JP2533524B2 - Paper feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to postcards, envelopes (including so-called postal letters enclosing empty envelopes and documents), various cards, slips, bills (banknotes) Used for payment machines, etc., including a bill-enclosed pack in which a predetermined number of bills are enclosed, a bill-enclosed envelope, etc.), bills, checks, etc., are stacked, and one sheet is collected from the group of stacked sheets. The present invention relates to a paper sheet feeding device for feeding one by one. The term "one sheet" referred to in this specification is a concept including one envelope, one bag containing a bill, and the like, and these are collectively referred to as such.

(Prior Art) Conventionally, as a paper sheet feeding device for feeding out the above-mentioned paper sheets one by one and counting, identifying, and performing other required processing, a part of the paper sheet is in a freely deformable state. The outer surface is brought into contact with the frontmost sheet surface of the accumulated sheet group,
By the endless belt that feeds out the paper sheets by being forcibly swung by the banding imparting means, the posture holding means that holds the belt at a predetermined position by driving the endless belt, and the endless belt. A gate portion that allows only one sheet to be fed out and regulates the feeding of the sheet following the sheet, and a sheet that is driven at a speed higher than the banding speed of the endless belt and passes through the gate portion. And transporting the paper sheet by sandwiching it and transforming the endless belt from the driven feeding posture to the driven feeding posture through the paper sheet, after the endless belt is transformed from the driven feeding posture to the driven feeding posture. A feeding device that intermittently feeds the paper sheets one by one by returning to the driving feeding posture again (Patent Document 1)
No. 60-61427) is known.

(Problems to be Solved by the Invention) However, the above-mentioned conventional technique is a problem particularly when applied to a device for processing paper sheets having different lengths, and the front end of the paper sheet is pinched by the conveying means. Even in this case, the latter half of the paper sheet needs to exist on the stack paper sheet group side of the gate portion, and the distance between the entrance of the transport means and the gate portion is considerably larger than the minimum paper sheet size in the feeding direction. Small On the other hand, when the length of the outer peripheral surface of the endless belt is set to a long dimension corresponding to the paper sheet having the maximum length in the feeding direction, the gate portion, the conveying means inlet, the band movement imparting means or the posture holding means in the driven feeding posture. The flexure of the endless belt formed between the three parts is extremely large, and the flexure cannot be accommodated between the entrance of the conveying means and the gate portion at the above-mentioned distance, which hinders the feeding operation. Therefore, the length of the outer peripheral surface of the endless belt is made shorter than that corresponding to the maximum length of the paper sheet in the feeding direction. In that case, when a paper sheet having a large length in the feeding direction is fed, the deflection that occurs between the gate unit and the charging unit or the posture holding unit in the driven feeding posture becomes maximum, and the maximum bending state continues for a long time. The endless belt and the belt movement imparting means are worn due to the difference in speed, and both are easily worn, and the durability is significantly deteriorated.

The present invention has been made for the purpose of solving the above problems.

[Structure of Invention]

(Means for Solving the Problems) In order to solve the problems of the above-mentioned conventional techniques, the present invention sets a part of the outer surface to the frontmost sheet surface of the accumulated sheet group in a freely deformable state. An endless belt that is brought into contact with the paper sheet and is forced to be moved by the belt movement imparting means to feed out the paper sheets,
Attitude holding means for sandwiching a predetermined portion of the endless belt to hold the belt in a driving and paying-out posture, and only one sheet fed out by the endless belt is passed through, and the sheet feeding following the sheet is fed out. Is driven at a speed faster than the banding speed of the endless belt and the gate portion that regulates the sheet, and the paper sheet that passes through the gate portion is nipped and conveyed, and the endless belt is driven from the feeding position through the paper sheet. A conveying means for deforming the driven feeding posture, and by returning the endless belt from the driving feeding posture to the driven feeding posture and then returning to the driving feeding posture again, the sheets are intermittently fed one by one. In the feeding device, a drive motor, a drive rotor for transmitting the rotation of the drive motor to forcibly drive the endless belt, and a drive transmission system from the drive motor to the drive rotor are provided. The rotating body is allowed to rotate freely toward the speed increasing side, and when the endless belt is swung at the conveying speed of the conveying means due to the deflection of only the conveying means side from the gate part in the driven payout posture, the rotation corresponding to the conveying speed. It is characterized by comprising a banding giving means having a one-way clutch for rotating the driving rotating body at a speed.

(Operation) According to the above configuration, when a sheet having a large length in the feeding direction is fed, the maximum deflection that occurs between the gate portion and the band-moving imparting means during the driven feeding posture is maximum. If the state continues, the drive rotor that comes into contact with the endless belt via the one-way clutch is driven to rotate at the same speed as the endless belt.

(Examples) The present invention will be described below with reference to the examples shown in the drawings.

In the illustrated embodiment, the sheet stacking unit 1 for stacking and placing thick sheets P such as postal letters is shown in FIG. 1 as a front view and FIG. 2 as a right side view. Are stacked and supported in the up-down direction, and are sequentially fed from the topmost sheet.

The receiving table 2 for supporting the stack of the paper sheets P has a side plate 3 on one side thereof.
The shafts 5, 5 protruding from the side of the receiving table 2 are inserted into guide grooves 4, 4 formed in the vertical direction through collars 5a, 5a, respectively, so that vertical movement is guided. The ends of the shafts 5, 5 are joined to a belt 6 disposed along the outside,
By rotating the reversible motor M ₂ for driving the sheet in the forward direction, the receiving table 2 is raised as the sheet P is fed out.

