. This is because the conveyor belt 18 is unlikely to come off because of the large size, but it goes without saying that the groove portion 32 and the flange 33 similar to the pulley 31 may be formed on these pulleys 22 and 23.

[0036]

[Effect of the device]

 As described above in detail, according to the present invention, since the groove portion is formed on both sides of the pulley around which the conveyor belt is wound, and the flange is provided on the outer side thereof, it is possible to prevent the belt from being detached when the paper sheet is jammed. ..

Further, by doing so, it is possible to prevent the device from going down due to the cutting of the belt after the belt is detached, and it is possible to provide a paper sheet transport mechanism that improves the operation efficiency of the device at low cost.

[Brief description of drawings]

FIG. 1 is a front view of an essential part showing an embodiment according to the present invention.

FIG. 2 is a front view showing a pulley of the embodiment.

FIG. 3 is a schematic side view showing the inside of the automatic transaction device.

FIG. 4 is a side view of an essential part showing the carrying mechanism of the part C in FIG. 3;

FIG. 5 is a side view showing an operation mode after a jam has occurred.

[Explanation of symbols]

 18 Conveyor Belt 31 Pulley 32 Groove 33 Flange

Claims (1)

[Scope of utility model registration request] 1. A conveyor belt is held by a plurality of pulleys so as to form a predetermined belt route with a predetermined expansion rate,
In a paper sheet transport mechanism that drives a transport belt by the rotation of the pulley to transport paper sheets, a groove portion formed on both sides of the pulley and having a width wider than the thickness of the transport belt, and a groove formed outside the groove portion. A paper sheet transport mechanism comprising a flange portion having a diameter larger than the outer diameter of the pulley and a difference smaller than the thickness of the conveyor belt.