JPH0611972Y2 - Paper sheet feeding device - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial field of application) The present invention relates to postcards, envelopes (including blank envelopes and so-called postal letters enclosing documents), various cards, slips, banknotes (banknotes). Used for payment machines, etc., containing paper money such as paper money enclosing packs and paper money enclosing envelopes in which a prescribed number of paper money is enclosed), bills, checks, etc., and collect one paper sheet from the accumulated paper sheet group. The present invention relates to a paper sheet feeding device for feeding sheets one by one. It should be noted that one sheet in this specification is a concept including one envelope, one bag containing a bill, and the like, and they are collectively referred to as such.

(Prior Art) Conventionally, as a feeding device for feeding each of the above-mentioned paper sheets one by one using a loose endless belt, it is disclosed in Japanese Patent Laid-Open Publication No.
There is one disclosed in Japanese Unexamined Patent Publication No. 0-61427. In the conventional device shown in this publication, the outer surface is brought into contact with the frontmost sheet surface of the accumulated sheet group by partially deforming the sheet, and the sheet is forcedly swung by the swaging means. An endless belt that feeds out paper sheets, a posture holding unit that holds a predetermined portion of the endless belt in a driving and feeding posture, an outer surface of the endless belt, and a gate member. 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. The paper is sandwiched and conveyed, and has a conveying means for deforming the endless belt from the driven feeding posture to the driven feeding posture through the paper sheets, and the endless belt is changed from the driven feeding posture to the driven feeding posture. This invention was made with paper sheets to emit intermittently Repetitive one by one by returning again to drive the feeding position after the form.

(Problems to be solved by the invention) In the above-mentioned sheet feeding device, however, the belt movement imparting means for rotating the endless belt uses the drive belt that makes frictional contact with the outer surface of the endless belt. By driving and rotating, the endless belt is rotated by friction caused by the surface contact between the drive belt and the endless belt. Therefore, if a large load is applied to the endless belt from the side of the endless belt when feeding the endless belt, the endless belt is rotated. Slips between the drive belt and the drive belt. The occurrence of this slip is
This causes a problem that the feeding ability of paper sheets, for example, the feeding ability of 600 sheets per minute is reduced to the feeding ability of about 400 sheets per minute.

In addition, since the outer surface of the endless belt is flat, slippage not only with the drive belt but also with the paper sheet is likely to occur, and paper dust, dust, etc. generated by frictional contact with the paper sheet are also generated. By adhering to the outer surface of the endless belt, the slip generated between the endless belt and the paper sheet becomes more serious.

In addition to the above-mentioned decrease in processing capacity, the occurrence of such slips shortens the service life of not only the endless belt but also the drive belt, and the generation of paper dust and belt abrasion dust impairs the health of machine operators. Become.

In view of this, the present invention has been made for the purpose of solving the above-mentioned problems of the prior art, and prevents the occurrence of slip between the endless belt and the band movement imparting means, and improves the feeding ability of paper sheets. It is intended to provide a paper sheet feeding device using an endless belt which does not cause deterioration.

[Constitution of device]

(Means for Solving the Problems) In order to solve the problems of the above-mentioned conventional technology, the present invention makes a part of the sheet surface freely deformable so that its outer surface is the frontmost sheet surface of the accumulated sheet group. An endless belt that is brought into contact with the endless belt to feed out the paper sheets by being forcibly swung by the banding imparting means; a posture holding means that holds a predetermined portion of the endless belt and holds the belt in a driving and feeding posture; A gate portion configured by the outer surface of the endless belt and a gate member, which allows only one sheet fed out by the endless belt to pass through and regulates the feeding of the sheet following the sheet, and a belt movement of the endless belt. Driven at a speed higher than the speed, and nipping and conveying the paper sheet passing through the gate portion, and having a conveying means for deforming the endless belt from the drive feeding posture to the driven feeding posture through the paper sheet, Nothing In the feeding device that intermittently feeds paper sheets one by one by deforming the end belt from the driven feeding posture to the driven feeding posture and then returning to the driven feeding posture again, the endless belt has teeth on its outer surface. The toothed belt is formed with a toothed surface formed at a constant pitch, and the band-moving imparting means includes a toothed pulley that meshes with the teeth on the outer surface of the endless belt. It has a rotating body facing each other and provided in the endless belt, and a first roll provided in the endless belt at a position facing the stack of paper sheets, and sandwiches the endless belt with the first roll. The toothed pulley and the second roll are arranged so that the endless belt is forcibly rotated by the forced rotation of the toothed pulley.

(Operation) With the above configuration, the teeth of the toothed pulley mesh with the teeth of the outer toothed surface of the endless belt, and the rotation of the toothed pulley transmits the rotation of the toothed pulley to the endless belt through the teeth. As a result, the rotation is transmitted to the endless belt with no slippage, and the protrusions of the teeth on the outer surface of the endless belt come into contact with the paper sheet surface, so the occurrence of slip between paper sheets is wide. The number of paper sheets is reduced and the paper sheets are reliably fed out.

(Embodiment) Hereinafter, the present invention will be described with reference to an embodiment shown in the drawings.

In the illustrated embodiment, the paper sheet stacking unit 1 for stacking and mounting thick paper sheets P such as a mail letter has a paper sheet P as shown in the front view in FIG. 1 and the right side surface in FIG. It shows a case in which the sheets are stacked and supported in the vertical direction, and the uppermost paper sheets are sequentially fed out.

