JPH03227848A - Speed control device for paper feed motor in option sorter - Google Patents

Abstract

PURPOSE:To provide usability for a general purpose in an option sorter so as to connect it to a plurality of different kinds of external equipments by providing constitution such that a rotational speed of a paper feed motor is controlled to variably set a paper form feed speed of paper feed rollers in accordance with a speed of carrying out a paper form. CONSTITUTION:When a paper form 1 is supplied to come from a paper output part (a) of an external equipment A to a paper feed part (b) of an option sorter B, a paper form carrying speed S1 from the paper output part (a) is detected by a carrying speed detecting part 6 before this paper form 1 is fed to paper feed rollers 3. In a speed control part 18, a rotational speed of a paper feed motor 4 is controlled in accordance with the detected paper form carrying speed S1 to set a paper form feed speed S2 of the paper feed roller 3, driven by the paper feed motor 4, to a speed corresponding to the paper form carrying speed S1. Accordingly, the option sorter can be connected to a plurality of different kinds of external equipments, and a product cost is decreased by improving productivity with no design/manufacture required in production of the option sorter for each kind of the external equipment A.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is based on PPC (Plain Paper Co.
pier: old copying machine) and L B P (Lase
It is connected to an external device such as r Beam Pr1nter Nilasa Blink), and is connected to an optional soak for sorting and distributing paper output from the paper output section of the external device. The present invention relates to a technique for controlling the speed of a paper feed motor in a paper feed section of an optional sorter in correspondence with the paper delivery speed of each external device in order to provide versatility to the device.

<Prior Art> So far, a versatile option soak has not been released.

Conventional optional sorters are designed and manufactured exclusively for external devices such as PPCs and LBPs, and are not versatile enough to handle multiple types of external devices of different models. There wasn't.

<Problem to be solved by the invention> An optional sorter that can be connected to an external device of a certain model is
The rotation speed of the paper feed motor in the paper feed section is set to a constant rotation speed that corresponds to the paper output speed of the external device of that model, and the optional sorter that can be connected to the external 4f12m of other models is also The rotation speed of the paper feed motor is set to a constant rotation speed that corresponds to the paper feed speed of the external device of the model, and the paper feed speed differs depending on the model of the external device, so the paper feed speed is set for each optional sorter. The rotation speed of the motor is slow. There are four kinds of external devices with paper delivery speeds ranging from 10 sheets/min to about 60 sheets/min.

Therefore, a certain optional sorter can only be connected to an external device of the corresponding model, and an external a2 of another model
It is not possible to connect to 8.

In this way, in the past, a dedicated optional sorter was installed and manufactured for each model of external machine 2-, and a wide variety of 1-
As a result, overall productivity was low and product costs were high.

The present invention was devised in view of the above circumstances, and an object of the present invention is to provide versatility to an optional sorter by modifying the speed control piece of the paper feed motor of the paper feeding section in the optional sorter. .

<Means for Solving the Problems> In order to achieve the above object, the present invention has the following configuration.

In other words, the speed control of the paper feed motor in the optional sorter of the present invention j! - The device includes a paper feed roller that conveys the paper that is carried out from the paper output section of the external MJI device and co-fed to the paper feed section, and a paper feed roller that drives this paper feed roller. ni1: a discharge speed detection section located above the paper feed roller to detect the paper discharge speed from the paper output section; and a paper feed roller configured to control the rotation speed of the paper feed motor. The apparatus includes a speed control section that varies the speed according to the detected paper discharge speed.

<Effect> The effects of the above configuration of the present invention are as follows.

When paper is supplied from the paper output unit of the external device to the paper feed unit (then, before the paper is sent to the paper feed roller, the output speed detection unit detects the paper output speed from the paper output unit. , the speed control unit controls the rotation speed of the paper feed motor according to the detected paper delivery speed, and sets the paper feed speed of the paper feed [1-ra] driven by the paper feed motor to a speed corresponding to the paper delivery speed. .

<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a schematic diagram of a paper feeding section of an optional sorter and a paper output section of an external device.

A paper output section a for external equipment such as an RPC spear or a BP is provided with a pair of upper and lower paper discharge rollers 2 facing each other for discharging a copy or printed paper 1. When the external device A is a PPC, the paper discharge port 2 also serves as a fixing roller for fixing the image. The paper discharge speed S by the paper discharge roller 2 differs depending on the model of the external III device.

