JPH07309467A - Paper sheet separating feeding device - Google Patents

Abstract

PURPOSE:To obviate the necessity of providing a driving means in a device so as to individually drive plural adjusting screws, miniaturize and reduce the weight of the device by adjusting a meshing quantity between delivery rollers and separating rollers by individually driving the adjusting screws according to an adjusting quantity stored in a storage means. CONSTITUTION:A rotational quantity of a pulse motor 58 arranged in an actuator part 57 is calculated according to travel data equivalent to N sheets to be separated and fed, and this calculated result is stored in a storage circuit 37. The rotational quantity of the pulse motor 58 to a paper sheet separating feeding device having the actuator part 57 is taken out of the storage circuit 37 by a control circuit 38. The pulse motor 58 is driven by a regulative quantity according to the rotational quantity taken out of this storage circuit 37, and an adjusting screw 50a is vertically moved through a motor gear 59 and an input gear 56, and a meshing quantity between delivery rollers 8a and 8b and separating rollers 12a and 11b is adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is incorporated in an automatic depositing / dispensing machine, an optical reader, etc., and is a paper sheet such as a bill, an original or a paper stored in a storage section (hereinafter referred to as a paper sheet). The present invention relates to a paper sheet separating / feeding device that separates and feeds one sheet by one by the cooperation of a plurality of types of rollers.

[0002]

2. Description of the Related Art FIG. 6 is a partially cutaway perspective view showing a conventional sheet separating and feeding apparatus of this type, and FIG. 7 is a side view thereof. In the figure, reference numeral 1 denotes a storage portion, which has a guide plate portion 2 at a front end portion thereof, and a bottom portion which is a stage 3 movable up and down.

Reference numeral 4 is a sheet stored in the storage unit 1 in the form of being deposited on the stage 3. A pickup roller 5 is provided with a high-friction member 6 having a sufficient frictional force for feeding and feeding the sheet 4 on a part of the outer periphery thereof.
For example, two pieces are fixed to the shaft 7 at a predetermined interval so as to be pressed against the uppermost part of the paper sheet 4. The stage 3 of the storage unit 1 is moved up and down by a drive mechanism (not shown) including a spring and a solenoid, so that the uppermost sheet 4 can be pressed against the pickup roller 5 by raising the stage 3. It has become.

Reference numerals 8a and 8b denote feeding rollers, which have a high friction member 9 on a part of the outer circumference like the pickup roller 5 and have a ring-shaped groove 10 extending over the entire circumference.
Are installed side by side. And this feeding roller 8
Two a and 8b are fixed to a shaft 11 provided in parallel with the shaft 7 at a predetermined interval, and are arranged on the front end side of the storage part 1 so as to be arranged above the guide plate part 2. ing.

Denoted at 12a and 12b are separating rollers, each having a ring-shaped groove 13 extending over the entire circumferential direction. The separating rollers 12a and 12b are attached to a shaft 29 located below the guide plate 2. It is attached to a shaft 15 provided on rotatably supported holding members 28a and 28b at the same interval as the feeding rollers 8a and 8b, and a part of the outer peripheral surface of the guide plate portion 2 is provided. Projecting upward from a through hole (not shown) provided in the above, and meshed with the feeding rollers 8a and 8b by a predetermined amount by the grooves 10 and 13 of each other.

Reference numeral 17 is a pulley attached to one end of the shaft 11, 18 is a motor, 19 is a drive pulley attached to the rotating shaft of the motor 18, and 20 is the pulley 1
7 and the drive pulley 19.
Reference numeral 21 is a pulley attached to the other end of the shaft 11, and 22 is a shaft 7 corresponding to the pulley 21.
Is attached to the pulley, and 23 is both the pulleys 21 and 2
It is a belt wound around two, and when the motor 18 is rotated in a predetermined direction, the rotational force thereof is a driving pulley 19
And is transmitted to the pulley 17 via the belt 20, whereby the payout rollers 8a, 8b and the pulley 21 rotate integrally with the shaft 11 in the direction of arrow a. And the pulley 21
The rotational force is transmitted to the pulley 22 from the belt via the belt 23, whereby the pickup roller 5 rotates integrally with the shaft 7 in association with the feeding rollers 8a and 8b. At this time, the two pulleys 21 and 22 are structured to rotate at the same number of revolutions, respectively, whereby the pickup roller 5 and the feeding rollers 8a and 8b are
In the same direction as indicated by the arrow a, that is, the paper sheet 4 is stored in the storage unit 1.
It rotates in the direction to feed from.

On the other hand, a one-way clutch (not shown) is provided between the separating rollers 12a, 12b and the shaft 15, and the separating rollers 12a, 12b are driven by a motor (not shown) or the like as shown by an arrow b. 4 can be rotated only in the direction of pushing back to the storage unit 1 side, and the frictional force of the separating rollers 12a and 12b against the sheet 4 is the sheet 4 of the high friction members 6 and 9 in the pickup roller 5 and the feeding rollers 8a and 8b. It is set to be smaller than the frictional force against.