In the pedestal 2 for accumulating and supporting the paper sheets P, the shafts 5, 5 projecting to the side of the pedestal 2 are respectively provided in the collars 5a in the guide grooves 4, 4 formed in the side plate 3 on one side in the vertical direction. , 5a to guide vertical movements, and the ends of the shafts 5, 5 are coupled to a belt 6 arranged along the outside of the side plate 3 to drive the belt 6. The pedestal 2 is raised as the paper sheet P is fed out by the rotation of M _{2 in} the normal direction.

The endless belt 7 is a wide belt made of a material having a large frictional force such as rubber as shown in FIG. 3 as a single body, and an appropriate number of grooves 7A, 7A are formed on the outer surface in the longitudinal direction. .. extending in the width direction of the belt 7 are formed at a constant pitch on the ridges formed by 7A, 7A, and the projections at the tips of these teeth 8, 8 ...
To be contacted with.

The endless belt 7 includes a rotating body 10 that is freely rotatably provided on a shaft 9 at a position deviated from the end of the stacking unit 1 on the payout side, and has a smaller diameter than the rotary member 10 above the end of the stacking unit 1 on the payout side end. First roll 1 rotatably provided on the shaft 11 at the position
It is wound loosely on 2.

The rotating body 10 is formed on a roller portion 10A in the shape of a true cylinder having an axial length equal to or slightly larger than the belt width of the endless belt 7 and both axial ends of the roller portion 10A. And flange portions 10B and 10B. The flange portions 10B, 10B have conical surfaces 10 in the shape of a truncated cone in which inner surfaces facing each other expand in the longitudinal direction from the axial ends of the roller portion 10A outward in the axial direction.
C and 10C, and the role of these conical surfaces 10C and 10C is to automatically correct the deviation in the width direction when the endless belt 7 deviates in the belt width direction when feeding the paper sheets. If the endless belt 7 shifts in the belt width direction, one side edge portion of the endless belt 7 rides on the corresponding conical surface 10C,
Since the conical surface 10C is also integrally rotated by the rotation of the rotating body 10, the side edge portion of the endless belt 7 is moved in the direction of the conical surface 10C in the direction of the taper, that is, the roller portion 10A, and the endless belt 7 is moved in the belt width direction. The gap is automatically corrected.

At the upper position of the endless belt 7, there is provided a band movement imparting means 13 which gives the endless belt 7 a forced belt movement at an outer surface speed υ _{1 in} the direction of the arrow in FIG. . The band movement imparting means 13 in the illustrated embodiment is a shaft 1 disposed above the first roll 12 shown in FIG.
4 is constituted by a toothed pulley 15 and teeth 16 formed on the peripheral surface of the toothed pulley 15 are meshed with the teeth 8 of the endless belt 7 at the portion wound around the first roll 12. The tooth 16 formed on the peripheral surface of the toothed pulley 15 meshes with the tooth 8 of the endless belt 7 wound around the first roll 12, and the toothed pulley 15 and the first toothed pulley 15 The endless belt 7 is held by the roll 12. A reversible motor M ₁ is connected to the shaft 14 of the toothed pulley 15. And this reversible motor M ₁
To drive the toothed pulley 15 and the endless belt 7 in the normal direction in the direction of the arrow in FIG.
Further, the reversible motor M ₁ is reversely driven on the basis of a command from a reverse rotation command unit R described later, whereby the toothed pulley 1
5. The endless belt 7 is designed to be reversely swung in the direction opposite to the direction of the arrow in FIG.

On the rear side of the first roll 12, there is provided a second roller 17 as a posture holding means for sandwiching the endless belt 7 with the roll 12 and holding the posture of the endless belt 7.
Is provided in such a manner that it is always in contact with the outer surface of the second roller 17 and is rotatably driven.
The paper dust or the like that is in constant contact with the inner sponge roll 19 and adheres to the outer surface of the endless belt 7 is attached to the sponge roll 19 via the second roll 17 to be removed.
It is designed to be delivered to the dust collecting box 9 and collected in the dust receiving box 18. As a result, the endless belt 7 further enhances the action of preventing slippage between the endless belt 7 and the paper sheet to be delivered due to the teeth 8 of the endless belt 7, and enables reliable delivery of the paper sheet. The posture maintaining means in the above embodiment is composed of the rotating body 10, the toothed pulley 15, the first roll 12, and the second roll 17.

A paper sheet detection lever 20 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 20 can be vertically swung by a shaft 21 toward the machine body (not shown). , Its base end 20A is adapted to operate a sensor S such as a photo sensor or a proximity switch to be turned on / off.
When the detection lever 20 is pushed up by the paper sheet P and the sensor S is turned on at the base end 20A of the paper sheet P, the sensor S starts the reversible motor M ₁ of the band motion imparting means 13 in the normal direction and also receives the pedestal. A detection signal for stopping the _second ascending motor M ₂ is issued.

The gate member 22 together with the guide member 23 is a first support means 24 capable of retreating against the outer surface of the endless belt 7 against the bias.
It is supported by.

In the illustrated embodiment, the first support means 24 includes a swing block 26 that is supported by the machine body so as to be swingable in the vertical direction by a shaft 25, and a biasing spring 27 that biases the swing block 26 upward. , A bracket 28 and a shaft 29.