The endless belt 7 is a wide belt made of rubber or other material having a large frictional force, and the outer surface thereof is formed on the outer surface 7A ₁ and an appropriate number (two lines in the embodiment) formed on the outer surface 7A ₁ in the longitudinal direction. The grooves 7A, 7A have surfaces 7A ₂ , 7A _2, and the outer surface of the grooves 7A, 7A is brought into contact with the paper sheet P.

The endless belt 7 includes a rotating body 8 rotatably provided on a shaft 8A at a position deviated from an end of the stacking unit 1 on the payout side, and a small diameter above the rotary member 8 above the payout side end of the stacking unit 1. It is loosely wound around a roll 9 which is rotatably provided on a position shaft 9A.

The endless belt 7 is located above the endless belt 7.
Obido imparting means 10 which controls a portion of the posture holding means providing a first force Obido in FIG velocity direction of the arrow to the outer surface upsilon ₁ is provided. The banding means 10 in the illustrated embodiment is provided with shafts 11 and 12 disposed at right and left positions above the rotating body 8 shown in FIG.
And pulleys 13 and 14 on the shafts 11 and 12, a one-way clutch 16 described below between the shaft 11 and the pulley 13, a belt 15 wound between these pulleys 13 and 14, and a reversible motor M ₁ described below. And the above pulleys 13,1 of this belt 15
The belt portion of the lower traveling section between 4 is pressed against the outer surface of the endless belt 7 like the rotating body 8, and the belt portion under the pulley 13 on the right side is the endless belt between the rotating body 8 and the roll 9. The belt 15 is in a tensioned state because it is pressed so that the upper traveling section of 7 is bent downward. Shaft 11 of pulley 13 on which one side of this belt 15 is hung
A reversible motor M ₁ is connected to. By driving the reversible motor M ₁ in the normal direction, the belt 15 and the endless belt 7 are respectively swung in the normal direction in the direction of the arrow in FIG. 1, and the reversible motor is generated based on the command from the reverse command unit R described later.
By rotating M ₁ in the reverse direction, the belt 15 and the endless belt 7 are swung in the reverse direction opposite to the direction of the arrow in FIG. Between the drive side shaft 11 and the pulley 13,
A one-way clutch 16 that freely rotates is interposed between the pulley 13 and the speed increasing side.
The function of will be described when explaining the function.

On the rear side of the roll 9, a roller 18 and a cleaning roller 19 as a posture holding means for sandwiching the endless belt 7 with the roll 9 and holding the posture of the endless belt 7.
Is constantly contacted with the outer surface of the endless belt 7 and is rotatably driven. A part of the roller 19 faces the dust receiving box 20 and is constantly in contact with the sponge roll 21 in the box 20. The dust on the outer surface of the dust collector is removed by adhering it to the cleaning roller 19 and delivering it to the sponge roll 21.
Dust is collected inside. As a result, the endless belt 7 hardly slips with the paper sheet to be fed,
It is possible to always reliably feed the paper sheets. The posture holding means in the above embodiment includes the rotating body 8, the pulleys 13, 1
4, a belt 15, a roll 9, a roller 18, and a cleaning roller 19.

A paper sheet detection lever 22 for detecting the rise of the paper sheets P is provided on the upper side of the stacking unit 1 on the feeding side so that the base of the paper sheet detection lever 22 can be vertically swung by a shaft 23 on the machine body (not shown) side. , Its base end 22A is designed to switch ON / OFF the sensor S such as a photo sensor and a proximity switch, and the detection lever 22 is pushed up by the paper sheet P, so that the sensor S is connected at its base end 22A. When switched on and actuated, the sensor S emits a detection signal for activating the reversible motor M ₁ of the band motion imparting means 10 in the normal direction and stopping the lifting motor M ₂ of the pedestal 2. .

The gate member 24 and the guide member 25 are both supported by supporting means 26 capable of retreating against the outer surface of the endless belt 7 against urging.

In the illustrated embodiment, the support means 26 includes a swing block 28 which is swingably supported by a machine body in a vertical direction by a shaft 27, a biasing spring 29 which biases the swing block 28 upward, and a bracket 30. And the axis 31.

As shown in FIG. 2, a bracket 30 is fixed to the swing block 28, and left and right side frames 30a,
30a is protruded upward, and a shaft 31 of two left and right gate rollers 24A, 24A as the gate member 24 is provided between the side frames 30a, 30a.
Is supported by the one-way clutch 32 so as to be freely rotatable in the reverse rotation direction and non-rotatable in the forward rotation direction, and the endless belt 7 is pushed up by the paper sheet P to be in the drive feeding posture as shown in the second illustration. When held (the third shown state), the positions of the gate rollers 24A, 24A coincide with the grooves 7A, 7A on the outer surface of the endless belt 7 and the edges of the grooves 7A, 7A and the rollers 24.
A predetermined gap is provided between the peripheral edges of A and 24A so that only one sheet P of the minimum thickness type among various sheets can pass. In this way, the gate rollers 24A, 24A and the outer surface of the endless belt 7 form a gate portion.
In this embodiment, the gate rollers 24A, 24A are fixed to the shaft 31, and the one-way clutch 32 is interposed between the shaft 31 and the bracket 30.
A one-way clutch 32 may be interposed between 24A and the shaft 31.

