JP4376121B2 - Medium transport device - Google Patents

Description

  The present invention relates to a medium conveying apparatus.

  As a medium conveying apparatus in which a paper discharge rotating body is attached to a terminal roller of a medium conveying path and a rear end of the medium is scraped off when discharging the conveyed medium from the conveying path, the one described in Patent Document 1 is disclosed. Are known. In this conventional example, a pressure roller and a paper discharge roller that convey the medium to the paper tray side with a medium sandwiched are disposed at the end of the medium transport path, and the free end is coaxial with the paper discharge roller. A paper discharge rotator provided with a protrusion located on the circumference slightly larger than the diameter is mounted.

  Even if the end edge of the medium is released from the nipping between the pressure roller and the discharge roller and it becomes difficult to feed out the medium, the protrusion of the paper discharge rotating body presses the surface of the medium and detaches from the conveyance path at the end of the medium. To force.

After the paper is discharged, the paper discharge rotator is connected to the paper discharge roller only in the paper discharge direction so as not to pinch the discharged paper again when the paper discharge rotator is rotated in reverse. It is connected to the drive shaft of the discharge roller via a clutch so as to idle in the direction.
JP-A-9-58912

  However, in the above-described conventional example, there is a problem described below when the paper is once held at the end of the transport path and can be transported again to the processing system on the transport path without being separated from the transport path.

  That is, it seems that the paper discharge rotator does not adversely affect the paper in the rotational direction in which the paper is returned to the processing system side, because the idling with respect to the drive shaft is ensured by the clutch. However, although the clutch cuts off the positive power transmission from the drive shaft to the paper discharge rotator, it does not completely prohibit the follow-up rotation of the paper discharge rotator due to friction or the like, and the paper discharge rotator becomes passive. It rotates following the rotation of the drive shaft. Since no control is given to the rotation angle due to this passive follow-up, the rotation posture of the sheet discharge rotating body arranged on both side edges of the conveyance path, precisely, the phase of the protrusion does not match. .

On the other hand, when the medium is moved in the ejecting direction and the medium is sandwiched, the clutch is in the “contact” state, so that the conveying force by the protrusion is applied to both side edges of the medium. As described above, when the pinching operation is performed in a state where the phases of the protrusions do not match on both sides, as shown by the chain line in FIG. The medium 9 is skewed. If the medium 9 is transported in the direction of the processing system in this state, it causes a jam or the like.

  The present invention has been made to solve the above-described drawbacks, and an object of the present invention is to provide a medium transport apparatus that can transport a medium in the direction opposite to the discharge direction without skewing in addition to medium discharge.

  The medium 9 is transported on the transport path 1 by sandwiching the medium 9 by the transport roller 2 composed of the driving roller 2a and the driven roller 2b, and rotating the driving roller 2a in the transport direction by the drive shaft 3. Done.

  In order to ensure the separation of the medium 9 from the conveyance path 1, a medium dropping rotary body 5 is attached to the drive shaft 3. When the rear end edge of the medium 9 is separated from the transport roller 2, the medium dropping rotating body 5 presses the rear end edge of the transport by the protrusion 4 having a larger rotation tip diameter than the transport roller 2. Is removed from the conveyance path 1.

  The medium dropping rotator 5 has the drive shaft 3 in the direction of separation of the medium 9 so that the medium 9 once separated is not re-engaged and called into the conveyance path 1 when the conveyance roller 2 is driven to rotate in the reverse direction. It rotates together with the drive shaft 3 only when it is being driven, and is disconnected from the drive shaft 3 during reverse rotation.

  The phase adjusting member 6 matches the phase of the protrusion 4 by restricting the range of the passive follow-up rotation with respect to the drive shaft 3 in the “disconnected” state with the drive shaft 3 of the medium dropping rotating body 5, and the phase difference Prevents the medium 9 from skewing.

  As a result, the medium 9 conveyance path 1 can be effectively used as, for example, a temporary retreat path for the medium 9 in addition to discharging the medium 9.

  In the present invention, in addition to discharging the medium 9, the medium 9 can be transported in the direction opposite to the discharging direction without skew.

  FIG. 1 shows a passbook printer to which the present invention is applied. The passbook printer is configured by connecting a front unit 10, a center unit 11, and a rear unit 12. In each of these units 10, 11, and 12, a conveyance path 1 is formed in which conveyance rollers 2 are arranged at intervals at which at least a passbook (medium 9) can be transferred. Each transport roller 2 is configured by pressing a driven roller 2b that rotates integrally with the drive shaft 3, and as shown in FIG. 2B, the passbook 9 is composed of a drive roller 2a and a driven roller 2b. Carry and hold it.