As shown in FIG. 2, the bracket 28 is fixed to the swing block 26, and the left and right side frames 28a, 28a of the bracket 28 are provided so as to project upward.
The shafts 29 of the two left and right gate rollers 22A, 22A as the gate member 22 are supported between a and 28a via the one-way clutch 30 so as to be freely rotatable in the reverse direction and non-rotatable in the forward direction. As shown in FIG. 2, when the endless belt 7 is pushed up by the paper sheet P and is held in the drive-feeding posture (state shown in FIG. 4), the positions of the gate rollers 22A, 22A are set to the endless belt 7 described above. There is only one sheet P of the minimum thickness type among various sheets between the edges of the grooves 7A, 7A and the edges of the rollers 22A, 22A. It is designed to have a predetermined gap through which it can pass. In this way, the gate rollers 22A, 22A and the outer surface of the endless belt 7 form a gate portion. In this embodiment, the gate rollers 22A and 22A are fixed to the shaft 29, and the one-way clutch 30 is interposed between the shaft 29 and the bracket 28. You may make it interpose the one-way clutch 30 in between.

In this embodiment, the guide member 23 is provided for aligning the leading ends of the paper sheets P and guiding them to the gate portion.

The lower end of the guide member 23 is the swing block 2
6 is fixed to the upper and lower portions of the gate rollers 22A, 22A as the gate member 22 at the left and right portions thereof.
The guide member 23 is a circular arc surface (a surface that prevents the paper sheet P from abutting on the roller peripheral surface) that is larger than the roller peripheral surface that is curved and rises approximately approximately with the roller peripheral surfaces of 2A and 22A.
The end portion of the arc surface is formed so as to be positioned slightly lower than the upper end surfaces of the rollers 22A, 22A. As a result, the leading end of the paper sheet P first comes into contact with the arc surface of the guide member 23 when the endless belt 7 feeds it, and then the roller 2
The sheets P are brought into contact with the peripheral surfaces of the sheets 2A and 22A so that the sheets P are reliably separated from each other.

As the urging spring 27, a tension spring stretched between the lower end of the swing block 26 and the machine body side is used. With this spring urging, the endless belt in which the gate member 22 is located directly below the rotating body 10 is used. The rocking limit of the rocking block 26 is defined by the stopper 31 at a position where a predetermined gap is formed with respect to the outer surface of 7. 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 FIG. 1, the gate rollers 22A and 22A are in contact with the surfaces of the grooves 7A and 7A of the endless belt 7. Are in contact.

Next, the transport mechanism 32 is composed of upper and lower belts 33 and 34, and pulleys 35 and 3 around which the upper belt 33 is wound.
6, the shaft 37 of the pulley 35 on the inlet side is fixedly provided, and the arm 38 rotatably supported by the shaft 37.
A pulley 36 on the outlet side is pivotally supported at the other end of the guide plate 39. The lower part of the arm 38 is higher than the lower running side of the belt 33 and extends in the vicinity of the rotating body 10.
Is fixed. Of the pulleys 40, 41 around which the lower belt 34 is wound, the shaft 43 of the pulley 41 on the outlet side is fixedly provided, and is rotatably supported by the shaft 43 and constitutes the second supporting means 44. A pulley 40 on the inlet side is axially attached midway 46. Also, on the aircraft side,
A guide plate 45 is fixed at a position slightly lower than the upper traveling side of the belt 35.

The other end of the arm 46 extends to a lower portion of the swing block 26 of the first support means 24, and the extension portion 4 of the arm 46 is extended.
6A is a shaft 3 about the shaft 25 of the swing block 26.
The lower surface of a pin 47 provided at a position deviated to the side opposite to 0 is constantly abutted by the bias of a spring 48, and the extension portion 46A and the pin 47 constitute an interlocking mechanism 50.

The arm 38 is pulled by a spring 49 so that the belts 33, 34 on the movable pulleys 36, 40 side are brought into pressure contact with the belts 34, 33 on the fixed pulleys 41, 35 side. .

The shafts 37 and 43 of the transport mechanism 32 are connected to the motor M ₃
Is transmitted through a gear group (not shown) to be forcibly driven, and the peripheral speed of these belts 33, 34 is faster than the peripheral speed υ ₁ due to the forced banding of the endless belt 7. _It is set to ₂ .

In the figure, S'is a counting sensor that counts the number of sheets P passing through the transport mechanism 32, and is attached to each arm 38, 46 via a support member (not shown).

FIG. 15 is a control block diagram showing a power button,
It has a command section R including a start button, a stop button, a reverse button, a control section C which is operated by signals from a sensor S, and a counting sensor S '.
₁ , M ₂ , M ₃ are controlled.

Normally, by operating the power button and the start button of the command section R, the motor M ₂ is driven in the forward direction of the cradle through the control section C, and the lever 20 on the upper surface of the sheet P on the cradle 2 is operated. When the sensor S is turned on to operate the motor M ₂ through the control unit C, the motor M ₁ is stopped and the motor M ₁ is rotated in the forward direction, and the endless belt 7 is fed out through the toothed pulley 15 (direction of arrow in FIG. 1). ) To a peripheral 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 the counting sensor S ′ does not detect the paper sheet for a predetermined time or longer.

A reverse rotation button is provided to change the gate surface of the gate rollers 22A, 22A, and the motor M ₁ reverses through the control unit C for a predetermined time (for example, 1 second) in response to a reverse rotation command from the reverse rotation button. When 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 22A and 22A.
The gate rollers 22A, 22A are reversed by a predetermined amount, and the peripheral surface portion that acts as a gate is displaced. The motor M ₃ is started by the start button and stopped by the stop button.