The lower end of the guide member 25 is fixed to the swing block 28, and the upper portion thereof is approximately approximately at the left and right portions of the gate rollers 24A, 24A as the gate member 24 with the roller peripheral surfaces of the rollers 24A, 24A. The curved surface is an arc surface larger than the roller peripheral surface that rises (a surface that prevents the paper sheets P from contacting the roller peripheral surface), and the end portion of the arc surface of the guide member 25 is above the rollers 24A, 24A. It is formed so as to be located slightly lower than the end face.

As a result, the leading end of the paper sheet P first comes into contact with the arc surface of the guide member 25 when the endless belt 7 feeds it, and then the roller.
The sheets P are brought into contact with the peripheral surfaces of 24A and 24A, and the sheets P are reliably separated from each other.

As the urging spring 29, a tension spring stretched between the lower end of the swing block 28 and the machine body side is used. The swing limit of the swing block 28 is determined by the stopper 33 at a position where a predetermined gap is formed with respect to the outer surface of the swing block 7.
The endless belt 7 is connected to the upper surface of the sheet P or the cradle 2.
The top and the non-contact state, that is, when the state of the first illustrated, the outer surface 7A _2, the surface of 7A ₂ gate roller of the endless belt 7
It is in contact with the outer peripheral surface of 24A, 24A.

The transport mechanism 17 is composed of upper and lower belts 34 and 35, and among the pulleys 36 and 37 around which the upper belt 34 is wound, the shaft 38 of the pulley 36 on the entrance side is provided in a fixed position, and rotates on this shaft 38. The pulley on the outlet side is attached to the other end of the arm 39 freely supported.
37 is pivotally supported, and a belt 34 is provided below the arm 39.
A guide plate 45A which is higher than the lower traveling side and extends near the rotating body 8 is fixedly provided. Lower belt 35
Of the pulleys 40 and 41 around which the outlet is wound
A shaft 43 is provided at a fixed position, and a pulley 40 on the inlet side is mounted on the other end of the arm 44 rotatably supported by the shaft 43. Further, a guide plate 45B is fixed to the fuselage side at a position slightly lower than the upper traveling side of the belt 35.

The arms 39 and 44 are pulled by springs 46 and 47, respectively, and the belts 34 and 35 of the movable pulleys 37 and 40 are pressed against the belts 35 and 34 of the fixed position pulleys 41 and 36, respectively. It has become.

The shafts 38 and 43 of the transport mechanism 17 are configured to be forcibly driven by the rotation transmitted from the motor M ₃ through a gear group (not shown), and the peripheral speed of the belts 34 and 35 is the endless speed. Velocity faster than peripheral speed υ ₁ due to forced belt movement of belt 7 υ ₂
Is set to

In the figure, S 'is a counting sensor for counting the number of sheets P passing through the transport mechanism 17, and is attached to each arm 39, 44 via a support member (not shown).

FIG. 14 shows a control block diagram, in which a power button,
It has a command section R including a start button, a stop button, a reverse rotation button, a control section C operated by signals from a sensor S and a counting sensor S '.
M ₁ , M ₂ and M ₃ are controlled.

Normally, by operating the power button and start button of the command unit R, the motor M ₂ is driven in the forward direction of the cradle through the control unit C, and the lever 22 is operated on the upper surface of the paper sheet P on the cradle 2. When the sensor S is switched on and actuated, the motor M ₂ is stopped and the motor M ₁ is rotated in the forward direction through the control unit C, and the endless belt 7 is rotated through the belt 15 in the feeding direction (the arrow direction in FIG. 1). Move at speed υ ₁ .

After that, the motor M ₁ continues forward rotation through the control unit C,
It is not stopped when the sensor S is turned off by feeding the paper sheet P. That is, the motor M ₁ is stopped when the stop button is operated or when the counting sensor S ′ does not detect the paper sheet for a predetermined time or longer.

And a reverse button is provided to displace the peripheral surface portion that performs the gate function of the gate rollers 24A, 24A,
When the motor M ₁ is reversely rotated for a predetermined time (for example, 1 second) through the control unit C by the reverse rotation command from the reverse rotation button and the paper sheet P does not come into contact with the endless belt 7, the endless belt 7 comes into contact with the gate rollers 24A, 24A. Gate roller 2
4A and 24A are reversed by a predetermined amount to displace the peripheral surface portion that acts as a gate. The motor M ₃ is started by the start button and stopped by the stop button.

Next, the feeding operation of the paper sheet in the above embodiment will be described as a third example.
This will be described with reference to FIGS.

3 to 12 shown as operation explanatory diagrams based on FIG.
The figure shows a case where the sheets P to be handled are thick like a postal letter.

FIG. 1 shows a state in which paper sheets P are stacked and stored on a receiving table 2 of a stacking unit 1 at a lowered position. Loading of the paper sheets P is performed from the front in FIG. In this way, they are integrated. Incidentally are filled arrows and speed upsilon ₁ showing the rotation direction in this Figure 1, this is for illustrative purpose only, Obido the belt 15 and the endless belt 7 in the forward direction in FIG. 1 It will not be done.