  The bankbook 9 inserted from the bankbook insertion slot 10a opened in the front unit 10 is first transported to the center unit 11 in which processing systems are centrally arranged after the magnetic stripe is read by a magnetic reader / writer (not shown). . The center unit 11 is provided with a print page detection unit 11a configured by a scanner, a print unit 11b having a print head, and a page turning unit 11c. The page to be printed is opened by the page turning section 11c, and the transaction contents to the bankbook 9 are printed in the printing section 11b.

The rear unit 12 has a new passbook stock unit 12 a for stocking the new passbook 9 and a passbook take-in unit 12 b for collecting the printed passbook 9, which are branched conveyance paths 1 A branched in the rear unit 12. 1B is arranged at the end of 1B. When there is no writable page by the printing process in the center unit 11 , the printed passbook 9 is first transported to the branch transport path 1A on the passbook take-in portion 12b side to clear the transport path 1 in the center unit 11 , and this Thereafter, the new passbook 9 is supplied from the new passbook stock unit 12 a to the conveyance path 1. The new passbook 9 supplied into the transport path 1 is returned to the user from the passbook insertion port 10a after necessary processing is performed in the center unit 11 or the front unit 10. When the new passbook 9 is returned to the user, the printed passbook 9 is also transported to the front unit 10 side again and returned to the user from the passbook insertion slot 10a, and the user forgets to take the printed passbook 9 In other words, the printed passbook 9 is again conveyed to the rear unit 12 side and accommodated in the passbook take-in portion 12b.

  FIG. 2 shows details in the vicinity of the passbook take-in unit 12b. The passbook take-in portion 12b is disposed at a position where it can receive the passbook 9 that is separated from the transport path 1 and drops, and at the end of the transport path 1, the driving roller 2a, the driven roller 2b, and the medium dropping rotor 5 are disposed. Is placed. The medium dropping rotary body 5 is mounted on the drive shaft 3 corresponding to both side edges of the medium 9 in the conveying direction, and the four rotary blades (projections 4) are spaced from the main body 5a having a diameter smaller than that of the drive roller 2a by 90 ° intervals. It is formed by projecting radially. Each rotor blade 4 is made of an elastic material such as a synthetic resin material and has a free end whose length is located on the same circumference having a diameter larger than the diameter of the drive roller 2a.

  Further, the main body 5a of the medium dropping rotary body 5 is attached to the drive shaft 3 via a clutch (not shown), and the drive shaft 3 is rotated in a direction (discharge direction) in which the medium 9 is conveyed to the passbook take-in portion 12b side. Thus, it is connected to the drive shaft 3 and is in a “disconnected” state in which rotation power cannot be transmitted with respect to reverse rotation.

  Therefore, in this embodiment, when the new bankbook 9 is issued, the printed bankbook 9 stands by in the branch conveyance path 1A with the leading end in the discharge direction being sandwiched between the conveyance rollers 2, and enters the bankbook insertion port 10a of the new bankbook 9. Along with the delivery, it is conveyed again to the front unit 10 side. At this time, since the clutch is in the “disengaged” state, the operating force from the rotary blade 4 is not applied to the bankbook 9, and skewing or the like is prevented.

  On the other hand, when the printed passbook 9 is forgotten, the passbook 9 continues to be conveyed again in the discharging direction and is accommodated in the passbook take-in portion 12b. Even after the conveyance trailing edge of the bankbook 9 is released from the nipping of the conveyance roller 2 and the conveyance force to the bankbook 9 is lost when being accommodated in the bankbook take-in portion 12b, the medium dropping rotation is further performed. Since the rotary blade 4 of the body 5 pushes the bankbook 9 downward, the bankbook 9 surely falls to the bankbook take-in portion 12b.

  In order to make the phase of the rotary blade 4 of the medium dropping rotary body 5 coincide on both the left and right sides, a phase matching member 6 is arranged. The phase adjusting member 6 is formed by rotatably supporting a rotating roller 6 b at the tip of a spring plate 6 a fixed to the wall surface of the conveyance path 1, so that the rotating roller 6 b is located in the rotation region of the rotating blade 4. Be placed.