Next, the feeding action of the paper sheets in the above embodiment will be described with reference to FIGS. 4 to 13.

4 to 13 shown as action explanatory diagrams based on FIG.
The figure shows a case where the paper sheet P to be handled is thick like a mail letter.

FIG. 1 shows a paper sheet P on the receiving table 2 of the stacking unit 1 in the lowered position.
Shows a state in which the paper sheets P are stacked and stored.
In the figure, it is carried out from the front, and is collided and integrated by hitting the side plate 3. It should be noted that the arrow indicating the direction of rotation and the speed υ ₁ are entered in this FIG. ₁ , but this is for convenience of explanation, and the toothed pulley 15 and the endless belt 7 are in the normal direction in FIG. It will not be mobilized.

Next, when the power button and the start button of the command section R in FIG. 15 are operated, the motor M ₃ rotates through the control section C, the belts 33 and 34 start to rotate, and on the other hand, the motor M ₂ starts and the belt starts. The pedestal 2 is raised from the position shown in FIG. 1 via 6 and the uppermost sheet P is detected by the detection lever 2
0 is pushed up, the base end 20A of the detection lever 20 switches the sensor S to ON and operates, and the endless belt 7 is in the drive-feeding posture, and is located on the lower rear side of the rotating body 10 where the slack of the endless belt 7 has occurred. The portion 7B ₁ 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 ON state by the base end 20A of the detection lever 20. As a result, the band movement imparting means 13
The motor M ₁ of the toothed pulley 15 is rotated in the normal direction to rotate the toothed pulley 15, and the teeth 16 of the toothed pulley 15 move to the endless belt 7.
Because the endless belt 7 is engaged with the teeth 8 of the
_When it starts to rotate in the direction of the arrow at ₁ (shown in FIG. 4), the uppermost paper sheet P is slid out at a speed υ ₁ due to the frictional force with the tip projections of the teeth 8 of the endless belt 7. As a result, several lower sheets P are also taken out, and the guide member 23
Can be stopped by hitting.

When the uppermost paper sheet P is further fed out, the lower surface of the leading edge thereof first reaches the guide member 23, 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 22, and then the tip thereof is between the gate rollers 22A, 22A constituting the gate member 22 and the endless belt 7. It goes in and pushes this gate member 22 downward. As a result, the swing block 26, which constitutes the support means 24 of the gate member 22, is pivotally displaced about the shaft 25 in the counterclockwise direction in the figure against the biasing spring 27, as shown in FIG. The gate member 22 is swung together with the guide member 23, and the leading edge of the paper sheet is clamped between the guide member 23 and the endless belt 7 and moved by pushing the gate member 22, and the leading edge of the paper sheet is bent. Only one sheet P enters between the gate member 22 and the endless belt 7 without being bent, and is fed, and the leading ends of the second and subsequent sheets P are the peripheral surface of the gate member 22 and Guide member 23
It is placed in the place where it was stopped by hitting (Fig. 5). In particular, gate rollers 22A and 22A as the gate member 22
Does not rotate 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.

As shown in FIG. 5, when the swing block 26 of the first supporting means 24 is pushed down by the feeding paper sheet P and pivots about the shaft 25 in the counterclockwise direction in the drawing, the pin 47 moves the second block.
The extension portion 46A of the arm 46 of the support means 44 is pushed down, whereby the arm 46 is pivoted about its shaft 43 in the clockwise direction in the figure against the bias of the spring 48. By this rotation, the pulley 40 is separated from the pulley 35, and the entrance of the transporting means 32 is opened.

In this state, the uppermost paper sheet P is fed out, and the leading end of the uppermost paper sheet P passes between the upper and lower guide plates 39 and 45 of the transport mechanism 32 and is opened vertically as described above.
The pulley 40 on the entrance side of the lower belt 34 is further pushed down by the thickness of the paper sheet P against the spring 48, and the force of the spring 48 causes the paper sheet P of the paper sheet P to move. The tip is gripped (shown in Fig. 6).

The endless belt 7 is held in a driving and feeding posture until just before reaching FIGS. 4 to 6, that is, a posture in which only the belt portion 7B ₁ is slackened, and the paper sheet P is fed at the forced banding velocity υ _1. However, when the state shown in FIG. 6 is reached, it is transformed into the driven feeding posture. That is, when the front end of the paper sheet P is securely gripped between the belts 33 and 34, rotation of the peripheral speed υ ₂ of the belts 33 and 34 in the direction of the arrow causes the feeding speed υ _{1 of the} endless belt 7 to be exceeded. The paper sheet P is pulled at a high speed υ ₂ , and the lower side portion 7B _{1 in} which the slack of the endless belt 7 is generated due to this is pulled by the paper sheet P to move at a moving speed υ ₂ of the paper sheet P. The portion 7B ₁ is moved, and the amount of slack in the portion 7B ₁ is reduced by the speed (υ ₂ −υ ₁ ), while the rotating body 1 is moved.
No. 0 belt portion 7B ₂ on the side facing the transport mechanism 32 (the endless belt 7 between the gate member 22 and the toothed pulley 15).
A slack occurs in the part) due to the speed difference (υ ₂ −υ ₁ ) (shown in FIG. 7).

