JPH054301B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a paper sheet dispensing device that is applied to, for example, a bill counter, a bill dispensing machine, and other paper product supply equipment.

[Technical background of the invention and its problems]

This type of device generally uses a photoelectric switch or the like to detect the number of sheets to be fed. That is, the counting is performed by light reaching the light receiver from the light emitter at every interval before and after the paper sheet. Therefore, in order to accurately detect the number of sheets fed out,
It is necessary to ensure the space between the front and back of the paper sheets to be fed. In the case of a banknote dispensing machine, in addition to accurate counting, it is also necessary to ensure the amount of banknotes to be dispensed, and to stop operation when the banknotes are dispensed without overloading or underloading.

In such paper sheet feeding devices, a method is generally adopted in which the paper sheet feeding speed is increased midway through to increase the distance between the front and back, but conventionally, a large number of rollers are used to provide a speed difference. The structure is relatively complex.

In addition, conventionally, a brake device or a clutch mechanism has been used in the rotating mechanism as a means to quickly stop the feeding operation when the required number of sheets have been fed out, but this increases the number of parts and complicates the configuration.
It is becoming larger.

For this reason, recent efforts have been made to reduce the number of rollers by arranging multiple drum elements with different rotational speeds on the same axis and using a feeding drum that sequentially contacts each drum element to vary the feeding speed. It is also being considered to omit a brake device or clutch mechanism by employing a motor brake that temporarily stops the motor through current operation.

By the way, as a simple structure that gives a speed difference to each drum element of such a feeding drum,
One drum element is rotatably attached to the rotating shaft of another drum element, and this rotatable one
There is a drum element in which one drum element is rotated at a higher speed than the other drum elements by a roller that is in rolling contact with the drum element. On the other hand, if a motor brake is used, there will be a slight time delay from when the motor stops until the feeding stops. Therefore, in a configuration in which both the feeding drum and the motor brake are used in combination to perform sheet feeding operation to a set value, the point at which the motor brake is applied is set slightly earlier, so that the sheet is A stop command is outputted while the sheet is wound around the drum element, so that the specified last sheet is inertially delivered and the feeding action is completed.

However, with such a structure, when the drive is stopped with the specified final sheet wrapped around both drum elements of the feeding drum, the paper sheet pressure contact points on both drum elements may face in opposite directions. Such tension may occur, causing the sheet to act like a band brake that wraps around the drum, causing it to stop inside the device. To solve this problem, for example, it is possible to support the other drum element rotatably in the feeding direction with a one-way clutch, but if this is done, the other drum element can be moved to one side during normal sheet feeding. The paper sheets are used as media in the drum elements and are entrained like pulleys, and there is no speed difference between the drum elements, which causes the problem that the paper sheets are continuously fed out and the required front-to-back spacing cannot be formed. Therefore, if both the feeding drum and motor brake as described above are used,
Feeding paper sheets according to the set number of sheets tends to be uncertain,
Attempts to solve this problem resulted in the problem that the sheet spacing could not be formed, making it easy for errors in count values to occur.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and provides a paper sheet feeding device with a simple structure, in which the final sheet is reliably delivered when the brake is applied, and the interval between sheets is reliably formed during normal feeding. The purpose is to provide

[Summary of the invention]

In order to achieve the above object, the paper sheet dispensing device according to the present invention includes a hopper section that stores paper sheets in a stack and sequentially feeds out the paper sheets starting from the lowest one, and a hopper section that is rotatably driven below the hopper section. a feed-out drum that reversely guides the paper at a constant initial feed-out speed; a paper sheet presser that presses the paper sheets against the upper outer peripheral surface of the feed drum; An inertia drum for dispensing paper sheets is rotatably mounted on the inertial drum, and the inertia drum is in rolling contact with the lower outer circumferential surface of the inertia drum, and the inertia drum is rotated at a higher speed than the above-mentioned delivery drum while holding the paper sheets between them and adjusting the final delivery speed. the delivery drum is engaged with a rotational drive portion of the delivery roller via a rotary cam so as to be able to follow and rotate in a predetermined angle in advance in the paper delivery direction; The roller is characterized in that it is connected to the rotary drive section by a one-way clutch so that it can freely rotate in the sheet feeding direction.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Note that this embodiment concerns a banknote dispensing machine that dispenses a required number of banknotes.

