JPH0218029Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a machine used for conveying paper such as cards, postcards, slips, paper scraps, checks, bills, etc., or a means for feeding paper from a paper stacking section. It is used for machines etc. that separate paper sheets one by one and feed them. The present invention relates to a conveyed paper sheet skew correction device for correcting the skew of sheets (including sheets whose leading ends have passed through a feed-out gate section but whose rear end portions are still in a stacking section).

[Prior art and its problems] Conventionally, this type of skew correction for conveyed paper sheets electrically detects the skew of the conveyed paper sheets, and adjusts the correction in the conveying width direction based on the skewed state at the time of skew detection. The skew is corrected by changing the clamping pressure of a plurality of clamping and conveying roller groups.

By the way, the conventional skew correction means described above requires a complicated detection means to electrically detect the skew of paper sheets, and also changes the clamping pressure of the clamping and conveying roller group depending on the state at the time of detection. This is extremely complex and expensive in terms of structure and control.
Moreover, when paper sheets are conveyed one after another at high speed, the followability thereof is poor, and there is a drawback that the method cannot be adapted to high-speed processing.

Taking the case of a banknote deposit machine as an example, the loaded banknotes are separated one by one by a feeding means from a group of deposited banknotes, and are conveyed. However, if the paper to be sent to the discriminator is skewed, the discriminator will not be able to properly identify it, and it will be treated as unidentifiable paper, causing the machine user (trying to make a deposit) This is undesirable as it means that the item will be returned to the person responsible for purchasing the item.

On the other hand, in the case of paper dispensing machines, the dispensing papers are arranged and stacked and then released all at once to the user, but if skewed papers are mixed together, it is easy to cause a stacking failure. Subsequent paper waste may become jammed in the stacking section and the transport path. Therefore, in order to apply the above-mentioned conventional skew correction means to a paper input/dispensing machine, it is difficult to apply it to an arbitrary location because it is unsuitable for high-speed processing and is complicated and large in terms of structure and control. It is difficult to adopt the system because it cannot be installed in the area.

[Purpose of invention]

The present invention focuses on the above-mentioned drawbacks of the prior art, and has been developed with the aim of improving them.The present invention aims to correct the skew of conveyed paper sheets without requiring any electrical skew detection means. An object of the present invention is to provide a skew correction device for conveyed paper sheets.

[Summary of the idea]

In order to achieve the above purpose, the orthodontic device of the present invention:
A rotating shaft is rotatably supported on the machine frame perpendicular to the conveying direction of the conveying path for conveying paper sheets, and a rotary shaft fixed to this rotating shaft and arranged in the width direction of the conveying path, It is equipped with at least two regulating pieces whose leading edges abut, and a biasing means for biasing these regulating pieces in a direction to maintain a state intersecting the conveyance path, and this biasing means When the leading edge of a conveyed sheet comes into contact with a piece, the leading edge is stopped and the skewed posture of the conveyed sheet is corrected. It is characterized by having a biasing force that can cause each regulating piece to retreat to one side of the conveying surface by the conveying force of the leaves.

[Example of idea]

Hereinafter, the present invention will be described with reference to embodiments shown in the drawings.

FIG. 1 shows an example of a conveyance path 1 to which the present invention is applied, and FIG. 2 shows a side view when the conveyance path 1 is applied to a portion that conveys sheets fed out one by one from a sheet stacking section 2. , and FIG. 3 shows the same plane.

The conveyance path 1 shown in the figure has a belt structure, and shafts 4, 5, 6, and 7 are supported between machine frames 3 and 3 in upper and lower pairs in the front and rear of the conveyance direction, and pulleys 8 are symmetrically mounted on the shafts 4, 5, 6, and 7, respectively. ,8,9,9,10,10,1
1 and 11 are provided, and a belt 12 consisting of two belts is wound between the front and rear pulleys.
A rotational force in the direction of the arrow is applied to at least one of the shafts 4 to 7 from a drive motor (not shown) via a transmission mechanism.

The upper and lower belts 12, 12 are separated by a distance L on the entrance side (the right end side in the figure),
On the exit side (the left end side in the figure), it is brought into close contact with the paper sheet.

At the center of the upper and lower shafts 4, 5 on the entrance side of the transport path 1 in the transport direction, upper and lower transport rollers 13, 14, which are in the shape of a chain with a larger diameter at the center in the axial direction, are fixed. Paper sheet P by rollers 13 and 14
The center portion of the conveyance direction is pinched and conveyed.

A rotating shaft 15 is located between the front and rear pulleys 8 and 10 on the upper side and is perpendicular to the sheet conveying direction.
The rotary shaft 15 has protruding regulating pieces 16, 16 on the left and right sides in the sheet conveyance direction.
The base of is fixed. In the illustrated example, the regulating piece 1
6 and 16 are arranged between a pair of left and right belts 12 and 12.

The regulating pieces 16, 16 are biased by biasing means in a direction to maintain a state intersecting the conveyance surface of the conveyance path 1. In the illustrated embodiment, a weight 18 is provided at one end of the rotating shaft 15 via an arm 17 and protrudes toward the exit side at a predetermined angle with respect to the direction in which the regulating pieces 16, 16 extend. The weight 18 is brought into contact with a pedestal 19 so that the regulating pieces 16, 16 are maintained in a vertical position.

When the leading edge of the sheet P comes into contact with one of the regulating pieces 16 or 16, the biasing force by the weight 18 stops the leading edge and corrects the oblique posture of the sheet P. After correction, both left and right regulating pieces 16,
When the leading edge of the sheet P comes into contact with the sheet 16, the conveying force of the sheet P is such a force that the respective regulating pieces 16, 16 are moved to one side of the conveying surface for the first time.