  In FIG. 2A, when the driving roller 2a is rotated in the discharging direction (counterclockwise in the drawing), the clutch is in the “contact” state, and the medium dropping rotary body 5 also rotates following the driving roller 2a. The rotating blade 4 comes into contact with the rotating roller 6b of the phase matching member 6 by the rotation of the medium dropping rotating body 5, and when the driving operation is continued thereafter, the medium dropping rotating body 5 forcedly rotated by the drive shaft 3 is Since the spring plate 6a of the phase matching member 6 is elastically deformed so that the rotating roller 6b is retracted from the rotating region of the rotating blade 4, the rotating operation is not hindered. When the rotating roller retreats from the position where the rotating blade 4 interferes with the rotating blade 4, the rotating roller 6b rotates idly, so that wear of the rotating blade 4 or the rotating roller 6b accompanying the operation is prevented.

  On the other hand, when the temporarily held medium 9 is conveyed in the reverse direction, the clutch is in the “disengaged” state, and the medium dropping rotary body 5 is passively rotated by the friction force or the like in the rotation of the drive shaft 3. Following rotation rotates and contacts the rotating roller 6b of the phase matching member 6. In this state, since the power transmission from the drive shaft 3 is cut off to the medium dropping rotator 5, the medium dropping rotator 5 stops in this posture, and the left and right rotating postures are forcibly matched. When the bankbook 9 is called again in this state, the protrusions 4 are brought into contact with both sides of the medium 9 under the same condition to give the conveying force under the same condition, so that the skew of the medium 9 is completely prevented.

FIG. 3A shows a first modification of the phase matching member 6. In the following description of the modified example, the medium dropping rotator 5 is a direction in which the clockwise direction is the direction in which the passbook 9 is conveyed in the opposite direction to the above embodiment, and the clutch “contact”. The state, counterclockwise, corresponds to the clutch "disengaged" state. In this modification, the phase matching member 6 is formed as a rotating body having a plurality of blades 13a, 13a,. The size, number, and position of the phase matching member 6 of the blades 13a are set so that at least one blade 13a always enters the rotation region of the rotary blade 4, and in FIG. A case is shown in which four blades 13a are projected at a pitch of 90 °. The phase adjusting member 6 is connected to the pivot 13b via a clutch (not shown) so that it can rotate counterclockwise and cannot rotate clockwise.

  Therefore, in this modified example, when the medium dropping rotator 5 is driven to rotate in the discharging direction, that is, clockwise, the blade 13a is pushed against the phase adjusting member 6 by the rotating blade 4 and rotates counterclockwise. Power is given. The phase adjusting member 6 is allowed to rotate in this direction, and the phase adjusting member 6 opens the passage of the rotor blade 4 while intermittently rotating. As shown in FIG. The body 5 can continue to rotate.

  On the other hand, with respect to the counterclockwise rotation of the medium dropping rotating body 5, the rotary blade 4 applies a clockwise rotational force to the phase adjusting member 6, but the phase adjusting member 6 is allowed to rotate in this direction. Therefore, as shown in FIG. 3A, the medium dropping rotary body 5 stops in a rotational posture in which the rotary blade 4 contacts the blade 13a. As a result, the phases of the rotary blades 4 of the medium dropping rotary body 5 corresponding to the left and right side edges of the medium 9 coincide.

  FIG. 3C shows a second modification. The phase matching member 6 according to this modification is formed as a solenoid capable of driving the shaft 14a between a protruding posture and a housing posture. As shown in FIG. 3 (c), this solenoid enters the rotation region of the rotor blade 4 with the shaft 14a protruding, and is disposed at a position where it is retracted from the rotation region in the accommodation posture shown in FIG. 3 (d). Is done.

  Therefore, in this modification, when the medium dropping rotator 5 is driven to rotate counterclockwise, the phase of the rotary blade 4 is adjusted by driving the shaft in a protruding state and restricting the rotation of the medium dropping rotator 5 in advance. The media 9 can be matched at both side edges.

  FIG. 4 shows a third modification. In this modification, the phase matching member 6 is configured as a torsion spring that holds the coil portion 7a rotatably around the support shaft at a predetermined angle. The rotation stroke of the torsion spring is determined by restricting the movement of the leg portion 7b by the stoppers 7c and 7c '. The torsion spring is disposed at a position where one of the leg portions 7b always enters the rotation region of the rotary blade 4 of the medium dropping rotary body 5 and at a rotation stroke.

  FIG. 4A shows the relative relationship at the time of phase restriction, and the torsion spring is prohibited from rotating clockwise because one leg 7b is in contact with the stopper 7c. As a result, the counterclockwise rotation of the medium dropping rotary body 5 with which the rotary blade 4 contacts the other leg 7b 'is restricted and forcibly stopped at the rotational position.

