JPH0328033Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a medium conveyance mechanism for conveying a medium such as a bankbook or ticket to a printing unit in an automatic bookkeeping machine or the like.

[Conventional technology]

A media conveyance mechanism built into an automatic bookkeeping machine, etc. usually uses rollers and an endless conveyor belt that constitute a conveyance path to sandwich media such as passbooks or slips from above and below.
In this state, the medium is conveyed by driving the rollers and the conveyor belt.
When the medium is inserted diagonally with respect to the conveyance path, if the medium is conveyed as it is to the printing section, the printing section will print diagonally on the medium.

Therefore, in order to prevent such oblique printing, a medium conveyance mechanism has been considered that is provided with width adjustment means for making the medium parallel to the conveyance path.

FIG. 2 is a schematic side view of a conventional medium transport mechanism having such a width adjustment means, and FIG. 3 is a diagram showing the width adjustment means, which is a plan view and a front view.

In FIG. 2, 1 is an endless lower conveyor belt, 2 is an endless upper conveyor belt, 3 is a drive roller, 4 is a drive motor, and 5
a to 5c are lower rollers, 6a to 6c are upper rollers, and the lower rollers 5a to 5c and the upper roller 6a
~6c are arranged vertically to face each other and are in contact with each other, and are connected to the drive roller 3 and the lower rollers 5a~5.
The lower conveyor belt 1 is supported around c, and the upper conveyor belt 2 is movably wound around the upper rollers 6a to 6c.

Note that the lower conveyor belt 1 has two parts as shown in FIG.
Two upper conveyor belts 2 are also arranged correspondingly.

Reference numeral 7 denotes a clamp lever that rotates around a support shaft 8, and the upper roller 6a is supported at one end of this clamp lever 7.

A solenoid 9 is a power source for rotating the clamp lever 7.

On the other hand, in FIG. 3, reference numeral 10 denotes a guide plate, and this guide plate 10 is provided with a hole having a shape corresponding to the lower conveyor belt 1. By placing the lower conveyor belt 1 in this hole, the guide plate 10 The upper surface of the lower conveyor belt 1 is made to be substantially flush with the contact surface with the upper conveyor belt 2.

11 is a positioning plate provided on one side of the guide plate 10, and a positioning plate 11 is provided on one side of the guide plate 10, and a positioning plate 11 is provided on one side of the guide plate 10.
is parallel to.

Reference numeral 12 denotes a width adjustment plate movably arranged on the other side of the guide plate 10 so as to face the positioning plate 11. These 12 to 15 parts constitute a width adjusting means.

Note that the width shifting plate 12 is connected to the upper roller 6 shown in FIG.
It is located on the side between a and 6b.

16 is a medium such as a passbook or a ticket.

In this configuration, the lower conveyor belt 1 and the upper conveyor belt 2 are normally in contact between the lower rollers 5a, 5b, 5c and the upper rollers 6a, 6b, 6c, and in this state the medium 16 is transferred between the lower conveyor belt 1 and the upper conveyor belt. By rotating the drive roller 3 held by the belt 2 and rotated by the drive motor 4, the lower conveyor belt 1 and the upper conveyor belt 2 run to convey the medium 16. At this time, the width adjusting means shown in FIG. The medium 16 is stopped at the position , and width adjustment is performed as follows.

That is, when the medium 16 stops at a position between the width shifting plate 12 and the positioning plate 11, the solenoid 9 performs a suction operation, and the clamp lever 7 rotates upward about the support shaft 8. As a result, the upper roller 6a
The upper conveyor belt 2 is lifted from the position shown by the solid line to the position shown by the broken line in FIG. Freed from power and in a state of freedom.

When the medium 16 becomes free in this way, the solenoid 15 performs a suction operation, and the arm 14 rotates around the fulcrum 13 to push the width adjusting plate 12 in the direction of arrow A as shown in FIG. The moving plate 12 moves from the position shown by the broken line to the position shown by the solid line to press the medium 16 against the positioning plate 11.

As a result, as shown in FIG.
6 is corrected to be parallel to the conveyance path as shown in the figure.

After that, the solenoid 15 is restored and the width adjustment plate 1 is restored.
2 returns to the original position indicated by the dotted line, the solenoid 9 is also restored, and the clamp lever 7 rotates in the opposite direction, causing the upper conveyor belt 2 to contact the lower conveyor belt 1 and the medium 16 to be moved again. When the medium 16 is clamped and the drive roller 3 is rotated by the drive motor 4, the lower conveyance belt 1 and the upper conveyance belt 2 run to convey the medium 16 toward a printing section (not shown).

