JPH08227442A - Card reciprocal conveyance device - Google Patents

Abstract

PURPOSE: To provide the card reciprocal conveyance device which is small-sized and large in conveying force and suppresses the wear of a roller member. CONSTITUTION: The card reciprocal conveyance device 1 which clamps and conveys a card 3 with a 1st driving roller 2 and a 2nd driving roller 3 that are arranged opposite each other is provided with the 2nd driving roller 3 that is supported rotatably on a support shaft 4 and can move contacting and leaving the 1st driving roller 2; and a rotary driving force transmission pre-stage means 5 which transmits a rotary driving force to the 2nd driving roller 3 directly by including a rotary drive source M as its precedent means is set at a position where a component of a force of rotary moment based upon the rotary driving force transmitted by the rotary driving force transmission pre-stage means 5 to the 2nd driving roller 3 to the 1st driving roller 2 operates so that the 2nd driving roller 3 leaves the 1st driving roller 1 when the card C is conveyed in a carry-in direction A or the 2nd driving roller 3 comes into contact with the 1st driving roller 2 when the card C is carried in a carry-out direction B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card reciprocating conveying device having a pair of drive rollers whose pad pressure changes.

[0002]

2. Description of the Related Art A card reciprocating conveying device represented by a credit card or a prepaid card holds a card between a driving roller and a driven roller provided in a card conveying path, and switches the rotation direction of the driving roller between forward and reverse. Cards are being transported back and forth. The driven roller is pressed against the peripheral surface of the drive roller with a constant pressing force (pad pressure) by an urging means such as a spring so that the card can be firmly held.
In the card reciprocating transport device, the card that has been taken in from the take-in port is returned to the original take-in port even if it is moved back and forth. It may end up.

[0003]

In order to prevent such card jamming, the rotational torque of the driving roller is increased and the pressing force of the driven roller against the driving roller is increased to increase the card conveying force, or the card is conveyed. It is conceivable to increase the transport driving force when the card is transported in the unloading direction as compared with the transport driving force when the card is transported in the loading direction. However, an increase in the rotational torque of the drive roller leads to an increase in the size of the drive source such as the drive motor, and if the pressing force of the driven roller is simply increased by the biasing means, the friction between the card and the drive roller or the driven roller increases. As a result, there arises a problem that the durability of both rollers and the card is deteriorated.

[0004]

Therefore, in the invention described in claim 1, the support shaft for rotatably supporting the second drive roller is provided with respect to the first drive roller arranged to face the second drive roller. The second drive roller is provided so as to be movable in the contact and separation directions,
A rotary drive force transmitting front stage means for directly transmitting the rotary drive force to the second drive roller with the rotary drive source as the front stage;
At the installation position of the rotational drive force transmission front stage means, the component force of the rotational moment due to the rotational drive force transmitted to the second drive roller by the rotational drive force transmission front stage means in the direction toward the first drive roller is When the card is conveyed in the carry-in direction, the second drive roller acts in a direction away from the first drive roller, and when the card is conveyed in the carry-out direction, the second drive roller is The position was set so as to act in the direction of coming into contact with the first drive roller. In the invention according to claim 2, on the free end side of the cantilevered arm member in which the base end is provided on the rotation support shaft of the rotary drive force transmission front stage means,
The second drive roller is arranged.

[0005]

According to the first aspect of the present invention, the second driving roller, which is arranged to face the first driving roller and is supported by the support shaft that is movably installed in the direction to move toward and away from the first driving roller, is rotationally driven. The rotary drive force transmitting front stage means for directly transmitting the rotary drive force with the source as the front stage is directed to the first drive roller of the rotational moment due to the rotary drive force transmitted to the second drive roller by the rotary drive force transmitting front stage means. When the card is conveyed in the carry-in direction, the second driving roller acts in the direction in which the second driving roller moves away from the first driving roller,
When the card is conveyed in the carry-out direction, it is set at a position where the second drive roller acts in the direction in which the second drive roller contacts the first drive roller. Therefore, when the card is conveyed in the loading direction, the second drive roller acts in a direction away from the first drive roller, and the pressing force in the direction toward the first drive roller becomes weak. If the card is transported in the exit direction, the second
The driving roller acts on the first driving roller so as to contact the first driving roller, and the pressing force in the direction toward the first driving roller becomes strong. According to the invention described in claim 2, since the second drive roller is arranged on the free end side of the cantilevered arm member having the base end on the rotary support shaft of the rotary drive force transmission front stage means, the rotary drive force is arranged. When the rotational driving force is transmitted from the pre-transmission unit to the second driving roller, the pressing force of the second driving roller with respect to the first driving roller changes due to the rotational moment due to the transmitted rotational driving force. The arm member maintains a constant axial distance between the support shaft that supports the second drive roller and the rotation support shaft.