In the paper feed section of optional sorter B, there is paper that has been delivered from paper output section a! Paper feed roller 3 that is in contact with the upper and lower sides to feed the paper to the multi-stage sorting tray that moves up and down.
is provided, and this paper feed roller 3 is interlocked and connected to a paper feed motor 4 via a transmission heald 5.

The paper feed section is provided with a pair of upper and lower thick low pressure rollers 7 that are in contact with each other on the upper side of the paper feed roller 3. This low-pressure roller 7 is rotated by the paper l sent out by the paper ejection roller 2, and the driving source for its rotation is the rotational force of the paper ejection roller 2.

FIG. 2 is a perspective view showing the mechanical configuration of the unloading speed detection section 6;
FIG. 3 is a circuit diagram showing the electrical configuration.

As shown in FIG. 2, the rotation shaft 7 of one low pressure roller
An encoder circle Fi8 is fixed to the end of a, in which a large number of slots 718a of equal width are formed evenly spaced around the entire circumference.
A part of the encoder circle Fi8 is inserted into the gap 9a of the photo sensor (photo ink club) 9. In the photosensor 9, a light emitting element (light emitting diode) 10 and a light receiving element (phototransistor) II face each other with a gap 9a in between, as shown in FIG.

As shown in FIG. 3, the anode of the light emitting element 10 is connected to the DC power supply Vcc via the current limiting resistor 12, and the cathode is grounded. The collector of the light receiving element 11 is connected to a DC power supply Vcc via a current limiting resistor 13, and the emitter is grounded. A positive terminal of a charging/discharging capacitor 14 is connected to a connection point between the current limiting resistor 13 and the collector, and its negative terminal is grounded. The terminal of the switching element (transistor) 16 is connected to the above connection point via the bias resistor 18 15, and the switching element 16
The collector of is connected to the DC power supply Vc via a pull-up resistor 17.
The emitter is connected to C and to the human-powered boat of microcomputer 18 as a speed control section, and the emitter is grounded. Note that in FIG.
"Speed control section" is described.

The output voltage V of the switching element 16 when the light receiving element 11 is turned on. The rising edge of 0□ becomes steep, and when the light receiving element 11 is turned off, the output voltage becomes ■. The capacitance of the charging/discharging capacitor 14 is set to be sufficiently small so that Uf has a steep fall.

The output port of the microcomputer 18 is the paper feeder 7-
It is connected to a motor driver 19 that drives the motor 4 and varies its rotational speed.

The microcomputer 18 serving as a speed control section determines, based on the paper discharging speed S detected by the discharging speed detecting section 6,
The paper feed speed S2 by the paper feed roller 3 is the paper discharge speed S
The motor driver 19 is configured to send a speed control signal Dn to the motor driver 19 to cause the motor to lose its position.

Next, let's talk about the paper feed motor i! of this embodiment. The operation of the temperature control device is shown in the waveform diagram of the output voltages v0 and 7 in Figure 4(a) and in Figure 5.
This will be explained with reference to the flowchart shown in the figure.

When the main power of option sorter B is turned on, the microcomputer 18 executes an initial process in step S1, which is a routine for checking whether there is an abnormality in each part of the device, and in step S2, the microcomputer 18 executes an initial process, which is a routine for checking whether there is an abnormality in each part of the device, and in step S2, the interrupt count counter TIC and start Initialize the flag STF, reset the timer, and enable interrupts in step S3.
1nLerrupt) L, wait for the start flag STF to be set to 1 in step S4.

The paper 1 carried out from the paper output section a by the rotation of the paper discharge roller 2 of the external device A is supplied to the paper feed section of the optional sorter B, and the paper 1 pushed by the rotational force of the paper discharge roller 2 is The low pressure roller 7 in the unloading speed detection section 6 is rotated. The rotational speed of the low-pressure roller rough is proportional to the paper discharge speed S1 by the paper discharge roller 2. The encoder disk 8 rotates with the rotation of the low pressure roller rough, and its slit 8a interrupts the optical path from the light emitting element P10 to the light receiving element 11 in the photosensor 9.

When the slit 8a is on the optical path, the light-receiving element 11 is turned on, rapidly discharging the charging/discharging capacitor 14, so the switching element 16 is turned off, and the output voltage . u7 rises steeply as shown in FIG. 4(a). The microcomputer 18 outputs this output voltage ■.

. In response to the rising edge of 7, the main routine shifts to the interrupt processing routine.