[Problem that the invention attempts to solve]

However, in such a conventional medium transport mechanism, when the medium 16 is pressed against the positioning plate 11 by the width adjustment plate 12 during the width adjustment operation described above,
The medium 16 at that time, especially the thin medium 16 such as a cut sheet
In this case, as shown in FIG. 3, the center part floats up from the guide plate 10 and bends, so when the width shifting plate 12 returns to the position indicated by the broken line in FIG. As a result, there was a problem in that it was not possible to accurately adjust the width of the medium 16 so that it became parallel to the conveyance path.

The present invention was developed to solve these problems, and the purpose is to realize a media transport mechanism that can accurately align the media so that it is parallel to the transport path. It is something.

[Means for solving problems]

To achieve this objective, the present invention includes a lower conveyor belt supported by a plurality of rollers, and a medium sandwiched between the lower conveyor belt and the lower conveyor belt, which is supported by a plurality of rollers in contact with the lower conveyor belt. The upper conveyor belt that is conveyed by the upper conveyor belt and the lower conveyor belt that comes into contact with the upper conveyor belt are arranged on the lower conveyor belt side so that the contact surface and the upper surface of the lower conveyor belt are almost the same plane, and the belt is positioned parallel to the lower conveyor belt on one side. a guide plate having a plate, a rotatable clamp lever having one end supporting an arbitrary roller supporting the upper conveyor belt, and a part of the upper conveyor belt that is in contact with the lower conveyor belt from the lower conveyor belt. A medium comprising: a power source that rotates the clamp lever so as to separate the clamp lever; and a width adjusting means that presses the medium against the positioning plate to perform width adjustment when the upper conveyor belt is separated from the lower conveyor belt. In the conveyance mechanism, a friction lever that rotates integrally with the clamp lever is provided coaxially with the clamp lever, and a friction member is attached to the friction lever to press the medium onto the guide plate when the medium is width-aligned. It is characterized by

[Effect]

According to the above-mentioned means, when the clamp lever is rotated by the solenoid to lift the upper conveyor belt, the friction lever is rotated together with the clamp lever, and the medium is guided by the friction member attached to the friction lever. The medium is pressed onto the plate, and in this state, the medium can be pressed against the positioning plate by the width adjustment plate of the width adjustment means to perform width adjustment, so that accurate width adjustment of the medium is possible.

〔Example〕

Examples will be described below with reference to the drawings.

FIG. 1 is a schematic side view showing an embodiment of a medium conveyance mechanism according to the present invention, in which 1 is a lower conveyor belt, 2 is an upper conveyor belt, 3 is a drive roller, 4 is a lower conveyor belt, 2 is an upper conveyor belt, 3 is a drive roller,
is the drive motor, 5a to 5c are the lower rollers, and 6a to 5c are the lower rollers.
6c are the upper rollers, which are the same as those in FIG.

A clamp lever 7 supports the upper roller 6a at one end, and the other end of the clamp lever 7 is attached to a support shaft 8 located above the upper conveyor belt 2.

A solenoid 9 rotates the clamp lever 7.

Reference numeral 17 denotes a friction lever. A cushion member 18 such as a sponge is attached to one end of the friction lever 17, and the other end is connected to the support shaft 8.
is installed on. That is, this friction lever 17 is provided coaxially with the clamp lever 7, and the support shaft 8 is integrated with the friction lever 17.
It is designed to rotate around the center.

It should be noted that this medium conveyance mechanism also has a width adjustment means shown in FIG. 3, as in the prior art.

Next, the operation of this embodiment will be explained.

The lower conveyor belt 1 and the upper conveyor belt 2 usually have lower rollers 5a, 5b, 5 as shown in FIG.
c and the upper rollers 6a, 6b, and 6c, and at this time, the friction lever 17 is retracted upward together with the cushion member 18.
In this state, lower conveyor belt 1 and upper conveyor belt 2
Even if the medium 16 is held between the friction lever 17 and the cushion member 1, and the medium 16 is conveyed by the drive motor 4 and the drive roller 3 running both conveyor belts 1 and 2, the friction lever 17 and the cushion member 1
8 does not interfere with this conveyance.