[0006]

【Example】

(First Embodiment) A card reciprocating conveying device indicated by reference numeral 1 in FIG. 1 conveys a card C in both reciprocating directions between a carry-out position indicated by a solid line and a carry-in position indicated by a chain double-dashed line. The first drive roller 2 and the second drive roller 3 supported by the support shaft 4, and the drive motor M as a rotary drive source for the second drive roller 3 are directly connected to the motor M as a preceding stage.
The rotary drive force transmission pre-stage means 5 for transmitting the rotary drive force is provided.

The first drive roller 2 is fixed to a drive shaft 6 of a drive motor M capable of normal and reverse rotation, and is normally / reversely rotated. Both ends 6a and 6b of the drive shaft 6 are rotatably supported by a frame (not shown). A gear 7 is fixed to the base end 6b near the drive motor M. Gear 7
Engages with a gear 9 fixed to a rotary support shaft 8 which constitutes a part of the rotary drive force transmission front stage means 5.

The second drive roller 3 is integrally rotatably supported and fixed to a support shaft 4 loosely fitted in an elongated hole 16 formed in a frame (not shown) (see FIG. 2). Slot 16
It is formed in an arc shape centered on the rotation support shaft 8. The second drive roller 3 is arranged with a gap L between the upper side of the first drive roller 2 and the second drive roller 2. The gap L is set to be narrower than the card thickness CL. Further, the first driving roller 2 and the second driving roller 3 are rollers each having a surface formed of a rubber material,
When the card C is inserted between both rollers, it elastically deforms,
The card C is sandwiched. That is, the support shaft 4 supports the second drive roller 3 so as to be movable with respect to the first drive roller 3 in the separating direction indicated by the arrow a and the approaching direction indicated by the arrow b.

The rotary drive force transmission front stage means 5 is provided with a drive belt 10 stretched around belt pulleys 11 and 12, and a lever 13 supported by a rotary support shaft 8 as an arm member. The belt pulley 11 has a tip 4 a of the support shaft 4.
The belt pulley 12 is fixed to the tip 8 a of the rotation support shaft 8. The lever 13 has a base end 13a.
Rotatably supports the rotary support shaft 8 via a bearing 14,
The support shaft 4 is rotatably supported by the rotating end 13b via a bearing 15.

As shown in FIG. 2, the lever 13 is engaged with the other end 17b of a compression coil spring 17 whose one end 17a is fixed to a frame (not shown). The compression coil spring 17 serves as a biasing means, and the second drive roller 3
Is urged toward the first drive roller 2 with a constant pressing force (reference pressing force).

In the rotational driving force transmitting front stage means 5, the component force of the rotational moment due to the rotational driving force transmitted to the second driving roller 3 to the first driving roller 2 is carried in the card C in the carrying-in direction indicated by the arrow A. In this case, the second drive roller 3 acts so as to move away from the first drive roller 2, and the card C moves in the direction of arrow B.
It is set at a position where the second drive roller 3 acts in a direction in which the second drive roller 3 contacts the first drive roller 1 when the second drive roller 3 is conveyed in the carry-out direction. Here, the position of the rotation support shaft 8 is arranged below the support shaft 4 of the second drive roller 3 and on the carry-in side.

In this embodiment, the forward rotation means the direction in which the card C is conveyed in the carry-in direction indicated by the arrow A, and the reverse rotation means the direction in which the card C is conveyed in the carry-out direction indicated by the arrow B. The drive motor M rotates counterclockwise when it rotates forward and clockwise when it rotates backward.

