JPH0790938B2 - Paper counting machine - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet counting machine, and more particularly, to increasing the contact area between a separating roller and a paper sheet to improve the separating ability, and The present invention relates to a new improvement for minimizing damage.

b. Conventional Technology Conventionally, in a paper sheet counting machine for counting paper sheets such as banknotes, paper sheets, cards, etc., various methods have been proposed in order to improve the separating ability for each paper sheet, A typical one among them is as shown in FIGS. 9 to 13 although the documents are not disclosed.

First, in the case of the conventional configuration shown in FIG. 9, the feeding roller 3 and the separation roller 4 are rotatably provided in the same direction on one end side of the hopper 2 for holding the stacked sheets 1. The feeding shaft 3a of the feeding roller 3 and the separation roller shaft 4a of the separation roller 4 are arranged in parallel to each other.

Further, an auxiliary feed roller 5 is provided on the lower surface of the hopper 2 so as to be rotatable in the direction of the arrow, and a part of the feeding roller 3 and the auxiliary feed roller 5 on the peripheral surface has a high friction material such as rubber. And friction portions 3b and 5a are formed.

In this case, the delivery roller 3 and the separation roller 4 are
As shown in FIG. 10, a groove portion formed on the peripheral surface of the feeding roller 3 in a state where they are superposed by the superposition amount.
The separation roller 4 is inserted into the inside of 3c to prevent the passage of paper sheets, and the frictional force of the friction portion 3b of the feeding roller 3 exceeds the blocking force of the separation roller 4. The leaves can be transported.

The conventional configuration shown in FIG. 11 is provided on the separation roller shaft 4a via the separation roller 4 and the one-way clutch 6 so that it can rotate only in one direction.
Torque acting in the direction of the arrow is generated by driving means such as a spring and vibration, and the separation roller 4 is rotated by a predetermined angle.

Therefore, when separating the paper sheet, by rotating the separation roller 4 by a predetermined angle, a plurality of contact portions 4b 'that contact the paper sheet 1 are formed at predetermined angular intervals, as shown in FIG. Uneven wear of the separation roller 4 can be prevented.

c. Problems to be Solved by the Invention Since the conventional paper sheet counter is configured as described above, it has the following various problems.

(1). Since the conveying force is applied only to the worn parts of the feeding roller for the paper sheets, the adjustment of the overlapping state between the feeding roller and the separation roller is extremely delicate, and even a slight change between the axes causes a large change in the overlapping state, and the counting It was necessary to finely adjust the amount of polymerization depending on the thickness of the target paper sheet, the degree of damage, and the like.

(2). Further, the separating roller must be accurately positioned at the center position of the groove portion of the feeding roller, and it requires a great deal of skill and time to adjust the position at the time of assembly, and the separating roller must be inserted into this groove portion. Due to the disposition, traces of a folded state were formed in a direction parallel to the paper sheet conveying direction, and the appearance of the paper sheet after counting was significantly impaired.

(3). When the paper sheet comes into contact with the separation roller, the front surface 1a of the paper sheet enters between the separation roller and the feeding roller as shown in FIGS. 12 and 13 because the surface of the separation roller has an arc shape. When coming, it is easy to bend along the arc surface of the separation roller that rotates in the direction opposite to the paper sheet conveying direction, and if the paper sheet is conveyed as it is in the arrow direction, it will be conveyed in the folded state, Eventually, the sheet becomes overwhelmed, which hinders the conveyance after being fed out and spoils the appearance of the paper sheets.

(4). Furthermore, in the case of the conventional configuration shown in FIG. 11, in order to prevent uneven wear of the separation roller, the separation roller must be rotated by a predetermined angle by the drive means, and the mechanism accompanying the adoption of the one-way clutch and the drive means, etc. Due to the complication, the cost was significantly increased and the maintenance cost was increased.

