JP2006327797A - Paper separating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper separating device capable of easily adjusting an overlapped amount between a feed roller and a gate roller. <P>SOLUTION: This paper separating device comprises a first carrying roller 23 delivering paper sheets, one by one, by a frictional force produced by coming into contact with the stacked plurality of paper sheets, a pressing plate pressing the paper sheets against the first carrying roller at a predetermined pressure, a plurality of second carrying rollers 24 installed in the axial direction to carry the paper sheets delivered by the first carrying roller to the downstream side, and a non-rotating roller installed slightly overlappingly with the second carrying rollers. A third carrying roller is rotatably installed between the second carrying rollers, and the non-rotating roller is brought into contact with the third carrying roller to determine the overlapped amount of the non-rotating roller with the second carrying rollers. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a paper sheet separating apparatus.

  As a conventional separation apparatus, for example, there is JP-A-9-180021. The paper sheet separating mechanism shown in this conventional example is a pressure contact in which a feed roller that imparts a conveying force to a paper sheet and a gate roller that imparts a conveying resistance force to the paper sheet to prevent double separation conveyance. This is a separation device called a separation system.

  As another separation apparatus, the feed roller and the gate roller are arranged in a nested state, overlap each other in the radial direction to form a gap, and an overlap separation method that uses the deformation force of the paper sheets (also called a gap method). Called).

Japanese Patent Laid-Open No. 9-180021

  Since the paper sheet separating mechanism of the pressure contact separation system of the conventional example can be fed out without deforming the paper sheet like the overlap type separating mechanism described later, paper sheets of various thicknesses and rigidity can be used. It is possible to pay out.

  However, since the feed roller and the gate roller are in a pressure contact state, the resistance force acting when the paper sheet enters the separating portion is large. Therefore, in order to push open this pressure contact state, the paper sheets stacked in a bundle are pushed with a large load, so that not only the paper sheets on the surface but also the paper sheets below it. There was a possibility that a plurality of paper sheets would be separated due to the added weight.

  In addition, the feed roller rotates while being in contact with the gate roller, so that the gate roller wears out, and the axial positions of the feed roller and the gate roller are fixed. There is a problem that it cannot be separated. Because of these problems, the pressure separation method is generally adopted for printers that use only a certain thickness of paper.

  Therefore, it is extremely difficult to adjust the overlap amount at the time of assembly in order to adopt the overlap method in which the gate roller overlaps between the feed rollers instead of the pressure separation method. Therefore, there is a problem that leads to an increase in manufacturing cost, and it is not suitable for a printer that requires low cost.

  An object of the present invention is to provide a paper sheet separating apparatus that can easily adjust the overlap amount of a feed roller and a gate roller.

  The object is to provide a first transport roller that feeds the paper sheets one by one by friction generated by contacting a plurality of stacked paper sheets, and a predetermined pressure on the first transport roller. A pressing plate for pressing the leaves, a plurality of second conveying rollers provided in the direction of the rotation axis for conveying the paper sheets fed by the first conveying roller to the downstream side, and the second conveying In a paper sheet separating apparatus including a non-rotating roller provided so as to slightly overlap the roller, a third transport roller is rotatably provided between the second transport rollers, and the third transport This is achieved by abutting the non-rotating roller against the roller to determine an overlap amount of the non-rotating roller with respect to the second roller.

  Further, the above object is achieved by the third conveying roller having a smaller diameter than the second conveying roller.

  Moreover, the said objective is achieved by shape | molding the said non-rotating roller with the flexible member.

  The above-mentioned object is achieved by forming the non-rotating roller with a flexible member and forming a hollow portion between the central portion and the outer surface of the non-rotating roller.

  The above object is achieved by bringing the non-rotating roller into pressure contact with the third transport roller.

  INDUSTRIAL APPLICABILITY The present invention can provide a paper sheet separating apparatus that can easily adjust the amount of overlap between a feed roller and a gate roller.

First, an automatic cash transaction apparatus such as a financial institution to which the present invention is applied will be described.
FIG. 1 is a perspective view showing an example of an automatic teller machine.
In FIG. 1, an automatic cash transaction apparatus 90 includes banknote handling means 91 that processes banknotes, a coin handling means 92 that processes coins, and a customer inputs information necessary for a transaction to the automatic cash transaction apparatus 90. A display operation unit 93 for displaying operation guidance and transaction items to the customer from the automatic teller machine 90, a passbook handling means 94 for processing a passbook entry, etc., and reading of information such as a cash card as a transaction medium of the customer A card slip handling means 95 for performing writing and transaction statement slip issuing processing, a guidance display section 96 for displaying transaction items, and a control section 97 for controlling each transaction means. Paper sheets handled by the automatic cash transaction apparatus 90 are banknotes, and the banknote handling means 91 is provided with a banknote separating apparatus for supplying banknotes described below into the apparatus.

