JP3971677B2 - Medium conveying apparatus and medium tip position setting method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a medium transport capable of correctly setting the leading end position of a medium with respect to an apparatus that requires positioning of the leading end of a medium such as a printer in various apparatuses such as an automatic transaction apparatus and a passbook bookkeeping machine used in financial institutions. The present invention relates to an apparatus and a method for setting the leading end of a medium, and can deal with a wide variety of media such as a booklet such as a passbook, a single sheet, or a copy sheet.
[0002]
[Prior art]
For example, in a printer or the like, there has been a structure as shown in FIGS. 12 and 13 as a position correction mechanism for the leading end of an inserted medium.
12 and 13 are operation diagrams. In the figure, 101 is a medium, 102 is a conveyance path, 103 is a feed roller, 104 is a press roller disposed opposite to the feed roller 103, 105 is a shutter, and 106 is this. A position correcting roller 107 disposed between the feed roller 103 and the shutter 105, and a position correcting press roller 107 disposed opposite to the position correcting roller 106.
[0003]
According to such a configuration, as shown in FIG. 12, the leading edge of the medium 101 that has been conveyed through the conveyance path 102 by the feed roller 103 and the press roller 104 to the immediate vicinity of the shutter 105 is brought into contact with the shutter 105 correctly. In addition, as shown in FIG. 13, the press roller 104 is lowered, the position correcting press roller 107 is raised, and the medium 101 is sandwiched between the position correcting rollers 106 and rotationally driven, so that the contact state with the shutter 105 at the front end of the medium is changed. It has been corrected.
[0004]
[Problems to be solved by the invention]
According to such a conventional technology, the feed roller, the press roller disposed opposite to the feed roller, the position correcting roller, and the position correcting press roller disposed opposite to the feed roller have a double structure that requires complicated control. Has problems in structural complexity and manufacturing costs.
[0005]
[Means for Solving the Problems]
Accordingly, the present invention provides a medium transporting device in which a feed roller and a press roller for pressing a medium against the feed roller are vertically opposed to each other, and a lower roller on a side portion of the roller on a rotation shaft of the roller above the roller. A pressing member is provided at a position where it does not interfere so that it can move in the vertical direction. At least the weight of the pressing member is sandwiched between the load applied to the medium and the lower roller, and the medium is moved by driving the lower roller. Accordingly, the position of the front end of the medium is set correctly, and the medium is sandwiched and conveyed by the upper and lower rollers at that position .
[0006]
Furthermore, it has a feed roller and a press roller for press-contacting the medium to it, and it can move up and down to a position where it does not interfere with the lower roller at the side of the roller on the rotation axis of the roller above the roller. pressing a member subjected to the medium at least its own weight of the pressing member, by the load applied to the medium of the pressing member and the lower roller across the medium, to move the media by driving the roller thereunder Thus , the position of the front end of the medium is set correctly , and the medium is sandwiched and conveyed by the upper and lower rollers at that position .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
First Embodiment FIG. 1 is a configuration diagram, FIG. 2 is an explanatory diagram of a main part, and FIG. 3 is an explanatory diagram showing a configuration example of a pressing member.
[0008]
In the figure, reference numeral 1 denotes a medium, 2 denotes a conveyance path, 3 denotes a feed roller, and 4 denotes a press roller disposed so as to face the feed roller 3.
Reference numeral 5 denotes a drive motor for performing the contact / separation operation of the press roller 4 with respect to the feed roller 3, and the position of the press roller 4 in a state where the medium is pressed against the feed roller 3 and the medium indicated by a broken line in FIG. It can be controlled so as to be stationary at P2, and at a position P1 between which the pressing member and the medium described later are sandwiched. This motor may be a stepping motor.
[0009]
Reference numeral 6 denotes a drive motor for rotationally driving the feed roller 3 and the press roller 4 to convey the medium. This motor may also be constituted by a stepping motor.
Reference numeral 7 denotes a shutter, and 8 denotes a drive motor for the shutter.
Reference numeral 9 denotes a medium detection sensor disposed in front of the shutter 7 between the shutter 7 and the feed roller 3, for example, an optical sensor comprising a light receiving element and a light emitting element.
[0010]
Reference numeral 10 denotes a pressing member which is provided on the side of the feed roller 3 by a long hole 12 so as to be movable in a direction perpendicular to the rotation shaft 11, in the vertical direction in the drawing. As shown in the figure, the pressing member 10 is disposed on the side of the feed roller 3, but does not interfere with the press roller 4. Further, the pressing member 10 may be made of any material such as synthetic resin, rubber, metal, etc. The shape of the pressing member 10 is any as long as it has a long hole 12 that matches the diameter of the rotary shaft 11 of the feed roller 3 as shown in FIG. Such a shape may be used.