Reference numeral 24 is a pair of brackets for supporting the shaft 7, each of which has a projecting piece 24a projecting upward at a predetermined position on the upper side, and one end of each of the brackets 24 is It is rotatably attached to the shaft 11 via a bearing 25 so as to be positioned on both outer sides of the feeding rollers 8a and 8b, and rotatably supports the shaft 7 at the other end via a self-aligning bearing 26. As a result, the shaft 7 can move vertically with respect to the shaft 11 and can be tilted by a predetermined amount.

Reference numeral 27a denotes a post formed so as to project inward from a frame 27 that rotatably supports the shaft 11. The post 27 is lowered by the projection piece 24a of the bracket 24 hitting the post 27. The rotation angle of the bracket 24 is restricted. In the figure, a frame 2 provided on one side of the storage unit 1
Although only 7 is shown, a frame is provided on the other side of the housing 1 so as to form a pair with the frame 27, and a post similar to the post 27a is formed.

Reference numeral 34 denotes a support plate provided below the holding members 28a and 28b, and the support plate 34 is a leaf spring as a biasing means for biasing one end of each of the holding members 28a and 28b upward. 33 is fixed, and by the urging force of the leaf spring 33, a part of the outer circumference of the separating rollers 12a and 12b protrudes from the through hole provided in the guide plate portion 2 to the upper surface side and the feeding rollers 8a and 8b. And mutual groove 1
It is made to mesh with 0 and 13.

Reference numerals 30a and 30b are pulse motors, 31 is a gear wheel axially supported by the pulse motors 30a and 30b, and 32 is a gear.
Reference numerals a and 32b are adjusting screws meshing with the gear 31 at the gear portion. The adjusting screws 32a and 32b are screwed to the support plate 34 so that the tips of the adjusting screws 32a and 32b come into contact with the lower surfaces of the other ends of the holding bodies 28a and 28b. The pulse motors 30a, 3
When a rotational force is received from the gear 31 attached to each of 0b, the force is converted into vertical movement. Therefore, the holders 28a, 28b move the adjusting screws 32a, 32b up and down via the gear 31 by the rotation of the pulse motors 30a, 30b, thereby moving the shaft 2
It is rotated around 9 and the amount of meshing between the feeding rollers 8a and 8b and the separation rollers 12a and 12b is changed by this rotation.

Next, the control system of the above-described sheet separating and feeding apparatus will be described with reference to the block diagram showing the control system of FIG.
In the figure, reference numeral 35 denotes a travel monitoring sensor arranged on a transport path for transporting the paper sheet 4 fed out from the storage unit 1 to a processing system for the next process, and is a sensor for passing the paper sheet in a direction perpendicular to the paper sheet traveling direction. It is composed of a light emitting element and a light receiving element which are arranged in two pairs on the right and left sides with a certain distance therebetween.

Reference numeral 36 is a double-feeding detecting section arranged on the conveying path similarly to the traveling monitoring sensor 35, and is "1" if the thickness of the conveyed sheet 4 is one sheet, and is 2 or more sheets. "2", and if there is no paper sheet 4, "0" is output. 37 is a storage circuit for storing information and the like from the traveling monitoring sensor 35 and the double feed detecting section 36, and 38 is a control circuit. The control circuit 38 outputs signals from the traveling monitoring sensor 35 and the double feed detecting section 36. Processing and storage circuit 3
Data is exchanged with the pulse motor 3
It serves as a control means for driving and controlling 0a and 30b.

Reference numeral 39 is an operation keyboard, and 40 is a keyboard control unit for sending the input data from the operation keyboard 39 to the control circuit 38. The device administrator inputs data from the operation keyboard 39 to arbitrarily feed the feeding roller. It is possible to instruct the adjustment of the meshing amount of the separation rollers 12a and 12b with the separation rollers 8a and 8b. The operation of the above configuration is as follows.

First, when a drive mechanism (not shown) also raises the stage 3 of the storage unit 1 by a control circuit (not shown), the uppermost sheet 4 on the stage 3 comes into pressure contact with the pickup roller 5. At this time, if the paper sheet 4 is bent or the like or the stage 3 is inclined, the uppermost paper sheet 4 is inclined with respect to the peripheral surface of the pickup roller 5.

However, since both ends of the shaft 7 are supported by the brackets via the self-aligning bearings 26, when the inclined uppermost sheet 4 comes into contact with the pickup roller 5, the shaft 7 is shown in FIG. As shown, the pickup roller 5 tilts following the inclination of the paper sheet 4 and, at the same time, the bracket 24 rotates upward about the shaft 11 so that the shaft 7 is also parallel to the uppermost surface of the paper sheet 4. Thus, the pickup roller 5 always comes into contact with the uppermost surface of the sheet 4 perpendicularly. Therefore, the vertical drag force of the pickup roller 5 on the paper sheet 4 acts uniformly.