FIG. 2 is a side view of the main part of the banknote separating apparatus.
In FIG. 2, first, the banknotes 1 loaded on the guide 27 are moved by moving the push plate 26 toward the pickup roller 22 (first transport roller) (in the direction of arrow A) by a motor (not shown). Press with a predetermined pressing force. This pressing force generates a frictional force between the pickup roller 22 and the bill 1. The pickup roller 22 rotates in the direction of arrow B, and one or a plurality of leading banknotes in a bundle of banknotes are fed out by the friction portion 22a. The fed banknote 1 arrives at a separation unit A composed of a feed roller 23 (second transport roller) and a gate roller 24 (non-rotating roller). The banknote 1 that has reached the separation section A is pressed against the feed roller 23 and the gate roller 24. When the feed roller 23 is rotated in the direction of arrow C in this state, the frictional force between the friction section 23a and the banknote is generated. The banknote is fed out as it is, and the banknote in contact with the stopped gate roller 24 stays, so that only one banknote is separated and conveyed in the direction of arrow 2.

  Now, the feed roller 23 and the gate roller 24 of the banknote separator described in FIG. In order to compare and explain this overlap method and the pressure contact method mounted on a printer or the like, FIG. 3 shows the pressure contact method, and FIG. 4 shows the overlap method.

(A)-(c) of FIG. 3 is the schematic explaining the structure of a press-contact system.
FIGS. 4A and 4B are schematic diagrams for explaining the overlap method.
In FIG. 3, since the spring 25 is installed on the gate roller shaft 24s, the gate roller 24 and the feed roller 23 are in a pressure contact state. When a bill enters between the gate roller 24 and the feed roller 23, the bill 1 is pushed down against the spring force of the spring 25 as shown in FIG. Since the banknote 1 is pressed against the feed roller 23 and the gate roller 24, the banknote 1 is separated as shown in FIG.

  In this method, as described above, since the feed roller and the gate roller are in a pressure contact state, in order for the sheet to enter between the feed roller and the gate roller, the pressure contact relationship must be expanded. It can be seen that the separation power of the paper must be increased accordingly. Therefore, although only the top sheet of the sheet bundle is desired to be separated, the pressing force is strong, so that the second and third sheets are separated at the same time.

  On the other hand, in FIG. 4, the gate roller 24 enters a gap between a plurality of feed rollers 23 (expressed as overlap in this specification). This is because a gap is made between the feed roller 23 and the gate roller 24 to make it easier for the banknote to enter, and to make the banknote more rigid.

  That is, if a gap is provided between the feed roller 23 and the gate roller 24, the pick-up roller 22 requires less pressing force when separating only the first one of the bills 1, so that the second bill is fed out. It is something that won't happen. In some cases, double separation may occur due to external factors, but in reality, the separation is performed with almost no problem.

  By the way, it is conceivable to employ an overlap method that does not cause double separation in the separation shown in FIG. 3, but a complicated adjustment mechanism and process are required for the overlap amount management, and the roller is used. However, there is currently no printer that employs the overlap method for a printer that requires a high production cost and requires a low price.

  Therefore, in the embodiment described below, the configuration of the separation device that facilitates the setting of the overlap amount and can handle paper sheets other than banknotes having different thicknesses is described.

A first embodiment of the present invention will be described with reference to FIG.
5A, 5B, and 5C are a perspective view, a side view, and a front view, respectively, of a feed roller and a gate roller provided with an embodiment of the present invention.
In FIG. 5A, a plurality of feed rollers 23 are attached to the rotating shaft 23c. A part of the outer periphery of the feed roller 23 is provided with a high friction coefficient portion 23a made of rubber or the like, and paper sheets are separated by the high friction coefficient portion 23a. Between the plurality of feed rollers 23, an overlap amount reference roller 23b having a diameter smaller than that of the feed roller 23 and capable of rotating at least in the separation direction is attached. A non-rotating gate roller 24 is disposed so as to be in pressure contact with the freely rotating overlap amount reference roller 23b.

  In FIG. 5B, when the feed roller 23 rotates counterclockwise as indicated by an arrow, the banknote (not shown) and the high friction portion 23a of the feed roller 23 are separated by rubbing, while the gate does not rotate. The superposed banknotes hitting the roller 24 are not separated.

  FIG. 5C is a front view of FIG. 5B, and it can be seen that the gate roller 24 and the overlap amount reference roller 23b are in contact with each other.

  According to the present embodiment, when the gate roller 24 is wrapped between the feed rollers 23 in the manufacturing stage of the separating apparatus, the overlap amount reference roller 23b diameter is set to a diameter of a predetermined depth. There is an effect that it can be easily set only by abutting against the overlap amount reference roller 23b. In this embodiment, the overlap amount is set to 0.32 mm.

  By the way, after the overlap amount of the gate roller 24 is set, the overlap amount reference roller 23b may be removed. However, by attaching it as it is, there is an effect of preventing the gate roller 24 from being worn.

