JPS636110Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a device that separates and feeds accumulated paper sheets one by one in a paper sheet counting machine, and also corrects the inclination of the fed paper sheets. .

Conventionally, paper sheet counting machines, such as banknote deposit machines,
It is configured as shown in the figure. That is, a banknote bundle in which banknotes M of various denominations may be mixed is loaded into the banknote dispensing section 1, and the banknote M is loaded into the banknote dispensing unit 1 by the dispensing roller 2.
The banknotes M are sent between the delivery roller 3 and the friction member 4 to be separated one by one, and are sent to the discrimination section 6 via intermediate rollers 5, 5, where the authenticity and denomination of the banknotes M are determined. If there is no abnormality in the result, the banknotes are accumulated in the intermediate pool section 11 via the fork 8, the belt 9, and the accumulation vehicle 10 operated by the solenoid 7. When the discrimination of the banknotes is completed, the intermediate pool section 11 is indicated by an arrow. It was designed to open like this, take out the banknotes, and store them in a safe.

On the other hand, when the discrimination section 6 detects an abnormal phenomenon of the banknotes M (counterfeit banknotes, double stacking, etc.),
A fork 8 is switched by a solenoid 7 to feed the banknotes M into a rigid box 12 so that they are stored separately.

In addition, in order to reliably switch the conveyance path of the banknotes M that are continuously conveyed in this way from, for example, the intermediate pool section 11 to the redirect box 12, it is necessary to send each banknote M one by one to the discriminating section 6. In FIG. 1, when the feeding roller 2 feeds the banknotes M one by one between the feeding roller 3 and the friction member 4, if the banknotes M stick to each other and two sheets overlap, the feeding The banknote M that is in contact with the roller 3 is fed out, and the banknote M that is in contact with the friction member 4 remains approximately at that position, causing a shift in the two stacked banknotes M. , intermediate roller 5
A method is adopted in which the information is sequentially sent to the discriminating section via the .

However, in such a conventional example, when the long side (or short side) of the banknote M goes from being orthogonal to the conveyance direction to being extremely inclined, the denomination discrimination accuracy of the discriminating unit 6 decreases and the discrimination becomes difficult. There was a risk of becoming incapacitated. Such a phenomenon can occur frequently when there are many variations in the frictional force and stiffness between bills, such as in circulating banknotes, and there has been a need for a function to correct the inclination of banknotes during conveyance.

This idea was made in consideration of the above-mentioned circumstances, and the central part of the paper sheet and its both sides are moved between the first conveying roller, which is spaced apart in the conveying direction, and the circumferential speed lower than that of the first conveying roller. It is an object of the present invention to provide a feeding device that automatically corrects the tilted state of paper sheets by transporting them with a rotating second transport roller.

This invention will be explained below based on an embodiment shown in FIGS. 2 to 5.

The illustrated embodiment is an application of this invention to a dispensing device such as a banknote deposit machine, and corresponds to the portion shown by the chain line in FIG. What is indicated by the symbol S in the figure is a paper sheet (for example, a banknote), and this paper sheet S is attached to the sliding plate 2.
Paper sheet holding plate 2 supported movably along 1
2 toward the feed-out roller 23 side, and is held between the feed-out roller 23 and the sheet holding plate 22, and the eccentric feed-out roller 23 Each time the sliding plate 21 is rotated once in the direction of the arrow in FIG. 2 by the drive source, the paper sheet S is sent out from the tip of the sliding plate 21. Note that the reference numeral 24 in the figure is a banknote detector for detecting the presence or absence of paper sheets S.

At the position facing the tip of these sliding plates 21,
A plurality of delivery rollers 31 that are brought into contact with one surface of the paper sheets S, and a plurality of delivery rollers 31 that are brought into contact with the other surface of the paper sheets S.
A set of friction members 32 is provided, and the sliding coefficient between the delivery roller 31 and the paper sheet S is required to be larger than the sliding coefficient between the paper sheets S, and the friction member 32 is Member 32 and paper sheets S
It is a condition that the sliding coefficient between the two sheets is larger than the sliding coefficient between the paper sheets S.
The friction member 32 includes a guide member 34 that guides the paper sheet S by forming a gap along the outer circumferential direction of the feed roller 31 and has a notch 33 that faces the outer circumferential surface of the feed roller 31; 34 rotatably supported with respect to the mounting frame 35
A brake member 37 is rotatably attached to the rotation shaft 36, inserted into the notch 33 of the guide member 34, and faces the outer peripheral surface of the delivery roller 31.
and a spring 38 that is attached between the mounting frame 35 and the brake member 37 and biases the brake member 37 in the direction of contacting the delivery roller 31.

