JPH0731321Y2 - Media processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to delivery of a medium between transport systems in a medium processing apparatus having a plurality of transport systems.

[Conventional technology]

FIG. 4 is an overall side sectional view showing a conventional medium processing apparatus. Reference numeral 1 denotes a transport path, and a hopper 3 for accumulating and accommodating the medium 2 is provided at the uppermost stream in the transport direction.

Reference numeral 4 denotes a pickup roller, which comes into contact with the uppermost surface of the medium 2 stored in the hopper 3 and rotates to feed the medium 2 stored in the hopper 3 to the transport path 1.

Denoted at 5 is a separation roller, and the opposing rollers are rotating in the same direction as the pickup roller 4, and even when the medium 2 fed out by the pickup roller 4 is double-fed, the separation roller 5 makes the uppermost position. Only one sheet is conveyed on the conveying path 1 and the other sheets are sent back to the hopper 3.

An aligner roller 6 conveys the medium 2 separated and conveyed one by one by the separation roller 5 to the reading unit described later while correcting the skew.

The feed rollers 7a and 7b are located downstream of the aligner roller 6, form a first conveying system together with the aligner roller 6, and are driven at a low speed by a driving means described later.

A reading unit 8 is located between the feed rollers 7a and 7b and reads an image of the medium 2.

The reading unit 8 is composed of a light source 9, an image sensor 10, a lens 11, and the like. The reading unit 8 irradiates the medium 2 conveyed by the feed rollers 7a and 7b with light from the light source 9, and the reflected light causes the lens 11 to pass through. As described above, the image formed on the image sensor 10 is read, and the image written on the medium 2 is read, and the read data is recognized by a recognition unit (not shown).

A reference numeral 12 is provided on the most downstream side of the transport path 1 and is a temporary standby state until the reading is completed by the reading section 8 and the medium 2 transported by the second transport system described later is completed until the recognition of the image is completed. It is a standby unit.

13 is an accept stacker, 14 is a blade, and a temporary standby unit
When the medium 2 waiting in 12 is ejected to the accept stacker 13 based on the recognition result, the blade 14 is switched by a magnet (not shown), and the medium 2 is ejected to the accept stacker 13.

15 is a reject stacker, 16 is a blade, and a temporary standby unit
When ejecting the medium 2 waiting at 12 to the reject stacker 15 based on the recognition result, the blade 16 is switched by a magnet (not shown), and the medium 2 is ejected to the reject stacker 15.

A feed roller 17 is located between the feed roller 7b and the blade 14 and forms an intermediate conveying system.

FIG. 5 is a schematic explanatory view of the drive system of the feed roller 17, and 18 is a pulse motor for driving the aligner roller 6 and the feed rollers 7a, 7b which are the first conveying system via a belt or the like not shown. . Reference numeral 19 is a pulley with a built-in one-way clutch 19a, and 20 is a pulley fixed to the shaft of the pulse motor 18. By connecting shaft 22 with
When 18 rotates, the feed roller 17, which is an intermediate conveyance system, rotates together with the first conveyance system, and the first conveyance system and the intermediate conveyance system are driven by the same drive means.

If the rotation speed of the feed roller 17 due to the driving force of the motor 18 is equal to or higher than the rotation speed generated in the feed roller 17 by the conveyance of the medium 2, the one-way clutch 19a built in the pulley 19 is driven by the motor. It rotates in synchronization with 18.

However, when the rotation speed of the feed roller 17 generated by the conveyance of the medium 2 becomes faster than the rotation speed of the driving force of the motor 18, the driving force of the motor 18 is increased.
The feed roller 17 is not transmitted to the motor 17, but is rotated independently of the motor 18.

23a is a feed roller located downstream of the feed roller 17 in the transport path 1 between the blades 14 and 16, 23b is a feed roller located in the temporary standby section 12, and 23c is a transport path leading to the accept stacker 13 and the reject stacker 15. 1
Is a feed roller located at the discharge port of the feed roller 23a, 23b, and 23c, and a second transport system is constituted by the feed roller 23a, 23b, and 23c. The second transport system is different from the pulse motor 18 for driving the first transport system. It is driven by independent drive means (not shown), and the first transport system and the second transport system can be driven at different speeds.

