JPH0328025Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Field of industrial use) The invention is applicable to postcards, envelopes (including empty envelopes and so-called postal letters containing documents), various cards, slips, banknotes (banknotes), etc. This method is used for payment machines, etc., and collects paper sheets such as banknote packs containing a predetermined number of banknotes, banknote envelopes, etc.), bills, checks, etc., and selects one sheet from the group of accumulated paper sheets. The present invention relates to a paper sheet feeding device for feeding paper sheets one by one. In this specification, one sheet of paper includes one envelope, one bag of banknotes, etc., and these are collectively referred to as such.

(Prior art) As a paper sheet feeding device for feeding paper sheets one by one and performing required processing as described above, a part of the paper sheet feeding device is in a freely deformable state and its outer surface is shaped like a group of accumulated paper sheets. An endless belt that feeds out paper sheets by being brought into contact with the frontmost sheet surface and forcibly moved by a banding motion imparting means, and a predetermined portion of this endless belt is held between the belts and the belt is brought into a driving and feeding position. a gate section that is constituted by a posture holding means for holding, an outer surface of the endless belt, and a gate member, and that allows only one paper sheet fed out by the endless belt to pass through and restricts the feeding of subsequent paper sheets; The endless belt is driven at a speed higher than the belting speed of the endless belt, and conveys paper sheets passing through the gate portion by pinching them, and transforms the endless belt from a driving feeding position to a driven feeding posture through the paper sheets. There is a feeding device which intermittently feeds paper sheets one by one by having an endless belt transformed from a driving feeding posture to a driven feeding posture and then returning to the driving feeding posture.

Since the above-mentioned feeding device was used for feeding paper sheets of a certain thickness, the inner surface of the endless belt was supported by a rotating body fixedly provided inside the endless belt, and the parts supported by this rotating body A gate member is provided in a fixed position at a predetermined distance from the outer surface of the endless belt, and the distance is the distance between the gates, and the distance between the gates is larger than the thickness of the paper sheets to be processed. It is considered to be a fixed period.

On the other hand, recently paper sheets with different sizes, such as postcards and postal letters, have a thickness of 0.1 mm to 8 mm.
There is a need to handle the processing of paper sheets that have such large differences.

Even if an attempt was made to apply the conventional feeding device to such demands, it could not be used because the distance between the gates was fixed, and therefore the paper could not be used until it reached a position corresponding to the thickness of the sheet being fed. In addition to making the gate member retreat with the leaves themselves,
It has been considered to open the entrance of the conveyance means according to the thickness of the paper sheet.

(Problem to be solved by the invention) However, when the thickness of the paper sheets fed out by the endless belt is large, when the leading edge of the fed paper sheets enters the inlet of the conveying means, the inlet portion It does not open smoothly to accept the thickness of the paper sheet,
As a result, the feeding of the paper sheets stops and the leading edge of the paper sheets slips at the entrance of the conveying means, causing damage to the paper sheets or causing them to bend, and furthermore, the paper sheets and the endless belt may be damaged. There is a problem in that slips between the paper sheets and the conveyance means cause wear on each sheet.

In view of this, the present invention was devised with the aim of solving the above-mentioned problems, and even if the paper sheets to be fed out are thick, they can smoothly enter the conveyance means and be delivered. An object of the present invention is to provide a paper sheet feeding device.

[Structure of the idea]

(Means for Solving the Problems) In order to solve the above problems, the paper sheet feeding device according to the present invention has a part that is freely deformable so that the outer surface of the device is in a state where the outer surface of the paper sheet feeder is at the forefront of the stacked paper sheet group. An endless belt that feeds out paper sheets by contacting a similar surface and being forcibly moved by a banding motion imparting means, and a posture holding device that holds a predetermined portion of the endless belt in a driving and feeding posture. a gate portion configured by an outer surface of the endless belt and a gate member, which allows only one sheet of paper fed out by the endless belt to pass through and restricts the feeding of subsequent sheets; and the endless belt. a conveying means that is driven at a speed faster than the belting speed of the belt, grips and conveys paper sheets passing through the gate portion, and transforms the endless belt from a driving feeding position to a driven feeding posture through the paper sheets; In a feeding device that intermittently feeds paper sheets one by one by transforming the endless belt from a driving feeding posture to a driven feeding posture and then returning to the driving feeding posture again, the endless belt has an inner surface side of the endless belt. a rotating body located on the rotary body; a gate member disposed opposite to the rotating body to allow a sheet of paper to pass through the outer surface of the endless belt in contact with the rotating body; a first support means that is supported so as to be retractable against a biasing force; a pair of conveying rotating bodies forming an entrance portion of the conveying means; and one conveying rotating body being separated from the other rotating body. and an interlocking mechanism that moves the second support means in a direction in which the conveying rotors move away from each other in conjunction with the retracting movement of the first support means. It is characterized by this.

(Function) With the above configuration, when a thick paper sheet among the paper sheets to be processed is fed out, when it enters between the gates, the gate member is retracted and passed through the gate part. In conjunction with the retracting movement of the gate member, one of the rotating bodies at the entrance of the conveying means retracts and opens the entrance, so that even thick paper sheets can smoothly enter the conveying means. It will be delivered to this.

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

In the illustrated embodiment, a paper sheet stacking section 1 for stacking and stacking thick paper sheets P such as postal letters, etc., has a front side shown in FIG. 1 and a right side shown in FIG. This shows a case in which paper sheets are piled up and supported in the vertical direction and are fed out sequentially starting from the topmost sheet.