[0011]
In addition, as shown in FIG. 3B, the shape of the long hole is not the long hole 12, but the shape in which the upper part is opened. It should be noted that the portion in contact with the medium 1 is preferably a curved surface so as not to hinder the conveyance of the medium 1, and the overall thickness is arbitrarily determined by the material and shape so that the weight becomes an appropriate value. Further, as shown in FIG. 3C, the detection surface 10a may be formed in the direction in which the position management sensor is arranged so that position management by a sensor described later can be performed. Furthermore, the whole may be a deformable rubber band shape instead of a fixed shape.
[0012]
Reference numeral 13 denotes a locking tool that prevents the pressing member 10 from moving along the rotating shaft 11.
Reference numeral 14 denotes a position management sensor for the pressing member 10. Whether the medium 1 is in contact with the feed roller 3 by detecting the position of the pressing member 10 based on whether or not the pressing member 10 blocks the optical axis. Whether it is passing can be detected.
[0013]
The operation will be described below with reference to the operation diagram of FIG. 4 and the flowchart of FIG.
SA1 The standby state is set before the operator inserts the medium 1, and as shown in FIG. 4A, in this state, the press roller 4 is not on the conveyance path 2, and the pressing member 10 is under the conveyance path by its own weight. 2 on.
SA2 When the operator inserts the medium 1, as shown in FIG. 4B, the medium 1 is inserted into the conveyance path 2 with the pressing member 10 placed thereon, and the medium detection sensor 9 detects the medium 1.
[0014]
SA3 By detecting the medium 1, as shown in FIG. 4C, the drive motor 5 of the press roller 4 is driven to move the press roller 4 to the position P1 on the conveyance path 2, and the pressing member 10 is placed on the medium. 1 is placed on the press roller 4. As a result, the medium 1 is sandwiched between the pressing member 10 and the press roller 4.
SA4 With the medium 1 on which the pressing member 10 is placed on the press roller 4, the medium 1 is pressed on the press roller 4 by the weight of the pressing member 10 as shown in FIG. 6 is driven to rotate the press roller 4 in the direction of the arrow.
[0015]
SA5 The medium 1 moves with the rotation of the press roller 4 due to the frictional force of the surface of the press roller 4, and stops with the front end of the medium 1 in contact with the shutter 7. This is because the pressing force of the pressing member 10 is only the weight of the pressing member 10 and is very lightweight and the feed force is small. And the direction of the medium 1 can be freely changed by the rotation of the press roller 4, the front end of the medium 1 can be brought into contact with the shutter 7 accurately, and the medium 1 is further fed in this state. Almost no power to act. The driving of the driving motor 6 may be started with the driving motor 5 stopped.
[0016]
The drive motor 6 stops driving when it is rotated for a predetermined number of pulses or for a predetermined time.
SA6 When the drive motor 6 is stopped, as shown in FIG. 4E, the drive motor 5 is driven to move the press roller 4 further to the position P2, and the medium 1 is sandwiched between the feed rollers 3. In addition, the pressing member 10 is also moved by this, the position management sensor 14 of the pressing member 10 is turned on, and the presence of the medium 1 is detected.
[0017]
SA7 By this detection, as shown in FIG. 4 (f), the drive motor 8 is driven to open the shutter 7, and by this opening, the drive motor 8 is stopped and the drive motor 6 is driven to convey the medium 1. To do.
SA8 When the medium 1 passes by conveyance, the pressing member 10 is not supported and descends, the position management sensor 14 is turned OFF, the movement of the medium 1 is detected, the drive motor 6 is stopped, and the drive motor 5 is driven. The press roller 4 is returned to the initial position P0.
[0018]
As described above, according to the present embodiment, the press roller is driven by pressing the medium sandwiched between the press roller by the weight of the pressing member, and a slight feed force is obtained so that the front end of the medium is correct. Position setting can be performed.
Second Embodiment FIG. 6 is a block diagram.
[0019]
The present embodiment is characterized in that, in the first embodiment, a pressing member is provided so as to press the pressing member 10 against the rotating shaft 11 of the feed roller 3. Therefore, other similar parts will be described using the same reference numerals.
In the figure, reference numeral 1 denotes a medium, 2 denotes a conveyance path, 3 denotes a feed roller, and 4 denotes a press roller disposed so as to face the feed roller 3.
[0020]
Reference numeral 5 denotes a drive motor for performing the contact / separation operation of the press roller 4 with respect to the feed roller 3, and the position of the press roller 4 in a state where the medium is pressed against the feed roller 3 and the medium indicated by a broken line in FIG. It can be controlled so as to be stationary at P2, and at a position P1 between which the pressing member and the medium described later are sandwiched. This motor may be a stepping motor.