Reference numeral 24 denotes a sensor which is provided at the entrance of the temporary standby unit 12 and detects the passage of the rear end of the medium 2 to recognize that the medium 2 has been conveyed to the temporary standby unit 12.

The operation of the conventional example will be described below.

The pickup roller 4 is rotated in response to the reading start instruction, and the medium 2 is fed from the hopper 3.

The media 2 delivered from the hopper 3 are separated one by one by the separation roller 5, and are conveyed through the conveyance path 1 while the skew is corrected by the aligner roller 6.

The medium 2 conveyed after the skew is corrected by the aligner roller 6 is read by the image sensor 10 by the image sensor 10 while being conveyed by the feed rollers 7a and 7b.

If there is no preceding medium 2 here, the second
The feed rollers 23a, 23b, and 23c of the feeding system are driven at low speed in synchronization with the feed rollers 6, 7a and 7b of the first feeding system. Here, the feed roller 17 is driven in synchronization with the first transport system as described above, and the medium 2 is transported at a low speed.

When the reading of the image of the medium 2 by the image sensor 10 is completed, the medium 2 is conveyed to the temporary standby unit 12 even if the recognition by a recognition unit (not shown) is not completed.

Here, when a control unit (not shown) calculates and detects from the count of the pulse number of each pulse motor that the rear end of the medium 2 has passed the feed roller 7b and the front end has been conveyed to the position of the feed roller 23a, The second transfer system is driven at a higher speed than the first transfer system.

At this time, the front end of the medium 2 meshes with the feed roller 23a included in the second transport system, and the rear end of the medium 2 meshes with the feed roller 17 which is an intermediate transport system driven together with the first transport system. The feed roller 17 is connected to the pulse motor 18 via a one-way clutch 19a,
Since the second transport system is driven at a higher speed than the first transport system, the first pulse motor 18 is applied to the feed roller 17.
Is not transmitted, the medium 2 is conveyed at high speed by rotating at the same speed as each feed roller of the second conveying system.

As a result, the medium 2 whose reading has been completed is at a high speed in the temporary standby unit.
When it is detected that the rear end of the medium 2 has passed through the sensor 24 after being conveyed to 12, the driving of the feed rollers 23a to 23c is stopped, and the medium 2 is temporarily held in the standby unit until the recognition by the recognition means is completed.
Wait for twelve.

Here, since the first transport system and the second transport system are independent, even when the medium 2 is transported at a high speed by the second transport system, the pulse motor 18 causes the first transport system to move at a low speed. Then, the reading unit 8 of the next medium 2 is read.

At this point, when the unrecognized medium 2 is waiting in the temporary standby unit 12, the leading edge of the next medium 2 is the pulse motor.
It is conveyed to a branch point between the intermediate conveyance system and the second conveyance system driven by 18, that is, a point E before the blade 14 between the feed roller 17 and the feed roller 23a.

When the recognition of the image of the medium 2 waiting in the temporary standby unit 12 is completed, the blade 14 is switched when ejecting the medium 2 to the accept stacker 13 in response to the recognition result, and the blade when ejecting it to the reject stacker 15. 16 is switched and the second transport system is driven in the opposite direction to the above to discharge to the desired stacker.

When it is recognized that the medium 2 is ejected from the temporary standby unit 12, the pulse motor 18 is restarted to drive the first conveyance system and the intermediate conveyance system at low speed, and the second conveyance system is set to the first conveyance system. The medium is driven at a low speed in synchronism with the transport system to restart the transport of the next medium 2 and the reading unit 8 reads it.

Similarly, the rear end of the medium 2 passes through the feed roller 7b,
When the control unit (not shown) calculates and detects that the front end has been conveyed to the position of the feed roller 23a by counting the number of pulses of each pulse motor, the second conveyance system is driven at a higher speed than the first conveyance system. , The medium 2 is temporarily held, the next medium is read, and the like until the reading stop command from the control means is continuously performed.

[Problems to be solved by the device]

However, the above-described conventional medium processing device has the following problems.