The operation of the card reciprocating transfer device 1 having such a configuration will be described. When the drive shaft 6 rotates in the counterclockwise direction due to the activation of the drive motor M (during normal rotation), the integrated first drive roller 2 and gear 7 rotate in the same direction as shown in FIG. When the gear 7 rotates, the gear 9 rotates clockwise, and this rotation is transmitted to the second drive roller 3 via the belt 10. Then, a rotational moment in the direction indicated by the arrow M1 is applied to the second drive roller 3 which is biased toward the first drive roller 2 by the reference pressing force, and the first drive roller 2
The component force of the rotation moment M1 toward the direction becomes the upward direction indicated by the symbol F1. This component force reduces the pressing force on the first drive roller 2. That is, the rotation moment M1
Of the second drive roller 3 by the component force of the second drive roller 3 in the F1 direction.
The pressing force in the direction toward the drive roller 2 becomes weaker than the reference pressing force of the compression coil spring 17. Gap L
Is set to be smaller than the card thickness CL, so when the card C placed at the carry-out position is carried in the carrying-in direction indicated by the arrow A, the card C is inserted in the direction of the arrow A. Then, the first drive roller 2 and the second drive roller 3 are deformed, and the card C is nipped and conveyed to the loading position shown in FIG. When the card C is sandwiched between the first drive roller 2 and the second drive roller 3 and the card thickness CL cannot be absorbed due to the deformation of both rollers, the support shaft 4 slightly moves in the separating direction indicated by the arrow a. To absorb the card thickness CL. When the drive motor M stops, the rotational moment M1 disappears, so that the component force in the F1 direction also disappears. Therefore,
The second drive roller 3 is biased toward the first drive roller 2 only by the reference pressing force of the compression coil spring 17.

(During reverse rotation) On the other hand, when the drive motor M rotates in reverse and the drive shaft 6 rotates in the clockwise direction, the integrated first
The drive roller 2 and the gear 7 are rotationally driven in the same direction as shown in FIG. When the gear 7 rotates, the gear 9 rotates counterclockwise, and this rotation is transmitted to the second drive roller 3 via the belt 10. Then, the second drive roller 3 to which the reference pressing force by the compression coil spring 17 is applied.
Is given a rotational moment in the direction indicated by the arrow M2, and the component of the rotational moment M2 toward the first drive roller 2 is in the downward direction indicated by the symbol F2.

Therefore, the component force of the rotation moment M2 is applied to the reference pressing force applied to the second drive roller 3, and the first drive roller 2 and the second drive roller 3 elastically deform to hold the card C. Therefore, when the card C placed at the carry-in position shown in FIG. 3 is carried in the carry-out direction shown by the arrow B,
The card C is clamped between the first drive roller 2 and the second drive roller 3 more strongly than during normal rotation, and is conveyed to the carry-out position shown in FIG. When the drive motor M is stopped, the rotational moment M2 disappears, and the component force in the F2 direction also disappears.
Therefore, the second drive roller 3 is the compression coil spring 1
It is urged toward the contact direction with the first drive roller 2 indicated by arrow b only by the reference pressing force of 7.

According to this structure, the pressing force of the second drive roller 3 against the first drive roller 2 causes the card C to be carried out (arrow B) more than when the card C is carried in the carry-in direction (arrow A). Since it becomes stronger at the time of conveyance to, the card conveyance force becomes larger at the time of conveyance in the carry-out direction. Therefore, when such a card reciprocating transfer device 1 is arranged in a known magnetic card reader with the right side in FIGS. 2 and 3 as the insertion side, the card C is carried out from the magnetic card reader in the carrying-out direction. Even if the card C is jammed in the magnetic card reader, the carrying force becomes large, and the jammed card C can be reliably carried out to the insertion side.

Since the second drive roller 3 is pressed against the first drive roller 2 more strongly than the reference pressing force only when the card C is carried out, the urging means such as a spring is simply strengthened to make the first drive roller 3 stronger. Compared to the case where the standard pressing force on 2 is always increased,
The wear of the first drive roller 2 and the second drive roller 3 and the damage of the card C can be suppressed.

Further, since the support shaft 4 and the rotary support shaft 8 are supported at both ends of the lever 13, the distance between the shafts is kept constant and the positional accuracy of the second drive roller 3 is improved. This leads to stabilization of the pressing force of the second drive roller 3 against the first drive roller 2.