INDUSTRIAL APPLICABILITY The present invention promptly solves the above-mentioned various problems, in particular, increases the contact area between the separation roller and the paper sheet, improves the separation ability, and minimizes damage to the paper sheet. The purpose is to obtain a paper sheet counting machine.

d. Means for Solving the Problems The paper sheet counting machine according to the present invention has a large number of paper sheets stacked in a hopper provided on the upper part of the main body, and the paper of the hopper provided on the main body. In the one in which the feeding roller positioned below the leaf and the separating roller positioned above the feeding roller feeds the sheets one by one, and after counting, the stacker stacks the paper sheets,
The separation roller shaft of the separation roller is arranged in a direction substantially orthogonal to the supply roller shaft of the supply roller, and an elongated passage is formed between the separation roller and the supply roller. The roller has a configuration in which the diameter is different in the axial direction.

e. Action In the paper sheet counter according to the present invention, the separating roller has different diameters in its longitudinal direction, and its axial direction is orthogonal to the axial direction of the feeding roller.
The amount of polymerization between the separation roller and the feeding roller is significantly improved, and extremely stable separation and feeding are performed.

In addition, a long and narrow passage is formed between the feeding roller and the separation roller, and the paper sheets inserted between the rollers have no room to move backward in the conveying direction. Safe and reliable transportation without bending.

f. Examples Hereinafter, preferred examples of the paper sheet counting machine according to the present invention will be described in detail with reference to the drawings.

FIGS. 1 to 8 are for showing a paper sheet counting machine according to the present invention. FIG. 1 is a sectional view schematically showing the entire structure, and FIG. 2 is a rear view of the main part of FIG. FIG. 3 is an enlarged cross-sectional view of an essential part of FIG. 1, FIG. 4 is a perspective view, and FIGS. 5 to 8 are configuration diagrams showing a superposed state of the separation roller and the delivery roller. . It should be noted that the same or equivalent parts as those of the conventional example will be described using the same reference numerals.

In the figure, reference numeral 1 is a paper sheet laminated on the hopper 2, and at the upper position of the hopper 2, a main body 7 is detachably provided by a nut 8 and the whole shape is A substantially L-shaped hopper auxiliary plate 9a is mounted.

A feeding roller 3 and an auxiliary feed roller 5 are rotatably provided at a lower position of the hopper 2 in the main body 7, and a part of a peripheral surface of the auxiliary feed roller 5 is formed in the hopper 2. It is possible to make contact with the back surface of the paper sheet 1 on the hopper 2 by penetrating through the formed through hole (not shown).

Further, a friction portion 3b made of a high friction material such as rubber is formed on a part of the peripheral surface of the feeding roller 3, and the paper is fed one by one by the friction portion 3b.

On the back side of the feeding roller 3, a separation roller holding body 9 having a drum-shaped separation roller 4 and a pinch roller 4b is provided via a frame shaft 10 provided in the main body 7, and an arrow A
The separation roller shaft 4a for holding the separation roller 4 is attached to the holding member 11 which is provided so as to be openable and closable in the direction. A spring 24 is stretched between them.

The separating roller shaft 4a of the separating roller 4 is arranged in a direction substantially orthogonal to the axial direction of the supplying roller shaft 3a of the supplying roller 3 described above.
Is the separation roller shaft 4a as shown in FIGS.
It is composed of a pair of parts that can be attached to and detached from the feeding roller 3
It is held in a state of overlapping in a pair of groove portions (not shown) formed on the peripheral surface of the.

Therefore, an elongated passage is formed between the separating roller 4 and the feeding roller 3 described above.

Further, the connecting portion 11a formed by projecting upward from a part of the holding member 11 is rotatably provided on the separation roller holding body 9 and is connected to the dial 12 integrally with the rotary screw body.
13 is screwed, and further, the holding member 11 is axially fixed to the separation roller holding body 9 and is held by a pinch roller shaft 14 which is spring biased by a spring 14a via a screw 15, By rotating the rotary screw body 13 via 12, the separation roller 4a slightly moves in the direction of arrow B, and the relative distance (gap) between the separation roller 4 and the delivery roller 3 can be adjusted. The pinch roller 4b
Is rotatably provided on the shaft support portion 14 and is in contact with the feeding roller 3.

Therefore, the dial 12 and the rotary screw body 13 constitute the relative distance varying means 16 for varying the relative distance.

