JP2560481Y2 - Paper separation and feeding device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper sheet separating and feeding apparatus incorporated in an automatic depositing / dispensing machine or an optical reader, and is used for paper money such as banknotes, documents or papers stored in a storage section. This is a sheet separating / feeding device that feeds separated sheets one by one by cooperating with a plurality of types of rollers that rotate so that the feeding directions are different.

[0002]

2. Description of the Related Art FIG. 8 is a perspective view showing a conventional paper sheet separating and feeding apparatus, FIG. 9 is a front view of FIG. 8, and FIG. 10 is a side view of FIG. In the figure, reference numeral 1 denotes a storage portion, which has a guide plate portion 2 at a front end portion, and a bottom portion serving as a stage 3 which can move up and down. Reference numeral 4 denotes paper sheets stored in the storage unit 1 in a form accumulated on the stage 3. Reference numeral 5 denotes a pickup roller having a high friction member 6 at a part of the outer periphery. Two pickup rollers 5 are fixed to a shaft 7 at a predetermined interval and arranged on the paper sheet 4. A feed roller 8 has a high friction member 9 on a part of the outer periphery similarly to the pickup roller 5, and has two grooves 10 on a ring extending in the entire circumferential direction. The feed roller 8 is a shaft 1 provided in parallel with the shaft 7.
2 are fixed at a predetermined interval, and are located on the guide plate portion 2. A separation roller 12 has one groove 13 on a ring extending over the entire circumferential direction. The separation roller 12 is attached to a shaft 15 rotatably held by a holding block 14 located below the guide plate portion 2 at the same interval as the feed roller 8.
Further, a part 17 of the outer periphery projects from the through hole of the guide plate part 2 to the upper surface side and slightly meshes with the feed roller 8 and the grooves 10 and 13, and a pulley 17 attached to one end of the shaft 11 Motor, 19 is motor 18
Drive pulley attached to the rotary shaft of
7 and a belt wound around the drive pulley 19.

Reference numeral 21 denotes a pulley similar to the pulley 21 attached to one end of the shaft 11, and 23 denotes pulleys 21 and 22.
It is a belt wound around. When the motor 18 is rotated in a predetermined direction, the rotational force is transmitted to the pulley 17 via the drive pulley 19 and the belt 20. Thereby, the feed roller 8 and the pulley 2 are integrated with the shaft 11.
1 rotates, and the belt 2 is rotated from the rotating pulley 21.
The rotational force is transmitted to the pulley 22 via the
Then, the pickup roller 5 rotates integrally therewith.

At this time, the pulleys 21 and 22 rotate at the same rotational speed, and the pickup roller 5 and the feed roller 8 move in the same direction as indicated by the arrow a, that is, the paper sheet 4 And rotate at the same speed in the direction of feeding. Reference numeral 24 denotes a pair of brackets for supporting the shaft 7. The bracket 24 has a protruding side 24a protruding upward, the shaft 11 is rotatably mounted on one end via a bearing 25, and the shaft 7 is rotatable on the other end via a self-aligning bearing 26, and It is mounted so that it can be moved up and down with respect to the shaft 11 and tilted by a predetermined amount.

Reference numeral 27 denotes a regulating post for regulating the angle of inclination of the bracket 24 when the bracket 24 is inclined.
Are formed so as to protrude inward from frames provided on both sides thereof. Numeral 40 is a post formed to protrude from frames provided on both sides of the storage section 1. 28
L and 28R are springs having the same spring constant, and are urged in the direction of pressing the paper sheet 4 by the pickup roller 5 by hanging one end of the protrusion 24a of the bracket 24 and the other end of the spring on the post 40. You.

According to the above-described configuration, when feeding the paper sheets 4 accumulated in the storage section 1, the paper sheets 4 have a habit or the like as shown in FIGS. The sheet 4 is inclined so as to be parallel to the uppermost surface of the sheet 4. As a result, the pickup roller 5 is always in contact with the paper sheet 4 perpendicularly, and the normal force acts uniformly. In this state, the motor 1 is controlled by a signal from a control unit (not shown).
8 is transmitted to the pulley 17 via the drive pulley 19 and the belt 20 to rotate the shaft 11.
Then, the feed roller 8 and the pulley 21 are rotated integrally.
The rotational force of the pulley 21 is applied to the pulley 2 via the belt 23.
2, the pickup roller 5 is rotated integrally with the shaft 7 in the direction of arrow a. At this time, the separation roller 12
Is also rotated in the direction of arrow b by a motor (not shown).

When the pickup roller 5 rotates, the uppermost sheet 4 has a high friction member 6 provided on the outer periphery thereof.
It is fed forward by the frictional force with. The leading edge of the fed paper sheet 4 has a feed roller 8 and a separation roller 12.
And the feed roller 8 receives the feed force in the direction of arrow c by the frictional force with the high friction member 9 provided on the outer peripheral portion by the rotation of the feed roller 8.