(Second Embodiment) In the second embodiment, the structure other than the rotational driving force transmitting front stage means 5 in the first embodiment is changed to the first embodiment.
The configuration is similar to that of the embodiment. Therefore, the same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.
As shown in FIG. 4, the rotary drive force transmission front stage means 5 ′ in the second embodiment is capable of rotating the gears 18, 19, 20 for transmitting the rotation of the drive shaft 6 to the second drive roller 3 and the support shaft 4 freely. It is composed of a lever 21 as a lever member that is supported by. The gears 18 and 19 mesh with each other and are rotatably supported by a fixed portion such as a frame (not shown). The gear 18 meshes with the gear 7 on the drive shaft 6, and the gear 19 meshes with the gear 20 on the support shaft 4. Lever 21
Has its base end 21a rotatably supported by a support shaft 22 of the gear 19. The support shaft 4 is rotatably supported by the rotating end 21 b of the lever 21. The lever 21 urges the second drive roller 3 toward the first drive roller 2 with a constant pressing force (reference pressing force) by the spring force of the compression coil spring 17.

According to this structure, when the drive motor M is activated and the drive shaft 6 rotates counterclockwise, the first
The drive roller 2 is rotationally driven in the same direction, and the rotation is transmitted from the gears 7, 18, 19 to the gear 20. When the gear 19 and the gear 20 rotate, the gear 20 rotates in the clockwise direction and tries to move on the fixed side gear 19 in the counterclockwise direction. However, since the reference pressing force of the compression coil spring 17 acts on the lever 21 and the support shaft 4 is loosely fitted in the elongated hole 16, the pressing force is increased.
The gear shaft 2 is mounted on the support shaft 4 that supports the gear 20 via the gear 2
0 rotates while its movement is restricted.

When the gear 20 rotates, a rotation moment in the direction indicated by the arrow M1 is given to the second drive roller 3 which is integrated, and the rotation moment M toward the first drive roller 2 is given.
The component force of 1 goes upward. Therefore, the first drive roller 2
The pressing force of the second drive roller 3 with respect to is lower than the reference pressing force. Therefore, when the card C placed at the carry-out position indicated by the chain double-dashed line in FIG. 4 is conveyed in the carry-in direction indicated by arrow A, the first drive roller 2 and the second drive roller 3 are pressed by a force weaker than the reference pressing force. It is nipped by pressure and conveyed to the loading position shown by the solid line.

On the other hand, the drive motor M rotates in the reverse direction to drive the drive shaft 6
In the clockwise direction, the first drive roller 2 is rotationally driven in the same direction, and its rotation is caused by the gears 7, 18, 19,
It is transmitted to the second drive roller 3 via 20. Then
A rotation moment in the direction indicated by the arrow M2 is applied to the second drive roller 3, and the component force of the rotation moment M2 toward the first drive roller 2 becomes downward. The second driving roller 3 is applied with this component force and the reference pressing force by the compression coil spring 17, and is biased in the contact direction indicated by the arrow b with respect to the first driving roller 2. As a result, the pressing force applied to the first drive roller 2 becomes stronger than the reference pressing force applied by the compression coil spring 17. Therefore, when the card C placed at the carry-in position shown by the solid line is conveyed in the carry-out direction shown by the arrow B, the first drive roller 2 and the second drive roller 3
It is clamped more strongly than during normal rotation and is conveyed to the carry-out position indicated by the chain double-dashed line.

When the drive motor M is stopped, the rotation moments M1 and M2 are not generated during the forward / reverse rotation.
That's not enough power. Therefore, the second drive roller 3 is biased toward the first drive roller 2 only by the reference pressing force of the compression coil spring 17.

As described above, the transmission of the rotational driving force to the second drive roller 3 is transmitted from the pulleys 11 and 12 and the belt 10 in the first embodiment to a plurality of gears 18, 19 and 20.
When the transmission is performed by, the occurrence of slip is less than in the case of belt transmission, and the transmission loss of the rotational driving force from the drive motor 6 can be reduced. Also, the gears 7 and 20 and the gear 1
By changing the gear ratio of 8 and 19, the first drive roller 2
Therefore, the rotational driving force applied to the second driving roller 3 can be easily adjusted.