That is, since the intermediate transport system is driven by the drive means of the first transport system via the one-way clutch, the length of the medium is l ₁ , and the feed roller which is the end of the first transport system.
If the distance between 7b and the feed roller 23a, which is the tip of the second conveying system, is l ₃ , and the distance between the preceding medium and the medium to be conveyed next is l ₂ , then if l ₁ ≧ l ₃ , then the medium Since the front end reaches the second transfer system when the rear end passes through the first transfer system, it is possible to increase the processing speed by reducing l ₂ , but the medium to be handled is limited. There is a problem.

Further, when using a medium having a length equal to or less than the above-mentioned length, it is necessary to set l ₃ −l ₁ <l ₂ and there is a problem that the interval between continuous media is greatly opened and the processing speed is reduced.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a medium processing device capable of expanding the range of media that can be processed without decreasing the processing speed.

[Means for Solving the Problems]

To achieve this object, the present invention provides a first transport system and a second transport system.
In a medium processing device for transporting a medium by coupling with a transport system of, an intermediate transport system that is located at a connection point between the first transport system and the second transport system and transfers the medium between the transport systems. , Provided in the middle of the path for transmitting the driving force from the first transport system to the intermediate transport system, and when a force for driving the intermediate transport system at a higher speed than that of the first transport system is applied, the first drive system outputs The first one-way clutch that cuts off the driving force of the second feeding system and the one-way clutch that is provided in the middle of the path for transmitting the driving force from the second feeding system to the intermediate feeding system, and tries to drive the intermediate feeding system at a higher speed than the second feeding system. When a force is applied, the second one-way clutch that cuts off the driving force from the second drive system, and when the medium is transported in the first transport system, the first transport system is driven at a low speed and is transported. The leading edge of the medium has reached the intermediate transport system, and the trailing edge has passed the first transport system. In point, those having a control unit for driving the second transport system at a high speed.

[Action]

According to the present invention having the above-described configuration, the first transport system located upstream in the medium transport direction among the transport systems adjacent to each other with the intermediate transport system interposed therebetween is driven at a low speed to transport the medium at a low speed. Processing is performed by the processing unit provided in the first transport system.

Then, the second transport system located downstream is driven at high speed or in the reverse direction to transport the medium processed by the first transport system, and the processing section provided in the second transport system. Perform processing.

Here, the intermediate transport system receives the driving force from each of the first transport system and the second transport system, but the intermediate transport system receives the driving force from the first transport system to the intermediate transport system in the middle of the route. 1
The one-way clutch is provided, and the second one-way clutch is provided in the middle of the route for transmitting the driving force from the second carrying system to the intermediate carrying system, so that the first carrying system is carried at a low speed, When the rear end of the processed medium passes through the first transport system and the second transport system is driven at high speed when the front end of the medium reaches the intermediate transport system, the intermediate transport system causes the second transport system to move. It rotates at high speed in synchronization with the system, and does not receive the driving force of the first transport system.

Therefore, according to this, when the front end of the medium reaches the intermediate transfer system and the rear end passes through the first transfer system, the intermediate transfer system can be synchronized with the downstream second transfer system. Even when the length of the medium is set shorter than the distance between the rear end of the first transport system and the front end of the second transport system, the minimum distance is maintained without widening the distance between the continuously transported media. It is possible to transport the medium by.

Examples Examples will be described below with reference to the drawings.

FIG. 1 is an explanatory view of essential parts showing an embodiment of the present invention, and FIG. 2 is an overall side sectional view of a medium processing device in this embodiment.
The same parts as the conventional ones are designated by the same reference numerals, and detailed description thereof will be omitted.

27 is a feed roller which is an intermediate conveyance system located between the feed roller 7b located at the end of the first conveyance system and the feed roller 23a located at the tip of the second conveyance system, and 28 is the first
The feed roller 27 through the one-way clutch 29 of
A first pulley 30 fixed coaxially with the feed roller 27 and the first pulley 30 through a second one-way clutch 31.
2 is a second pulley fixed coaxially with the pulley 28 of FIG.

Reference numeral 32 is a first pulse motor that drives a first conveying system including the aligner roller 6 and the feed rollers 7a and 7b together with the first pulley 28 via the belt 33.