If the paper sheet 4 has no creases and the stage 3 is not inclined and the uppermost paper sheet 4 is horizontal, the paper sheet 4 is pressed against the peripheral surface of the pickup roller 5. At this time, the vertical drag force of the pickup roller 5 on the sheet 4 works uniformly. In this state, when the motor 18 rotates according to an instruction from the control circuit, the rotational force of the motor 18 passes through the drive pulley 19 and the belt 20 as described above.
7, the feeding rollers 8a, 8b and the pulley 21 rotate integrally with the shaft 11 in the direction of the arrow a, and the rotational force of the pulley 21 is further transmitted to the pulley 22 via the belt 23. As a result, the pickup roller 5 is also rotated integrally with the shaft 11 in the direction of arrow a in conjunction with the feeding rollers 8a and 8b.

At this time, the separating rollers 12a and 12b
Also rotates in the direction of arrow b by a motor or the like not shown. Therefore, when the pickup roller 5 rotates, the uppermost paper sheet 4 is fed forward due to the frictional force between the pickup roller 5 and the high friction member 6 provided on the outer peripheral portion thereof, and the tip of the paper sheet 4 is fed out. 8a, 8b and separation rollers 12a, 1
2b, and the feeding rollers 8a, 8
By the rotation of b, the feeding force in the direction of arrow c is received by the frictional force with the high friction member 9 provided on the outer peripheral portion thereof.

At this time, at the same time, the paper sheet 4 is accommodated by the separating rollers 12a and 12b rotating in the direction of the arrow b.
A force for pushing back to the side is applied, but this separating roller 12
Since the frictional force of a and 12b with respect to the paper sheet 4 is smaller than the frictional force of the high friction member 9 with respect to the paper sheet 4, the paper sheet 4 follows the arrow along the guide plate portion 2 as the feeding rollers 8a and 8b rotate. The paper sheet 4 is delivered in the c direction, and the delivered paper sheet 4 is delivered to the processing system of the next step by a delivery path made up of rollers, belts and the like (not shown).

The paper sheet 4 fed out by the rotation of the pickup roller 5 is not limited to the uppermost paper sheet, but the paper sheets 4 come into close contact with each other due to various factors, and together with the uppermost paper sheet 4, The lower paper sheet 4 may be sent to the feeding rollers 8a and 8b side in an overlapping state or a chained state. In this case, since the separation rollers 12a and 12b are meshed with the feeding rollers 8a and 8b, and the separation rollers 12a and 12b are always rotating in the direction of the arrow b, that is, in the direction of pushing back the sheet 4 to the side of the storage section 1. , The sheets 4 other than the uppermost one are stopped by the separating rollers 12a and 12b, and the uppermost one, that is, the feeding rollers 8a and 8b.
Only the sheet 4 that is in direct contact with the sheet can be fed out in the direction of arrow c.

Next, the adjustment of the meshing amount of the feeding rollers 8a and 8b and the separation rollers 12a and 12b, which influences the separation performance, will be described with reference to the flow chart of FIG.
In the following description, for the sake of convenience, of the two feeding rollers 8 attached to the shaft 11,
In the feeding direction (direction of arrow c) of the paper sheet 4, the left-hand feeding roller is 8a, the right-hand feeding roller is 8b, and the separation rollers meshing with this are similarly 12a, 12b.
I am trying. Further, S in the drawing indicates a processing step, which will be described below according to this processing step.

First, the operation keyboard 39 is used to specify the number N of sheets to be fed out, and at the same time, the automatic adjustment key is pressed or an instruction is executed (S1). In response to this instruction, the control circuit 38 starts control to rotate the motor 18. By this rotation, the feeding rollers 8a and 8b and the pickup roller 6 are rotated, and the separating rollers 12a and 12b are driven by a motor (not shown), so that the storage unit 1
The paper sheets 4 accumulated on the stage 3 are sequentially fed out from the top (S2).

While being fed toward the processing system of the next process, the fed-out paper sheet 4 passes between two pairs of the light emitting and light receiving elements of the traveling monitoring sensor 35, and the traveling angle is detected from the timing of the passage. At the same time, the traveling interval of each sheet 4 is detected to detect the presence or absence of skew, the normality or the chain, and the defective feeding. Then, the paper sheet 4 that has passed through the traveling monitoring sensor 35 next passes through the double feed detection unit 36, and at the time of the passage, it is detected whether or not it is double fed.

