JPH0419145B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a paper sheet take-out device that sequentially takes out stacked paper sheets such as banknotes, checks, and slips one by one.

[Technical background of the invention and its problems]

Generally, a take-out device that takes out and supplies paper sheets such as banknotes and checks one by one is a back-up unit that can move paper sheets stored in a stacking room in an upright position along the stacking direction of the paper sheets. The sheet is pressed in a predetermined direction by a roller, and a pair of left and right take-out rollers provided in the direction of the press take out one sheet at a time, starting from the endmost sheet.

On the other hand, for example, a banknote counting machine that inspects and counts banknotes is configured to set approximately 1000 banknotes at once in a stacking chamber.

However, in conventional paper sheet take-out devices of this type, the back-up body for pressing the paper sheets in the stacking chamber can only slide toward the take-out roller side, and the angle of the pressing surface of the back-up body is fixed. It has a structure that prevents it from swinging.

For this reason, when a group of folded or curved paper sheets such as banknotes is accumulated, the paper sheets cannot be brought into uniform contact with the take-out roller, which may cause failure to take out or skewed take-out. There is a problem.

[Purpose of the invention]

The present invention has been made based on the above-mentioned circumstances, and its object is to be able to press uniform pressure against a take-out means such as a take-out roller even when a group of paper sheets with folds or bends is accumulated. It is an object of the present invention to provide a paper sheet take-out device that allows reliable take-out operations.

[Summary of the invention]

In order to achieve such an object, the present invention presses a group of paper sheets stored in a stacking chamber in both directions via a backup body, and uses a take-out means provided in the pressing direction to remove the paper sheets at the end of the stacking chamber. In the paper sheet take-out device which takes out sheets one after another, the back-up body has a plate-like pressing surface and is configured to be able to swing back and forth and left and right.

[Embodiments of the invention]

Hereinafter, the present invention will be described with reference to an embodiment shown in the drawings. Figures 1 and 2 are a side view and a partially cutaway front view of the entire extraction device, and Figures 3 and 4 are a partially cutaway rear and side view of the extraction device. be. Reference numeral 1 in the figure is a stacking table forming the bottom of the stacking chamber 2. On this stacking table 1, that is, in the stacking chamber 2, a large number of sheets (approximately 1,000 sheets) of stacked paper sheets P... can be collected and stored at once. It is designed to be stored in a standing position.

In addition, a group of paper sheets P stored in the accumulation room 2...
is pushed toward the left in FIG. 1 by a back-up mechanism 3, which will be described later, so that the frontmost paper sheet P (the left end in FIG. 1) passes through the notch 5 formed in the front guide plate 4 to the peripheral edge A portion of the rollers 6a, 6b project into the accumulation chamber 2, and take-out rollers 7a, 7b, 7c serving as take-out bodies come into contact with the feed rollers 6a, 6b.

As shown in FIG. 3, the take-out rollers 7a, 7b, 7c and the feed rollers 6a, 6b are drive rollers for take-out rollers that are rotatably suspended horizontally via bearings 9 attached to side bases 8a, 8b. It is attached to the shaft 10 and the feed roller drive shaft 11. In addition, the feed rollers 6a, 6b
are attached to both sides of the central take-out roller 7b so that their outer peripheries overlap.

Further, one end of the drive shaft 10 for the take-out roller is connected to the output part of the clutch mechanism 12, and the ON/OFF operation of the clutch mechanism 12 causes the rotation of the gear 13 driven via a drive system (not shown). ,
The drive shaft 10 for the take-out roller rotates or stops.

A gear 16 is attached to the other end of the take-out roller drive shaft 10 and is interlocked with a gear 14 attached to the feed roller drive shaft 11 via an intermediate gear 15, and the take-out rollers 7a, 7b, 7c. The feed rollers 6a and 6b simultaneously rotate in the same direction (clockwise in FIG. 1).