During width adjustment, the medium 16 is stopped at a position between the width adjustment plate 12 and the positioning plate 11 shown in FIG.
The solenoid 9 performs a suction operation, and the clamp lever 7 rotates upward about the support shaft 8. As a result, the upper conveyor belt 2 is lifted up via the upper roller 6a, and the upper conveyor belt 2 between the upper rollers 6a and 6b is separated from the lower conveyor belt 1 as shown in FIG. The medium 16 is released from the clamping force by the clamp lever 2 in the same way as in the conventional case, but at this time, the friction lever 17 rotates downward about the support shaft 8 together with the clamp lever 7, and A cushion member 18 presses the central portion of the medium 16 with an appropriate force onto the guide plate 10 shown in FIG.

In this state, the solenoid 15 performs a suction operation, and the arm 14 rotates around the fulcrum 13 to push the width shifting plate 12 in the direction of arrow A shown in FIG. The medium 16 is moved from the position shown by the solid line to the position shown by the solid line, and the medium 16 is pressed against the positioning plate 11.

At this time, the medium 16 is suppressed by the cushion member 18, but since the cushion member 18 is elastic and its suppressing force is weak, the medium 16 can be reliably pressed against the positioning plate 11 just by applying an appropriate frictional force. It will be done.

As a result, as shown in FIG.
As shown in the figure, it is corrected to be parallel to the conveyance path.

After that, the solenoid 15 is restored and the width adjustment plate 1 is restored.
2 returns to its original position, but since the medium 16 is still held down by the cushion member 18 at this time, the medium 16 does not rebound due to its own elasticity.

When the width shifting plate 12 returns to its original position, the solenoid 9 is restored and the clamp lever 7 rotates about the support shaft 8 in the opposite direction, thereby causing the upper conveyor belt 2 to move towards the lower conveyor belt 1. , the medium 16 is again held between the conveyor belts 1 and 2, and the cushion member 18 is retracted upward together with the friction lever 17 and separated from the medium 16, and the conveyance of the medium 16 for printing is stopped. becomes possible.

[Effect of idea]

As explained above, in the present invention, a friction lever is provided coaxially with the clamp lever, a cushion member is attached to this friction lever, and the medium is held down by this cushion member when the medium is width-aligned. Since the width adjustment is performed by applying a frictional force of , there is an effect that accurate width adjustment can be performed without the medium bouncing back as in the conventional method.

Additionally, since the friction lever rotates together with the clamp lever that separates the upper conveyor belt from the lower conveyor belt, it has the effect of being able to apply frictional force to the medium with an extremely simple mechanism. be.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing an embodiment of a medium transport mechanism according to the present invention, FIG. 2 is a schematic side view of a conventional medium transport mechanism, and FIG. 3 is a diagram showing width adjusting means.
The same figure is a plan view, the same figure is a front view, and FIG. 4 is a plan view showing a state in which the medium is aligned. 1: Lower conveyor belt, 2: Upper conveyor belt,
3: Drive roller, 4: Drive motor, 5a to 5c:
Lower roller, 6a-6c: Upper roller, 7: Clamp lever, 8: Support shaft, 9: Solenoid, 10:
Guide plate, 11: Positioning plate, 12: Width shifting plate,
13: Fulcrum, 14: Arm, 15: Solenoid,
16: Medium, 17: Friction lever, 18:
cushion parts.

Claims (1)

[Claims for Utility Model Registration] A lower conveyor belt supported by a plurality of rollers; A medium is conveyed while being held between the lower conveyor belt and the lower conveyor belt, which is supported by a plurality of rollers so as to be in contact with the lower conveyor belt. The upper conveyor belt is arranged on the lower conveyor belt side so that the contact surface and the upper surface of the lower conveyor belt that contacts the upper conveyor belt are substantially the same plane, and has a positioning plate parallel to the lower conveyor belt on one side. a guide plate; a rotatable clamp lever having one end supporting an arbitrary roller supporting the upper conveyor belt; and a clamp lever configured to separate a portion of the upper conveyor belt in contact with the lower conveyor belt from the lower conveyor belt. A medium conveying mechanism comprising: a power source for rotating the clamp lever; and a width shifting means for pressing the medium against the positioning plate and shifting the medium when the upper conveying belt is separated from the lower conveying belt. , a friction lever that rotates together with the clamp lever is provided coaxially with the clamp lever, and a friction member is attached to the friction lever to press the medium onto the guide plate when the medium is width-aligned. media transport mechanism.