Next, when the power button and the start button of the command section R in FIG. 14 are operated, the motor M ₃ rotates through the control section C, the belts 34 and 35 start to rotate, and on the other hand, the motor M 3
₂ is activated, the pedestal 2 is raised from the position shown in FIG. 1 via the belt 6, the uppermost sheet P pushes up the detection lever 22, and the base end 22A of this detection lever 22 operates the sensor S. When the endless belt 7 is turned on and operated, the endless belt 7 is in the drive feeding posture, and the slack of the endless belt 7 is generated.
The portion 7B ₁ on the lower rear side is placed in pressure contact with the upper surface of the feeding end of the uppermost sheet P.

The sensor S inputs a detection signal to the control unit C by the switching operation of the sensor S to the above-described ON state by the base end 22A of the detection lever 22. As a result, the motor M ₁ of the belt movement imparting means 10 starts to rotate in the normal direction, and the endless belt 7 starts to rotate at the peripheral speed υ ₁ in the arrow direction via the belt 15 (third shown in the figure). Due to the frictional force of the
It is slid out at ₁ , and along with this, several sheets P below it are also taken out and stopped by hitting the guide member 25.

When the uppermost paper sheet P is further fed out, the lower surface of the leading edge thereof first reaches the guide member 25, and is sandwiched between the endless belt 7 on the upper side of the leading edge (note that the treated paper sheets are processed). If the thickness is intermediate, it is guided in a state close to the pinching) and hits the gate member 24, and then its tip is between the gate rollers 24A, 24A constituting the gate member 24 and the endless belt 7. Enter and push this gate member 24 downward. As a result, the swing block 28 that constitutes the support means 26 of the gate member 24 is moved around the shaft 27 against the urging spring 29 so that the fourth
In the figure, the gate member 24 and the guide member 25 are pivoted integrally as a result of being pivotally displaced in the counterclockwise direction, and the leading edge of the sheet is sandwiched between the guide member 25 and the endless belt 7. When the gate member 24 is pushed and moved, only one sheet P enters and is fed between the gate member 24 and the endless belt 7 without being bent at the leading edge of the sheet. The paper sheet P after the eye is placed while the leading end thereof is stopped by contacting the peripheral surface of the gate member 24 and the guide member 25 (fourth illustration). In particular, gate rollers 24A, 24A as gate members 24
Is not rotated in the paper sheet feeding direction and is in a non-rotatable state, so that the movement of the second and subsequent paper sheets P is reliably prevented.

In this state, the uppermost paper sheet P is fed out, and its leading end passes between the upper and lower guide plates (45A, 45B) of the transport mechanism 17 and enters between the entrance ends of the upper and lower belts 34, 35. The pulley 40 on the entrance side of the lower belt 35 is pushed by the thickness of the paper sheet P against the spring 47, and the tip of the paper sheet P is gripped by the force of the spring 47 (shown in FIG. 5).

The endless belt 7, from FIG. 3 just before reaching the Fig. 5 drive feeding position, i.e. feeding the sheets P in a forced Obido speed upsilon ₁ is held in sagging occurs posture only belt portion 7B ₁ However, when the state shown in FIG. That is, when the leading end of the paper sheet P is securely held between the belts 34, 35, the belts 34, 35
Wherein the peripheral speed upsilon ₂ of rotation of the direction of the arrow 35 the paper sheet P at a faster rate upsilon ₂ than feeding speed upsilon ₁ by the endless belt 7 is pulled, the slack of the companion no endless belt 7 is caused to lower portion 7B ₁ is pulled by the sheet P is moved at the moving speed upsilon ₂ of the paper sheet P, the portion 7B ₁ is the speed (upsilon ₂ -
υ ₁ ) The slack amount decreases by one, and the transport mechanism 1 of the rotating body 8
7B ₂ on the side facing 7 (gate member 24 and pulley
The endless belt 7 between the _{first and second} belts ₁₄ ) becomes slack due to the speed difference (υ2-υ1) (FIG. 6).