When the trailing edge of the paper sheet P pulled by the transport mechanism 32 is disengaged from the detection lever 20 (FIG. 8), the detection lever 20 rotates counterclockwise by its own weight, and the upper surface of the next paper sheet P is detected. The base end 20A of the detection lever 20 operates to switch off the sensor S while being in contact with, and the detection signal is input from the sensor S to the control unit C, the motor M ₂ is activated through the control unit C, and the cradle 2 is moved. The upper surface of the paper sheet P next to the paper sheet P that has been fed again pushes up the detection lever 20 and the base end 20A thereof.
When the sensor S is turned on and activated, the motor M ₂ is stopped through the control unit C, and the raising of the pedestal 2 is stopped (shown in FIG. 9). As a result, the paper sheet P next to the fed paper sheet P
Is a height position in preparation for feeding, that is, a height position at which the return posture of the endless belt 7 formed thereafter should be a drive feeding posture suitable for feeding, in other words, the endless belt 7
There is no slack in the belt portion 7B ₂ of the
The bending occurs only in B _1, and the belt portion 7 of the endless belt 7
The flexure of B ₁ is located at a height position that should be a deformed posture suitable for feeding. Further, in FIG. 9, the rear end of the fed paper sheet P is still in contact with the endless belt 7, but the lower side portion 7B ₁ of the endless belt 7 has almost no slack and is in a nearly tense state. 10 to FIG. 10, the slack of the lower portion 7B ₁ of the endless belt 7 completely disappears and the belt 7B ₂ (rotating member 10
(The belt part from the right side to the upper position in the figure)
The slack that occurs in is the maximum. The period in which the slack exists only in the belt portion 7B ₂ of the endless belt 7 (the belt portion at the left side position of the rotating body 10, that is, the belt portion between the gate member 22 and the toothed pulley 15) is shown in FIG. It is from the time when it reaches the middle of FIG. 10 to the time when the rear end of the fed paper sheet P passes through the gate gap between the gate member 22 and the endless belt 7 (intermediate time between FIGS. 10 and 11). By that time, the amount of slack in the belt portion 7B ₂ of the endless belt 7 is in an increasing state, so that the belt portion of the endless belt 7 contacting the toothed pulley 15 is the same as the speed υ ₁ of the toothed pulley 15. You are moving at speed.
However, during the period (the period in which only the belt portion 7B ₂ of the endless belt 7 is slack), the belt portion 7B ₂ 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 is moved. Since the belt portion up to 7B ₁ and the toothed pulley 15 is in a tension state, these belt portions are also moved at the speed υ ₂ , and the toothed pulley 1
A tensile force having a speed difference (υ ₂ −υ ₁ ) is applied to the belt portion of the endless belt 7 meshing with the belt 5. In order to eliminate this, if a one-way clutch that rotates freely is interposed between the toothed pulley 15 and the shaft 14 on the drive side, the endless belt 7 can be moved at a speed υ _2. You can
As a result, during that period, all parts of the endless belt 7 are moved at the speed υ ₂ , and the endless belt 7 can be maintained in the posture shown in FIG.

The outer peripheral surface of the rotating body 10 is a smooth surface that easily slips with the endless belt 7. For example, as shown in FIG. 8, the belt portion of the endless belt 7 facing the gate member 22 moves at a speed υ ₂ . Even if the belt portion of the endless belt 7 meshing with the toothed pulley 15 is moved at a speed υ ₁ , slipping between the endless belt 7 and the rotating body 10 causes each belt of the endless belt 7 to move. The part moves smoothly while maintaining the speeds υ ₁ and υ ₂ .

In the endless belt 7, the time when the front end of the paper sheet P is gripped between the belts 33 and 34 (shown in FIG. 6) and the time when the rear end leaves the gate member 22 (intermediate between FIGS. 10 and 11).
Up to this point, the paper sheet P is in a driven feeding posture in which the paper sheet P is driven to move. The driven feeding posture of the endless belt 7 is
Posture and the belt-shaped deformation attitude slack of the belt portion 7B ₁ is shifted to the belt portion 7B _2, sagging the slack only slack migration completion attitude migrating completed from the belt portion 7B ₁ to the belt portion 7B ₂ (belt portion 7B ₂ occurs ) And. In the case of a paper sheet 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-shaped deforming posture, and the sagging shift completion posture is not taken. This is because, in that case, the trailing end of the paper sheet is in the middle of the transition of the slack due to the paper sheets held between the belts 33 and 34 from the belt portion 7B ₁ to the belt portion 7B ₂ . This is because it will pass 22. After the trailing edge of the paper sheet is separated from the gate member 22 in this manner, the endless belt 7 returns to the driven feeding posture to the driving feeding posture (the intermediate position in FIGS. 10 and 11). To the time just before Figure 12).

When the rear end of the paper sheet P is separated from the gate member 22,
The swing block 26 supporting the gate member 22 and the guide member 23 is rotated clockwise about the shaft 25 by the force of the biasing spring 27, and the gate rollers 22A and 22A forming the gate member 22 are When it is assumed that the inner surface of the endless belt 7 is in contact with the rotating body 10, the endless belt 7 is 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, and the guide member 23 is also at the return position. The leaf P is hit and regulated. When the rollers 22A, 22A and the guide member 23 return to their original positions, the lower surface of the endless belt 7 comes into contact with the rollers 22A, 22A by elastic deformation. When the rear end of the paper sheet P separates from the gate member 22, the moving speed υ ₂ of the paper sheet P does not work on the endless belt 7, and the toothed pulley 15 moves at a speed υ by driving the shaft 14.
_{When the} toothed pulley 15 is rotated, the endless belt 7 is also swung at a speed υ ₁ by forced rotation. The belt portion 7B ₁ of the endless belt 7 includes gate rollers 22A and 22A.
The speed of endless belt 7 is υ
The banding at ₁ causes the endless belt 7 to return to its original position, so that the slack of the belt portion 7B ₂ is reduced and the belt portion 7B ₁
The belt portion 7B ₁ comes into contact with the upper surface of the uppermost paper sheet P again with an increase in the slack (shown in FIG. 11).