On the other hand, take-out rollers 7a and 7c located on the outside
Gate rollers (gear rollers) 17a and 17b as gate members for preventing the taking out of a predetermined number or more of paper sheets P are provided opposite to the paper sheets P. These gate rollers 17a, 17b are attached to the arm shaft 1 which is horizontally suspended via side bases 8a, 8b.
The gate roller support shaft 20 is normally fixed in a non-rotatable state with respect to a gate roller support shaft 20 whose intermediate portion is held by the free end side of an arm 19 pivotally connected to the gate roller 8 .

Further, the positions of these gate rollers 17a and 17b are adjusted by a gate member position adjustment mechanism 21, which will be described later, so that the gap between them and the take-out rollers 7a and 7c becomes an arbitrary value, that is, the value for one sheet of paper. I am learning how to do it.

Further, lower guide plates 2 are provided at both ends of the gate roller support shaft 20 to support the lower surfaces of both ends of the paper sheets P taken out by the take-out rollers 7a, 7b, and 7c.
2, 22 are attached, and the upper guide plate 23, 2 consists of a tongue piece integrally formed on the lower end of the front guide plate 4.
3 and facing each other with a predetermined distance therebetween.

Furthermore, as shown in FIG. 3, four guide plates 24a, 24b, 24 whose upper ends are arc-shaped guide end surfaces are arranged near the lower part of the central take-out roller 7b.
c, 24d are arranged.

These guide plates 24a, 24b, 24c, 24
Guide plates 24a and 24d located on the inside and outside of d
As shown in FIG. 4, one end is rotatably supported by a gate roller support shaft 20 held at the free end of the arm 19, and springs 25, 25 are supported.
is constantly biased clockwise in FIG.
A pinch roller 26a attached to the free end side of the pinch roller 26a,
26a is adapted to roll into contact with the lower end side of the outer take-out rollers 7a, 7c. Moreover, the guide plates 24b and 24c located inside are shown in FIGS. 3 and 4.
Holder 2 attached to arm 19 as shown in the figure
Pinch rollers 26b, 26b are mounted on the free ends of the pinch rollers 26b, 26b, which are pivotally supported by the shafts 28, 28, and are always urged counterclockwise in FIG. 4 by springs 29, 29. The roller 7b is adapted to come into rolling contact with the lower end surface of the take-out roller 7b.

Then, the rollers 7a and 7 are taken out from the accumulation chamber 2.
The paper sheet P taken out downward by the frictional force of the gate rollers 17a and 7c passes through the gap for one paper sheet formed between the gate rollers 17a and 17b, and its both ends are passed through the lower guide plate 22. , 22 and the upper guide plates 23, 23, the middle part is connected to four guide plates 24a to 24a.
24d. At this time, paper sheets P
are pinch rollers 26a, 26a and 26b, 2
6b presses the rollers 7a, 7b, and 7c so that they come into close contact with the circumferential surfaces of the rollers 7a, 7b, and 7c to ensure reliable extraction. As shown in FIGS. 1 and 4, the paper sheets P taken out in this way are fed into a conveyance path 32 formed by the mutually opposing surfaces of the conveyor belts 30 and 31, and then transported to a feeding section (not shown).
It is now being transported to

On the other hand, as shown in FIG. 3 and FIG.
A paper sheet presence/absence detection switch 34 consisting of a micro switch is attached through the holder 33, and a detection lever 36 is rotatable via a support shaft 35 attached to the support piece of the holder 33 and is supported by a spring (not shown). In FIG. 4, it is always biased counterclockwise. The free end (lower end) of this detection lever 36 projects into the accumulation chamber 2 through a notch 5 formed in the front guide plate 4. When there are paper sheets P in the stacking chamber 2, the detection lever 36 is activated by the frontmost paper sheet P.
When the tip of the paper sheet is pushed, the actuator 34a of the sheet presence/absence detection switch 34 is pushed by being rotated clockwise in FIG. On the other hand, a notch is formed in the part of the backup body 37 of the backup mechanism 3 that corresponds to the tip of the detection lever 36, and when there is no paper sheet P in the stacking chamber 2, the tip of the detection lever 36 enters the notch, and the backup body 37 moves to the forward position (fourth position).
The configuration is such that the actuator 34a of the detection switch 34 is not pressed even when the position shown in the figure is reached.