[0021]
Reference numeral 6 denotes a drive motor for rotationally driving the feed roller 3 and the press roller 4 to convey the medium. This motor may also be constituted by a stepping motor.
Reference numeral 7 denotes a shutter, and 8 denotes a drive motor for the shutter.
Reference numeral 9 denotes a medium detection sensor disposed in front of the shutter 7 between the shutter 7 and the feed roller 3, for example, an optical sensor comprising a light receiving element and a light emitting element.
[0022]
Reference numeral 10 denotes a pressing member, which is provided on the side of the feed roller 3 by a long hole 12 so as to be movable in a direction perpendicular to the rotation shaft 11 and in the vertical direction in the drawing, and will be described in the first embodiment. It is the same as what I did.
Reference numeral 14 denotes a position management sensor for the pressing member 10. It is an optical sensor composed of a light receiving element and a light emitting element, and detects the position of the pressing member 10 by detecting the pressing member 10 to determine whether the medium 1 is in contact with or passes through the feed roller 3. Can be detected.
[0023]
Reference numeral 15 denotes a pressing member. It is a plate-like body made of an elastic body, and its tip is brought into contact with the pressing member 10 so as to press the pressing member 10 against the rotating shaft 11 of the feed roller 3. The material of the pressing member 15 may be any material such as synthetic resin, rubber, metal, etc. The shape of the plate-like body is also arbitrary, and further, the contact member with the pressing member 10 at the tip of the coil spring Such a structure may be used. In short, it is sufficient if the pressing member 10 can be pressed against the rotating shaft 11 of the feed roller 3 with a predetermined pressing force.
[0024]
The operation will be described below with reference to the operation diagram of FIG. 7 and the flowchart of FIG.
However, it is assumed that the lowering force with its own weight is larger than the friction force acting on the rotating shaft 11 by the pressing member 15, that is, the pressing member 10 freely descends when the rotation of the feed roller 3 is stopped.
SB1 A standby state is set before the operator inserts the medium 1, and as shown in FIG. 7A, in this state, the press roller 4 is not on the conveyance path 2, and the pressing member 10 is under the conveyance path 2 due to its own weight. It's above.
[0025]
SB2 When the operator inserts the medium 1, as shown in FIG. 7B, the medium 1 is inserted into the conveyance path 2 with the pressing member 10 placed thereon, and the medium detection sensor 9 detects the medium 1.
SB3 The medium on which the pressing member 10 is placed by driving the driving motor 5 of the press roller 4 to move the press roller 4 to the position P1 on the conveying path 2 as shown in FIG. 1 is placed on the press roller 4. As a result, the medium 1 is sandwiched between the pressing member 10 and the press roller 4.
[0026]
SB4 With the medium 1 with the pressing member 10 placed on the press roller 4, as shown in FIG. 7 (d), the drive motor 6 is driven to rotate the press roller 4 and the feed roller 3. 9, the pressing member 15 presses the pressing member 10 against the rotating shaft 11 of the feed roller 3 so that the pressing member 10 is attached downward by the rotational force of the rotating shaft 11 of the feed roller 3. The medium 1 is pressed onto the press roller 4 by the combination of the urging force and the weight of the pressing member 10.
[0027]
SB5 The medium 1 moves with the rotation of the press roller 4 due to the frictional force of the surface of the press roller 4, and stops with the front end of the medium 1 in contact with the shutter 7. This is because the pressing force of the pressing member 10 is the sum of the weight of the pressing member 10 and the downward biasing force of the pressing member 10 due to the rotational force of the rotating shaft 11 of the feed roller 3. Since it is lightweight and the feed force is small, slip easily occurs between the press roller 4 and the medium 1, and the direction of the medium 1 can be freely changed by the rotation of the press roller 4. The front end can be brought into contact with the shutter 7 accurately, and further, the force for feeding the medium 1 in that state hardly acts. The driving of the driving motor 6 may be started with the driving motor 5 stopped.
[0028]
The drive motor 6 stops driving when it is rotated for a predetermined number of pulses or for a predetermined time.
SB6 When the drive motor 6 is stopped, as shown in FIG. 7E, the drive motor 5 is driven to move the press roller 4 further to P2 and sandwich the medium 1 with the feed roller 3. In addition, the pressing member 10 is also moved by this, the position management sensor 14 of the pressing member 10 is turned on, and the presence of the medium 1 is detected.