When the trailing end of the sheet P pulled by the transport mechanism 17 comes off the detection lever 22 (FIG. 7), the detection lever 22
Is rotated counterclockwise by its own weight, and the base end 22A of the detection lever 22 operates to switch off the sensor S while contacting with the upper surface of the next paper sheet P, and the detection signal from the sensor S causes the control unit to operate. It is input to C, the motor M ₂ is activated through the control unit C, and the cradle 2
Rises again, the upper surface of the paper sheet P next to the fed paper sheet P pushes up the detection lever 22, and when the base end 22A switches the sensor S on and operates, the motor M ₂ is stopped through the control unit C. The raising of the pedestal 2 is also stopped (shown in FIG. 8). As a result, the paper sheet P next to the delivered paper sheet P is at a height position for preparation, that is, a height position at which the return posture of the endless belt 7 formed thereafter should be a drive delivery posture suitable for delivery. , in other words, there is no slack in the belt portion 7B ₂ of the endless belt 7, bending occurs only in the belt portion 7B _1, the height should flexure of the belt portion 7B ₁ of the endless belt 7 is suitable modifications posture feeding Is located in position. In FIG. 8, the trailing end of the fed paper P is an endless belt 7.
While still in contact with the lower side portion 7B ₁ of the endless belt 7 is slack almost gone ho Isuzu becomes taut, 8
The lower side portion 7B of the endless belt 7 on the way from FIG.
The slack of ₁ is completely eliminated and becomes a tension state, and the slack generated in the belt portion 7B ₂ (the belt portion at the left side position of the rotating body 8) is maximized. The belt portion 7B of this endless belt 7
₂ (the belt portion at the left side of the rotator 8, that is, the belt portion between the gate member 24 and the pulley 14) has a slack only during the period from FIG. 8 to FIG. The rear end of the leaf P is the gate member 24 and the endless belt 7
It is up to the time of passing through the gate gap between and (intermediate time between FIGS. 9 and 10). Since at the time leading up to that period sag length of the belt portion 7B ₂ of the endless belt 7 is in the increasing state, the belt portion of the endless belt 7 in contact with the belt 15 moves at a speed upsilon ₁ and the same speed of the belt 15 ing. However belt portion of said period of time (endless period slack occurs only in the belt portion 7B ₂ of the belt 7) endless belt 7 is in
7B ₂ moves at a speed upsilon ₂ through the sheets P, the belt portion 7B ₁ and roller 18, 19 in the endless belt 7, a pulley 13 belt portion of the position they belt portion since a tension even speed upsilon ₂ in the movement, joined by tension speed difference in belt portion of the endless belt 7 in contact with the belt 15 (υ ₂ -υ _1), a belt 1 which has been driven by the resulting speed upsilon ₁
5 is a moving speed は₂ via a one-way clutch 16 that freely rotates to a speed increasing side between the pulley 13 and the drive side shaft 11.
And move at that speed υ ₂ .

As a result, during that period all portions of the endless belt 7 is moved at a speed upsilon _2, the endless belt 7 would be maintained in the posture state of the ninth shown.

In addition, when the pulley 13 is fixed to the shaft 11 without interposing the one-way clutch 16 between the drive-side shaft 11 and the pulley 13, the period (the belt portion 7B of the endless belt 7 is
The length of the paper sheet P is large because the tensile force of the speed difference (υ ₂ −υ ₁ ) is applied to the belt portion of the endless belt 7 which is in contact with the belt 15 for the entire period (the period in which only ₂ is slack). In the case of processing, the period of time becomes long, the expansion and contraction of the endless belt 7 and the belt 15 is repeated, abrasion between both belts occurs, and the life of both belts is shortened. The one-way clutch 16 is provided in order to eliminate such a point.

The outer peripheral surface of the rotary member 8, moves are the slippery smooth, for example, a belt portion facing the gate member 24 of the endless belt 7 as the seventh illustrated at a rate upsilon ₂ between the endless belt 7 It is, and even when the belt portion in contact with the belt 15 of the endless belt 7 is moved at a speed upsilon _1, slip by each belt portion of the endless belt 7 between the endless belt 7 and the rotor 8 speed upsilon _It keeps ₁ and っ て₂ and moves smoothly.

The endless belt 7 is from the time when the front end of the paper sheet P is gripped between the belts 34 and 35 (shown in FIG. 5) to the time when the rear end leaves the gate member 24 (intermediate between FIGS. 9 and 10). Is
The driven delivery posture is such that the paper sheet P is moved by the movement of the paper sheet P. Driven feeding posture of the endless belt 7, the belt-shaped deformation attitude slack of the belt portion 7B ₁ is shifted to the belt portion 7B _2, sagging migration completion slack has shifted completed from the belt portion 7B ₁ to the belt portion 7B ₂ position ( It has become since occurs posture) and the slack only to belt portion 7B _2. In the case of paper sheets having a short length in the feeding direction among the types of paper sheets to be processed, the driven feeding posture is only the belt shape deformation posture, and the slack transfer completion posture is not taken. Because, in that case, the slack caused by the paper sheets held between the belts 34 and 35 causes the belt portion 7B ₁ to the belt portion 7 to be loosened.
This is because the trailing edge of the paper sheet passes through the gate member 24 during the transition to B ₂ . After the trailing edge of the paper sheet is separated from the gate portion 24 in this way, the endless belt 7 returns from the driven feeding posture to the driving feeding posture (from the intermediate timing of FIGS. 9 and 10). Figure 11 until just before).

When the rear end of the above-mentioned paper sheet P separates from the gate member 24,
The swing block 28 supporting the gate member 24 and the guide member 25 is rotated clockwise about the shaft 27 by the force of the urging spring 29, and the gate roller 24 forming the gate member 24.
A and 24A are returned to a position where an initial predetermined gap is maintained between the inner surface of the endless belt 7 and the outer surface of the endless belt 7 assuming that the inner surface is in contact with the rotating body 8, and the guide member 25 is also returned. At the position, the leading edge of the stacked sheets P is hit and regulated. When the rollers 24A, 24A and the guide member 25 return to their original positions, the lower surface of the endless belt 7 is elastically deformed to cause the rollers to move.
Contact 24A, 24A. In addition, the rear end of the paper sheet P is the gate member 2
4, the moving speed υ ₂ of the paper sheet P becomes the endless belt 7.
And the belt 15 is driven by the shaft 11 at a speed υ ₁
In forced Obido, the endless belt 7 by Obido of the belt 15 is also Obido at a rate upsilon _1. Since the belt portion 7B ₁ of the endless belt 7 is restricted by contact with the gate rollers 24A, to 24A, Obido at a speed upsilon ₁ of the endless belt 7 to assume the return position to the endless belt 7, belt portion 7B while decreasing the _second sagging cause slack in the belt portion 7B _1, the belt portion 7B ₁ is in contact with the upper surface of the paper sheet P of the uppermost again with increasing sag (10 shown).