  On the other hand, when the medium dropping rotary body 5 is driven to rotate clockwise, first, as shown in FIG. 4B, the rotor blade 4 interferes with the other leg portion 7b ′, and the phase adjusting member. 6 rotates counterclockwise, and then, as shown in FIG. 4 (c), one leg 7b is pushed by the next rotating blade 4 and further rotated counterclockwise. As shown in FIG. 4 (d), the phase adjusting member 6 can be rotated by the rotary blade 4 until the other leg portion 7b 'comes into contact with the other stopper 7c'. When the body 5 is driven to rotate, the coil drop part 7a or the leg part 7b is elastically deformed to open the passage of the rotor blade 4, so that the medium dropping rotor 5 can continue to rotate.

  When the rotor blade 4 gets over one leg portion 7b, the leg portion 7b elastically returns to its original position as shown in FIG. 4 (e), and again enters the rotation region of the rotor blade 4, When the medium dropping rotator 5 is depolarized counterclockwise from the state, it returns to the state shown in the figure through the state shown in FIG. 4 (f) in the reverse procedure described above, and the medium dropping rotator 5 is stopped at this position. Let

  FIG. 5 shows a fourth modification. In this modification, the phase matching member 6 is configured as a spring hinge provided with a fixed piece 8b and a movable piece 8a. The spring hinge in this modification cannot be an angle between the fixed piece 8b and the movable piece 8a of 90 ° or less, and is biased to the minimum angle side by a spring (not shown).

  The spring hinge is attached in such a posture that the movable piece 8a enters the rotation region of the rotary blade 4, and as shown in FIG. 5A, the medium dropping rotary body 5 is pressed by holding the rotary blade 4 with the movable piece 8a. Restricts counterclockwise rotation. On the other hand, as shown in FIG. 5B, clockwise rotation of the medium dropping rotator 5 is possible in order to match the movable direction of the movable piece 8a, and after passing the rotary blade 4, As shown in FIG. 5C, the movable piece 8a is returned to its original position by a spring.

It is explanatory drawing which shows the structure of a passbook printer. It is a figure which shows this invention, (a) is sectional drawing which shows the passbook taking-in part vicinity, (b) is the top view which looked at the conveyance path of (a) from upper direction. FIGS. 5A and 5B are diagrams showing a modification of the phase matching member, where FIG. 5A is a diagram showing a phase regulation state according to the first modification, FIG. 5B is a diagram showing a rotation state of the phase matching member, and FIG. The figure which shows the phase control state by an example, (b) is a figure which shows the rotation state of a phase alignment member. It is a figure which shows the 3rd modification of a phase alignment member. It is a figure which shows the 4th modification of a phase alignment member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conveyance path 2 Conveyance roller 3 Drive shaft 4 Protrusion part 5 Medium dropping rotary body 6 Phase alignment member 7a Coil part 7b Leg part 8a Movable piece

Claims (5)

A medium conveying apparatus that once holds the medium at the end of the conveying path and can be conveyed again to the processing system on the conveying path without leaving the conveying path,
A transport roller disposed at the end of the transport path;
It is arranged on both sides in the width direction of the transport path, and is connected to the drive shaft of the transport roller in rotation in the medium discharge direction from the transport path and is connected free to rotate in the reverse direction, and the tip is compared with the transport roller. And a medium dropping rotary body provided with a plurality of protrusions located on the circumference of the large diameter,
Rotation in the medium discharge direction due to friction of the drive shaft of the medium drop rotator with respect to the drive shaft of each medium drop rotator when the medium is conveyed to the processing system by interfering with the protrusions of the medium drop rotators. And a phase adjusting member that regulates the rotation range opposite to that of the medium dropping rotating body and matches the rotation posture of both of the medium dropping rotating bodies.
The phase adjusting member is a rotating body that intermittently rotates by interfering with the protrusion of the medium dropping rotating body,
2. The medium conveying apparatus according to claim 1, wherein the medium conveying apparatus is supported so as to be able to follow and rotate only during forced rotation of the medium dropping rotary body. The phasing member, Ri Ah with solenoids reciprocating driven toward the rotation area of the projecting portion, the drive shaft is driven to advance the shaft accommodating position when rotating in the medium ejection direction from the conveying path, reverse The medium conveying apparatus according to claim 1 , wherein the shaft is driven in a projecting posture in advance when rotating to a position . The phase matching member is a torsion spring having leg portions extending from both ends of the coil portion.
The medium transporting apparatus according to claim 1, wherein any one of the leg portions is rotatably supported within a range in which the leg portion can interfere with the protrusion. The medium conveying apparatus according to claim 1, wherein the phase adjusting member is a spring hinge in which the movable piece moves forward and backward from the rotation area of the protrusion and is urged in the direction of entering the rotation area.

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