JPH03185591A - Medium inserting/ejecting device - Google Patents

Abstract

PURPOSE:To provide the medium inserting/ejecting device with also a shutter function for preventing another medium from being inserted into the device during the processing of the current medium in the device in addition to its original medium discharging and dropping function by including an one-way clutch in a medium insertion port discharging roller (discharge belt) and providing the roller with carrying drive force only at the time of rotating the roller in the discharge direction. CONSTITUTION:In the non-attracted state of a solenoid, a pad roller 17 and a belt 6 are abutted with each other with a prescribed pressure based on the restoration force of a spring 70 and the U-shaped groove 9' of an oscillation arm 9 and a link 11 are set up on the right-angled positional relation. Even when the medium 1 is inserted from the external of the insertion port 15 in the arrow 8 direction, the arm 9 can not rotated around a shaft 3 in the arrow 80 direction and the rotation in the arrow 80 direction is locked. Thereby, a discharging/dropping pulley 7, the belt 6 and a pad roller 17 act as the shutter function for preventing the insertion of another medium from the external.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printing medium conveyance device, and particularly to a medium insertion/ejection mechanism such as a batch bookkeeping machine that automatically performs bookkeeping processing continuously.

[Conventional technology]

The medium insertion/ejection mechanism in the prior art is disclosed in Japanese Patent Application Laid-Open No. 57-1
64379, when the roller discharges the medium to the insertion port and another medium is inserted from the insertion port during media processing,
Shutters and shutters to prevent this insertion were operated and installed using a strong electric current. Therefore.

Not only is the mechanism complicated, but if you try to eject and drop the media from the insertion slot with such a mechanism, the distance between the conveyance roller and the insertion slot is long, so the structure makes it impossible for curled media to be ejected and fallen properly from the insertion slot. It becomes.

[Problem to be solved by the invention]

Although the above-mentioned conventional technology is a suitable insertion/ejection mechanism for sucking in the medium from the insertion port and discharging the medium to the insertion port, no consideration is given to the issue of medium ejection and falling from the insertion port, and it cannot be ejected and dropped properly. There was a problem.

The purpose of the present invention is to solve the problems of the prior art, and at the same time, to simplify the mechanism by having the insertion opening ejection falling member also serve as a shutter function to prevent other media from being inserted into the device during media processing. It is in.

[Means to solve the problem]

In order to achieve the above object, in a conveying device having a medium insertion/ejection path, there is a means for ejecting and dropping the medium to the outside of the insertion port communicating with the insertion/ejection path, and a means for releasing and dropping the medium to the outside of the insertion port communicating with the insertion/ejection path, and The apparatus is provided with means for preventing other media from being fed to the apparatus until processing is completed.

[Effect]

The drive force is transmitted to the discharge roller from the 1m feed roller via the belt, and since it has a built-in one-way clutch, it rotates only in the discharge direction, so it does not have the function of taking the medium into the device.

In addition, the discharge roller (discharge belt) can be opened and closed with the discharge roller as the center of rotation, and in the "closed" state,
It has a locking structure with an opening/closing link system so that it does not open easily due to external force6.Therefore, even if a medium is inserted from the outside during processing, it can function as a shutter to prevent this medium from being inserted. .

Furthermore, since the ejection roller (ejection belt) is mounted inside the insertion slot, the distance between the ejection roller (ejection belt) and the insertion slot is short, and the ejection and fall properties of the medium are good. Since the ejection belt (discharge belt) is in an open state, the setting property when inserting the medium and the property of removing the medium are not impaired.

〔Example〕

The operating principle and embodiments of the present invention will be explained below with reference to the drawings.

FIG. 1 is a perspective view of a media insertion and ejection mechanism according to the present invention. FIG. 2, FIG. 3, and FIG. 4 are side views of the medium insertion/ejection mechanism according to the present invention for explaining the arrangement and operation in the feeding device.

This will be explained starting from FIG.

The medium 1 is conveyed while being held between the drive roller 2 and the pressure roller 2'. (!M drive motor and transmission system are not shown) The pressure roller 2' has a structure in which a constant pressure is always applied to the drive roller 2 by a spring 40.

A pulley 4 with a built-in one-way clutch (not shown) and a swinging arm 9 without a built-in one-way clutch are inserted into the shaft 3 of the drive roller 2, and a release drop pulley 7 is inserted into the other end of the swinging arm 9. It is located. The pulley 4 and the discharge drop pulley 7 are connected by a belt 6,
Only the rotation 50 in the discharge direction of the drive roller 2 is transmitted to the discharge drop pulley 7, and the rotation 60 in the suction direction is transmitted to the pulley 4.
Due to the operation of the built-in one-way clutch, the transmission is not transmitted to the release/drop pulley 7, and the release/drop pulley 7 does not rotate.

A pad roller 17 is disposed at a position opposite to the discharge/drop pulley 7, and the medium 1 is sandwiched between the discharge/drop pulley 7 and the pad roller 17, so that the medium 1 can be discharged only when the discharge direction rotates 50. It becomes.

The swinging arm 9 is capable of swinging rotation around the shaft 3, and is attached to the pin 1 of the link 11 fixed to the shaft IO.
1' is inserted into the U groove 9' of the swinging arm 9, and swings about the shaft 3 by sucking the solenoid 14 through the solenoid link 13 to the link 12 fixed to the other end of the shaft 10.

Under normal conditions, the belt 6 is moved to the putt roller 1 by the restoring force of the spring 70 attached to the other end of the link 12.
7 with a predetermined pressure, and is in a closed state.