Reference numeral 34 is a second pulse motor that drives a second conveyor system including feed rollers 23a, 23b and 23c together with the second pulley 30 via a belt 35.

Here, the feed roller 27 is connected to the first pulse motor 32 and the second pulse motor 32 via the one-way clutch as described above.
Since the first pulse motor 32 rotates faster than the second pulse motor 34 in the forward rotation direction of the feed roller 27 and the second pulse motor 34, When it rotates in the reverse direction, it receives the driving force of the first pulse motor 32 and rotates in synchronization with the first transport system, and the second pulse motor 34 turns the first pulse motor 32.
When it rotates faster, it receives the driving force of the second pulse motor 34 and rotates in synchronization with the second transport system. The first transport system and the second transport system respectively have the first It can be driven independently by the pulse motor 32 and the second pulse motor 34.

The operation of this embodiment will be described below with reference to the flowchart of FIG.

In response to a reading start instruction, the pickup roller 4 rotates and the medium 2 is fed from the hopper 3 (SA1).

The medium 2 fed from the hopper 3 is separated one by one by the separation roller 5 (SA2), and the first pulse motor 32
To drive the first transfer system at low speed (SA3). As a result, the medium 2 is conveyed along the conveying path 1 while the skew is corrected by the aligner roller 6 (SA4).

The medium 2 that has been skew-corrected and conveyed by the aligner roller 6 is conveyed at a low speed in the reading unit 8 by the feed rollers 7a and 7b (SA5), and the image is read by the image sensor 10 (SA6).

If there is no preceding medium 2 here, the second
The pulse motor 34 of the second transport system is activated to move the feed rollers 23a, 23b and 23c of the second transport system to the feed rollers 6 of the first transport system.
Drive at low speed in synchronization with 7a and 7b (SA7). Here, the feed roller 27 is driven in synchronism with the first transport system and the second transport system, so that the medium 2 is transported at a low speed (SA8).

When the image sensor 10 finishes reading the image on the medium 2 (SA9), the image is conveyed to the temporary standby unit 12 even if the recognition by the recognition unit (not shown) is not completed.

At this time, the control unit (not shown) detects that the rear end of the medium 2 has passed the feed roller 7b and the front end has been conveyed to the position of the feed roller 27 by calculating from the pulse number of each pulse motor ( SA10), second pulse motor
34 is skipped at high speed, and the second transfer system is driven at higher speed than the first transfer system (SA11).

When the second transport system is driven faster than the first transport system, the driving force of the first pulse motor 32 is not transmitted to the feed roller 27, which is the intermediate transport system, and the second pulse motor 34 drives the second Will be driven in synchronization with the carrier system (SA1
2). As a result, the medium 2 whose reading has been completed is conveyed to the temporary standby unit 12 at high speed, and when it is detected that the rear end of the medium 2 has passed the sensor 24 (SA13), the second pulse motor 34
Is stopped, whereby the drive of the feed rollers 23a to 23b is stopped, and the medium 2 waits in the temporary standby unit 12 until the recognition by the recognition means is completed (SA14).

Here, since the first transport system and the second transport system are independent, even when the medium 2 is transported at a high speed by the second transport system, the first pulse motor 32 causes the first transport system to transport the first transport system. The system is driven at a low speed to read the next medium 2 in the reading unit 8 (SA15), and when the preceding medium 2 is conveyed to the temporary standby unit 12, the leading end of the next medium 2 becomes the blade 14. When it is conveyed to the point E between the feed rollers 27 (SA16), the first pulse motor 32 is stopped and the driving of the first conveyance system is stopped (SA17).

When the recognition of the image of the preceding medium 2 waiting in the temporary standby section 12 is completed (SA18), when the medium 2 is discharged to the accept stacker 13 in response to the recognition result, the blade is used.
When switching to 14 and discharging to the reject stacker 15, the blade 16 is switched to rotate the second pulse motor 34 in the opposite direction to discharge to a desired stacker (SA19).

Here, even if the second pulse motor 34 rotates in the reverse direction, its driving force is not transmitted to the feed roller 27, and the medium 2 read next may run in the reverse direction even when the medium 2 reaches the feed roller 27. There is nothing to do.