A hopper part 3 is formed in the upper part of the box-shaped casing 1 to accommodate banknotes 2 in a stacked manner in an inclined manner. A delivery roller 4 is provided at the bottom of the hopper section 3 to sequentially send out the banknotes 2 obliquely downward starting from the lowest one. The delivery roller 4 is connected to a motor 5 via a belt transmission means 6. The motor 5 is an AC motor, and a motor brake can be applied by applying a DC current via a control section (not shown).

A pair of opposing feed-out drums 7 are provided diagonally below the feed-out port 3a of the hopper section 3 for reversing and guiding banknotes at a constant initial feed-out speed. Each of the feeding drums 7 is fixed with a screw 10 to a rotating shaft 9 supported by the casing 1 via a bearing 8, and rotates together with the rotating shaft 9. The power transmission mechanism of this rotating shaft 9 will be explained in detail later. A non-rotating disk-shaped pressing member 11 is provided above the feeding drum 7 and serves as a sheet pressing tool for pressing the banknotes against the outer circumferential surface of the drum 7. That is, the banknotes 2 fed out from the hopper section 3 are brought into pressure contact with the upper outer peripheral surface of the feeding drum 7 by the pressure member 11, and advance in the tangential direction of the feeding drum 7 due to frictional force. The pressure member 11 includes a guide frame 13 which is pivotally connected to the lower end of the casing 1 via a support shaft 12 and is rotatable up and down.
It is attached to the tip of the The guide frame 13 is fixed in an upward rotating position so as to cover the feeding drum 7, and its inner surface has a concave bill guide surface 1 along the outer peripheral surface of the feeding drum 7.
4, and the banknote 2 can be guided to the lower part of the payout drum 7 by this guide surface 14.

A pair of inertial drums 15 are mounted on the rotation shaft 9 of the feeding drum 7 and are located on the outer side of each feeding drum 7.
are rotatably mounted via bearings 16, respectively. The inertial drum 15 is made of metal or the like and has a predetermined weight that allows for inertial rotation. Note that each inertial drum 15 has approximately the same diameter as the feeding drum 7, and is capable of contacting the bill 2 on both outer sides of the feeding drum 7.

At the lower part of the inertial drum 15, that is, at the banknote reversing position, there is a dispensing device that contacts the outer circumferential surface of the inertial drum 15, clamps the paper sheet 2 while giving it rotation at a higher speed than the dispensing drum 7, and dispenses it at the final dispensing speed. A roller 17 is provided. A rotating shaft 18 of this dispensing roller 17 is supported by the casing 1 via a bearing 19, and is rotationally driven by the following power transmission mechanism that is common to the rotating shaft 9 of the dispensing drum 7.

That is, a rotation transmission member 22 integrally having a pulley 20 and a gear 21 is rotatably mounted on one end side of the rotating shaft 9 of the feeding drum 7 via a sleeve 23. This rotation transmission member 22 is connected to the hopper portion 3
The rotation of the delivery roller 4 is received via the pulley 24 and the belt 25, and this rotation is transferred to the delivery roller 17.
The power is transmitted to the rotating shaft 18 via a gear 26. In addition, a rotating cam 28 is provided with an engaging pin 27 protruding from the rotation transmitting member 22 in parallel with the axis, and this is attached to one end of the rotating shaft 9 of the feeding drum 7.
is engaged with. The rotating cam 28 is, for example, a disc-shaped member coaxial with the rotating shaft 9, and has a cam groove 2 cut out at a predetermined angle (for example, 90 degrees) in a part of its outer circumference.
9, and an engagement pin 27 is inserted into this cam groove 29. As a result, when the rotation transmission member 22 rotates in the banknote feeding direction (arrow A direction in the figure), the engagement pin 27 comes into contact with one end of the cam groove 29,
The rotating shaft 9 and, by extension, the feeding drum 7 are rotated via the rotating cam 28. It should be noted that within the range of the cam groove 29, the rotary cam 28 and thus the delivery drum 7 can rotate in advance in the banknote delivery direction A relative to the rotation of the engagement pin 27.