The traveling monitoring sensor 35 and the double feed detecting section 36
The output of is read by the control circuit 38 for each sheet 4 as detection data and stored in the storage circuit 37 (S
3). The control circuit 38 counts up a feed number counter (not shown) each time the sheet 4 is fed from the storage unit 1, and the count value is a predetermined number N (1
It is determined whether the number of sheets has reached the number of sheets or more) (S4). If the number of sheets has not reached N, the feeding operation is continued.

When the number of sheets reaches N, the feeding operation is stopped, and processing such as averaging of the data stored in the storage circuit 37 is performed (S5). Next, the traveling condition 1 of the paper sheet 4 is determined based on the processed data. The content of the determination at this time is either abnormal due to double feed, chain, feeding failure or normal. The data of the skew is not handled here (S6).

If it is determined to be normal, S1 to be described later will be described.
However, when it is determined that there is an abnormality due to double feeding, chaining, or feeding failure, the current processing data and the previous processing data are compared (S7), and the feeding rollers 8a and 8b and the separation rollers 12a and 12b are compared. Pulse motors 30a. The rotation amount of 30b is calculated (S
8).

As a calculation method in this case, each pulse motor 30a. It can be obtained from the relationship between the rotation amount of 30b and the processing data of the traveling monitoring sensor 35 and the double feed detection unit 36. That is, specifically, a relationship is derived from the previous processing data to what extent the pulse motors 30a and 30b rotate, and to what extent the traveling situation changes, and how much the pulse motors 30a and 30b should be rotated this time is calculated. To do.

Although not shown in FIG. 9, for the first adjustment without previous data, a table is created from general data collected in advance, and the rotation amount based on this table is used as the pulse motors 30a, 30b. Should be given to. When the rotation amounts of the pulse motors 30a and 30b are calculated, the control circuit 38 next determines the traveling situation 2 (S
9). The content of the determination at this time is determination as to whether there is a double feed, a chain, or a feeding failure.

In the determination of the traveling condition 2, when it is determined that the mesh feed is a double feed or a chain, the double feed and the chain are generally liable to occur when the meshing amount is small. Therefore, the control circuit 38 determines the meshing amount. The pulse motors 30a and 30b are calculated by the above-described method in the increasing direction.
Is rotated (S10). This pulse motor 30a, 3
The rotational force of 0b is adjusted by the adjusting screw 32 through the gear 31.
to the adjusting screws 32a, 3b.
Since the amount of protrusion of 2b from the support plate 34 is reduced, the holding members 28a and 28b are rotated about the shaft 29 by the urging force of the plate spring 33 in the direction of pushing up the separation rollers 12a and 12b, and as a result, the feeding rollers are extended. 8a, 8b
And the amount of meshing between the separation rollers 12a and 12b increases.

When the process of S6 or S10 is completed, the control circuit 38 subsequently determines the traveling condition 3 (S1).
1). The content of the determination at this time is to determine whether the paper sheet 4 is running normally without being skewed, or whether the paper sheet 4 is skewed and the skew is left leading or right leading. Here, if it is determined to be normal, the process proceeds to S26 to be described later, but if it is determined to be the skew of the left leading or the right leading, the current processing data of the traveling monitoring sensor 35 is regarded as the previous processing data. After comparison (S12, S15), the rotation amount of the pulse motor 30a or 30b is calculated by the same method as described above (S13, S16).

Generally, when the meshing amount of the left-side feeding roller 8a and the separating roller 12a is smaller than the meshing amount of the right-side feeding roller 8b and the separating roller 12b, there is a relation that the skew of the left leading side is generated, and therefore the left leading side. In the case of skew, the left-hand feeding roller 8a
In the direction of increasing the meshing amount of the separation roller 12a and the separation roller 12a, only the pulse motor 30a is rotated by the amount calculated by the above method (S14). Similarly, only the pulse motor 30b is rotated in the direction of increasing the meshing amount of 12b (S17).

On the other hand, if it is determined in S9 that the delivery is defective, the delivery is generally less likely to occur when there is a large amount of meshing between the delivery rollers 8a and 8b and the separation rollers 12a and 12b. The pulse motors 30a and 30b are rotated in the direction by the amount calculated by the above method (S18). The rotational forces of the pulse motors 30a and 30b at this time are transmitted to the adjusting screws 32a and 32b via the gears 31 respectively, as described above, whereby the support plate 3 for the adjusting screws 32a and 32b is provided.
Since the amount of protrusion from 4 increases and presses the other ends of the holding members 28a, 28b from below, the holding members 28a, 28b
b rotates around the shaft 29 in a direction to push down the separation rollers 12a and 12b against the biasing force of the leaf spring 33,
As a result, the feeding rollers 8a and 8b and the separation roller 12 are
The amount of meshing between a and 12b is reduced.