The solenoid 14 is sucked only when the medium 1 is set or discharged, and the pad roller 17 and the belt 6 are opened.

When the solenoid 14 is in the non-suction state, the pad roller 17 is moved by the restoring force of the spring 70 as shown in FIG.
and the belt 6 are in contact with each other with a predetermined pressure, and at the same time, the U groove 9' of the swing arm 9 and the link 11 are set in a positional relationship that is perpendicular to each other. Even if the swing arm 9 is inserted in the 8 direction, the swing arm 9 cannot swing in the direction of the arrow 80 about the shaft 3, and the swing rotation in this direction is locked.

Therefore, in this state, the discharge falling pulley 7 and the belt 6
, the putt roller 17 functions as a shutter to prevent insertion of a medium from the outside.

Next, the state of suction and discharge of the medium will be explained. By suctioning the solenoid 14, the solenoid link 13.
Link 12. Shaft 10. Link 11. Pin 11'U
The swing arm 9 swings around the shaft 3 through the groove 9', resulting in the state shown in FIG. 3.

In this state, when the medium 1 is inserted from the outside of the insertion port 15 in the direction of the arrow 8, the medium detection sensor 18 detects the medium 1.
By detecting the upper end 1' of the roller 2, a driving force in the suction direction from a motor (not shown) is transmitted to the drive roller 2 and the pressure roller 2', and they start rotating. In this state, the medium 1 is further pushed in the direction of arrow 8, and the drive roller 2
and the pressure roller 2', and are conveyed into the apparatus.

On the other hand, when discharging the medium 1 from inside the device to the insertion port 15 side, the solenoid 14 is sucked prior to the discharging operation, and the swing arm 9 swings about the shaft 3 as described above. The next opening force in the discharge direction from a motor (not shown) is transmitted to the drive roller 2 and the pressure roller 2' to start rotation. As a result, the belt 6 also starts rotating in the discharge direction. After the upper end 1' of the medium 1 whose discharge and feeding has started in the direction of arrow 5 is detected by the medium detection sensor 18', the medium 1 is conveyed by a predetermined amount by the drive roller 2 and the pressure roller 2' to a position where it is not pinched. Stop the discharge feed. In this state, the medium 1 enters a state in which it is not held between rollers, belts, etc. and is ready for extraction. Then, when the detection sensor 19 detects that the medium 1 has been removed, the suction of the solenoid 14 is released.

In this way, the contact between the pad roller 17 and the belt 6 is released prior to the suction and ejection operation of the medium 1, making it easy to insert and set the medium 1 into the insertion port 15 and to remove the medium 1 discharged into the insertion port 15. will not be harmed.

Next, the ejection and fall of the medium 1 into the insertion port 15 will be explained. When the detection sensor 18' detects the upper end 1' of the medium 1 in the operation of discharging the medium 1 from the inside of the device to the insertion port 15@, the suction of the solenoid 14 is released, as shown in FIG. In this way, the medium 1 is held between the belt 6 and the pad roller 17 by the restoring force of the spring 70. At this point, the drive roller 2 and the pressure roller 2' are already rotating in the ejection direction, so as described above, the ejection rotation is also transmitted to the belt 6 via the pulley 4 with a built-in one-way clutch, and the medium 1 is further rotated. It is discharged in the direction of arrow 5.

Then, from the grip between the belt 6 and the pad roller 17, the medium ■
When it comes off, the medium 1 falls to the outside of the insertion slot 15 due to its own weight,
The discharging and dropping operation ends when the detection sensor 19 changes from detecting the presence of the medium 1 to detecting its absence.

〔Effect of the invention〕

As explained above, the present invention incorporates a one-way clutch in the medium insertion opening discharge roller (discharge belt), and has a structure in which the conveyance opening force is applied only when rotating in the discharge direction. In addition to the original function of ejecting and dropping the medium, it also functions as a shutter to prevent other media from being inserted into the apparatus during medium processing, and the mechanism can be simplified.

[Brief explanation of drawings]

FIG. 1 is a perspective view illustrating the operating principle of the medium insertion/ejection mechanism of the present invention. FIG. 2 is a side view of the mechanism for explaining the shutter function of the medium insertion/ejection mechanism of the present invention. FIG. 3 is a side view of the mechanism for explaining the medium insertion and ejection operations in the medium insertion and ejection mechanism of the present invention. FIG. 4 is a side view of the medium insertion/ejection mechanism of the present invention for explaining how the medium ejects and falls from the insertion port. 1... Medium, 2... Drive roller, 2'... Pressure roller, 3... Shaft, 4... Pulley with built-in clutch, 6... Belt, 7... Pulley, 9...
・Swinging arm. lO...shaft, 11/12/13...link,
14...Solenoid 1.15...Insertion port, 16.
... Feeding path, 17... Pat roller, 18.18'
, 19... detection sensor, 40... suppression spring, 70... spring. Figure ■ Figure No. 1 Leap

Claims (1)

[Claims] 1. In a conveyance device having a medium insertion/ejection path, a means for ejecting and dropping the medium to the outside of the insertion port communicating with the insertion/ejection path, and a means for releasing and dropping the medium to the outside of the insertion port communicating with the insertion/ejection path, and a means for releasing and dropping the medium to the outside of the insertion port communicating with the insertion/ejection path, and a means for discharging and dropping the medium to the outside of the insertion port communicating with the insertion/ejection path, and a means for discharging and dropping the medium to the outside until processing of the medium once taken into the device is completed. What is claimed is: 1. A medium insertion/ejection device, comprising: means for preventing the medium from being fed into the device.