Feeding drum 7 rotates via rotating cam 28
The rotation ratio between this and the inertial drum 15 rotating via the dispensing roller 17 is the number of teeth of each gear 21, 26,
It is determined by the rotation radius of the engagement pin 27, the outer diameter of the dispensing roller 17, etc., and gives the inertial drum 15 a higher rotation speed than the dispensing drum 7.

In addition, the rotating shaft 18 of the dispensing roller 17 and the gear 2
6 is connected via a one-way clutch 30, so that the payout roller 17 can freely rotate in the banknote payout direction.

Note that although not shown, a banknote counter consisting of a photoelectric switch and the like is provided below the feeding drum 7. Behind the feeding drum 7, a slide guide 31 for banknotes, a stacker 32 for vertically feeding banknotes, a banknote receiving section 33, etc. are provided.

Next, the effect will be explained. When the motor 5 is rotationally driven, the delivery roller 4 is rotated and the rotation transmission member 22 is also rotated. As a result, as shown in FIG. 4, the delivery roller 7 is rotated via the rotary cam 28, and the delivery roller The inertial drum 15 rotates at a higher speed than the delivery drum 7 via the drum 17 . The banknotes 2 in the hopper 3 are fed between the feeding drum 7 and the pressure member 11 by the feeding roller 4, and are wound into the feeding drum 7 by friction. The rolled-up banknotes 2 are reversely guided between the banknote guide surface 14 of the guide frame 13 and the outer peripheral surface of the payout drum 7 and reach the payout roller 17. Payout roller 1
7 is in rolling contact with the inertial drum 15 and is rotating at a higher speed than the payout drum 7, so that the banknotes 2 that have reached between the rolling contact portions are dispensed below the drum at increased speed. While this high-speed dispensing is being performed, the next banknote 2 is introduced from the hopper 3 to the dispensing drum 7 at a speed lower than the dispensing speed. Based on the difference between the introducing speed and the dispensing speed, a distance is formed between each banknote in the forward and backward directions.

In such a dispensing action, when the length of the banknote 2 in the dispensing direction is larger than the circumferential distance between the two contact points of the drum, that is, when the dispensing drum 7 and the pressure member 11
A case may occur in which the front and rear ends of the banknote 2 are simultaneously pinched between the pressure contact portion caused by the inertial drum 15 and the pressure contact portion by the inertial drum 15 and the payout roller 17. In this case, if no measures are taken, the bills may slip at one of the contacts and the bills will not be dispensed smoothly.Furthermore, if the dispensing drum 7 is supported in the dispensing direction with a one-way clutch or the like, the dispensing drum 7 rotates together with the inertial drum 15, making it no different from an integrated drum, and as a result, subsequent banknotes are also fed out one after another at high speed, making it impossible to form a sufficient front-to-back interval. However, in the configuration of the present invention, the rotating cam 28 allows the feeding drum 7 to advance by a predetermined angle, so the feeding drum 7 temporarily rotates at the same speed as the inertial drum 15 to pay out the banknotes 2. . Immediately after the rear end of the banknote 2 comes off from between the feeding drum 15 and the pressure member 11, the engagement pin 27 is disposed behind the cam groove 29 of the rotating cam 28, as shown in FIG. Therefore, this engagement pin 2
The transmission of rotation by 7 to the rotating cam 28 is cut off.
As a result, the rotary cam 28 and therefore the feeding drum 7 temporarily stop rotating, and after the engagement pin 27 comes into contact with the front end of the cam groove 29 due to the rotation of the rotation transmission member 22, it rotates again. Therefore, while the feeding drum 7 is stopped, new banknotes 2 are
This time is a waiting time, and the banknote interval is reliably formed. Thereby, counting by a photoelectric switch or the like is performed without error.