When the process of S18 is completed, the control circuit 38 determines the traveling condition 4 (S19). The determination content at this time is the same as in S9, that is, whether the paper sheet 4 is running normally without skewing or whether the paper sheet 4 is skewing and the skew is left leading or right leading. . If it is determined to be normal, the next step is S
However, if it is determined that the skew is left leading or right leading, the current processing data of the travel monitoring sensor 35 is compared with the previous processing data (S20, S23),
The rotation amount of the pulse motor 30a or 30b is calculated by the same method as described above (S21, S24).

In the case of the left leading skew, only the pulse motor 30b is rotated by the amount calculated by the above method in the direction to reduce the meshing amount between the right feeding roller 8b and the separating roller 12b (S22), and vice versa. In the case of the skew leading to the right, only the pulse motor 30a is similarly rotated in the direction in which the amount of meshing between the feeding roller 8a on the left side and the separation roller 12a is reduced (S25).

In this way, each traveling condition of the paper sheet 4 is determined, and as a result, if all traveling conditions are normal, that is, if adjustment is not necessary, immediately after that, skew, double feeding, If there is a chain or feeding failure,
As described above, the feeding rollers 8a and 8b and the separating roller 12
After adjusting the meshing amount of one or both of a and 12b, the control circuit 38 stores the previous rotation amounts of the pulse motors 30a and 30b stored in the storage circuit 37, the travel monitoring sensor 35, and the double feed detection unit 36. The detection data is updated to the current rotation amount and the detection data (S26), and the value of the feeding number counter (not shown) is cleared to "0" (S2).
7) Then, the operation of feeding the sheet 4 out of the storage section 1 is resumed.

Since the above operation is performed at a high speed,
Even when N sheets or more are fed out, the operation can be continuously performed without interruption. In the above description, the pulse motors 30a and 30b are used as the drive sources of the adjusting screws 32a and 32b, but the same adjustment can be performed by using a piezoelectric element or the like.

[0037]

However, the above-mentioned conventional technique has some problems as described below. Normally, the adjustment of the meshing amount as described above is
(1) Initial adjustment when the device is assembled at the factory, (2) Readjustment when the meshing amount decreases due to wear of the roller part after it is installed at the operation site and started operation To be

However, in recent years, regarding the readjustment due to wear of the roller portion in the above item (2), the wear resistance of the separating roller and the feeding roller is improved, and the separating portion using a material having a high rubber hardness is used. Due to the configuration, readjustment at the operation site is only performed about a few times during the lifetime operation period. Therefore, in order to perform automatic adjustment that is performed only a few times, it is necessary to equip the sheet separating and feeding apparatus with an actuator that serves as a drive unit for adjustment, resulting in an increase in size and cost of the apparatus. There was a problem that I would end up.

The present invention has been made to solve the above-mentioned problems, and a plurality of driving means for individually driving the adjusting screws for adjusting the meshing amount due to wear of the roller portion at the time of assembling the apparatus are provided. Providing a compact and low-cost sheet separating / feeding device that prevents the device from increasing in size and cost, which would otherwise be caused by what must be provided, and enables the adjusting screw to be driven without this driving means. The purpose is to do.

[0040]

In order to achieve the above-mentioned object, the present invention provides a plurality of pickup rollers which are brought into pressure contact with the uppermost position of a plurality of paper sheets accumulated on a vertically movable stage. A plurality of feeding rollers coaxially supported so as to be positioned on the front end side of the feeding direction of the paper sheets, and the paper sheets fed out by the pickup roller by meshing with the feeding rollers at the lower side in the stage direction. A plurality of separating rollers that rotate in the direction of pushing back to each other, a rotatable holding member that independently holds the plurality of separating rollers, and the holding rollers that individually rotate to hold the separating rollers in mesh with the feeding rollers. A plurality of adjusting screws provided for each holding member to change the amount, driving means for individually driving the adjusting screws, and feeding from the stage. Detecting means for detecting leaf skew, chain, feeding failure, and double feeding, and calculating the adjusting amount of the adjusting screw based on the detection data obtained by the detecting means, and driving the driving in accordance with the calculated adjusting amount. In the paper sheet separating / feeding device including a control unit that drives the adjusting screw to rotate the holding member by controlling the means, and adjusts the meshing amount of the feeding roller and the separating roller, The driving means for driving is configured to be detachable from the outside of the apparatus, and a storage means for storing the adjustment amount of the adjusting screw calculated by the control circuit is provided, and the paper sheet fed out from the stage is stored. When it is determined that the adjusting screw needs to be adjusted based on the detection result of the detecting means, the driving means is attached to the apparatus to perform the above-mentioned operation. Is obtained so as to adjust the engagement of said feeding and driving the adjusting screw individually roller by said drive means in accordance with the adjustment amount that has been stored and the separation roller means.