When it is recognized that the preceding medium 2 is discharged to any of the stackers (SA20), the first pulse motor 32 is restarted to drive the first transport system at low speed (SA21),
The second pulse motor 34 is rotated in the forward direction, the second transport system is driven at a low speed in synchronization with the first transport system to transport the next medium 2 (SA22), and the reading unit 8 resumes reading. To do.

Similarly, the rear end of the medium 2 passes through the feed roller 7,
When the control unit (not shown) calculates and detects that the front end has been conveyed to at least the position of the feed roller 27 by counting the number of pulses of each pulse motor, the second conveyance system is driven at a higher speed than the first conveyance system. Let's temporarily wait for medium 2,
The reading of the next medium is continuously performed until a reading stop command is issued from the control means.

In the above-described embodiment, the intermediate conveying system is one feed roller, but it can be applied to a structure using a plurality of rollers or belts.

[Effect of device]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, in a medium processing apparatus for connecting a first transfer system and a second transfer system to transfer a medium, a connection point between the first transfer system and the second transfer system. Located in
It is provided in the middle of the intermediate transport system that transfers the medium between the transport systems and the route that transmits the driving force from the first transport system to the intermediate transport system, and the intermediate transport system should be driven at a higher speed than the first transport system. The first one-way clutch that cuts off the driving force from the first drive system and the intermediate transfer system that is provided in the middle of the route for transmitting the driving force from the second transfer system to the intermediate transfer system. The second one-way clutch that cuts off the driving force from the second drive system when a force that drives the sheet at a higher speed than the second transport system is applied, and the first one-way clutch when the medium is transported in the first transport system. A control unit that drives the first transport system at a low speed, drives the second transport system at a high speed when the front end of the medium to be transported reaches the intermediate transport system and the rear end passes through the first transport system. With the first transfer system located on the upstream side of the intermediate transfer system. The rear end of the medium conveyed at a speed first
When the second transport system located on the downstream side is driven at a high speed at the time when the second transport system is passed, the intermediate transport system rotates at a high speed in synchronization with the second transport system, and the drive from the first transport system is performed. You will no longer receive power.

Therefore, according to this, when the front end of the medium reaches the intermediate conveyance system and the rear end passes through the first conveyance system, the intermediate conveyance system can be synchronized with the second conveyance system. Even when the length is made shorter than the distance between the rear end of the first conveying system and the front end of the second conveying system, the medium is conveyed at the minimum distance without expanding the distance between the continuously conveyed media. It has the effect that it can be transported.

[Brief description of drawings]

FIG. 1 is an explanatory view of essential parts showing an embodiment of the present invention, FIG. 2 is an overall side sectional view of a medium processing apparatus using this embodiment, and FIG. 3 is a flow chart showing the operation of this embodiment. FIG. 4 is an overall side sectional view of a medium processing device showing a conventional example, and FIG. 5 is an explanatory view of a main part of FIG. 27 …… Feed roller 29 …… First one-way clutch 31 …… Second one-way clutch 32 …… First pulse motor 34 …… Second pulse motor

Claims (1)

[Scope of utility model registration request] 1. A medium processing apparatus for transporting a medium by connecting a first transport system and a second transport system, wherein the medium processing device is located at a connection point between the first transport system and the second transport system. It is provided in the middle of the intermediate transfer system that transfers the medium between the transfer systems and the path that transmits the driving force from the first transfer system to the intermediate transfer system, and the intermediate transfer system should be driven at a higher speed than the first transfer system. When a force to be applied is applied, the first one-way clutch that cuts off the driving force from the first driving system and the intermediate conveying system that is provided in the middle of the path for transmitting the driving force from the second conveying system to the intermediate conveying system are provided. The second one-way clutch that cuts off the driving force from the second drive system when a force to drive the sheet at a higher speed than the second transport system is applied, and when the medium is transported through the first transport system, 1 Transport system is driven at low speed, and the leading edge of the transported medium reaches the intermediate transport system. The medium processing apparatus further comprises a controller that drives the second transport system at a high speed when the rear end passes through the first transport system.