That is, in step S5, other interrupts are disabled (9Jll:, DI: Disable
Interrupt), and in step S6, it is determined whether the interrupt number counter 'rIC exceeds "01".Since it is "0" at the initial rising stage of the output voltage V.ut, steps S7 and S8 are skipped. Then, the process proceeds to step S9, where the interrupt count counter TIC
is counted up by +1 (TIC←TIC+
1) and reset the timer. The timer starts counting time from the initial value at the moment of reset.

After resetting the timer, step S of the main routine
3, the interrupt is enabled again, and the process waits for the start flag STF to be set to l'' in step S4.

In the above operation, the timer readout in step S7 is skipped for the first output voltage V. 1° standing-F
Even if Tie 7 is read in the interrupt processing based on the gap, the count time is used to calculate the paper delivery speed S1.
This is because two makes no sense.

While waiting for the determination in step S4, when the light shielding part between the slits 8a of the encoder disk 8 comes on the optical path, the light receiving element +1
is turned off, and the switching element 71G is turned on to quickly charge the charging/discharging capacitor I4. :, and the collector potential drops to the ground level, resulting in an output voltage of V. UT falls at C, steep (see Figure 4 (, 1)). And pickpocket again.

When the light 8a comes on the optical path, the switching element 16 turns OFF.
Then, the output voltage V. 0-cho stands up, micro-go 1
The computer 18 again shifts from the main routine to the interrupt processing routine.

In step S5, other interrupts are disabled, and in step S6, it is determined whether the interrupt count counter TIC exceeds "O".
Since I C = 1, the process advances to step S7 to read out the timer and store the count time T1 in the memory.
(RAM).

This count time 'I' is the output voltage ■. This is the time from the first rise of ut to the second rise.

Next, the process proceeds to step S8, where the interrupt count counter T
A predetermined timer read count k set in advance by the IC.
Determine whether it has been reached. If the timer read count k is, for example, 10 times, a negative judgment is made until the interrupt count counter TIC reaches "lO", and the process proceeds to step -89, where the interrupt count counter TIC is counted by +17 nops, and the main routine step is resumed. Return to S3.

The operation of the interrupt processing routine as described above, that is,
Step S3→S4→55-IS7-・58-39-3
In the cycle No. 3, the paper 1 being pushed out by the paper ejection roller 2 rotates the low pressure roller 7 and passes through the encoder disc 8.
is repeated every time the slit 8a crosses the optical path of the photosensor 9. Each time, the count time 'I'g,T is stored in the memory.

... is stored.

Output voltage■. 0. In the interrupt processing routine based on the 10th rising edge of T, the count time T is stored in the memory in step S7.

Then, in step S9, the interrupt count counter TIC is set to "IO".

In addition, just to be sure, the count time 1゛z is
Output voltage V. U is the time from the second rise to the third rise, and count time T is the time from the ninth rise to the tenth rise. Other count time T.

The same applies to ~T.

11th output voltage■. In the interrupt processing routine based on the rising edge of LIT, after the count time T1° is stored in the memory in step S7, the judgment in step S8 becomes tentative, and the process proceeds to step StO, where the start flag STF is set to "1". Then, the process returns to step S3 of the main routine, and the steering knob S4 is determined, but the determination at this time is h direction, and the process advances to step Sit.

Step 311 disables interrupts.
By doing so, even if the output voltage v out continues to rise, the interrupt processing routine is not proceeded to, and then the process proceeds to step S12, step S12.
Then, the number of times k (
=10) count time T,,'rz...Tk
(see Figure 4(a)) and read out their average value T
Calculate ave-(T++T, +...+Tk)/k.

This count time average value Tave is the average time of one cycle of 0N10FF of the photosensor 9, and the larger the value is, the slower the paper delivery speed S1 is, and the smaller the value is, the faster it is.

Since the rotation of the low-pressure roller rough is dependent on the movement of the paper, its rotational speed tends to become unstable at the initial stage when the paper l has been bitten, but the paper delivery speed S can be corrected by taking the count time average value Tave. The value can be detected.

Next, in step S13, the rotational speed n of the paper feed motor 4 is determined based on the count time average value T ave by referring to a table having characteristics as shown in FIG. 6 that is stored in the memory (ROM). Then, step S14
Executes the sorting processing routine.

In this sorting processing routine, the microcomputer 18 sends the speed control η-signal D containing the emotion of the rotational speed n.
n to the motor driver 19, and the motor driver 19
The paper feeding speed S2 of the paper feeding roller 3, which receives the rotational force from the paper feeding motor 4 via the transmission heald 5, is as follows.
This corresponds to the paper discharge speed S1 by the paper discharge roller 2.