The backup mechanism 3 also includes a backup 37 arranged in the accumulation chamber 2 and a support mechanism 38 that supports the backup body 37 in a reciprocating manner.
and a biasing mechanism 39 that always biases the backup body 37 toward the forward position.

The support mechanism 38 has a movable member 40 to which the backup body 37 is attached.
is attached to a guide shaft 42 via a slide bearing 41 attached to one end, and by rolling a guide roller 43 attached to the lower surface of the other end to the bottom surface of the accumulation chamber 2, paper sheets in the accumulation chamber 2 are moved. It is configured to be able to freely reciprocate along the stacking direction of the group P.... The guide shaft 42 is the side base 8
Both ends thereof are held by shaft holders 44, 44 (only one shown) attached to a.

Further, the biasing mechanism 39 has the following configuration. That is, a spring hook 45 is protruded from the upper surface of one end of the movable member 40, and one end of a carrier spring (tension spring) 46 is hooked thereto. The carrier spring 46 is shown in FIGS.
As shown in FIG.
A guide roller 4 provided on the forward position side of
7 and bent, the other end is hooked to a spring hook 48 provided on the backward position side. Note that the support shaft 49 that supports the guide roller 47 and the spring retainer 4
8 is attached to the side base 8b. Thus, the backup body 37 attached to the movable member 40 is always urged toward the forward position by the restoring force of the carrier spring 46, and the group of paper sheets P in the stacking chamber 2 is applied with a pressing force suitable for taking out. It's starting to feel like pressure.

In addition, band-shaped guide plates 50, 50 made of a low-friction material are attached to the bottom of the stacking chamber 2, and support the lower end surfaces of the paper sheets P so that they move smoothly. There is.

Further, as shown in FIGS. 3 and 4, each of the feed rollers 6a and 6b is coated with a friction material 5 such as rubber over the entire circumferential surface of a metal roller body 51.
2, and a plurality of grooves are formed on the circumferential surface of the friction material 52 along the rotation direction.

Further, as shown in FIGS. 3 and 4, the take-out rollers 7a, 7b, and 7c are each provided with a notch in a part (approximately 100 degrees) of the peripheral surface of a metal roller body 53, and a friction material 54 such as rubber is formed. A groove is formed in the circumferential surface of the friction material 54 in a direction perpendicular to the rotation direction, and the circumferential surface further includes a low-friction portion 53a formed from the circumferential surface of the roller body 53.
It is now slightly more prominent.

Further, as shown in FIGS. 3 and 4, the gate rollers 17a and 17b each have a friction material 5 such as rubber over the entire circumference of a metal roller body 55.
6 is printed on it. The friction material 56 of these gate rollers 17a, 17b has a smaller coefficient of friction than the friction material 54 of the take-out rollers 7a, 7b, 7c. The operation is now intact.

Further, as shown in FIGS. 2, 3, and 5, the gate rollers 17a, 17b have two protrusions 57, 57 over the entire circumference thereof, respectively. At the same time, there is a take-out roller 7 facing these gate rollers 17a and 17b.
Grooves 58, 58 are formed on the outer circumferential surfaces of a, 7c, facing the protrusions 57, 57. Then, by generating a waveform in a part of the paper sheet P to be taken out by the frictional force of the take-out rollers 7a, 7b, and 7c as shown in FIG. 5A, the sheet P is taken out as shown in FIG. 5B. A gap is created between the second paper sheet P and the second paper sheet P to reduce surface pressure and to prevent overlapping.

Further, the gate rollers 17a, 17b are the sixth gate rollers 17a, 17b.
As shown in the figure, each is attached to the gate roller support shaft 20 via a torque limiter 59, and although it is normally stopped, it rotates when extremely excessive force is applied, so that it does not damage the paper sheets P. It's becoming like that. Torque limiter 59 support shaft 20
A first hub 60 fitted to the first hub 60, a second hub 61 fitted to the outside of the first hub 60, and a sliding surface 60a consisting of mutually opposing surfaces of the flanges of these hubs 60 and 61, The structure includes a spring 62 that presses the spring 61a. And the second hub 61
When an unreasonable force is applied to the gate rollers 17a and 17b fitted on the outside of the gate, the friction pressure between the sliding surfaces 60a and 61a due to the pressure of the spring 62 becomes greater and slippage occurs between the sliding surfaces 60a and 61a, causing the gate to slide. Rollers 17a and 17b are adapted to rotate.