The pedestal 2 that supports stacking paper sheets P has shafts 5, 5 protruding from the sides of the pedestal 2 in guide grooves 4, 4 vertically bored in a side plate 3 on one side thereof. The ends of the shafts 5, 5 are connected to a belt 6, which is fitted and guided in vertical movement through the shafts 5a, 5a, and is disposed along the outside of the side plate 3, and is reversible to drive the belt 6. As the motor _M2 rotates in the forward direction, the pedestal 2 is raised as the paper sheets P are fed out.

The endless belt 7 is a wide belt made of rubber or other material with high frictional force, and its outer surface is
A ₁ and the surface 7 of grooves 7A, 7A formed in an appropriate number (two in the embodiment) in the longitudinal direction on the outer surface 7A ₁ .
A ₂ and 7A ₂ , the outer surface of which is brought into contact with paper sheets P.

The endless belt 7 includes a rotating body 8 which is rotatably provided on the shaft 8A at a position away from the end of the collecting section 1 on the feeding side, and a rotary body 8 which is rotatably provided on the shaft 8A at a position away from the end of the collecting section 1 on the feeding side, and a rotary body 8 which is rotatably provided on the shaft 8A at a position away from the end on the feeding side of the collecting section 1;
It is loosely wound around a roll 9 that is rotatably provided on a shaft 9A located above the feed-out side end.

At an upper position of the endless belt 7, there is provided belt motion imparting means 10 which applies forced belt motion to the endless belt 7 at an outer surface speed υ ₁ in the direction of the arrow in FIG. . The banding motion imparting means 10 in the illustrated embodiment includes shafts 11 and 12 disposed at left and right positions above the rotating body 8 shown in FIG. 1, pulleys 13 and 14 on these shafts 11 and 12, and 1
1 and pulley 13, a belt 15 wound between these pulleys 13 and 14, and a reversible motor _M1 , which will be described later.
The belt portion of the lower running section between 14 and 14 is pressed against the outer surface of the endless belt 7 so as to be connected to the rotating body 8.
The belt portion at the bottom of the pulley 13 on the right side is pressed so as to bend the upper running section of the endless belt 7 between the rotating body 8 and the roll 9 downward, and eventually the belt 15 becomes under tension. There is. The shaft 1 of the pulley 13 on which one side of this belt 15 is hung
1 is connected to a reversible motor _M1 . By driving the reversible motor M ₁ in forward rotation, the belt 15 and the endless belt 7 are respectively rotated in the direction of the arrow in _FIG. By driving the belt 15 and the endless belt 7 in a reverse direction, the belt 15 and the endless belt 7 are reversely moved in the direction opposite to the direction of the arrow in FIG. The above drive side shaft 11 and pulley 1
A one-way clutch 16 is interposed between the pulley 13 and the pulley 13 to allow the pulley 13 to rotate freely toward the speed-increasing side.

On the rear side of the roll 9, a roller 18 and a cleaning roller 19 are always in contact with the outer surface of the endless belt 7. A part of this roller 19 faces the inside of the dust receiving box 20, and the roller 19 is provided so as to be driven and rotatable.
The cleaning roller 19 removes paper dust and the like adhering to the outer surface of the endless belt 7, which is constantly in contact with the inner sponge roll 21.
1, and the dust is collected in a dust receiving box 20. As a result, slips are less likely to occur between the endless belt 7 and the paper sheets to be fed out, and paper sheets can always be fed out reliably. Note that the posture maintaining means in the above embodiment includes the rotating body 8 and the pulley 1.
3, 14, belt 15, roll 9, roller 18,
It is composed of a cleaning roller 19.

A paper sheet detection lever 22 for detecting the rise of the paper sheets P is provided in the upper part of the stacking section 1 on the feeding side with its base facing toward the machine body (not shown) so as to be swingable in the vertical direction by a shaft 23. , its base end 22A is adapted to switch on/off a sensor S such as a photo sensor or a proximity switch, and is connected to a detection lever 2.
2 is pushed up by the paper sheet P and its base end 22A
When the sensor S is turned on and activated, the sensor S starts the reversible motor M ₁ of the belt motion applying means 10 in forward rotation, and also starts the motor M ₂ for lifting the pedestal 2.
It is designed to emit a detection signal to stop the system.

The gate member 24 and the guide member 25 have a first structure that can be retracted against the outer surface of the endless belt 7 against bias.
It is supported by support means 26 of.

In the illustrated embodiment, the first support means 26 includes a swing block 28 supported on the body by a shaft 27 so as to be swingable in the vertical direction, and a biasing spring 29 that urges the swing block 28 upward. , bracket 30
and a shaft 31.

A bracket 30 is fixed to the swing block 28 as shown in FIG.
The left and right side frames 30a, 30a of 0 are provided to protrude upward, and two left and right gate rollers 24A, 2 as the gate member 24 are installed between the side frames 30a, 30a.
4A shaft 31 is supported via a one-way clutch 32 so that it can freely rotate in the reverse direction and cannot rotate in the forward direction, and as shown in the second figure, the endless belt 7
When the gate rollers 24A, 24A are pushed up by the paper sheet P and held in the drive feeding position (state shown in the third figure), the positions of the gate rollers 24A, 24A are aligned with the grooves 7A, 7A on the outer surface of the endless belt 7. This groove 7
There is a predetermined gap between the edges of the rollers A, 7A and the peripheral edges of the rollers 24A, 24A, through which only one paper sheet P of the smallest thickness among the various paper sheets can pass. There is. In this way, the gate roller 24
A, 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 a one-way clutch 32 is interposed between the shaft 31 and the bracket 30. A one-way clutch 32 may be interposed between the two.