When the endless belt 7 is further forcibly swung by the toothed pulley 15 at the speed υ ₁ , the slack of the belt portion 7B ₂ is completely eliminated, and the endless belt 7 is brought to the driving and feeding position with respect to the next sheet P, Then, the feeding of the next paper sheet P is started (see FIG. 12). The belt portion 7B ₁ of the endless belt 7 pushes out the paper sheet P, and the paper sheet P
The tip of the gate roller 22A,
22A is pushed down and passed (13th illustration).

The feeding operation of the paper sheet P by the endless belt 7 is the first
The state shifts from the state shown in FIG. 3 to the state shown in FIG. 5, and the feeding operation of the paper sheet P is repeated in the same manner. The belts 33 and 3
At the entrance end of No. 4, the gap becomes smaller as the rear end of the paper sheet P is moved as shown in FIG.
Are spread to a predetermined gap by pushing down the gate member 22. This predetermined gap is the same as in FIG.

Then, paper dust or the like adhering to the outer surface of the endless belt 7 during the feeding of the paper sheets P is transferred to the peripheral surface of the second roll 17 that is constantly in rolling contact with the endless belt 7, and the transferred dust is transferred by the sponge roll 19. It is wiped off and collected in the dust container 18. This further secures the frictional contact between the teeth 8 of the endless belt 7 and the paper sheet P. The paper sheet P that has entered between the belts 33 and 34 has its tip shut off the sensors S ′ and S ′ during the transition from FIG. 6 to FIG. 7, and the rear end of the paper sheet P is the sensor S. The sensors S'and S'input the paper sheet passage signal to the control section C by passing through'and S '(state of FIG. 13). The paper sheet passing signals of the sensors S ′ and S ′ are used as counting signals in the control section C.

When the last paper sheet P is fed out as described above, there is no paper sheet P on the receiving table 2 and a predetermined time has elapsed after the last paper sheet P passed between the sensors S'and S '. The sensors S ', S'do not detect the paper sheet P even after the passage of time, and the sensors S', S '
The control unit C stops the motors M ₁ and M ₃ through the signal from S ′. The stop of the motor M ₁ stops the toothed pulley 15 and the endless belt 7, and the stop of the motor M ₃ stops the belts 33 and 34. When the belts 33 and 34 are stopped, the last sheet P has finished passing between the belts 33 and 34.

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. When the pedestal 2 is lowered to the first illustrated position, the motor M ₂ and the pedestal 2 are stopped. The stopping operation of the motors M ₁ and M ₃ and the motor M ₂ described above
The reverse rotation stop operation 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. Although the paper sheet processing operation is completed as described above, the reverse rotation button operation of the command unit R is performed at the end of this operation or at the start of the next processing operation. A reverse rotation command is input from the command unit R to the control unit C by this reverse rotation button operation, and the control unit C reverses the motor M ₁ for a predetermined time. If the paper sheet P does not exist on the pedestal 2, or if the paper sheet P exists on the pedestal 2 but the endless belt 7 is not in contact with the paper sheet P, the endless belt 7 The portions facing the gate rollers 22A, 22A are elastically deformed and are in contact with the gate rollers 22A, 22A. Therefore, the reverse rotation of the motor M _{1 for} a predetermined time causes the toothed pulley 15 of the band-moving imparting means 13 to band in the reverse direction, and the endless belt 7 also moves in the reverse direction (direction opposite to the arrow in FIG. 1). As a result, the gate rollers 22A, 22A are rotated 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 22A, 22A move, and a new portion faces the endless belt 7 to control the gate action.

By this action, the gate rollers 22A, 22A can be rotationally displaced through the endless belt 7 by using the band movement imparting means 13 for the endless belt 7 without manually rotating the gate rollers 22A, 22A. Therefore, the peripheral surfaces of the gate rollers 22A, 22A are evenly used, and it is possible to prevent uneven wear in which a part is locally worn.

The reverse rotation command of the motor M ₁ may be issued by 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 22A and 22A, the lower surface of the endless belt 7 comes into contact with the rollers 22A and 22A 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 22A, 22A, the endless end is formed. The lower surface of the belt 7 may first be brought into contact with 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 22A, 22A is carried out by utilizing the belt movement in the reverse direction of the endless belt 7. When the endless belt 7 is not in contact with the paper sheets, the outer surface of the endless belt 7 contacts the gate member. Is required. However, this contact state means a state at the time of ending or before the start of the paper sheet processing operation, and during the paper sheet feeding operation, the contact (contact between the gate rollers 22A, 22A and the endless belt 7) is not always required. Needless to say,) is not a necessary condition.