[0041]

According to the above-described structure, when the feeding of the paper sheets is started from the stage, the conveyance state is detected, the control circuit calculates the adjustment amount of the adjustment screw based on the detection data, It is stored in the storage means. After that, when the drive means is mounted at a predetermined position of the device frame by the alignment means provided in the drive means, the connection means, etc., the adjustment amount stored in the storage means is taken out by the control circuit. The control circuit drives and controls the drive source of the drive means according to the extracted adjustment amount.

In this way, when the drive source subjected to the drive control starts to rotate by the specified amount, the rotational force is transmitted to the input gear provided on the apparatus main body side through the drive source gear provided on the drive means, and The worm gear is rotated via the shaft supporting the input gear, and the rotational force is transmitted to the adjusting screw meshing with the worm gear, thereby rotating the holding member. Adjust the amount of meshing between the delivery roller and the separation roller.

[0043]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the paper sheet separating and feeding apparatus of the present invention, FIG. 2 is a side view of a main portion of FIG. 1, FIG. 3 is a plan view of the vicinity of a separation roller in FIG. 2, and FIG. FIG. 5 is a perspective view of the quantity adjusting control means, and FIG. 5 is a block diagram showing a control system.

In this embodiment, only the structure of the mechanical portion for adjusting the meshing amount is different from the above-mentioned conventional example, and other parts and structure are almost the same as the conventional example. The same reference numerals are given and the description of the configuration and operation thereof is omitted here. 1 to 5
In the drawing, 50a and 50b are feeding rollers 8a and 8b for feeding the paper sheet 4 from the storage portion, and the feeding rollers 8a and 8b.
The adjusting screws 50a, 50 are adjusting screws for adjusting the engaging amount with the separating rollers 12a, 12b arranged so as to engage with each other by a predetermined amount under the a, 8b.
As shown in FIG. 2, b is composed of a screw portion and a gear portion, and the tip of the screw portion has the separation rollers 12a, 1a.
2b is screwed to the support plate 34 so as to make point contact with the lower surfaces of the other ends of the holders 28a and 28b supporting one end of the holding member 28b. By rotating the gear portion, the entire adjusting screw can be vertically moved. It has become. In addition, this adjustment screw 50
The operation of a and 50b, that is, the rotation of the gear portion causes the entire adjustment screw to move up and down, and the holder 28 is held at the tip of the screw portion.
The operation of adjusting the amount of engagement between the separation rollers 12a and 12b and the feeding rollers 8a and 8b by raising or lowering the other ends of a and 28b is almost the same as that of the adjusting screw described in the conventional example. ing.

Rotation preventing springs 51a and 51b prevent rotation of the adjusting screws 50a and 50b by an urging force of a leaf spring 33 which is supported by a supporting plate 34 and is pressed against lower ends of the holding bodies 28a and 28b. In order to do so, the adjusting screws 50a and 50b are fixed to the lower surfaces of the holding bodies 28a and 28b so as to fit in the tooth spaces of the gears. 52a,
Reference numeral 52b is a worm gear that meshes with the gear portions of the adjusting screws 50a and 50b, and 53a and 53b are the worm gears 5.
A shaft that axially supports 2a and 52b, one end of which is rotatably supported by projecting to both outsides of the device frames 54a and 54b.

55a and 55b are the shafts 53a and 5
A bracket that rotatably supports the other end of 3b and is fixed to the holding plate 34. Also 56a, 5
Reference numeral 6b denotes an input gear attached to the ends of the shafts 53a and 53b projecting outward from both sides of the device frames 54a and 54b. As shown in FIG. 3, the input gear 6b is exposed on the surface of the sheet separating and feeding device. It has been configured.

Reference numeral 57 indicates the feed rollers 8a and 8b and the separating roller 1 by rotationally driving the input gears 56a and 56b.
Adjusting screw 50 to adjust the amount of engagement with 2a, 12b
The actuator unit 57 is a drive unit for driving a and 50b. The actuator unit 57 is a pulse motor 58 serving as a drive source and a drive unit that is attached to the pulse motor 58 and meshes with the input gears 56a and 56b. A motor gear 59 as a source gear, a substantially box-shaped joint bracket 60 formed so as to cover the pulse motor 58, and a plurality of guides for attaching the joint bracket 60 to predetermined positions of the device frames 54a and 54b. A joint post 61 as a positioning means, a motor control section 62 as a drive source control section for driving and controlling the pulse motor 58, and a connector projection 63 as a connecting means of the motor control section 62. It is configured to be attachable to and detachable from the main body of the apparatus.

Further, on the device side, the driving force of the actuator section 57 is input through the motor gear 59 to the input gear 56.
When the actuator portion 57 is connected to the device frames 54a and 54b for transmission to the device frames 54a and 54b, a plurality of joint holes 64 are fitted to the joint posts 61 and serve as alignment receiving means. 54
b, and the actuator portion 57 is formed.
A connector recess 65 is provided inside the device as a connection receiving means for connecting with the connector protrusion 63 provided on the side to electrically connect with the control circuit 38 on the device body side.