[0029]
SB7 By the detection, as shown in FIG. 7 (f), the drive motor 8 is driven to open the shutter 7. By this opening, the drive motor 8 is stopped and the drive motor 6 is driven to convey the medium 1. To do.
SB8 When the medium 1 passes by conveyance, the pressing member 10 is not supported and descends, the position management sensor 14 is turned OFF, the movement of the medium 1 is detected, the drive motor 6 is stopped, and the drive motor 5 is driven. The press roller 4 is returned to the initial position P0.
[0030]
As described above, according to this embodiment, the pressing member 10 is sandwiched between the pressing roller 4 by the urging force for urging the pressing member 10 downward by the rotational force of the rotating shaft 11 of the feed roller 3 and the weight of the pressing member. By pressing the medium 1, a slight feed force can be obtained when the press roller 4 is driven, and the correct position of the front end of the medium can be set.
[0031]
Further, when the medium 1 is discharged as shown in FIG. 10, the pressing member 10 is biased upward by the rotational force of the shaft 11 of the feed roller 3 as shown in FIG. Ten influences can be avoided.
In addition, when the friction load by the pressing member 15 is larger than the own weight of the pressing member 10, the pressing member 10 does not fall by its own weight in the second embodiment. Therefore, in order to set the state shown in FIG. 7A, conditions are set by the rotation of the feed roller 3 in the previous medium processing.
[0032]
For example, if the previous medium is ejected in the inserted direction, the pressing member rises. Therefore, the feed roller may be idled in the insertion direction before the next medium is inserted.
Further, in the case of a type in which the medium is processed by one-way conveyance in which the medium does not return in the insertion direction, it can be realized by idling the feed roller in the insertion direction after the press roller is opened.
[0033]
In each of the above embodiments, the upper side is described as a feed roller and the lower side is described as a press roller. However, the present invention is not limited to this, and the pressing member is not lowered by its own weight, for example, rotating. By moving the pressing member by the rotational friction load of the shaft, it is possible to raise the pressing member using the lower side as a feed roller and the upper side as a press roller.
[0034]
【The invention's effect】
According to the present invention described in detail above, the feed roller and the press roller for press-contacting the medium with the feed roller are opposed to each other in the vertical direction at the side of the roller on the rotation shaft of the roller above the roller of the medium conveying device. Since the pressing member is provided so as to be movable, and the pressing member and the lower roller sandwich the medium so that the weight of the pressing member is applied to the medium. The medium sandwiched between the two is pressed, a slight feed force is obtained when the roller is driven, and the correct position of the front end of the medium can be set.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a first embodiment example. FIG. 2 is a main part explanatory diagram. FIG. 3 is an explanatory diagram showing a configuration example of a pressing member. FIG. 4 is an operation diagram. FIG. 6 is a block diagram showing a second embodiment. FIG. 7 is an operation diagram. FIG. 8 is an operation flowchart. FIG. 9 is a main part detail view. FIG. 10 is an operation diagram. 12] Operation diagram of conventional example [FIG. 13] Operation diagram of conventional example [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Medium 2 Conveyance path 3 Feed roller 4 Press roller 5 Drive motor 6 Drive motor 7 Shutter 8 Drive motor 9 Medium detection sensor 10 Pressing member 11 Rotating shaft 12 Long hole 13 Locking tool 14 Position management sensor 15 Pressing member

Claims (4)

In a medium conveying apparatus in which a feed roller and a press roller for press-contacting a medium to the feed roller are vertically opposed to each other,
A pressing member is provided on the rotating shaft of the upper roller of the roller so as to be movable in the vertical direction at a position where it does not interfere with the lower roller at the side of the roller, and at least the weight of the pressing member is a load applied to the medium. The medium is sandwiched between the lower roller, the medium is moved by driving the lower roller, the position of the front end of the medium is correctly set, and the medium is sandwiched and transported by the upper and lower rollers at that position. A medium conveying apparatus. 2. The medium conveying apparatus according to claim 1, wherein the pressing member is pressed against the rotating shaft of the roller by the pressing member. 2. The medium conveying apparatus according to claim 1, wherein a position management sensor for detecting movement of the pressing member is provided, and the presence or absence of the medium is identified by the position management sensor. It has a feed roller and a press roller for press-contacting the medium to it, and presses against the rotating shaft of the upper roller of these rollers so that it can move in the vertical direction at a position where it does not interfere with the lower roller at the side of the roller. It has a member, at least its own weight over the medium, pressing sandwich the medium by the load and a lower roller acting on the medium member, the medium tip by moving the media by driving the roller of the lower side of the pressing member Is set correctly , and the medium is conveyed by sandwiching the medium between the upper and lower rollers at that position .

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