In this embodiment, a case is shown in which a guide member 25 is provided for aligning the leading ends of the paper sheets P and guiding them to the gate section.

The lower end of the guide member 25 is fixed to the swing block 28, and the upper part is fixed to the gate member 24.
On the left and right sides of the gate rollers 24A, 24A, there is an arcuate surface larger than the roller circumferential surface that curves approximately approximately with the roller circumferential surface of the rollers 24A, 24A (the paper sheet P comes into contact with the roller circumferential surface). The end portion of the arcuate surface of this guide member 25 is formed to be located slightly below the upper end surfaces of the rollers 24A, 24A. As a result, when the paper sheet P is fed out by the endless belt 7, the leading edge of the paper sheet P first contacts the arcuate surface of the guide member 25 and then contacts the circumferential surfaces of the rollers 24A, 24A, thereby ensuring separation of the paper sheets P from each other. It's becoming like that.

The biasing spring 29 is a tension spring tensioned between the lower end of the swing block 28 and the machine body side, and the biasing force of this spring causes the gate member 24 to move toward the endless belt located directly below the rotating body 8. The swinging limit of the swinging block 28 is determined by a stopper 33 at a position that forms a predetermined distance from the outer surface of the swinging block 28. Note that when the endless belt 7 is not in contact with the upper surface of the paper sheet P or the upper surface of the pedestal 2, that is, in the state shown in the first figure, the surfaces of the outer surfaces 7A ₂ and 7A ₂ of the endless belt 7 are the gate rollers 24A, It is in contact with the outer peripheral surface of 24A.

Next, the conveyance mechanism 17 moves the upper and lower belts 34, 3
Among the pulleys 36 and 37 around which the upper belt 34 is wound, the shaft 38 of the pulley 36 on the inlet side is provided in a fixed position, and the other end of the arm 39 is rotatably supported by the shaft 38. A pulley 37 on the outlet side is pivotally supported on the arm 39, and a guide plate 45A is provided at the bottom of the arm 39, which is located above the lower running side of the belt 34 and extends near the rotating body 8.
is permanently installed. Among the pulleys 40 and 41 around which the lower belt 35 is wound, the pulley 4 on the exit side
A first shaft 43 is provided in a fixed position, and an inlet-side pulley 40 is pivoted in the middle of an arm 46 that is rotatably supported by this shaft 43 and constitutes a second support means 44. Also, on the aircraft side, the above belt 35
The guide plate 4 is located slightly lower than the upper running side of the
5B is fixedly installed.

The other end of the arm 46 is connected to the first support means 2
The extension part 46A of the arm 46 extends to the lower part of the swing block 28 of the swing block 28, and the extension part 46A of the arm 46 has a spring attached to the lower surface of a pin 47 provided at a position offset to the opposite side of the shaft 31 with the shaft 27 of the swing block 28 as the center. The extension portion 46A and the pin 47 constitute an interlocking mechanism 50.

The arm 39 is pulled by a spring 49, and the belts 34 and 35 on the movable pulleys 37 and 40 are connected to the belt 3 on the fixed pulleys 41 and 36.
The portions 5 and 34 are pressed against each other.

The shafts 38, 43 of the conveying mechanism 17 are forcibly driven by rotation being transmitted from the motor _M3 through a gear group (not shown), and the circumferential speed of the belts 34, 35 is set to the endless speed. The circumferential speed υ ₂ due to the forced movement of the belt 7 is set to be faster than the circumferential speed υ ₁ .

In the figure, S' is a counting sensor that counts the number of paper sheets P passing through the transport mechanism 17, and each arm 39,
46 via a support member (not shown).

Fig. 14 shows a control block diagram, including a command section R including a power button, a start button, a stop button, and a reverse button, a sensor S, and a counting sensor.
It has a control section C operated by a signal from S',
Motors M ₁ , M ₂ , and M ₃ are controlled by this control unit C.

Normally, when the power button and start button of the command unit R are operated, the motor M ₂ is driven in the forward rotation direction of the pedestal through the control unit C, and the lever 22 is operated on the upper surface of the paper sheet P on the pedestal 2. When the sensor S is turned on and activated, the motor M ₂ is stopped through the control unit C, and the motor M ₁ is rotated in the forward direction, causing the endless belt 7 to rotate in the unwinding direction (in the direction of the arrow in FIG. 1) via the belt 15. Move at a speed of υ ₁ .

Thereafter, the motor _M1 continues to rotate normally through the control unit C, and is not stopped by switching off the sensor S due to the feeding of the paper sheet P. That is, the motor _M1 is stopped when the stop button is operated or when the counting sensor S' does not detect paper sheets for a predetermined period of time or more.

A reversal button is provided to displace the peripheral surface portion of the gate rollers 24A, 24A that performs the gate function, and a reversal command from this reversal button causes the motor M ₁ to reverse for a predetermined period of time (for example, 1 second) through the control unit C. The paper sheets P are endless belt 7
Since the endless belt 7 is in contact with the gate rollers 24A, 24A when it is not in contact with the gate rollers, the gate rollers 24A, 24A are reversed by a predetermined amount, and the peripheral surface portion that performs the gate action is displaced. Also, the motor _M3 is started with the start button and stopped with the stop button.

Next, the paper sheet feeding operation in the above embodiment will be explained with reference to FIGS. 3 to 12.

FIGS. 3 to 12, which are explanatory diagrams of the operation based on FIG. 1, illustrate a case where the paper sheet P to be handled is thick, such as a postal letter.