Although FIG. 3 and FIG. 4 show the actuator portion 57 arranged only on one of the device frames 54a and 54b, the actuator portion 57 has a detachable structure so that one Input gear 5
6a is used for adjustment, and then the other input gear 56b is similarly used for adjustment.

The actuator section 5 having the above-mentioned structure
The mounting operation of No. 7 will be described below. First, of the pair of adjusting screws 50a and 50b, the device frame 5 corresponding to one of the adjusting screws 50a to be adjusted first, for example.
On the 4a side, the joint post 61 protruding from the joint bracket 60 of the actuator portion 57 is fitted into the joint hole 64 formed in the device frame 54a, and the connector projection 63 is fitted into the connector recess 65. As a result, the motor gear 59 attached to the pulse motor 58 provided in the actuator unit 57 meshes with the input gear 56a exposed to the outside from the device frame 54a, whereby the actuator unit 57 is attached to the device.

When the pulse motor 58 is rotated in this state, the rotational force is transmitted to the input gear 56a via the motor gear 59, and the shaft 53a and the worm gear 52a rotate integrally with the rotation of the input gear 56a, With this rotation, the adjusting screw 5 is passed through the worm gear 52a.
The rotational force is transmitted to 0a, the amount of rotation is converted into vertical movement by the screw portion, and the amount of meshing between the feeding rollers 8a and 8b and the separation rollers 12a and 12b can be changed.

Next, the operation of adjusting the meshing amount will be described. First, when the user presses the automatic adjustment key or instructs the operation keyboard 39 to execute a command, the separating / feeding device feeds the sheet 4 by the predetermined number N of sheets to be fed. Then, the traveling data for N sheets that have been separated and fed, that is, each data such as double feed, skew, and approach are obtained.

The rotation amount of the pulse motor 58 provided in the actuator section 57 is calculated based on the traveling data thus obtained, and the calculated result is stored in the storage circuit 37. Then, based on the mounting operation of the actuator unit 57, the actuator unit 57 is mounted on either the left or right device frame 54a or 54b of the device.

As a result, the control circuit 38 provided in the paper sheet separating / feeding device takes out the rotation amount of the pulse motor 58 with respect to the paper sheet separating / feeding device to which the actuator section 57 is attached from the storage circuit 37. . Then, according to the rotation amount taken out from the storage circuit 37, the pulse motor 5
8 is driven by a specified amount, and the motor gear 59 and the input gear 56
The adjusting screw 50a is moved up and down via a or the like to adjust the amount of meshing between the feeding rollers 8a and 8b and the separating rollers 12a and 12b. A table is provided in the control circuit 38, the storage circuit 37 or the like for the relationship between the double feeding or skew of the sheet 4 and the rotation amount of the pulse motor 58, and the rotation amount can be derived from this table. . The method of calculating the rotation amount, the rotation direction, and the like has been described in the conventional example, and therefore will be omitted here.

When the driving of the pulse motor 58 of the specified amount is completed, the actuator section 57 is removed from the apparatus frame 54a. On the other hand, that is, when the adjustment of the device frame 54b is required, the actuator portion 57 is mounted again on the device frame 54b side through the joint post 61 and the connector protrusion 63, and the device frame 5b.
The amount of meshing is adjusted in the same manner as the 4a side. As a result, the adjustment of the amount of meshing between the feeding rollers 8a and 8b and the separating rollers 12a and 12b, which are arranged in a pair, on the left and right sides is completed. It should be noted that each of these adjustment operations may, of course, adjust only one of the left and right sides, and is for adjusting only the place where adjustment is determined to be necessary. This is carried out by operating 39.

[0056]

As described above, according to the present invention, a plurality of pickup rollers pressed against the uppermost of a plurality of paper sheets accumulated on a vertically movable stage, and the paper sheets. A plurality of feeding rollers coaxially supported so as to be located on the front end side in the feeding direction, and a direction in which the paper sheets fed by the pickup roller that are meshed with the feeding rollers at the lower part are pushed back in the stage direction. A plurality of rotating separation rollers, a rotatable holding member that independently holds the plurality of separation rollers, and each of the holding members are individually rotated to change the amount of meshing of the separation roller with the feeding roller. Therefore, a plurality of adjusting screws provided for each holding member, a driving means for individually driving the adjusting screws, and a skew of the sheet fed out from the stage. Detecting a chain, a feeding failure, and a double feed, and calculating an adjustment amount of the adjusting screw on the basis of detection data obtained by the detecting means, and controlling the drive unit in accordance with the calculated adjustment amount. In the paper sheet separating / feeding device provided with the control means for driving the adjusting screw to rotate the holding member to adjust the meshing amount of the feeding roller and the separating roller, a driving means for driving the adjusting screw is provided. A storage unit for storing the adjustment amount of the adjustment screw calculated by the control circuit, which is configured so as to be detachable from the outside of the apparatus, and the conveyance status of the paper sheet fed out from the stage is When it is determined that the adjustment screw needs to be adjusted based on the detection result of the detection means, the drive means is attached to the device so that the storage means stores it. And to adjust the engagement of the roller feed by driving the adjusting screw to the individual and the separation roller by said drive means in accordance with the adjustment amount it is.