When the endless belt 7 is further forced Obido at a rate upsilon ₁ by the belt 15, slack of the belt portion 7B ₂ is completely eliminated, it is driven feeding position with respect to the paper sheet P of the endless belt 7 Hatsugi, the following The feeding of the paper sheet P is started (see FIG. 11). The belt portion 7B of this endless belt 7
₁ pushes out the paper sheet P, and the leading end of the paper sheet P pushes down the gate rollers 24A, 24A as in the previous feeding operation (FIG. 12).

The feeding operation of the paper sheet P by the endless belt 7 is
The state is shifted from the state shown in FIG. 12 to the state shown in FIG. 4, and thereafter, the feeding operation of the sheet P is repeated in the same manner.

During the feeding of the paper sheets P, paper dust or the like adhering to the outer surface of the endless belt 7 is transferred to the peripheral surface of the cleaning roller 19 which constantly contacts the endless belt 7, and the transferred dust is wiped by the sponge roller 21. It is collected and collected in the dust container 20. Thereby, frictional contact between the endless belt 7 and the paper sheet P is ensured. Paper P that has entered between the belts 34 and 35
In the transition from FIG. 5 to FIG. 6, the leading end blocks the sensors S ′ and S ′, and the trailing end of the sheet P passes through the sensors S ′ and S ′ (the state in FIG. 12). Then, the sensors S ′ and S ′ input a sheet passing signal to the control unit C. The sheet passing signals from the sensors S 'and S' are used as count signals in the control section C.

When the last sheet P is fed out as described above, there is no sheet P on the receiving table 2 and a predetermined time after the last sheet P passes between the sensors S ′ and S ′. Even after the passage of time, the sensors S 'and S' do not detect the sheet P, and the sensors S 'and S'
The control unit C controls the motor M ₁ and the motor M ₃ through the signal from
To stop. Stopping the motor M ₁ stops the belt 15 and the endless belt 7, and stopping the motor M ₃ stops the belt.
Stop 34,35. When the belts 34 and 35 are stopped, the last paper sheet P has finished passing between the belts 34 and 35.

The controller C applies a stop signal to the motors M ₁ and M ₃ and simultaneously applies a reverse rotation drive signal to the motor M ₂ for a predetermined time. As a result, the motor M ₂ is reversely rotated for a predetermined time and the pedestal 2 is lowered, and when the pedestal 2 is lowered to the first illustrated position, the motor M ₂ and the pedestal 2 are stopped. The stop operation of the motors M ₁ and M ₃ and the reverse rotation stop operation of the motor M ₂ described above can be performed in exactly the same manner by operating the stop button of the command unit R, and is performed through the control unit C by operating the stop button. The paper sheet processing operation is completed as described above. When the operation is completed or the next processing operation is started, the reverse rotation button of the command unit R is operated. A reverse rotation command is input from the command unit R to the control unit C by this reverse rotation button operation,
The control unit C reverses the motor M ₁ for a predetermined time. If the paper sheet P does not exist on the cradle 2, or if the endless belt 7 does not contact the paper sheet P even if the paper sheet P exists on the cradle 2, Portions facing the gate rollers 24A, 24A are elastically deformed and are in contact with the gate rollers 24A, 24A. Therefore, the reversal of the motor M _{1 for} a predetermined time causes the belt 15 of the band-moving imparting means 10 to band in the opposite direction, and the endless belt 7 is also banded in the opposite direction (the direction opposite to the arrow in FIG. 1),
As a result, the gate rollers 24A, 24A are rotated by the interposition of the one-way clutch 32 in the direction opposite to the sheet feeding direction (clockwise in FIG. 1).

Therefore, the gate action surface portion of the gate rollers 24A, 24A moves, and the new portion directly controls the endless belt 7 to perform the gate action.

By this action, the belt rollers 24A, 24A are not manually rotated, and
And the gate rollers 24A, 24 through the endless belt 7.
A can be rotationally displaced, and the peripheral surfaces of the gate rollers 24A, 24A are used evenly, and uneven wear in which a part is locally worn can be prevented.

The command for reverse rotation of the motor M ₁ may be given by the operation of the reverse rotation button as described above or by the counting sensor S ′ and the detection unit in the control unit C. In this case, since the counting sensor S ′ does not detect the paper sheet for a predetermined time while the motor M _{1 is in} the normal rotation state, the detection section determines that there is no paper sheet P on the pedestal 2, and this detection section The motor M ₁ is rotated in the reverse direction via the control unit C according to the output signal of.