Further, when the feeding operation is to be stopped when the set number of banknotes are paid out, the motor 5 is stopped by a motor brake. In this case, from a responsiveness perspective,
The motor is stopped when the final banknote is at the drum-wound position, but it is assumed that the inertial drum 15 has a predetermined weight, and that the payout roller 17 that contacts it is connected to the gear 26 of the rotation transmission section. Since the one-way clutch 30 allows free rotation in the feeding direction, the inertial drum 15 rotates due to inertia and performs the bill feeding function. On the other hand, even when the front and back length of the banknote 2 is large and the front and rear ends of the banknote are clamped between the two contacts of the drum as described above, the rotating cam 28 moves ahead of the engagement pin 27, that is, the rotation drive unit. Since it is rotatable, the payout drum rotates together with the inertial drum 15, allowing the final banknote to be paid out. Therefore, there is no fear of remaining banknotes, and the payout is reliably performed according to the set value.

In the above embodiments, the present invention is applied to a banknote dispensing machine, but the present invention is not limited to this and can be applied to various paper sheet counting and dispensing machines.

〔Effect of the invention〕

As described in detail in the above embodiments, according to the banknote counting machine according to the present invention, by adopting a rotating cam structure that allows the feeding drum to follow the rotational drive section of the inertial drum and rotate in advance by a predetermined angle. After the temporary rotation of both drums, the feeding drum temporarily stops and the subsequent paper sheet is placed on standby, so that the space between the front and back of the paper sheet can be secured, and there is no risk of counting errors and high reliability can be achieved. .

In addition to the configuration that allows the advance rotation of the delivery drum, the inertial drum rolling delivery roller is configured to be able to freely rotate in the sheet delivery direction via a one-way clutch in the rotation drive section, so that when the delivery of the paper stops, the last sheet is reliably dispensed without remaining in the device.

Therefore, with a simple configuration by employing a motor brake and reducing the number of rollers, it is possible to reliably dispense paper sheets.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a vertical cross-sectional view of the central part, FIG. 3 is a cross-sectional view taken along the line -- in FIG. 2, and FIGS. 4 and 5 are action explanatory views. 2... Paper leaf (banknote), 3... Hopper part, 7... Feeding drum, 9, 18... Rotating shaft, 11... Paper leaf pressing tool,
15... Inertia drum, 17... Payout roller, 22...
Rotation drive unit (rotation transmission member), 28...rotation cam,
30...One-way clutch.

Claims (1)

[Claims] 1. A hopper section that stores paper sheets in a stack and sequentially sends them out starting from the lowest one, a feed-out drum that is rotationally driven below this hopper section and reversely guides the paper sheets at a constant initial feed-out speed, and an upper part of this feed-out drum. A paper sheet pressing tool that presses paper sheets against an outer peripheral surface; an inertia drum for paper sheet dispensing that has a predetermined weight capable of inertial rotation and is rotatably mounted on the rotating shaft of the dispensing drum; and this inertial drum. a dispensing roller that is in rolling contact with the lower outer circumferential surface of the dispensing drum, and pinches the paper sheet and dispensing it at a final dispensing speed while giving the inertia drum a higher rotation speed than the dispensing drum, and the dispensing drum rotates at a speed higher than that of the dispensing roller. The dispensing roller is engaged with the drive unit via a rotary cam so as to be rotatable to follow in the direction of dispensing the paper sheets and to rotate ahead of it by a predetermined angle, and the dispensing roller is connected to the rotary drive unit by a one-way clutch so as to be rotatable in the direction of dispensing the paper sheets. A paper sheet feeding device characterized by being connected.