In addition to the weight 18, the above-mentioned biasing means may include the weight 18,
It may be based only on the own weight of the regulating pieces 16, 16, or may be based on the torsional force of a coil spring, the tensile force of a tension spring, or the like.

In the illustrated example, the feeding means for feeding paper sheets P one by one from the sheet stacking section 2 includes a pulley 21 provided with a shaft 20 at the lower part of the feeding opening of the stacking section 2, and a loose endless belt 22 attached to the pulley 21. It is wound up so that its surface can freely come into contact with the lowest sheet P stacked in the stacking section 2. The lower running side of this endless belt 22 is held between rollers 23 and 24 and rotates in the direction of the arrow, so that the endless belt 22 rotates in the direction of the arrow, and the upper running side presses against the lower surface of the paper sheet P, causing the paper sheet to The P is moved out one by one.

A gate roller 25 that is rotatable only in the direction opposite to the conveying direction of the paper sheet P is mounted on the upper part of the pulley 21, and allows only one sheet of paper P to pass between it and the endless belt 22, and then passes the second sheet. A gap between the cages is formed to prevent further passage.

The conveying speed of the sheet P by the upper and lower conveying rollers 13 and 14 of the conveying path 1 is set higher than the conveying speed of the sheet P due to the belt movement of the endless belt 22 by the rollers 23 and 24 on the feeding side, and The sheets P are fed at predetermined intervals within the feeder.

Note that when the paper sheets P to be handled are thin and weak, such as banknotes, it is preferable to use a structure in which the paper sheet P is held and conveyed only by the conveyance rollers 13 and 14 at the center in the conveyance direction as in the illustrated embodiment. If the paper sheet does not deform during skew correction and slips between the paper sheet and the belt, such as when the paper sheet is thick and sturdy like a card, then the belt interval L on the entrance side of the conveyance path 1 should be adjusted.
Conventional conveying means may be used as is without providing a.

In the figure, reference numeral 26 denotes a stopper that determines the limit of retracting and turning movement of the regulating piece 16.

Next, the operation of the above embodiment will be explained.

The lowest paper sheets P accumulated in the stacking section 2 are shifted out one by one by the rotation of the endless belt 22 and sent out to the conveyance path 1 through the gates. , 14, the center portion of the sheet P in the conveyance direction is held between the sheets P and conveyed sequentially.

When the conveyed sheet P is skewed, the leading edge Pa on the preceding side hits one of the regulating pieces 16, as shown in FIG. However, in this state, the rotating shaft 15 that supports the regulating piece 16 does not rotate, so the conveyance by the conveying rollers 13 and 14 continues until the leading edge Pb on the trailing side hits the other regulating piece 16. The oblique posture of the leaf P is corrected as shown in the fifth figure. In this case, by using the conveyance rollers 13 and 14 as pinch-type rollers, the paper sheet P can be rotated smoothly, and the skew can be corrected more reliably.
As a result, the leading edge of the paper sheet P is controlled by both regulating pieces 16,
16, the conveying force by the conveying rollers 13, 14 acts on the regulating pieces 16, 16 through the sheet P, so that the sheet P is pushed aside and passes (as shown in the sixth figure).

Therefore, even if the paper leaves become loose when being fed out from the stacking section 2, they are corrected to a normal posture while being conveyed through the conveyance path 1.

[Effect of idea]

As explained above, the conveyed paper sheet straightening device according to the present invention has a rotary shaft that is freely rotatably supported on the machine frame perpendicular to the conveyance direction of the conveyance path for conveying paper sheets, and a rotary shaft that is fixed to this rotary shaft. at least two regulating pieces that are arranged in the width direction of the conveying path and that the leading edge of the conveyed sheet comes into contact with, and a biasing means that biases these regulating pieces in a direction that maintains the state intersecting the conveying path. The biasing means corrects the skewed posture of the conveyed sheet by stopping the leading edge of the conveyed sheet when the leading edge of the conveyed sheet comes into contact with any of the regulating pieces, and corrects the skewed posture of the conveyed sheet after the posture correction. Since the regulating pieces are configured to have a biasing force that can move each regulating piece to one side of the conveying surface by the conveying force of the paper sheet due to contact with the leading edge of the conveyed sheet, the electric oblique There is no need for line detection means or electrical control means, and it has excellent followability for high-speed processing.
Moreover, since it can be constructed in a small size, it is possible to easily select an arbitrary installation location, and it has various excellent effects such as being able to be incorporated into a conventional conveyance path.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a side view showing an example of a case where the present invention is combined with a sheet feeding means, FIG. 3 is a plan view of the same, and FIGS. 4 to 6 are explanatory diagrams showing the operating state. DESCRIPTION OF SYMBOLS 1... Conveyance path, 2... Paper stacking section, 3... Machine frame, 12... Belt, 13, 14... Conveyance roller, 15... Rotating shaft, 16... Regulating piece, 18...
Weight.

Claims (1)

[Scope of utility model registration request] A rotating shaft is rotatably supported on the machine frame perpendicular to the conveying direction of the conveying path for conveying paper sheets, and a rotary shaft fixed to this rotating shaft and arranged in the width direction of the conveying path, It is equipped with at least two regulating pieces whose leading edges abut, and a biasing means for biasing these regulating pieces in a direction to maintain a state intersecting the conveyance path, and this biasing means When the leading edge of a conveyed sheet comes into contact with a piece, the leading edge is stopped and the skewed posture of the conveyed sheet is corrected. A conveyed paper sheet skew correction device characterized by having a biasing force capable of retracting each regulation piece to one side of a conveyance surface by the conveyance force of the leaf.