Further, the gate member position adjustment mechanism 21
Gate roller 17 as shown in FIG.
A link mechanism 63 that holds a, 17b movably in the direction of approaching and separating from the take-out rollers 7a, 7c.
The gate rollers 17a, 17b and the take-out rollers 7a, 7 held by this link mechanism 63
The structure includes a link fixing means 64 for fixing the link so that the gap between the link and the link c becomes an arbitrary value. That is, a holder 66 is attached to the middle part of the lower support rod 65 that supports the side bases 8a, 8b, and a support shaft 67 is horizontally suspended in parallel to the gate roller support shaft 20. The lower end of the lower link 68 is connected to the holder 66 by the support shaft 67, and the upper end of the lower link 68 is connected to the lower end of the upper link 70 via a connecting pin 69. ing. Also, above link 70
The upper end of the gate roller is connected to a support shaft 20 for the gate roller. A link mechanism 63 consisting of an arm 19, an upper link 70, and a lower link 68
This allows the gate rollers 17a, 17b to be held in a state where they can approach and separate from the take-out rollers 7a, 7c.

In addition, one end of the lower link 68 is attached to the lower support rod 65.
One end of the spring 72 is hooked to the spring hook 71 attached to the spring hook 7, and the other end of the spring 72 is attached to the spring hook 7
3, and the lower link 68 is always urged counterclockwise about the support shaft 67 in the state shown in FIG. 4. and,
The lower link 68 and the upper link 70 are constantly biased to be close to a straight line, and the gate rollers 17a, 17b
is adapted to push up the free end of the arm 19 in the direction toward the take-out rollers 7a, 7c.

Further, an adjustment screw 74 serving as a link support is screwed into the lower link 68, and its tip is brought into pressure contact with the holder 66, so that the lower link 68 can be adjusted to a predetermined position against the biasing force of the spring 72. It has a structure that allows it to be supported in position. When this adjustment screw 74 is tightened, the lower link 68 is rotated clockwise about the support shaft 67 against the urging force of the spring 72, and the degree of bending of the upper and lower links 70, 68 increases. As a result, the straight distance between the support shaft 67 and the gate roller support shaft 20 becomes shorter. Then, the arm 19 is rotated clockwise in FIG. 4 about the arm shaft 18 by that amount, and the gate rollers 17a, 17b are separated from the take-out rollers 7a, 7c. Conversely, when the adjustment screw 74 is turned in the direction of removal, the degree of bending of the upper and lower links 70, 68 about the connecting pin 69 becomes smaller, and the support shaft 6
7 and the gate roller support shaft 20 becomes longer, and the arm 19 becomes closer to the arm shaft 18.
The gate rollers 17a and 17b rotate counterclockwise in FIG.
a, 7c.

Therefore, by simply turning the adjusting screw 74 in a predetermined direction, the gap between the gate rollers 17a, 17b and the take-out rollers 7a, 7c can be set to an arbitrary value.

Note that the knob 74a of the adjustment screw 74 also serves as a release knob for separating the gate rollers 17a, 17b from the take-out rollers 7a, 7c, and by pulling the knob 74a against the biasing force of the spring 72, The degree of bending of the links 70, 68 can be increased.

The arm 19 and the lower link 72 are connected by springs 75, 75, as shown in FIGS. 2 and 4, to prevent the link mechanism 63 from rattling.