That is, the count time average value Tave is inversely proportional to the paper delivery speed S1, the rotation speed 0 is inversely proportional to the count time average value 'r' a v e, and the paper feed speed S2 is inversely proportional to the rotation speed r1. Since there is a proportional relationship, Sl n l/Tave S.

However, by appropriately determining the proportionality constant in the characteristic diagram of FIG. 6, it is possible to set S,=S.

When the paper discharge speed by the paper discharge roller 2 is S+r (the suffix f means "fast") which is faster than 81 in the case of FIG. 4(a), the output voltage is ■.

The waveform of U
The average count time in the case of (!Tave) is smaller than Tave, and the rotation speed of the paper feed motor 4 is nl, which is faster than n. Therefore, the paper feed speed by the paper feed roller 3 is also S in the case of FIG. 4(a). , S□ is faster than , and in this case as well, S□=SI, and the paper feed speed S□ matches the paper discharge speed str.

Contrary to the above case, when the paper ejection speed by the paper ejection roller 2 is S1, which is slower than S in the case of FIG. 4(a) (the suffix S means "slow"). is the output voltage ■. . The waveform of , becomes as shown in FIG. 4(C), and the count time average TaVe-s at this time is larger than the count time average 4aTave in the case of FIG. 4(a), and the paper feed motor 4 The rotational speed is n, which is slower than n.

Therefore, the paper feed speed by the paper feed roller 3 is Sts, which is slower than 82 in the case of FIG.
Matches the unloading speed sag.

In short, l) Even if the paper delivery speed S changes depending on the type of external equipment such as PC or LBP, the paper feed speed S2 is changed accordingly, and the two speeds are controlled so that they always match. Therefore, the optional sorter B of this embodiment can be connected and used with a plurality of types of external devices having different paper discharge speeds S.

In the second embodiment, the paper feed speed S2 by the paper feed roller 3 was controlled to match the paper delivery speed S1 by the paper discharge roller 2, but the paper feed speed S was set to be faster by a constant speed S cons L. You may do "HHB" as follows (5, -3, +5consL).

This is because there is no risk of paper jams.

Further, in the embodiment 1-1, the low pressure roller 7. Encoder disc8. Photo sensor 9. Instead of this, we used two light emitters and receivers arranged vertically opposite each other in the middle of the conveyance path of the paper feed unit, and a light receiver in the first light emitter and receiver. The unloading speed detection section 6 may be configured with a timer that counts the time from when the light is shielded by the leading edge of the paper l until the light receiver of the second light emitter/receiver is shielded.

Further, in the above embodiment, the microcomputer 18 is used as the speed control section for software control, but instead of this, it is also possible to configure the speed control section using hardware.

<Effect of the invention> According to the present invention, the following effects are achieved.

In other words, the discharge speed of the paper supplied from the paper output section of the external device to the paper feed section is detected by the discharge speed detection section, and the speed is controlled so that the paper feed speed of the paper feed roller is varied according to the paper feed speed. Since the rotation speed of the paper feed motor is controlled by the unit, it is possible to control the paper feed speed according to the paper feed speed of each external device, even for multiple types of external devices that have different paper feed speeds due to different models. This makes it possible to make the option sorter more versatile and connect it to multiple types of external devices of different models.

Therefore, regarding the production of the optional sorter, there is no need to design and manufacture each external device model, and a small-variety production format can be adopted. It is advantageous.

[Brief explanation of drawings]

Figures 1 to 6 relate to one embodiment of the present invention, with Figure 1 being a schematic diagram of the paper feed section of the optional soak and the paper output section of the external device, and Figure 2 being a mechanical diagram of the output speed detection section. A perspective view showing the configuration, FIG. 3 is a circuit diagram showing the electrical configuration of the unloading speed detection section, FIG. FIG. 4 is a table correspondence diagram of motor rotational speeds.

Claims (1)

[Claims] (1) A paper feed roller that conveys the paper that is carried out from the paper output section of an external device and supplied to the paper feed section, a paper feed motor that drives this paper feed roller, and a side above the paper feed roller. an ejecting speed detection section located at and detecting the paper ejecting speed from the paper ejecting section; and a paper ejecting speed detecting section that detects the paper feeding speed by the paper feed roller by controlling the rotational speed of the paper feed motor according to the paper ejecting speed. A paper feed motor speed control device in an optional sorter equipped with a variable speed control section.