FIG. 1 shows a state in which paper sheets P are stacked and stored on the pedestal 2 of the stacking section 1 in the lowered position.The paper sheets P are loaded from the front in FIG. 1 and hit the side plate 3. This allows them to be collected together. Note that although an arrow indicating the direction of rotation and a speed υ ₁ are shown in FIG. 1, this is for convenience of explanation, and the belt 15 and the endless belt 7 are shown moving in the forward rotation direction in FIG. It will not be done.

Next, when _the power button and start button of _the command unit R in FIG. 6, the pedestal 2 rises from the position shown in the first figure, the uppermost paper sheet P pushes up the detection lever 22, and the base end 22A of this detection lever 22 touches the sensor S.
At the same time, the endless belt 7 is turned on and operated, and the endless belt 7 assumes a driving and unwinding position, and the portion 7 of the endless belt 7 on the lower rear side of the rotary body 8 where the slack has occurred.
B ₁ is placed in pressure contact with the top surface of the top sheet P at the feeding end thereof.

The sensor S inputs a detection signal to the control section C by the aforementioned switching operation of the sensor S to the on state by the base end 22A of the detection lever 22. As a result, the motor _M1 of the belt motion applying means 10 starts rotating in the normal direction.
The endless belt 7 begins to rotate in the direction of the arrow via the belt 15 at a circumferential speed of υ ₁ (as shown in the third figure), and due to the frictional force with this endless belt 7, the top paper sheet P slides out at a speed of υ ₁ . At the same time, several sheets P of a lower order are also taken out and stopped against the guide member 25.

When the uppermost paper sheet P is further fed out, the lower surface of its leading edge first reaches the guide member 25, and is held between the endless belt 7 above the leading edge (note that the sheet to be processed If the thickness is intermediate, the tip hits the gate member 24 (guided in a state close to being held), and then its tip touches the gate member 24.
The gate member 24 enters between the gate rollers 24A, 24A constituting the
push downward. As a result, the gate member 24
The swing block 28 constituting the support means 26 is pivoted about the shaft 27 in the counterclockwise direction in FIG. The paper sheet is moved by pushing the gate member 24 while being held between the guide member 25 and the endless belt 7, and the leading edge of the paper sheet is moved between the gate member 24 and the endless belt without bending. Only one paper sheet P enters and is fed between the belt 7 and the second and subsequent paper sheets P, whose tips hit the circumferential surface of the gate member 24 and the guide member 25 and are stopped. (4th)
(Illustrated). In particular, the gate rollers 24A, 24A serving as the gate member 24 are not rotated in the paper sheet feeding direction and are in a non-rotatable state, so that the movement of the second and subsequent paper sheets P is reliably prevented. .

As shown in FIG. 4, when the swing block 28 of the first support means 26 is pushed down by the sheet P to be fed out and rotates counterclockwise in the figure around the shaft 27, the pin 47 Arm 4 of support means 44
The extension portion 46A of the arm 46 is pushed down, and the arm 46 is thereby rotated clockwise in the figure about its shaft 43 against the bias of the spring 48. This rotation causes the pulley 40 to move away from the pulley 36, and the entrance of the conveyance means 17 is opened.

In this state, the uppermost paper sheet P is fed out, and its leading edge is attached to the upper and lower guide plates 4 of the conveyance mechanism 17.
5A and 45B, and enters between the entrance ends of the upper and lower belts 34 and 35, which are opened up and down as described above, and the pulley 40 on the entrance side of the lower belt 35 resists the spring 47 and pulls the paper sheet. The paper sheet P is further pushed down by the thickness of the sheet P, and the force of the spring 47 pushes the sheet P
The tip of the is inserted into the mouth (as shown in Figure 5).

The endless belt 7 is in the drive feeding position from FIG. 3 to just before reaching FIG. 5, that is, the belt portion 7B ₁
The paper sheets P are fed out at a forced belt movement speed υ ₁ while being held in a position with only sagging, but when the state shown in FIG. In other words, the leading edge of the paper sheet P is the belt 34, 35.
When the belt is firmly held between
4, 35 in the direction of the arrow at a circumferential speed υ ₂ , the paper sheet P is pulled at a speed υ ₂ faster than the feeding speed υ ₁ by the endless belt 7, and the slack of the endless belt 7 is accordingly The resulting lower portion 7B ₁ is pulled by the paper sheet P and moved at the moving speed υ ₂ of the paper sheet P, and the amount of slack in the portion 7B ₁ decreases by the speed (υ ₂ - υ ₁ ), and the other side Slack occurs in the belt portion 7B ₂ (the portion of the endless belt 7 between the gate member 24 and the pulley 14) on the side of the rotating body 8 facing the conveyance mechanism 17 due to the speed difference (υ ₂ −υ ₁ ) (as shown in the sixth figure). ).