The separating roller 4 is configured to be freely rotatable with respect to the separating roller shaft 4a, but the separating roller 4 is forcibly rotated by a driving unit such as a motor or a solenoid, or a separating roller is used. 4 separate roller shaft 4a
Rotatably provided on the separating roller 4 to bring the separating roller 4 into a slight rotating state by vibration by a vibrating means (not shown). Further, the separating roller shaft 4a is slightly orthogonal to the feeding roller shaft 3a in either direction. Even when the structure is inclined, it can be applied as an arrangement structure for obtaining a good separating / feeding operation.

Further, a pair of paper feed rollers 17 and 18 are rotatably abutted on the lower position of the feeding roller 3, and the lower position of each of the rollers 17 and 18 is the lateral direction. A pair of impellers 19 (only one of which is shown in the drawing) are rotatably provided in parallel with each other, and the paper sheet 1 sent from the feeding roller 3 is guided by a guide member 20 and
It is sent to this impeller 19 via 20a to 20c.

The auxiliary feeding roller 5, the feeding roller 3, the paper feeding rollers 17 and 18 and the impeller 19 are the bottom portion 7a in the main body 7.
It is configured to be driven in an interlocking manner by a drive motor 21 attached above.

On the front side of the main body 7 adjacent to the impeller 19 described above, a stacker 22 having a generally L-shaped overall shape is openable / closable in the direction of arrow C around a shaft support 23 provided on the main body 7. It is configured.

As shown in FIGS. 1 and 5, the separation roller 4 described above has a peripheral surface that is an arcuate curved surface when it is formed in a drum shape, and overlaps with the delivery roller 3. The amount is larger than that in the case of a straight line, and the configuration is such that an extremely good paper sheet separating operation is obtained.

Further, the separation roller 4 shown in FIG. 6 has a substantially conical shape, and by the improvement of the amount of polymerization with the feeding roller 3, a good sheet separating operation can be obtained.

Further, the separation roller 4 shown in FIG. 7 is formed in a substantially trumpet shape by forming one end 4c of the cylindrical shape into a flared shape.
Since the outer peripheral surface of the one end 4a is superposed on the feeding roller 3, an extremely large amount of superposition can be obtained. Although it is extremely difficult to process into this shape, it is the most ideal sheet separating ability. This is the configuration.

Further, the configuration shown in FIG. 8 shows a configuration in which a drum-shaped separating roller 4 having a bulged central portion is used, and the outer peripheral surface of the bulging portion 4a of the separating roller 4 is the feeding roller 3 By polymerizing with, an extremely large amount of polymerization can be obtained.

The paper counter according to the present invention is configured as described above, and its operation will be described below.

First, in the state shown in FIG. 1, when the stacker 22 is opened as shown by the solid line and the drive motor 21 is operated, the auxiliary feeding roller 5, the feeding roller 3, the paper feeding rollers 17 and 18 and the impeller 19 are Start spinning. At the same time, the sheets 1 on the hopper 2 are fed one by one from the lower layer to the feeding roller 3 side by the auxiliary feeding roller 5.

The paper sheet 1 sent to the feeding roller 3 side is separated by the separation roller 4
It is sandwiched between the groove portion 3c and the groove portion 3c and is subjected to a friction separating action by the friction portion 3b of the feeding roller 3 and the separating roller 4 through an elongated passage, and then is fed to the paper feed rollers 17 and 18.

In this case, since the friction area between the outer periphery of the separation roller 4 and the paper sheet 1 is larger than that of the conventional structure based on the arrangement configuration in which the separation roller 4 is orthogonal to each other, extremely high separation ability is exhibited and Since the longitudinal outer peripheral surface of the separation roller 4 and the paper sheet 1 contact each other, damage to the paper sheet 1 can be suppressed to a minimum.

As described above, the paper sheets 1 separated one by one are passed through the guide members 20 and 20a to 20c, and the paper sheet counting sensor 20
By d, it is optically or magnetically detected and counted, and is fed into the stacker 22 through the impeller 19 while being aligned in the vertical direction.