At this time, a force is applied to the paper sheet 4 to push it back to the storage section 1 by the separation roller rotating in the direction of the arrow b, but the frictional force of the separation roller 12 against the paper sheet 4 is
Since the frictional force of the high friction member 9 on the paper sheet 4 is smaller than that of the paper sheet 4, the paper sheet 4 is fed in the direction of arrow c along the guide plate 2 as the feed roller 8 rotates. At this time, when a plurality of paper sheets are fed out while being overlapped by the pickup roller 5, the rotation of the separation roller 12 pushes back the paper sheets other than the uppermost paper sheet that comes into contact with the pickup roller 5. Accordingly, the paper sheets 4 are fed one by one from the storage unit.

[0009]

However, in the prior art having the above structure, when the inclination of the sheet 4 is large and the inclination of the pickup roller 5 and the shaft 7 are large, the difference in the inclination angle of the bracket 24 supporting the shaft 7 is large. Becomes large, and the spring 28L hung on the bracket 24,
The difference in elongation of 28R, that is, the difference in tensile force, increases. Due to the difference in the tensile force, the sheet 4 of the pickup roller 5
, And a difference also occurs in a feeding force for feeding the paper sheet 4. Therefore, the paper sheet 4 is fed obliquely and caused a jam during the conveyance.

[0010] In view of the above problems, the present invention obtains a configuration in which the feeding force of the plurality of pickup rollers is made constant, the pressing forces of the plurality of pickup rollers become non-uniform, and the paper sheet skews. An object of the present invention is to provide a paper sheet separating / feeding device with high operation reliability, which eliminates the problem of feeding.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention applies a braking force to a paper sheet so as to constantly correct the difference in the feeding force of the pickup roller and to make the difference constant. That is, the present invention provides a plurality of pick-up rollers for pressing the uppermost sheets stacked on a vertically movable stage of the storage unit to feed the sheets, and the sheets fed by the pickup rollers. A plurality of feed rollers for feeding the sheet to the next part, a separation roller disposed opposite the lower side of the feed roller, a shaft to which the pickup roller is attached, and a shaft to which the feed roller is attached. And a plurality of brackets attached at one end so that the feed roller shaft is rotatably attached, and the other end of the pickup roller shaft is attached to the feed roller shaft so that the shaft can be vertically inclined with respect to the feed roller shaft. One end is attached to each of the plurality of brackets, and the pickup roller is A sheet separating / feeding device including a spring for urging the sheet in the direction of pressing the sheet, a plurality of brake members for pressing the sheet in the vicinity of the pickup roller, and the brake member is provided. A spring for biasing the paper sheet in a pressing direction is attached to each of the plurality of brake members.

Alternatively, a structure in which a difference in the feeding force of the pickup roller is not generated in advance. That is,
A plurality of pick-up rollers for pressing out the uppermost sheets stacked on the vertically movable stage of the storage unit and feeding the sheets, and moving the sheets fed by the pick-up rollers to the next part. A plurality of feed rollers for feeding, a separation roller disposed opposite the lower side of the feed roller, a motor for rotating a shaft to which the pickup roller is attached and a shaft to which the feed roller is attached, and one end. A pair of brackets to which a shaft of the feed roller is rotatably mounted, and a shaft of the pickup roller is mounted to the other end so as to be vertically inclined with respect to the shaft of the feed roller, and each of the pair of brackets Attach one end to
A sheet separating / feeding device having a spring for urging the pickup roller on the pickup roller through the bracket in a direction of pressing the sheet, wherein one long spring as the spring; A plurality of pulleys that support the length spring, and a support portion that rotatably supports the pulley, each end of the long spring,
It is characterized by being attached to the bracket.

[0013]

According to the present invention, the uppermost surface of the paper sheets deposited on the stage of the storage unit is inclined by various factors, thereby causing a difference in the inclination angle of the bracket. Due to the difference in the extension of the spring applied to the bracket, that is, the difference in the pulling force, even if the difference in the feeding force of the pickup roller occurs, the difference also occurs in the extension of the spring that urges the brake member. There is also a difference in force. Therefore, there is no difference in the overall feeding force obtained by subtracting the braking force of the brake member from the feeding force of the pickup roller.