Therefore, the group of paper sheets P... stored in the stacking chamber 2 in an upright position is transported by the carrier spring 4.
The paper sheets P at the front end are pushed in both directions by the back-up body 37 which is urged toward the forward position side by the restoring force of 6, and the paper sheets P at the front end are sent to the stacking chamber through the notch 5 formed in the front guide plate 4. The rollers are pressed against the peripheral surfaces of feed rollers 6a, 6b and take-out rollers 7a, 7b, 7c, both of which have their peripheral edges partially protruding into the inside of the rollers 2, with a contact pressure suitable for take-out. At this time, the tip of the detection lever 36 is pushed by the paper sheet P and rotates against the biasing force of a spring (not shown), so that the actuator 34 of the paper sheet presence detection switch 34
Press a to detect "presence".

On the other hand, a drive source (not shown) is started by a "presence" signal from the paper sheet presence/absence detector 34 or a starting signal from a start switch (not shown), and the gear 13 rotates and the taken out paper sheet P is conveyed. The conveyor belts 30 and 31 forming the conveyor path 32 start running.

Next, when the take-out signal is input, the clutch mechanism 12 enters the "on" state, and the driving force of the gear 13 is transmitted to the take-out roller support shaft 10, and the take-out roller support shaft 10 and the gear group 16 ，
The feed roller support shafts 11, which are interlocked via 15 and 14, rotate at the same time. Therefore, the feed rollers 6a, 6b and the take-out rollers 7a, 7 attached to these support shafts 10, 11
b and 7c start rotating at the same time. Then, the front edge of the front edge of the paper sheet P at the forefront is brought to the take-out rollers 7a, 7 by the frictional force of the feed rollers 6a, 6b.
b, 7c so as to surely face them. Next, the frictional material 54 provided on a part of the circumferential surface of the take-out rollers 7a, 7b, 7c slides against the front surface of the lower end of the foremost paper sheet P, thereby applying the frictional force. Then, the paper sheet P at the forefront is taken out.

In this way, the take-out rollers 7a, 7b, 7c
The paper sheet P at the forefront, which is fed out by the frictional force of
Take-out rollers 7a, 7b, 7 by a, 26a
It is carried out in close contact with side c and is guided at both ends by the upper and lower guide plates 23, 22 and by the arcuate guide end faces of the guide plates 24a to 24d, and sent between the conveyor belts 30, 31. It will be.

On the other hand, the paper sheet P at the forefront to be taken out has protrusions 57, 57 formed on the circumferential surfaces of the gate rollers 17a, 17b, respectively, grooves 58 formed on the circumferential surfaces of the take-out rollers 7a, 7c, respectively. 58, a part of the paper sheet P becomes wave-shaped, and as described above with reference to FIG. The paper sheets P are prevented from passing by gate rollers 17a and 17b, which are arranged opposite to each other with a gap for one sheet between them and the take-out rollers 7a and 7c.
Therefore, the paper sheets P in the stacking chamber 2 are taken out one by one, with the frontmost one being taken out one by one every rotation of the take-out rollers 7a, 7b, and 7c, and about 10 sheets are taken out every second. .

When all the paper sheets P in the stacking chamber 2 are taken out, the paper sheet presence/absence detector 34 detects "absence" and the rotation of the take-out rollers 7a, 7b, 7c and the feed rollers 6a, 6b is stopped. , the ejecting operation ends.

Next, the aforementioned backup mechanism 3 will be explained in detail with reference to FIGS. 7 to 14. As shown in FIGS. 7 and 8, a holder 76 made of a band-shaped plate bent into a U-shape is spot-welded to the center of the back surface of the backup body 37.
The upper and lower horizontal pieces 76a and 76b of 6 are the upper and lower horizontal pieces 40 of the movable member 40, which are reciprocatably supported by the slide bearing 41 and guide roller 43 attached to the guide shaft 42, as described above.
a and 40b, and these are connected via a shaft 77 that is perpendicular to the surface that supports the lower end surface of the paper sheet group P in the stacking chamber 2. As shown in FIG. 9, the backup body 37 moves around the axis of the shaft 77 (arrow A,
It has a structure that allows it to swing freely in the B direction.