In this way, the rear end of the paper sheet P pulled by the transport mechanism 17 comes off the detection lever 22 (Fig. 7).
Then, the detection lever 22 rotates counterclockwise by its own weight, and while it comes into contact with the top surface of the next paper sheet P, the base end 22A of the detection lever 22 turns off the sensor S and operates. The detection signal is input to the control unit C, the motor M ₂ is activated through the control unit C, the pedestal 2 rises again, and the top surface of the next paper sheet P from the delivered paper sheet P pushes up the detection lever 22 . When the base end 22A turns on the sensor S and operates, the motor _M2 is stopped through the control section C, and the lifting of the pedestal 2 is also stopped (as shown in Figure 8). As a result, the next paper sheet P after the paper sheet P to be fed out is at a height position in preparation for feeding, that is, a height position at which the return posture of the endless belt 7 formed after that should be a drive feeding posture appropriate for feeding. In other words, the belt portion 7B ₂ of the endless belt 7 has no slack, only the belt portion 7B ₁ has sag, and the sag of the belt portion 7B ₁ of the endless belt 7 is at a height at which the deformation posture is appropriate for feeding. located in position. In addition, in FIG. 8, the rear end of the delivered paper sheet P is connected to the endless belt 7.
However, the lower part _7B1 of the endless belt 7 has almost no slack and is in a state of tension, and on the way from FIG. 8 to FIG. 9, the lower part _7B1 of the endless belt 7 The slack is completely eliminated and the belt is in a tensioned state, and the slack generated in the belt portion 7B ₂ (the belt portion on the right side of the rotating body 8) becomes maximum. Belt portion 7B ₂ of this endless belt 7
(The belt portion on the left side of the rotating body 8, that is, the belt portion between the gate member 24 and the pulley 14) has slack only during the period from the period from FIG. 8 to FIG. The rear end of type P is between the gate member 24 and the endless belt 7.
(Intermediate period between Figures 9 and 10)
Until then. Until that period, the amount of slack in the belt portion _7B2 of the endless belt 7 is increasing, so the belt portion of the endless belt 7 that contacts the belt 15 moves at the same speed as the speed υ ₁ of the belt 15. ing. However, during the above period (a period in which only the belt portion _7B2 of the endless belt 7 has slack), the belt portion _7B2 of the endless belt 7 moves at a speed υ ₂ through the paper sheet P, and the belt portion of the endless belt 7 7B ₁ and rollers 18, 19,
Since the belt portions at the pulley 13 position are under tension, these belt portions are also moved at a speed υ ₂ , and the belt portion of the endless belt 7 that is in contact with the belt 15 is under tension due to the speed difference (υ ₂ − υ ₁ ). Power is added,
As a result, the belt 15, which was being driven at a speed υ ₁ ,
The speed of movement is changed to υ ₂ via the freely rotating one-way clutch 16 to the speed increasing side between the pulley 13 and the shaft 11 on the drive side, and the movement is performed at that speed υ ₂ . As a result, during that period, all parts of the endless belt 7 are moved at a speed υ ₂ , and the endless belt 7 is maintained in the attitude shown in FIG. 9.

Note that if the one-way clutch 16 is not interposed between the drive-side shaft 11 and the pulley 13 and the pulley 13 is fixed to the shaft 11, during the above period (only the belt portion _7B2 of the endless belt 7 will slacken). belt15 for the entire period of
There is a speed difference (υ ₂
-υ ₁ ) is applied, and when processing long paper sheets P, the period becomes long, causing repeated expansion and contraction of the endless belt 7 and belt 15, and wear between both belts. , etc. will occur, shortening the life of both belts. In order to solve this problem, the one-way clutch 16 is provided.

The outer peripheral surface of the rotating body 8 is a smooth surface that easily slips between it and the endless belt 7. For example, as shown in FIG. 7, the belt portion of the endless belt 7 facing the gate member 24 moves at a speed υ ₂ . Even when the belt portion of the endless belt 7 that contacts the belt 15 is moved at a speed υ ₁ , the endless belt 7 is
Each part of the belt is moved smoothly by maintaining speeds υ ₁ and υ ₂ .

In the endless belt 7, the tip of the paper sheet P is the belt 3.
4 and 35 (as shown in the fifth figure) to the time when the rear end leaves the gate member 24 (the ninth figure).
Up to the middle point between the figure and FIG. 10, the paper sheet P is in a driven feeding position in which it moves following the movement of the paper sheet P. The driven feeding posture of the endless belt 7 is as follows:
A belt shape deformation posture in which the slack of B ₁ is transferred to the belt portion 7B ₂ , and a slack transition completion posture in which the slack has been transferred from the belt portion 7B ₁ to the belt portion 7B ₂ (a posture in which slack occurs only in the belt portion 7B ₂ ). It is made up of Note that among the types of paper sheets to be processed, in the case of paper sheets having a short length in the feeding direction, the driven feeding posture is only the belt shape deformation posture, and the slack transition completion posture is not taken. Because in that case, belts 34, 35
While the slack due to the paper sheets held in between is being transferred from the belt portion 7B ₁ to the belt portion 7B ₂ , the rear end of the paper sheets is attached to the gate member 24.
This is because it passes through. After the rear end of the sheet leaves the gate member 24 in this manner, the endless belt 7 returns to the return position from the driven feeding position to the driving feeding position (from the intermediate period in FIGS. 9 and 10). (the period immediately before Figure 11).

When the rear end of the paper sheet P leaves the gate member 24, the swing block 28 supporting the gate member 24 and the guide member 25 is rotated clockwise around the shaft 27 by the force of the biasing spring 29. A gate roller 24A that moves and constitutes the gate member 24,
24A is returned to a position where an initial predetermined distance 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 of the endless belt 7 is in contact with the rotating body 8,
Further, the guide member 25 also hits the leading end of the stacked paper sheets P at the return position and restricts this. Roller 24A, 2
4A, when the guide member 25 returns to its original position,
The lower surface of the endless belt 7 comes into contact with the rollers 24A, 24A due to elastic deformation. Further, when the rear end of the paper sheet P leaves the gate member 24, the moving speed υ ₂ of the paper sheet P no longer acts on the endless belt 7, and the belt 1
5 is forcibly moved at a speed υ ₁ by driving the shaft 11,
Due to this belt movement of the belt 15, the endless belt 7 is also moved at a speed _υ1 . Since the belt portion _7B1 of the endless belt 7 is regulated by contacting the gate rollers 24A, 24A, the belt movement of the endless belt 7 at a speed υ ₁ causes the endless belt 7 to take a return posture, and the belt portion 7B ₂ to reduce the slack in the belt portion 7B ₁ , and to create slack in the belt portion 7B1.
B ₁ is the top paper sheet P again as the slack increases.
(as shown in Figure 10).