Further, power is transmitted to the delivery roller 31 from a drive source (not shown) via a drive shaft 39, and the delivery roller 31 and the friction member 32 contact the delivery roller 31 in the sheet delivery direction. A pressure roller 40 is provided and rotated. In addition,
Reference numeral 41 is a spring that presses the pressure roller 40 against the delivery roller 31.

On the other hand, the one indicated by the reference numeral 51 supports the drive shaft 39 and also has the drive shaft 3 attached to a fixed part (not shown).
These support plates 51, 5 are rotatably attached around the same axis as the axis of 9.
A shaft 52 is attached to the tip of the shaft 5.
2 has a first conveyance roller 53 at its center and guide rollers 54, 54 rotatably attached to both sides of the first conveyance roller 53, respectively. Drive rollers 55 are arranged between the first conveyance roller 53 and the guide roller 54 so as to sandwich the paper sheets S, and these drive rollers 55 strongly pinch the paper sheets S between them and the first conveyance roller 53. In addition, the sheet S is held loosely or with a gap between the sheet S and the guide roller 54, and is rotated integrally by the first rotating shaft 56. Also, the first
The required distance in the conveying direction of the conveying roller 53 (sheet S
A shaft 57 is rotatably supported at a remote position (with a pitch smaller than the dimension in the transport direction), and a guide roller 58 is attached to the shaft 57 approximately in the center, and second transport rollers 59, 59
is installed. These two second conveyance rollers 59, 59 are arranged parallel to each other with respect to the conveyance tangent direction of the first conveyance roller 53 and in contact with the vicinity of both width ends of the paper sheet S in the conveyance direction. Further, drive rollers 60 are disposed between the guide roller 58 and the two second conveyance rollers 59, 59 so as to sandwich the paper sheet S, and these drive rollers 60
The second rotating shaft 61 strongly pinches the paper sheet S with the second conveying roller 59, and also pinches the paper sheet S weakly or with a gap between the guide roller 58 and the second rotating shaft 61.
At this time, the circumferential speed of the second conveyance roller 59 is set to be slightly slower than the circumferential speed of the first conveyance roller 53.

Further, both arm plates 63, 63 are connected to appropriate positions of the support plates 51, 51 via rotation pins 62.
is rotatably attached, and both arm plates 6
A rod-shaped handle 64 is integrally attached between the tips of the rollers 3 and 63 for lifting the first conveying roller 53 attached to the support plate 51 and checking for jams in paper sheets S. The arm plates 63, 63 near the handle 64 have an engaging piece 65 having a notch (or elongated hole) along the length direction of the arm plate 63.
are integrally attached, and the engaging piece 65 is removably supported by a pin (not shown) for positioning.

Furthermore, a spring 66 is attached between the support plate 51 and the arm plate 63 as shown in FIG.
In other words, the first conveying roller 53, guide roller 54, etc. attached to the support plate 51 are bent so as to deepen the bending degree of the straight line connecting 9, the rotation pin 62, and the pin on which the engaging piece 65 is supported, respectively. It acts to rotate downward in the figure.

Next, the first and second conveyance rollers 53, 59
Guide rollers 54, 58, drive rollers 55, 60
Explain the relative relationships such as. As mentioned above, the first conveyance roller 53 is in strong contact with the drive roller 55 via the sheet S, and the contact between the guide roller 54 and the drive roller 55 is weak (see FIG. 3). The paper sheet S fed into the first conveying roller 53 is supported almost at the center and is sent in the direction of arrow A in FIG. At this time, the paper sheet S is slightly inclined with respect to the conveyance direction, and the fourth
As shown in the figure, if the paper sheet S is sent to the next two second conveyance rollers 59, 59 which are in strong contact on both sides, one side of the paper sheet S will be transferred to the second conveyance roller 59.
By contacting with the transport rollers 53, 5,
The slope is corrected as described below in response to the circumferential velocity difference of 9.