FIG. 14 shows a situation in which thin paper sheets, such as postcards and slips, are collected and delivered instead of being thick as in a postal letter, and in this case, especially with the outer peripheral surface of the endless belt 7. It is an example of feeding operation of paper sheets that can pass through a gate gap formed by the gate rollers 22A and 22A. In this case, the gate rollers 22A, 22A and the guide member 23 can perform the feeding operation with the position fixed, and the feeding operation of the endless belt 7 has substantially the same operation as described above.
Sheets can be fed out sheet by sheet. The outer surface of the endless belt 7 in this embodiment has grooves 7A and 7A.
The gate roller 22 is made to face the surfaces 7A ₁ and 7A ₁ of 7A.
A and 22A face each other, but the configuration is not limited to this example, and the endless belt 7 having only the outer surface having the teeth 8 may be used. Further, the gate rollers 22A and 22A may be made to face this outer surface. And the gate roller 22
In this embodiment, two A and 22A are provided, but one may be provided, and in this case, it is preferable to use a roller that is long in the roller axial direction. When the endless belt 7 is in pressure contact with the rotating body 10, there is a predetermined gap between the lower surface of the endless belt 7 and the gate rollers 22A, 22A, but when the endless belt 7 is swung in the forward direction, the gate is moved. Roller 22
This is to prevent A and 22A from giving a strong frictional resistance force to the endless belt 7, and it is not necessary to provide a gap between the gate rollers 22A and 22A and the endless belt 7 depending on the usage form.

Further, although the endless belt 7 is a single belt, a plurality of endless belts may be arranged side by side in the width direction, and even in such a case, all the belts can be synchronously swung by the toothed pulley 15. Furthermore, in this embodiment, the stack of stacked paper sheets is vertically stacked, the endless belt 7 is exposed at a fixed height position above the stack, and the stack of stacked paper sheets placed on the pedestal 2 is attached to the endless belt 7. This is an example in which the sheet is lifted and pressed and fed out from the upper side, but the present invention is not limited to this example, and the endless belt 7 is exposed to the lower side of the stack of stacked paper sheets in the vertical direction. It is also possible to feed the paper sheets from the bottom. The stack of stacked paper sheets may not be stacked vertically but may be aligned and stacked in the lateral direction, and the endless belt 7 may be exposed to the frontmost position of the stack of stacked sheets. 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 moving the pedestal 2 of this embodiment in the horizontal direction, this pedestal is moved. 2 may be a pressing plate. Needless to say, the movement of the pressing plate may be moved by a tension spring urging the endless belt 7 side instead of the movement by the motor.

In this embodiment, the toothed pulley 15 constituting the band movement imparting means 13 is shown as being directly connected to the shaft 14.
The motor M ₁ may be rotationally driven to the toothed pulley 15 via a drive transmission system such as a transmission gear and a drive transmission pulley.

Further, in this embodiment, the conveying means is pulleys 35, 36, 4
Although it is composed of 0, 41 and belts 33, 34, it may be a group of rollers or a combination of both. Further, although a reversible motor is used as the motor M ₁ which constitutes the band motion imparting means of the present embodiment, a motor that rotates only in the forward rotation direction is used, and a motor transmission system from the motor M ₁ to the shaft 11 is used. It is also possible to provide a forward / reverse rotation transmission switching clutch so that the forward rotation from the motor M ₁ is converted into the reverse rotation by the clutch and transmitted to the shaft 14 when a command is issued from the reverse rotation direction pulsation command section. When the paper sheet is fed, the forward rotation of the motor M ₁ is transmitted to the forward rotation shaft 14 by the clutch.

Further, in the present embodiment, the paper sheet feeding device is capable of processing the paper sheets having different thicknesses and lengths in the feeding direction. However, depending on the purpose of use, there are differences in the thickness, but the length in the feeding direction is constant for each type of paper processing, or the length in the feeding direction is large and small, but the thickness is constant for each type. Needless to say, each of them can be used for a certain paper sheet processing.

In the present embodiment, the pedestal 2 is raised when the lever 20 comes off the trailing end of the fed paper sheet (FIGS. 8 to 9). At that time, the endless belt 7 is in a posture in which the endless belt 7 comes into contact with the sheet to be fed out, particularly in a driven feeding position, and does not come into contact with a sheet to be fed next after being raised by the pedestal 2 and returns to the return position. Time (11th
(FIG. 11), the contact is made for the first time, and from that point (FIG. 11) to FIG. 12, the endless belt 7 takes the optimum drive-feeding posture for feeding. This example, in which the pedestal 2 is raised every time one sheet of paper is fed out, is the case of thick letter sheets.
In the case of thin letter sheets as shown in FIG. 4, for example, the sensor S is switched by the lever 20 every time about 30 sheets are reduced, and the pedestal 2 is raised each time.

In this example, the pedestal 2 is used when the endless belt 7 is in the driven feeding position.
However, the endless belt 7 may be in the returning posture (for example, when returning from the driven feeding posture to the driving feeding posture) by changing the installation position of the lever 20, 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.

The detection means for detecting the positional state of the frontmost paper sheet in the paper sheet group is composed of the lever 20 and the sensor S in this example, but may be a light emitting / receiving sensor. To be more specific, for thick letter sheets, the position of the frontmost paper sheet to several sheets following it, and for thin letter sheets, the position of the frontmost paper sheet to about 30 sheets following it The light emitting / receiving sensor is provided, and the light receiving sensor receives the light shielded by the paper sheets due to the reduction of the paper sheets, so that the pedestal 2 can be moved.