When the endless belt 7 is further forcibly moved by the belt 15 at a speed υ ₁ , the slack in the belt portion _7B2 is completely eliminated, and the endless belt 7 assumes a drive feeding posture for the next paper sheet P. The paper sheet P begins to be fed out (see FIG. 11). The belt portion _7B1 of the endless belt 7 pushes out the paper sheet P, and the leading edge of the paper sheet P presses down and passes through the gate rollers 24A, 24A as in the previous feeding operation (as shown in Figure 12).

The operation of feeding paper sheets P by the endless belt 7 is as follows:
The state shown in FIG. 12 shifts to the state shown in FIG. 4, and the operation of feeding out the paper sheets P is repeated in the same manner.
Note that the distance between the entrance ends of the belts 34 and 35 becomes smaller as the rear end of the paper sheet P is moved as shown in FIG. By pressing down, it can be expanded for a predetermined distance. This predetermined interval is the same as in FIG.

Paper dust, etc. that adheres to the outer surface of the endless belt 7 while feeding out the paper sheets P is transferred to the circumferential surface of the cleaning roller 19, which is in constant rolling contact with the endless belt 7, and the transferred dust is wiped off by the sponge roller 21. The dust is removed and collected in the dust receiving box 20. This ensures frictional contact between the endless belt 7 and the paper sheets P. The leading edge of the sheet P that has entered between the belts 34 and 35 intercepts the sensors S' and S' during the transition from FIG. 5 to FIG. 6, and the rear end of the sheet P blocks the sensor S. ', S' (state in FIG. 12) causes the sensors S', S' to input a sheet passing signal to the control section C. The paper sheet passing signals from the sensors S' and S' are used in the control section C as a counting signal.

When the last paper sheet P is fed out as described above, there is no paper sheet P on the pedestal 2, and the sensor S',
Even after a predetermined period of time has passed after the last paper sheet P passed between S', the sensors S' and S' do not detect the paper sheet P, and the control unit C stops motor _M1 and motor _M3 . Stopping the motor _M1 stops the belt 15 and the endless belt 7, and stopping the motor _M3 stops the belt 3.
4, 35 is stopped. Furthermore, this belt 34,3
When belt 5 stops, the last sheet P is transferred to this belt 3.
It has passed between 4 and 35.

The control section C applies a reverse drive signal to the motor _M2 for a predetermined period of time at the same time as applying the stop signal to the motor _M1 and the motor _M3 . As a result, motor M ₂
is reversed for a predetermined period of time and the pedestal 2 is lowered, and when the pedestal 2 is lowered to the first position shown in the figure, this motor
M ₂ and pedestal 2 are stopped. Furthermore, the stopping operation of motor M ₁ and motor M ₃ mentioned above and motor M ₂
The reverse rotation stop operation can be performed in exactly the same way by operating the stop button of the command section R, and is performed through the control section C by operating the stop button. The paper sheet processing work is completed as described above, but at the end of this work or the start of the next processing work, the command unit R
Operate the reverse button. By operating this reverse rotation button, a reverse rotation command is input from the command section R to the control section C, and the control section C reverses the motor _M1 for a predetermined period of time.
If there is no paper sheet P on the pedestal 2, or if there is a paper sheet P on the pedestal 2 but the endless belt 7 is not in contact with the paper sheet P, the endless belt 7 The portion facing the gate rollers 24A, 24A is elastically deformed and in contact with the gate rollers 24A, 24A. Therefore, the reversal of the motor _M1 for a predetermined period of time causes the belt 15 of the belt motion imparting means 10 to roll in the opposite direction, and the endless belt 7 to roll 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 one-way clutch 32 in the opposite direction (clockwise in FIG. 1) with respect to the sheet feeding direction.

Therefore, the gate action surface portions of the gate rollers 24A, 24A are moved, and new portions directly face the endless belt 7 and take charge of the gate action.

Due to this action, the gate rollers 24A, 24A
The endless belt 7 can be rotated without manual rotation.
The gate rollers 24A, 24A can be rotationally displaced via the endless belt 7 by using the banding force imparting means 10 to the gate rollers 24A, 24A.
The circumferential surface of the ring is used evenly, which prevents localized wear.

Note that the reversal command for the motor _M1 can be made by operating the reversing button as described above, as well as by using the counting sensor.
It may also be based on S' and a detection section in the control section C. In this case, if the counting sensor S' does not detect a paper sheet for a predetermined period of time while the motor _M1 is in the forward rotation state, the detection section determines that there is no paper sheet P on the pedestal 2. The output signal from the detection section causes the motor _M1 to reverse rotation via the control section C.

Further, in this embodiment, when the trailing end of the paper sheet P leaves the gate rollers 24A, 24A, the lower surface of the endless belt 7 is elastically deformed, causing the rollers 24A, 24A to
24A, and through this contact the endless belt 7
is in the return position and a slack is formed in the belt portion _7B1 , but this is not limited to this example, and when the rear end of the paper sheet P leaves the gate rollers 24A, 24A, , the lower surface of the endless belt 7 may first come into contact with the upper surface of the next paper sheet, and through this contact a slack may be formed in the belt portion _7B1 . Note that the gate roller 24
The reverse rotation of A and 24A is performed by using the reversing movement of the endless belt 7, and when the endless belt 7 is not in contact with paper sheets, the outer surface of the endless belt 7 is in contact with the gate member. This is considered a necessary condition. However, this contact state refers to the state at the end or start of sheet processing work, and does not necessarily mean that contact (contact between gate rollers 24A, 24A and endless belt 7) during sheet feeding work. ) is not a necessary condition.