That is, in FIG. 5, after the sheet S contacts the second conveyance roller 59 on the right side in the conveyance direction while being inclined at an angle θ ₁ with respect to the direction perpendicular to the conveyance direction, both second conveyance rollers Let the conveyance distance of the paper sheet S at each roller 53, 59, 59 position until contacting the rollers 59, 59 be d ₁ , d ₂ , d ₃ , and v ₁ =
Assuming av ₂ (a constant of a > 1, the second conveyance roller 59 is slower as described above), d ₃ /d ₁ =V ₁ /V ₂ =a ∴d ₃ =ad ₁ ...(1) , d ₃ is the distance between the center of d ₁ and d ₂ , so d ₃ = 1/2 (d ₁ + d ₂ )...(2) From (1) and (2), ad ₁ = 1/2 (d ₁ + d ₂ ) ∴ d ₂ = (2a-1) d ₁ ...(3) Here, the axis 57 of the paper sheet S being conveyed diagonally
When the feeding angle is θ ₁ (0≦θ ₁ <π/2) and the feeding angle is θ ₂ , and the distance between the centers of both rollers 59 and 59 is D, tanθ ₁ = d ₁ /D ∴d ₂ = D tanθ ₁ …(4) From (3) and (4), D tanθ ₁ = (2a−1) d ₁ ∴d ₁ = D/2a−1・tanθ ₁ …(5) Also, tanθ ₂ = d ₁ /D ∴tanθ ₂ = 1/2a-1・tanθ ₁ ...(6) θ ₂ =tan ^-1 (1/2a-1tanθ ₁ ) ...(7) Since a>1, 1/2a-1<1 ∴tanθ ₂ <tanθ ₁ ∴θ ₂ <θ ₁ (∵0≦θ ₁ <π/2) In this way, the inclination of the paper sheet S is corrected. Further, as is clear from equation (7), when θ ₁ =0, θ ₂ =0. Also, for example, a=1.5,
If θ ₁ =10°, then θ ₂ ≒5°.

Furthermore, to further explain equation (7), if the second conveyance roller 59 is made extremely slower than the first conveyance roller 53, the effect of correcting the inclination of the paper sheet S increases, but the value of a is Limited (second conveyance roller 5
It goes without saying that the circumferential velocity of the paper sheet 9 cannot be made zero), but it may be determined based on the number of tilt correction points, the expected condition of the paper sheets, etc.

On the other hand, by making the second conveyance roller 59 slightly slower than the first conveyance roller 53, the paper sheets S may become slack between the two conveyance rollers 53 and 59.
In order to absorb this slack, as shown in FIG.
A gap is provided between the group and the second transport roller 59 and drive roller 60 groups.

In the above-mentioned embodiment, the paper sheets S are pulled out by the direct contact of the feed roller 23, but the present invention is also applicable to other types of paper sheets S that are pulled out by a suction method. Of course it is.

As explained above, this invention has a first conveyance roller that grips the paper sheet approximately in the center and moves it in one direction, and a first conveyance roller that is spaced apart in the conveyance direction of the first conveyance roller and in a direction perpendicular to the conveyance direction. Two second conveyor rollers rotate at a peripheral speed lower than that of the first conveyor roller.
If the paper sheet is in an inclined state, the degree of inclination of the paper sheet can be reduced by the difference in the peripheral speed of both transport rollers, and the paper sheet can be transported normally. If it is, it is sent to the discrimination section while maintaining the same state, so the discrimination accuracy of the discrimination section can be improved. It has the effect of achieving the purpose and making it simple.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration explanatory diagram of a conventional banknote deposit machine,
Figures 2 to 5 show an embodiment in which this invention is applied to a dispensing device such as a banknote deposit machine. Partially sectional front view showing the condition, No. 4
The figure is a partially sectional front view showing the state of the second conveyance roller, and FIG. 5 is an explanatory view of the effect of correcting the inclination of paper sheets. S... Paper sheet, 31... Delivery roller, 32...
Friction member, 40... Pressure roller, 52... Shaft, 5
3...first conveyance roller, 54...guide roller,
55... Drive roller, 56... First rotating shaft, 57
... shaft, 58 ... guide roller, 59 ... second conveyance roller, 60 ... drive roller, 61 ... second rotating shaft.

Claims (1)

[Scope of utility model registration request] In the feeding device of a paper sheet counting machine that separates and feeds loaded stacked paper sheets one by one, the paper sheet comes into contact with approximately the center of the paper sheets that are separated and conveyed one by one and moves in one direction. a first conveyance roller, and a second conveyance roller provided at positions spaced apart from each other in a direction parallel to the axis of the first conveyance roller and in the conveyance direction, and spaced apart from each other in the axial direction; A feeding device for a sheet counting machine, wherein the second conveyance roller rotates at a peripheral speed lower than that of the first conveyance roller.