According to the present invention, the uppermost surface of the paper sheets deposited on the stage of the storage unit is inclined by various factors, and thus the inclination angle of the bracket is reduced. Even if a difference occurs, there is no difference in the spring force applied to each bracket since both ends of one long spring are attached to each bracket. Therefore, it is possible to maintain the space between the pickup roller and the sheet so as to always have a uniform vertical force.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a first embodiment of the present invention, FIG. 2 is a front view of a main part of FIG. 1, FIG. 3 is a side view of a main part of FIG. 1, and FIG. 4 is a plan view of a main part of FIG. . In the drawing, 1 is a storage section, 2 is a guide plate section, 3 is a stage, 5 is a paper sheet, 5 is a pickup roller, 6 is a high friction member, 7 is a shaft, 8 is a feed roller, 9 is a high friction member, 10 Is a groove, 11 is a shaft, 12
Is a separation roller, 13 is a groove, 14 is a holding block, 15 is a shaft, 17 is a pulley, 18 is a motor, 19 is a drive pulley, 20 is a belt, 21 is a pulley, 22 is a pulley,
3 is a belt, 24 is a bracket, 25 is a bearing, 26 is a self-aligning bearing, 27 is a regulating post, 28L and 28R are springs, and 40 is a post, which are configured in the same manner as the components of the prior art.

A brake member 29 is disposed near the pickup roller 5 and is fixed to one end of a brake arm 30. The brake arm 30 is rotatably supported by a fulcrum shaft 31. Reference numeral 32 denotes a post that regulates the angle of inclination of the brake arm 30, and is formed to protrude inward from frames provided on both sides of the storage unit 1. 34 are posts formed to project from frames provided on both sides of the storage section 1.
33L and 33R are brake springs having the same spring constant, and are urged in the direction in which the paper member 4 is pressed by the brake member 29 by applying one end to the brake roller 30 and the other end to the post 34. .

According to the above-described configuration, when feeding the paper sheets 4 deposited in the storage section 1, the paper sheets 4 have a habit as shown in FIG. 2 and FIG. When the stacking stage 3 is tilted, the uppermost surface of the paper leaf 4 deposited in the storage unit 1 is tilted, and the pickup roller 5 and the shaft 7 are tilted following the tilt, and the both ends of the shaft 7 are indicated. A difference is generated between the respective inclination angles of the brackets 24, and a difference in the elongation of the springs 28L and 28R applied to the bracket 24, that is, a difference in the pulling force causes a difference in the feeding force of the pickup roller 5 even if the difference occurs. 4, there is also a difference in the elongation of the brake springs 33L and 33R for urging the brake member 29, that is, a difference in the braking force. Ri put F ₁ power respectively, F _2, when a braking force of the braking member 29 and f _1, f ₂ respectively, so that the equation (1), the brake spring 33
If the braking force is set by determining the spring constants of L and 33R and the friction coefficient of the brake member, the pickup roller 5
There is no difference in the entire feeding force obtained by subtracting the braking force of the brake member 29 from the feeding force of the brake member 29.

[0018]

(Equation 1) F₁−f₁≒ F_Two−f_Two... (1)  FIG. 5 is a perspective view showing a second embodiment of the present invention, and FIG.
7 is a side view of the main part of FIG. 5. In the figure
1 is a storage section, 2 is a guide plate section, 3 is a stage,
Is a paper leaf, 5 is a pickup roller, 6 is a high friction member, 7
Is a shaft, 8 is a feed roller, 9 is a high friction member, 1
0 is a groove, 11 is a shaft, 12 is a separation roller, 13 is
Groove, 14 is holding block, 15 is shaft, 17 is pooh
, 18 is a motor, 19 is a drive pulley, 20 is a belt,
21 is a pulley, 22 is a pulley, 23 is a belt, 24 is a belt.
Racket, 25 is a bearing, 26 is a self-aligning bearing, 27
Is a regulation post, 28L and 28R are springs, and 40 is a post.
These are configured similarly to the prior art components.
ing.

Reference numeral 50 denotes a long spring whose both ends are hung on the projecting portion 24a of the bracket 24, respectively. 51
Is a pulley that supports the long spring 50;
Is a supporting portion for rotatably supporting the pulley 51. According to the above-described configuration, when feeding the paper sheets 4 accumulated in the storage unit 1, the paper sheets 4 are bent or the like as shown in FIGS. 6 and 7, or the paper sheets 4 are accumulated. When the stage 3 is tilted, the uppermost surface of the paper sheet 4 deposited in the storage unit 1 is tilted, and the pickup roller 5 and the shaft 7 are tilted following the tilt, and brackets for indicating both ends of the shaft 7 are provided. Even if there is a difference in the inclination angle of each of the brackets 24, the bracket 24 is pulled with the same force because both ends of one long spring 50 are inclined to the bracket 24. Therefore, the normal force of the pickup roller 5 against the paper sheet 4 works uniformly.