FIG. 13 shows a situation in which not thick paper sheets such as postal letters but thin paper sheets such as postcards and slips are accumulated and fed out. In this case, the outer peripheral surface of the endless belt 7 is particularly Gate rollers 24A, 24
This is an example of the feeding operation of paper sheets that can pass between the gates formed by A. In this case, gate roller 2
4A, 24A and the guide member 25 can be fed out with their positions fixed, and the feeding operation of the endless belt 7 is substantially the same as described above, allowing paper sheets to be fed out one by one. In this embodiment, the outer surface of the endless belt 7 has grooves 7A, 7A, and the gate rollers 24A, 24A face the surfaces 7A ₂ , 7A ₂ of the grooves 7A, 7A, but are limited to this example. Instead, the endless belt 7 may have only the outer surface _7A1 . Gate rollers 24A, 24A also have this outer surface 7.
It may be placed opposite _A1 . and gate roller 2
Although two rollers 4A and 24A are provided in this embodiment, they may be provided as one roller, and in this case, it is preferable to use rollers that are long in the roller axis direction. Note that when the endless belt 7 is in pressure contact with the rotating body 8, a predetermined distance is left between the bottom surface of the endless belt 7 and the gate rollers 24A, 24A, but when the endless belt 7 moves in the normal rotation direction, Gate rollers 24A, 24
This is to prevent A from imparting a strong frictional resistance force to the endless belt 7, and depending on the usage pattern, there may not be a gap between the gate rollers 24A, 24A and the endless belt 7.

Although the endless belt 7 is one belt, it may be a plurality of endless belts arranged in parallel in the width direction. Furthermore, in this embodiment, the stacked paper sheets are stacked vertically, the endless belt 7 is placed at a certain height above the stacked paper sheets, and the stacked paper sheets placed on the pedestal 2 are stacked against the endless belt 7. Although this is an example in which the paper sheets are lifted up, pressed, and fed out from the upper side, the endless belt 7 is placed facing the lower side of the accumulated paper sheets that are stacked in the vertical direction, and the endless belt 7 is It is also possible to feed out the paper sheets in order starting from the bottom. This group of stacked paper sheets is not stacked vertically, but aligned horizontally, and an endless belt 7 is placed at the frontmost position.
Alternatively, the paper sheets may be fed out in order starting from the frontmost sheet. In this case, a pressing plate or the like is used to press the stacked paper sheets from the rearmost paper sheet side toward the endless belt 7, but instead of moving the pedestal 2 in the horizontal direction in this embodiment, the pedestal 2 can be moved horizontally. 2 may be used as a pressure plate. It goes without saying that the pressing plate may be moved by a tension spring that biases it toward the endless belt 7 instead of being moved by a motor.

The belt motion applying means 10 uses pulleys 13 and 14 and a belt 15, but it goes without saying that rollers (for example, rollers 18) may also be used. In this embodiment, the one-way clutch 16 is interposed between the shaft 11 and the pulley 13, but the motor
In the drive transmission system from M ₁ to pulley 13 (between the drive transmission gear, drive transmission pulley, etc. and the shaft, etc.)
A one-way clutch 16 may be provided. However, if the length of each sheet to be processed is constant, the one-way clutch 16 may not be necessary.

Further, in this embodiment, the conveying means is the pulleys 36, 3.
7, 40, 41 and belts 34, 35, but they may also be a group of rollers or a combination of both. Furthermore, the motor constituting the belt motion imparting means of this embodiment
Although a reversible motor is used for M ₁ , a motor that rotates only in the forward rotation direction is used, and a forward/reverse transmission switching clutch is provided in the drive transmission system from motor M ₁ to shaft ₁₁ . It is also possible to use the clutch to convert normal rotation into reverse rotation and transmit it to the shaft 11 when a command is issued from the reverse direction belt movement command section. In addition, when feeding paper sheets, the motor
The normal rotation of _M1 is transmitted to the shaft 11 as normal rotation by the clutch.

Further, in this embodiment, the paper sheet feeding device is capable of processing paper sheets having different sizes in both thickness and length in the feeding direction. However, depending on the purpose of use, the thickness may vary depending on the purpose of use, but the length in the feeding direction is constant, or the thickness may vary depending on the purpose of use. It goes without saying that it can be used for processing paper sheets whose length in each direction is constant.

In this embodiment, the pedestal 2 rises when the lever 22 leaves the rear end of the fed sheet (see Figs. 7 to 8).
figure). At this time, the endless belt 7 is in a posture in the middle of feeding by contacting the paper sheet to be fed out, particularly in a driven feeding posture, and does not come into contact with the paper sheet that is to be fed next after being raised on the pedestal 2, and is in the return position. (Fig. 10), and from that point (Fig. 10)
As shown in the figure, the endless belt 7 assumes the optimum driving and feeding posture for feeding. In this example, the pedestal 2 rises every time one paper sheet is fed out. This example is for thick letters. As shown in Fig. 13, in the case of thin letters, the pedestal 2 rises every time about 30 sheets decrease. The sensor S is switched by the lever 22, and the pedestal 2 is raised each time.