Further, in this embodiment, when the rear end of the paper sheet P leaves the gate rollers 24A, 24A, the lower surface of the endless belt 7 comes into contact with the rollers 24A, 24A by elastic deformation, and the endless belt 7 returns through this contact. The slack is formed in the belt portion 7B ₁ in the posture, but the present invention is not limited to this example, and when the rear end of the paper sheet P leaves the gate rollers 24A, 24A, the endless end is formed. The lower surface of the belt 7 may first be brought into a positional relationship where it contacts the upper surface of the next paper sheet, and the slack may be formed in the belt portion 7B ₁ through the contact. The reverse rotation of the gate rollers 24A, 24A is performed by utilizing the reverse direction belt movement of the endless belt 7. When the endless belt 7 is in the non-contact state with the sheet, the outer surface of the endless belt 7 contacts the gate member. Is required. However, this contact state means the state at the end of the sheet processing operation or at the time before the start of the sheet processing operation. During the sheet feeding operation, the contact state (the contact between the gate rollers 24A, 24A and the endless belt 7) is not always required. ) Is not a necessary condition.

FIG. 13 shows a situation in which thin sheets such as postcards and slips are collected and fed out instead of a thick one like a postal letter. In this case, in particular, the outer peripheral surface of the endless belt 7 is This is an example of a feeding operation of paper sheets that can pass through a gate gap formed by the gate rollers 24A, 24A. In this case, the feeding operation can be performed while the gate rollers 24A, 24A and the guide member 25 are in the fixed position, and the feeding operation of the endless belt 7 is substantially the same as that described above, and the feeding of one sheet at a time is performed. Can be. The outer surface of the endless belt 7 in this embodiment has grooves 7A and 7A, and the gate rollers 24A and 24A face the surfaces 7A ₂ and 7A ₂ of the grooves 7A and 7A, but are not limited to this example. However, the endless belt 7 having only the outer surface 7A ₁ may be used. The gate roller 24A, may be 24A also is opposed to the outer surface 7A _1. And gate roller 24
Although A and 24A are examples in which two are provided in the present embodiment, the number may be one, and in this case, it is preferable that the rollers are long in the roller axis direction. When the endless belt 7 is in pressure contact with the rotating body 8, the lower surface of the endless belt 7 and the gate roller 24A,
Although a predetermined gap is provided between the endless belt 7 and the gate roller 24A, the gate roller 24A prevents the gate roller 24A from applying a strong frictional resistance to the endless belt 7 when the endless belt 7 moves in the forward direction. In some cases, it is not necessary to provide a gap between the gate rollers 24A, 24A and the endless belt 7.

Further, the endless belt 7 is a single belt, but a plurality of endless belts may be arranged side by side in the width direction. Further, in the present embodiment, the stacked paper sheets are vertically stacked, the endless belt 7 faces the upper fixed height position, and the stacked paper sheets placed on the receiving table 2 with respect to the endless belt 7 is removed. This is an example in which the belt is raised and pressed, and the paper is fed from the upper side. However, the present invention is not limited to this example. It is also possible to sequentially feed out the lower sheets. This stack of stacked paper sheets may not be stacked in the vertical direction, but may be arranged in a stacked state in the horizontal direction, and the endless belt 7 may be positioned at the foremost position, and the stacked paper sheets may be sequentially fed out from the foremost paper sheet. In this case, the stacked paper sheet group is pressed from the endmost paper sheet side to the endless belt 7 side by a pressing plate or the like, but instead of the horizontal movement of the receiving tray 2 of this embodiment, this receiving tray is moved. 2 may be a pressing plate. Needless to say, the movement of the pressing plate may be moved by a tension spring biasing the endless belt 7 instead of the movement by the motor.

As the band movement applying means 10, pulleys 13, 14 and a belt 15 are used, but it is a matter of course that a roller (for example, a roller 18) may be used. In the present embodiment, the one-way clutch 16 is interposed between the shaft 11 and the pulley 13, but in the drive transmission system from the motor M ₁ to the pulley 13 (the drive transmission gear, the drive transmission pulley, etc. and the shaft). Etc.) may be provided with a one-way clutch 16.

In this embodiment, the conveying means is the pulleys 36, 37, 40, 41 and the belts 34, 35, but may be a roller group or a combination of both. Furthermore, a reversible motor is used as the motor M ₁ that constitutes the banding imparting means of the present embodiment, but a motor that rotates only in the forward rotation direction is used, and the motor M _{1 is connected} to the shaft 11 in the drive transmission system. A forward / reverse transmission switching clutch is provided,
The normal rotation from the motor M ₁ may be converted to the reverse rotation by the clutch and transmitted to the shaft 11 when a command is given from the reverse rotation band motion command unit. When the sheet is fed, the normal rotation of the motor M ₁ is transmitted to the normal rotation shaft 11 by the clutch.

Further, in the present embodiment, the paper sheet feeding apparatus is capable of processing paper sheets having a great difference in thickness and length in the feeding direction. However, depending on the purpose of use, there is a difference in the thickness, but the length of the sheet in the feeding direction is constant, and the length of the sheet in the feeding direction is large or small. Both of these can, of course, be used for certain sheet processing.

In particular, the configuration using the one-way clutch according to the present invention is effective not only in the case of a paper sheet processing apparatus having a difference in size but also in the case of a paper sheet processing apparatus of a fixed length having a large length. Even if there is an effect. That is, according to the prior art, in order to prevent abrasion due to the speed difference between the endless belt and the band-moving imparting means, the gate portion and the conveying portion inlet have a sufficiently long dimension corresponding to the length of the paper sheet. However, according to the present invention, there is no such restriction.