[0020]

As described above in detail, according to the present invention, a plurality of pickup rollers for pressing out the uppermost sheets stacked on the vertically movable stage of the storage section and feeding the sheets. A plurality of feed rollers for feeding paper sheets fed by the pickup roller to the next site; a separation roller disposed opposite the lower side of the feed roller; and a shaft to which the pickup roller is attached. And a motor for rotating a shaft on which the feed roller is mounted, and a shaft of the feed roller is rotatably mounted at one end, and a shaft of the pickup roller is tilted at the other end in a vertical direction with respect to the shaft of the feed roller. A plurality of brackets attached to the brackets, and one end attached to each of the plurality of brackets; And a spring for urging the pickup roller in the direction of pressing the sheet through a plurality of brake members for pressing the sheet near the pickup roller. Since a spring for urging the brake member in the direction of pressing the paper sheet is attached to each of the plurality of brake members, a braking force for constantly correcting the difference in the feed-out force of the pickup roller and keeping the same constant. Can be added to paper sheets.

This makes it possible to make the feeding force of the plurality of pickup rollers constant, to eliminate the problem that the pressing force of the plurality of pickup rollers becomes uneven, and the paper sheet is fed obliquely. There is an effect of providing a sheet separating / feeding device with high operation reliability. Also,
A plurality of pick-up rollers for pressing out the uppermost sheets stacked on the vertically movable stage of the storage unit and feeding the sheets, and moving the sheets fed by the pick-up rollers to the next part. A plurality of feed rollers for feeding, a separation roller disposed opposite the lower side of the feed roller, a motor for rotating a shaft to which the pickup roller is attached and a shaft to which the feed roller is attached, and one end. A pair of brackets to which a shaft of the feed roller is rotatably mounted, and a shaft of the pickup roller is mounted to the other end so as to be vertically inclined with respect to the shaft of the feed roller, and each of the pair of brackets Attach one end to
A sheet separating / feeding device having a spring for urging the pickup roller on the pickup roller through the bracket in a direction of pressing the sheet, wherein one long spring as the spring; A plurality of pulleys that support the length spring, and a support portion that rotatably supports the pulley, each end of the long spring,
Since it is attached to the bracket, it is possible to provide a structure in which there is no difference in the feeding force of the pickup roller beforehand.

This makes it possible to make the feeding force of the plurality of pickup rollers constant, to eliminate the problem that the pressing force of the plurality of pickup rollers becomes uneven, and the paper sheet is fed obliquely and fed. There is an effect of providing a sheet separating / feeding device with high operation reliability.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a front view showing a main part of the first embodiment of the present invention.

FIG. 3 is a side view showing a main part of the first embodiment of the present invention.

FIG. 4 is a plan view showing a main part of the first embodiment of the present invention.

FIG. 5 is a perspective view showing a second embodiment of the present invention.

FIG. 6 is a front view showing a main part of a second embodiment of the present invention.

FIG. 7 is a side view of a main part showing a second embodiment of the present invention.

FIG. 8 is a perspective view showing a conventional example.

FIG. 9 is a front view of a main part showing a conventional example.

FIG. 10 is a side view of a main part showing a conventional example.

[Explanation of symbols]

 5 Pickup roller 24 Bracket 28L, 28R Spring 29 Brake member 33L, 33R Brake spring 50 Long spring 51 Pulley 52 Support

Claims (2)

(57) [Scope of request for utility model registration] 1. A plurality of pickup rollers for pressing out uppermost sheets stacked on a vertically movable stage of a storage unit to feed out the sheets, and a sheet fed by the pickup rollers. A plurality of feed rollers for feeding to the next part; a separation roller disposed opposite to the lower side of the feed roller; and a shaft for attaching the pickup roller and a shaft for attaching the feed roller. A motor; a plurality of brackets having, at one end, a shaft of the feed roller rotatably mounted, and, at the other end, a shaft of the pickup roller mounted so as to be vertically inclined with respect to the shaft of the feed roller; One end is attached to each of the plurality of brackets, and the pickup roller is A sheet separating / feeding device including a spring for urging the sheet in a direction to press the sheet, a plurality of brake members for pressing the sheet in the vicinity of the pickup roller; A sheet separating / feeding device, wherein a brake spring for urging a sheet in a direction to press the sheet is attached to each of the plurality of brake members. 2. A plurality of pick-up rollers for pressing out uppermost sheets stacked on a vertically movable stage of a storage unit to feed out the sheets, and for picking up the sheets fed by the pickup rollers. A plurality of feed rollers for feeding to the next part; a separation roller disposed opposite to the lower side of the feed roller; and a shaft for attaching the pickup roller and a shaft for attaching the feed roller. A pair of brackets having, at one end, a shaft of the feed roller rotatably mounted, and a shaft of the pickup roller mounted at the other end so as to be vertically inclined with respect to the shaft of the feed roller; One end is attached to each of a pair of brackets, and the pickup roller is deposited through the brackets A sheet separating / feeding device including a spring that urges the sheet in a direction to press the sheet, wherein one long spring as the spring, a plurality of pulleys supporting the long spring, And a support portion rotatably supporting the pulley, wherein both ends of the long spring are respectively attached to the bracket.