In general, the larger the relative distance (gap) between the separation roller 4 and the delivery roller 3, and the larger the amount of polymerization, the better the separation performance.
As shown in FIG. 5 to FIG. 8, if the amount of superposition is constant, the amount of superposition on the circumference is much larger than that in the conventional device in which the receiving shafts of the feeding roller and the separating roller are parallel. Further, the amount of polymerization is further large as compared with the case where the separation roller 4 has a cylindrical shape with the same diameter.

Further, in general, when the paper sheet 1 is conveyed between the feeding roller 3 and the separation roller 4, it is desirable that the paper sheet 1 travels linearly, but the accuracy of the roller, the assembly accuracy, the thickness variation of the paper sheet 1, Due to variations in the paint on the printed matter, there is the property that the printed matter is conveyed slightly left or right with respect to the straight traveling direction. In this case, as described above, when the separation roller 4 is freely rotatable, rotated by the driving means, or the separation roller shaft 4a is slightly inclined from the orthogonal state, the paper sheet 1
It is extremely effective for straight line conveyance.

g. Effects of the Invention Since the paper sheet counting machine according to the present invention is configured as described above, the following effects can be obtained.

(1). Since the separation roller is arranged orthogonal to the delivery roller and is formed in the shape of a roller with a different diameter in the axial direction, the contact area between the separation roller and the paper sheet is greatly increased, and the separation capacity is greatly increased. Can be improved.

(2). A long and narrow passage is formed between the separating roller and the feeding roller, and since there is no room for the incoming paper sheet to go backward in the conveying direction, the front end of the paper sheet does not break. Therefore, the damage to the paper sheet is extremely small.

(3). Since the separation roller can rotate about the separation roller shaft, the outer peripheral surface of the separation roller is uniformly worn, and malfunction due to uneven wear can be prevented.

[Brief description of drawings]

FIGS. 1 to 8 are for showing a paper sheet counting machine according to the present invention. FIG. 1 is a sectional view schematically showing the entire structure of the paper sheet counting machine, and FIG. 2 is FIG. FIG. 3 is an enlarged cross-sectional view showing an essential part of FIG. 1, FIG. 4 is a perspective view, and FIGS. 5 to 8 are various combinations of a separating roller and a feeding roller. FIG. 9 to FIG. 13 are for showing a conventional configuration, and FIG. 9 is a configuration diagram of a main part,
Fig. 10 and Fig. 11 are configuration diagrams showing the overlapping state of each roller,
12 and 13 are configuration diagrams showing a state in which paper sheets are separated. 1 is a paper sheet, 2 is a hocher, 3 is a delivery roller, 3a is a delivery roller shaft, 4 is a separation roller, 4a is a separation roller shaft,
Reference numeral 9 is a separation roller holder, 16 is a relative distance varying means, and 19 is an impeller.

Claims (8)

[Claims] 1. A large number of paper sheets (1) stacked in a hopper (2) provided on an upper part of a main body (7) are provided on the main body (7). The feeding roller (3) located below the paper sheet (1) and the separating roller (4) located above the feeding roller (3) feed the paper one by one, and after counting the number of sheets, the paper is fed to the stacker (22). In a paper sheet counting machine configured to stack leaves (1), a separation roller shaft (4a) of the separation roller (4) is substantially orthogonal to a supply roller shaft (3a) of the supply roller (3). And the separating roller (4)
An elongated path is formed between the feeding roller (3) and the feeding roller (3), and the separating roller (4) is configured to have different diameters in the axial direction thereof. . 2. The paper sheet counting machine according to claim 1, wherein the separating roller has an hourglass shape. 3. The paper sheet counting machine according to claim 1, wherein the separating roller has a substantially conical shape. 4. The paper sheet counting machine according to claim 1, wherein the separating roller has a trumpet shape whose one end is flared. 5. The paper sheet counting machine according to claim 1, wherein the separating roller is configured to be rotatable with respect to a separating roller shaft. 6. The paper sheet counting machine according to claim 1, wherein the separation roller is configured to be detachable from a separation roller shaft. 7. The paper sheet counting machine according to claim 1, wherein the separating roller is configured to rotate by a driving means. 8. The separating roller according to claim 1, wherein the separating roller is configured to be freely rotatable in one direction on a separating roller shaft by a driving means. The described paper sheet counting machine.