In the above two embodiments,
Although the first driving roller 2 and the second driving roller 3 are separated from each other, the present invention is not limited to this. For example,
The second drive roller 3 may be urged toward the first drive roller 2 by the urging means so that the first drive roller 2 and the second drive roller 3 are always in contact with each other. In this case, if the hardness of the elastic bodies of the first drive roller 2 and the second drive roller 3 is high and the thickness thereof is thin, the displacement of the second drive roller 3 is small, and if the hardness of the elastic body is low, the second drive roller 3 is displaced. The displacement of the drive roller 3 becomes large.
That is, the amount of displacement of the support shaft 4 in the arrow a direction differs depending on the hardness and thickness of the elastic body. Therefore, the card C sandwiched between the first drive roller 2 and the second drive roller 3 is provided by providing a structure capable of absorbing the displacement of the second drive roller 3, such as setting the reference pressing force lower than that in each of the above-described embodiments. In addition, an excessive pressing force other than the component force due to the rotation moment of the second drive roller 3 is not applied. In any case, when the card C is moved in the carry-out direction (the direction of arrow B), the first drive roller 1 and the second drive roller 1
It is essential to adopt a mechanism in which the pressure contact force with the drive roller 3 becomes large.

[0026]

According to the first aspect of the invention, when the card is conveyed in the loading direction by the component of the rotational moment of the second drive roller, the direction of the second drive roller toward the first drive roller is increased. When the card is conveyed in the carry-out direction, the pressing force of the second drive roller in the direction toward the first drive roller becomes strong. Therefore, the card carrying force in the carry-out direction becomes larger than the carrying force in the carry-in direction without increasing the drive source, and card jamming during card carrying in the carry-out direction can be reduced. Further, since the pressing force of the second drive roller on the first drive roller is not always strong, it is possible to suppress the abrasion of the first drive roller and the second drive roller and the damage of the card even when the card carrying force becomes large. it can. Furthermore, since the carrying force can be increased without increasing the size of the drive source, it is possible to prevent the apparatus from becoming large.

According to the second aspect of the present invention, the axial distance between the support shaft for supporting the second drive roller and the rotary support shaft is kept constant. Therefore, in addition to the effect of the first aspect of the invention. The positional accuracy of the second drive roller is increased, and the reference pressing force of the second drive roller with respect to the first drive roller is stabilized. Further, by improving the positional accuracy, when the second driving roller and the first driving roller come into contact with each other, the contact state of both rollers can be stabilized and the abrasion of both rollers can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall configuration of a first embodiment of the present invention.

FIG. 2 is a side view showing an operation of the first embodiment when a card is loaded.

FIG. 3 is a side view showing the operation of the first embodiment when the card is carried out.

FIG. 4 is a side view showing the configuration and operation of the second embodiment of the present invention.

[Explanation of symbols]

 1 Card Reciprocating Conveyor 2 First Drive Roller 3 Second Drive Roller 4 Support Shaft 5, 5'Rotary Driving Force Transmission Front Stage Means 8 Rotation Support Shaft 13, 21 Arm Member 13a, 21a Base End 13b, 21b Free End A Loading Direction B carry-out direction C card M rotational drive source a, b contact / separation direction M1, M2 rotational moment

Claims (2)

[Claims] 1. A card reciprocating conveyance device for nipping a card by a first driving roller and a second driving roller which are arranged to face each other and conveying the card in both reciprocating directions, wherein the second driving roller is rotatably supported. , A support shaft provided with the second drive roller movably in the contacting and separating direction with respect to the first drive roller, and a rotation for directly transmitting the rotary drive force to the second drive roller with a rotary drive source as the preceding stage. A driving force transmission front stage means, wherein the installation position of the rotational drive force transmission front stage means is the first drive of the rotational moment by the rotational driving force transmitted to the second drive roller by the rotational drive force transmission front stage means. When the card is conveyed in the carry-in direction, the component force in the direction toward the roller acts so that the second drive roller moves away from the first drive roller, and the card is conveyed in the carry-out direction. The case card reciprocated apparatus characterized by said second drive roller is set in a position to act in a direction in contact with the first driving roller. 2. The rotary drive force transmitting front stage means has a rotary support shaft, and the second drive roller is arranged on the free end side of a cantilevered arm member having a base end on the rotary support shaft. The card reciprocating transfer device according to claim 1, wherein