  That is, since the paper sheets always pass while contacting a specific portion of the gate roller 24 that does not rotate, the problem that the specific portion is worn is unavoidable. Therefore, if the amount of wear of the gate roller 24 is predicted in advance and the gate roller 24 is pressed against the overlap amount reference roller 23b by the amount of wear, even if the gate roller 24 is worn, Because the contact position does not change on paper

FIG. 6 is a perspective view of the gate roller.
In FIG. 6, as described above, the automatic teller machine installed in a financial institution or the like cannot flow paper sheets other than banknotes, so the gate roller 24 is formed of a hard material. However, considering the versatility of automatic teller machines in the future, it is expected that paper sheets other than banknotes (for example, overseas banknotes, stock certificates, securities, etc.) will be handled. In that case, since the thickness and hardness of the paper sheets are different, if the gate roller 24 is hard, some paper sheets may not be compatible with the hard gate roller 24. Therefore, in this embodiment, as shown in FIG. 6, the gate roller 24 is formed of a flexible member so as to be easily bent according to the material and thickness of the paper sheet. Reference numeral 24a denotes a member that connects the support portion 24b and the outer peripheral portion 24c.

  Thereby, for example, the connecting member 24a in which the thick paper sheet contacts the outer peripheral portion 24c of the gate roller 24 can be bent to absorb the thickness. Note that a foamable member may be used as the soft material.

FIGS. 7A and 7B are views showing a state in which bills are separated by the separation mechanism.
In Fig.7 (a), the banknote 1 which plunged into the isolation | separation part has deform | transformed the banknote 1 into the waveform.

  In FIG. 7B, since the flexible gate roller 24 shown in FIG. 6 is deformed into an oval shape, even if a thick paper sheet enters the separation portion, it can smoothly enter. Moreover, since this gate roller 24 has moderate flexibility, it is possible to separate banknotes having various thicknesses. Moreover, when a banknote deform | transforms like Fig.7 (a), it is possible to isolate | separate a banknote similarly to the above-mentioned overlap system.

  As described above, in the separation apparatus according to the present invention, when the apparatus is assembled, the overlap amount between the feed roller 23 and the gate roller 24 is determined by contacting the roller 23b whose gate roller 24 is freely rotatable. Fine adjustment is not necessary. Further, since the overlap amount reference roller 23b facing the gate roller 24 is also rotated, wear of the gate roller 24 can be suppressed. Furthermore, since the gate roller 24 is made of a flexible member, it can be separated in correspondence with bills of any thickness.

It is a perspective view which shows an example of the automatic teller machine which is an example of application of this invention. It is a figure which shows the structure and separation operation | movement of the banknote separation apparatus 2 concerning this invention. It is a figure showing the conventional press-contact separation system. It is a figure showing the conventional overlap separation system It is a figure showing the 1st Example of this invention. It is a figure showing the gate roller in this invention. It is a figure which shows a mode that a banknote is isolate | separated by the separation mechanism of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 90 ... Automatic cash transaction apparatus, 91 ... Bill handling means, 92 ... Coin handling means, 93 ... Display operation part, 94 ... Passbook handling means, 95 ... Card voucher handling means, 96 ... Guidance display part, 97 ... Control part, 1 ... bill, 2 ... bill separator, 22 ... pick-up roller, 23 ... feed roller, 23a ... transport roller, 23b ... overlap amount reference roller, 24 ... gate roller, b ... direction of movement of the push plate during bill separation, b ... rotation direction of the pickup roller at the time of banknote separation, c ... rotation direction of the feed roller at the time of banknote separation, and 2 ... banknote separation direction.

Claims (5)

A first transport roller that feeds the paper sheets one by one by friction generated by contacting a plurality of stacked paper sheets, and presses the paper sheets with a predetermined pressure against the first transport roller A plurality of second conveying rollers provided in the direction of the rotation axis and a small amount relative to the second conveying roller in order to convey the sheet fed by the pressing plate and the first conveying roller to the downstream side. In a paper sheet separating apparatus provided with a non-rotating roller provided to overlap with
A third conveyance roller is rotatably provided between the second conveyance rollers, and the non-rotation roller is brought into contact with the third conveyance roller so that the non-rotation roller overlaps the second roller. A paper sheet separating apparatus characterized in that is determined. In the paper sheet separating apparatus according to claim 1,
The paper sheet separating apparatus, wherein the third transport roller has a smaller diameter than the second transport roller. In the paper sheet separating apparatus according to claim 1,
A paper sheet separating apparatus, wherein the non-rotating roller is formed of a flexible member. In the paper sheet separating apparatus according to claim 3,
A paper sheet separating apparatus, wherein the non-rotating roller is formed of a flexible member, and a hollow portion is formed between a central portion and an outer surface of the non-rotating roller. In the paper sheet separating apparatus according to claim 1 or 3,
A paper sheet separating apparatus, wherein the non-rotating roller is brought into pressure contact with the third conveying roller.

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