In the present embodiment, the pedestal 2 is raised when the lever 22 deviates from the rear end of the feeding paper sheet (FIGS. 7 to 8). At this time, the endless belt 7 is in a posture in contact with the fed paper sheets and is in the middle of feeding, particularly in a driven feeding posture, does not come into contact with the paper sheet to be fed next after being lifted by the receiving table 2 and has a return posture. Hour (10th
(FIG. 10), the endless belt 7 takes a driving and feeding posture optimal for feeding from the time (FIG. 10) to the time of FIG. In this example, the receiving tray 2 is raised every time one sheet of paper is fed out. This is the case of thick letters, and in the case of thin letters as shown in FIG. Switching of the sensor S by the lever 22 is performed,
Each time, the cradle 2 is raised.

In this example, the receiving table 2 is moved when the endless belt 7 is driven and extended.
Although it is rising, the endless belt 7 may be in the returning posture (for example, returning from the driven feeding posture to the driving feeding posture) by changing the installation position of the lever 22 and the feeding speed is required to be too fast. If this is not the case, the pedestal 2 may be raised when the endless belt 7 returns to the drive-feeding posture, and the drive-feeding posture of the endless belt 7 may be deformed into a feed-out posture suitable for feeding.

In this embodiment, the detecting means for detecting the position of the foremost sheet in the sheet group is constituted by the lever 22 and the sensor S in this example, but may be constituted by a light emitting / receiving sensor. More specifically, the position of one to several sheets following the leading sheet for thick letters, and the position of about thirty sheets following the leading sheet from the leading sheet for thin letters. A light emitting and receiving sensor may be provided, and the receiving stand 2 may be moved by the light receiving sensor receiving light that has been blocked by the sheets due to the reduction of the sheets.

Further, a sensor is provided for detecting a specific portion of the endless belt 7 at a predetermined time (for example, at the time of the drive extension posture), and detects a change in the posture of the endless belt 7 and a change accompanying a decrease in the number of paper sheets. May be moved. Further, in FIG. 3 of this example, a regulating plate is provided which comes into contact with the upper surface of the uppermost sheet and regulates the rise of the sheet group, and detects a pressing force of the receiving table 2 against the sheet regulating plate. A detector may be provided, and when the pressure detector detects a predetermined pressure when the pedestal 2 is raised, the pedestal 2 may be stopped from rising. Therefore, the configuration is not limited to the configuration including the lever 22 and the sensor S.

〔The invention's effect〕

As described above, according to the present invention, there is no friction due to the speed difference between the endless belt and the band movement imparting means even when a sheet having a large length in the feeding direction is fed out. An effect that the durability of the applying means and the like can be improved is exhibited.

[Brief description of drawings]

1 is a front view showing an embodiment of the present invention before being fed, FIG. 2 is a right side view of the same, FIGS. 3 to 12 are explanatory views of the feeding process, and FIG. FIG. 14 is a control block diagram showing an example of the case of feeding out paper sheets. DESCRIPTION OF SYMBOLS 1 ... Paper sheet stacking part, 7 ... endless belt, 8 ... Rotating body which comprises a posture holding means, 9 ... Roll which comprises a posture holding means, 10 ... Band movement giving means, 11, 12 ... Band movement giving means Constituent shafts, 13, 14 ... Pulleys constituting posture maintaining means / belt movement imparting means, 15 ... Belts constituting posture retaining means / belt movement imparting means, 16 ... One-way clutches constituting belt movement imparting means, 17 ... A transport mechanism as a transport unit, 18 ... a cleaning roller that constitutes the posture maintaining unit, 19 ... a cleaning roller that constitutes the posture maintaining unit, 24 ... a gate member that constitutes a gate portion with the outer surface of the endless belt (7), 24A, 24A. ... gate roller, 31 ... shaft, 32 ... one-way clutch, a motor constituting the M ₁ ... Obido imparting means, P ... paper sheet, the command unit of the R ... reverse direction Obido command unit.

Continuation of the front page (56) References JP-A-59-78016 (JP, A) JP-A-58-109333 (JP, A) Actually opened 61-128236 (JP, U)

Claims (1)

(57) [Claims] An outer surface thereof is brought into a freely deformable state, and its outer surface is brought into contact with the frontmost sheet surface of a group of stacked sheets, and is forcedly swirled by a banding applying means to recycle the sheets. An endless belt to be taken out, and a posture holding means for holding a predetermined portion of the endless belt and holding the belt in a drive feeding posture,
A gate unit that allows only one sheet fed out by the endless belt to pass through and regulates the feeding of the sheet following the endless belt; and a gate unit that is driven at a speed higher than the banding speed of the endless belt. Nip and convey paper sheets that pass through
A transporting means for deforming the endless belt from the driven feeding posture to the driven feeding posture through the paper sheets,
In a feeding device that intermittently feeds paper sheets one by one by deforming the endless belt from the driving feeding posture to the driven feeding posture and then returning to the driving feeding posture again, the driving motor and the rotation of the driving motor are transmitted. A drive rotating body for forcibly urging the endless belt and a drive transmission system from the drive motor to the drive rotating body, which allows the drive rotating body to freely rotate toward the speed increasing side, and conveys means from the gate section when the driven feeding posture. When the endless belt is swung at the conveying speed of the conveying means due to the bending only on the side, the endless belt is provided with a one-way clutch having a one-way clutch that rotates the drive rotor at a rotation speed corresponding to the conveying speed. Paper sheet feeding device.