Therefore, it is not necessary to provide a plurality of driving means for individually driving the plurality of adjusting screws in the apparatus, and the space for providing the plurality of driving means can be reduced. It is possible to realize the reduction in size and weight. Further, since the driving means is detachable from the outside of the apparatus, it is necessary to provide a plurality of devices in the related art, but according to the present application, only one driving means is required, and the one driving means is sequentially mounted at a plurality of necessary places. Since adjustment is possible by doing so, the number of parts can be reduced and the price can be reduced.

Further, since the driving means is not incorporated in the apparatus, repair work is easy when a failure or the like occurs in the driving means, and it is not necessary to stop the separation feeding operation of the apparatus. It is also possible to prevent the decrease of

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a sheet separating and feeding apparatus of the present invention.

FIG. 2 is a side view of a main part of FIG.

FIG. 3 is a plan view of the vicinity of the separation roller in FIG.

FIG. 4 is a perspective view of drive means for adjusting the meshing amount.

FIG. 5 is a block diagram showing a control system of this embodiment.

FIG. 6 is a partially cutaway perspective view of a conventional sheet separating and feeding apparatus.

FIG. 7 is a side view of FIG.

FIG. 8 is a block diagram showing a control system of a conventional sheet separating and feeding apparatus.

FIG. 9 is a flowchart showing a procedure for adjusting a meshing amount.

[Explanation of symbols]

 1 Storage Section 4 Paper Leaf 8 Feeding Roller 12 Separation Roller 28 Holding Member 38 Control Circuit 37 Storage Circuit 50a Adjustment Screw 52a Worm Gear 53a Shaft 54a Device Frame 56a Input Gear 57 Actuator 58 Pulse Motor 59 Motor Gear 61 61 Joint Post 62 Motor Control 63 Connector convex 65 Connector concave

Claims (2)

[Claims] 1. A plurality of pickup rollers pressed against the top of a plurality of sheets stacked on a vertically movable stage, and positioned so as to be located on the front end side of the sheet in the feeding direction. A plurality of delivery rollers supported coaxially; a plurality of separation rollers which engage with the delivery rollers at a lower portion and rotate in a direction to push back the paper sheets delivered by the pickup roller toward the stage; A rotatable holding member that independently holds a plurality of separating rollers, and a plurality of holding members that are provided for each holding member to individually rotate the holding members to change the amount of meshing of the separating roller with the feeding roller. Adjusting screw, drive means for individually driving the adjusting screw, and skew, chain, feeding failure, and weight of paper sheets fed from the stage. The adjusting screw is driven by detecting the feed, and calculating the adjusting amount of the adjusting screw based on the detection data obtained by the detecting means and controlling the driving device according to the calculated adjusting amount. In a paper sheet separating / feeding device provided with a control means for rotating a holding member to adjust the meshing amount of the feeding roller and the separating roller, a driving means for driving the adjusting screw is detachable from the outside of the apparatus. In addition to the configuration, a storage unit for storing the adjustment amount of the adjustment screw calculated by the control circuit is provided, and the conveyance status of the paper sheets fed out from the stage is
When it is determined that the adjustment screw needs to be adjusted based on the detection result of the detection unit, the drive unit is attached to the device to drive the drive unit according to the adjustment amount stored in the storage unit. A sheet separating / feeding device, characterized in that the adjusting screw is individually driven by means to adjust the meshing amount of the feeding roller and the separating roller. 2. A drive source in a substantially box-shaped joint bracket, a drive source control section for controlling the drive of the drive source, and a connecting means for connecting the drive source control section to a control circuit provided on the apparatus main body side. A drive source gear that is rotatably driven by the drive source, and a plurality of alignment means for aligning when the joint bracket is mounted at a predetermined position of the apparatus main body By doing so, driving means for driving the adjusting screw for adjusting the meshing amount from the outside of the device is configured, and the positioning receiving means provided on the device frame of the device body is fitted with the positioning means of the driving means. With
By fitting and connecting the connecting means to the fitting receiving / connecting receiving means also provided in the device frame, the drive source gear protruding from the joint bracket of the driving means is meshed with the input gear exposed to the outside of the device frame. Since the rotational force is transmitted to the adjusting screw via the input gear by a worm gear provided coaxially with the input gear, the driving means has a detachable structure in which the adjusting screw can be adjusted from the outside of the device. The paper sheet separating / feeding device according to claim 1, wherein