In this example, the pedestal 2 is raised when the endless belt 7 is in the driven feeding position, but by changing the installation position of the lever 22, etc. In addition, if a very high feeding speed is not required, raise the pedestal 2 when the endless belt 7 returns to the driving feeding position, and adjust the driving feeding posture of the endless belt 7 to an appropriate position for feeding. It may also be transformed into the extended position.

Note that the detection means for detecting the positional state of the foremost paper sheet in the paper sheet group is constituted by the lever 22 and the sensor S in this example, but may also be a light emitting/receiving sensor. To be more specific, for thick letters, it is placed at the position of one to the next few sheets, and for thin letters, it is placed from the most forward position to about 30 sheets that follow. A light emitting/receiving sensor is installed, and the light receiving sensor receives the light that was blocked by paper sheets due to the decrease in paper sheets.
may be moved.

In addition, a sensor is provided to detect a specific part of the endless belt 7 at a predetermined time (for example, during the drive-feeding posture), and detects changes in the posture of the endless belt 7 and changes associated with the decrease in the number of paper sheets. may be moved. Furthermore, in FIG. 3 of this example, a regulating plate is provided that contacts the upper surface of the upper paper sheet group and restricts the rising of the paper sheet group, and a pressure is applied to detect the pressing force of the paper sheet group against the regulating plate by the pedestal 2. A detector is installed, and when the pressure detector detects a predetermined pressure when the pedestal 2 is raised, the pedestal 2
It may also be possible to stop the increase in . Therefore, the configuration is not limited to the lever 22 and sensor S as described above. Note that the conveyance rotating body in the embodiment is the pulley 3 around which the belt is wound.
6 and 40, but it goes without saying that other rollers may be used or a combination of rollers and pulleys may be used.

[Effect of idea]

As explained above, the present invention feeds out stacked paper sheets one by one by utilizing the belt deformation movement in which the endless belt is transformed from the driving feeding position to the driven feeding position and then returning to the driving feeding position again. The gate member, which is disposed opposite to the rotating body located on the inner surface of the endless belt and forms a gate portion through which a sheet of paper can pass between it and the outer surface of the endless belt, is swung against the urging force. The rotation of one of a pair of rotary conveyance bodies constituting the entrance section of the unloading means for conveying out paper sheets that have passed through the gate section is supported by the movable first support means. The second support means is supported movably in a direction away from the body, and the second support means are moved away from each other in conjunction with the retreating movement of the first support means. Since the interlocking mechanism for moving the paper sheet in the direction is provided, when the leading edge of the paper sheet passes through the gate section, the second support means is activated through the interlocking mechanism, and the gap between the conveying rotors at the entrance of the conveying means is opened, so that the gate The leading edge of the paper sheet coming out of the section is smoothly delivered to the conveyance mechanism, and the leading edge of the paper sheet can be prevented from being bent or damaged.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of the present invention before it is fed out, Fig. 2 is a right side view of the same, Figs. 3 to 12 are explanatory diagrams of the feeding process, and Fig. 13 is a thin FIG. 14 is a control block diagram showing an example of feeding paper sheets. 1...Paper sheet accumulation section, 7...Endless belt, 8...
...Rotating body constituting the posture holding means, 9...Roll constituting the posture holding means, 10...Fashion imparting means, 11, 12...Axles constituting the force imparting means,
13, 14...Pulley constituting the posture holding means and belt motion imparting means, 15...Belt constituting the posture maintaining means and belt motion imparting means, 16...One-way clutch constituting the belt motion imparting means, 17... Conveyance mechanism as conveyance means, 18...Cleaning roller constituting posture holding means, 19...Cleaning roller constituting posture holding means, 24...Gate member constituting a gate portion with the outer surface of endless belt 7, 24A, 24A...gate roller, 26...
First support means, 27... shaft, 28... rocking block, 44... second support means, 46... arm, 46A... extension part, 47... pin, 50...
Interlocking mechanism, M1...Motor constituting the banding force applying means, p...Paper sheets, R...Command unit as a reverse direction banding command unit.

Claims (1)

[Claims for Utility Model Registration] Part of the sheet is brought into a freely deformable state, and its outer surface is brought into contact with the surface of the foremost paper sheet of the stacked paper sheet P group, and the sheet is forcibly moved by the banding motion imparting means 10. an endless belt 7 that feeds out paper sheets; posture holding means 8, 9, 13, 14, 15, 18, 19 that clamps a predetermined portion of the endless belt 7 and holds the belt in a driving and feeding posture; The outer surface of the endless belt 7 and the gate member 24
a gate section that allows only one sheet of paper P fed by the endless belt 7 to pass through and restricts the feeding of the following paper sheets; The endless belt 7
and a conveying means 17 for transforming the endless belt 7 from the driving dispensing posture to the driven dispensing posture, and after the endless belt 7 is transformed from the driving dispensing posture to the driven dispensing posture and then returning to the driving dispensing posture again, one sheet of paper is conveyed. A rotating body 8 located on the inner side of the belt of the endless belt 7 and an outer surface of the endless belt 7 that is disposed opposite to the rotating body 8 and in contact with the rotating body 8. A gate member 24 that allows the passage of sheets of paper, and a first support means 2 that supports the gate member 24 so as to be retractable against the endless belt 7 against the urging force.
6, a pair of conveying rotors 36 and 40 constituting the entrance portion of the conveying means 17, and a second conveying rotor 40 movably supporting one conveying rotor 40 in a direction away from the other rotary body 36. The supporting means 44 and the second supporting means 44 are moved to the conveying rotating bodies 36, 40 in conjunction with the retracting movement of the first supporting means 26.
interlocking mechanism 50 that moves the two in directions away from each other.
A paper sheet feeding device comprising: and.