In addition, a sensor for detecting a specific portion of the endless belt 7 at a predetermined time (for example, when the drive feeding posture is provided) is provided.
It is also possible to move the pedestal 2 by detecting a change in posture and a change accompanying a reduction amount of paper sheets. Further, in FIG. 4 of the present example, a pressure plate that comes into contact with the top surface of the uppermost paper sheet and restricts the rise of the paper sheet group is provided, and the pressure for detecting the pressing force of the pedestal 2 against the paper sheet group restriction plate A detector may be provided to stop the rise of the pedestal 2 when the pressure detector detects a predetermined pressure when the pedestal 2 is raised. Therefore, the configuration is not limited to the lever 20 and the sensor S as described above.

[Effect of device]

An endless belt that feeds out the paper sheets by bringing the outer surface into contact with the frontmost paper sheet surface of the accumulated paper sheet group in a partially deformable state and forcing the paper sheets by the band movement imparting means, A posture holding means for holding a predetermined portion of the endless belt and holding the belt in a driving and feeding posture, an outer surface of the endless belt and a gate member, and only one sheet fed out by the endless belt A gate portion that allows the sheet to pass therethrough and that follows the sheet is regulated, and a sheet that is driven at a speed higher than the banding speed of the endless belt and that sandwiches and conveys the sheet that passes through the gate portion. A conveying means for deforming the endless belt through the paper sheets from the driving and feeding posture to the driven and feeding posture, and after the endless belt is transformed from the driving and feeding posture to the driven and feeding posture, the driving belt again returns to the driving and feeding posture. In the feeding device that feeds the paper sheets intermittently one by one by returning, the endless belt is composed of a toothed belt having a toothed surface with teeth formed at a constant pitch on the outer surface of the belt. The motion imparting means includes a toothed pulley that meshes with the teeth on the outer surface of the endless belt, and the attitude maintaining means includes a rotating body facing the gate member and provided in the endless belt, and in the endless belt and integrated. First provided at a position facing the paper sheet group
A roll, and the toothed pulley and the second roll are arranged so as to sandwich the endless belt with the first roll, and the endless belt is forcedly rotated by the forced rotation of the toothed pulley. Since there is no slip between the endless belt and the band-moving imparting means for imparting rotation to the endless belt, there is no decrease in the paper sheet feeding ability, and the outer surface of the endless belt becomes a toothed surface. Since the protrusions are arranged in the leaf feeding direction, slip between the outer surface of the endless belt and the paper sheet surface is reduced, and the paper sheet is reliably fed out. Combined with the fact that there is no slip between the endless belt and the endless belt, the feeding ability of the paper sheets can be greatly improved. Further, the reduction of the slip can reduce the generation of belt powder, paper powder, and dust, and can prolong the service life of the endless belt, and also have a great effect on the health maintenance of the machine operator.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention before being fed out, FIG. 2 is a right side view of the same, FIG. 3 is a perspective view of an endless belt in FIG. 1, and FIGS. FIG. 14 is an explanatory diagram of the feeding process, FIG. 14 is an illustration diagram when feeding thin paper sheets, and FIG. 15 is a control block diagram. DESCRIPTION OF SYMBOLS 1 ... Paper sheet accumulation part, 7 ... Endless belt, 8 ... Teeth, 10 ... Rotating body which comprises a posture holding means, 12 ... 1st roll, 13
... band-moving imparting means, 15 ... toothed pulleys constituting the band-moving imparting means, 16 ... teeth, 17 ... second roll, 32 ... conveying mechanism as conveying means, 22 ... between outer surface of endless belt (7) 22A, 22A for forming a gate portion in the
... gate roller, 24 ... first supporting means, 26 ... swing block, 44 ... second supporting means, 46 ... arm, 50 ...
Interlocking mechanism, M ₁ ... Motor that constitutes the band-giving means, p ...
Paper sheet, R ... Command unit as a reverse direction band motion command unit.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-59-78016 (JP, A) Actually opened 55-147316 (JP, U) Actually opened 61-128236 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A paper sheet is repeated by bringing a part of the paper sheet into a freely deformable state, the outer surface of which is brought into contact with the frontmost paper sheet surface of the stack of paper sheets, and is forcibly swung by a swath imparting means. An endless belt to be taken out, and a posture holding means for holding a predetermined portion of the endless belt to hold the belt in a driving and feeding posture,
A gate portion configured by the outer surface of the endless belt and a gate member, which allows only one sheet fed out by the endless belt to pass through and regulates the feeding out of the sheet following the endless belt, and a belt of the endless belt. And a conveying unit that is driven at a speed higher than the moving speed, holds and conveys the paper sheets that pass through the gate unit, and transforms the endless belt from the drive feeding posture to the driven feeding posture through the paper sheets. In a feeding device that intermittently feeds the paper sheets one by one 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 endless belt is composed of a toothed belt having a toothed surface with teeth formed at a constant pitch on its outer surface,
The banding imparting means includes a toothed pulley that meshes with the teeth on the outer surface of the endless belt, and the attitude maintaining means includes a rotating body facing the gate member and provided in the endless belt, and in the endless belt and integrated. A first roll provided at a position facing the sheet group, and the toothed pulley and the second roll so as to hold the endless belt between the first roll and the first roll.
A sheet feeding device, characterized in that a roll is provided, and the endless belt is forcibly rotated by the forced rotation of the toothed pulley.