At this time, the swing range of the backup body 37 is restricted by the contact between the side end surface of the upper horizontal piece 40a of the movable member 40 and the back surface of the backup body 37 (at the location indicated by arrow C). As shown in FIG. 8, the amount of rocking displacement is determined by setting the dimension l between these mutually facing surfaces to an appropriate value.

Further, as shown in FIG. 10, the shaft insertion hole 78 formed in the upper horizontal piece 76a of the holder 76 is inserted into the elongated hole, and as shown in FIG.
The shaft insertion hole 79 bored in the lower horizontal piece 76b of 6 is a perfect circular hole. Therefore, the lower horizontal piece 76b is the lower horizontal piece 40 of the movable member 40.
Due to the play between the shaft insertion hole 78 and the shaft 77, which is supported by
As shown by arrows D and E in FIGS. 2 and 13, the structure is such that it can also swing in a direction perpendicular to the direction around the axis of the shaft 77.

However, if the paper sheet P has a strong crease and the paper sheet P does not contact the feed rollers 6a, 6b and the take-out rollers 7a, 7b, 7c in parallel, the back-up body 37 Class P...
As shown in FIG.
6b and take-out rollers 7a, 7b, and 7c with uniform pressure. As a result, a uniform frictional force is applied to the paper sheet P when the take-out rollers 7a, 7b, and 7c take it out, so that one sheet can be taken out reliably without skew or taking-out failure.

Note that the swinging of the shaft 77 of the back-up body 37 around the axis (left and right swinging) is caused by the movable member 40.
The side end surface of the upper horizontal piece 40a and the backup body 3
Due to the contact with the back surface of the back-up body 37, the swinging of the back-up body 37 in the direction perpendicular to the direction around the axis of the shaft 77 (oscillation back and forth) is caused by the shaft insertion hole 78.
Each is regulated by the range of the long hole of
The backup function will not be impaired.

Note that the present invention is not limited to the above embodiments.
In other words, as a means of swinging the back-up body, it is possible to use a member that allows free swinging, such as a flexible link or rubber material at the fulcrum, and the advantage is that the structure is simple but the performance is stable. can get.

In addition, it goes without saying that the present invention can be modified in various ways without departing from the gist of the invention.

〔Effect of the invention〕

As explained above, the present invention has a structure in which the back-up body has a plate-shaped pressing surface and can swing back and forth and left and right, so that it is possible to accumulate paper sheets having folds and bends. Even when the paper sheet is in contact with the group of paper sheets, the contact state of the back-up body with the group of paper sheets is stable, and it can be pressed against the take-out means such as a take-out roller with uniform pressure.
The effect is that reliable ejecting can be performed without causing skew or ejecting failure.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a partially cutaway front view, FIG. 3 is a partially cutaway rear view, and FIG. 4 is a partially cutaway front view. A partially cutaway side view, Figure 5A is an explanatory diagram showing the state of the paper sheets to be taken out passing through the gate roller section, and Figure 5B is the paper sheets to be taken out and the second sheet. FIG. 6 is a sectional view showing how the gate roller is attached to the gate roller support shaft, FIG. 7 is a partially cutaway plan view showing how the main part of the backup body is attached, and FIG. FIG. 8 is a side view, and FIG. 9 is an explanatory diagram showing the swinging state of the back-up body in the left-right direction.
FIGS. 10 and 11 are views showing how the shaft insertion hole of the holder is formed, and FIGS. 12 and 13 are
The figure is an explanatory view showing the swinging state of the back-up body in the front-rear direction, and FIG. 14 is an explanatory view showing the back-up state. 2...Accumulation room, P...Paper sheets, 7a-7c...
Take-out body (take-out roller), 37... Backup body, 76... Holder, 7... Shaft, 78,
79...Shaft insertion hole.

Claims (1)

[Scope of Claims] 1. A group of paper sheets stored in the stacking chamber is pressed in the plane direction through a backup body, and the paper sheets at the end of the stacking chamber are sequentially taken out by a take-out means provided in the pressing direction. In the paper sheet take-out device, the back-up body has a plate-shaped pressing surface,
A paper sheet retrieval device characterized in that the device is configured to be able to swing back and forth and left and right.