JPS6038300B2 - paper handling device - Google Patents

Description

Detailed Description of the Invention This invention performs a folding operation according to the amount of paper fed from a printing device such as a line printer, and cuts and discharges the paper in response to the completion of printing processing in the printing device. The present invention relates to a paper processing device.

Paper processing in printing devices used as output terminal devices for information processing devices such as line printers involves folding the paper naturally with perforations on a storage table placed on the paper delivery side. Failures are likely to occur, and if you do not refold them each time, you will have to refold them after the processing is completed, and there is a problem in that you will have to waste time sorting them out.

Furthermore, at the end of the printing process, it is necessary to manually cut the paper at perforations, and in information processing equipment that outputs various types of data based on different requirements, there is a problem in that the paper has to be cut at the perforations in order to remove the paper. there were. Under such circumstances,
A paper processing device has been put into practical use to automatically process paper printed by line printers, etc.
During the folding operation after paper is cut in response to the completion of printing processing in line printers, etc., paper gets caught or folding failures are frequently observed, and this is considered a drawback of paper processing devices currently in practical use. . An object of the present invention is to provide a circuit means for correctly folding the paper between the cutting position and the feed roller by correcting the swing operation after the paper is cut, and preventing the end of the paper from getting caught in the swing section. The present invention provides a paper processing device equipped with the following. That is, according to the present invention, the swing fin is swung according to the amount of paper fed from a printing device such as a line printer to perform a paper folding operation, and also responds to the completion of printing processing in the printing device. In a paper processing device that cuts and discharges paper by cutting and discharging the paper, in order to swing the swing fin that has been temporarily stopped at the time of cutting, the paper feed amount from the cutting position to the cutting detection is added as a correction value to the paper feed amount taken out at the cutting detection. By providing the first swing fin correction circuit and the second swing fin correction circuit that swings the swing fin a predetermined number of times when the absence of paper on the entrance side of the swing fin is detected, the paper can be corrected after cutting the paper. Accordingly, there is provided a paper processing device that can perform good paper processing by preventing the folding of the paper and the catching of the end of the paper.

Next, embodiments of the invention will be described with reference to the drawings.

As shown in FIG. 1, the mechanical configuration of the paper processing device includes a feeder roller 3 for feeding paper 9 with perforations made at regular intervals, and a stage for folding the paper 9. A swing fin 4 that swings vertically to a pedestal 5 for accumulating paper, and paper 9 accumulated on the pedestal 5
A discharge mechanism 5' for discharging the paper 9, a table 6 for taking out the discharged paper 9, a cutter 8 for cutting the paper 9 along its perforations, and a detection device for detecting whether the paper 9 has been cut or not. The paper cutter detector 2 includes a paper cut detector 2, and a paper detection switch 7 for detecting the presence or absence of paper and the start and end of the paper.

To explain the outline of its operation, the paper 9 is fed from a printing device such as a line printer, and when it enters the device 1, it naturally falls and is bitten by the feed roller 3. At this time, the paper detection switch 7 is operated and the paper folding operation is started. That is, the swing fin 4 is (left side) → (center) →
(right side) → (center), the sheets 9 are folded and stored correctly on the pedestal 5 by swinging in stages with four steps as one cycle. When the printing process on the line printer is finished, the paper 9 is cut into the cutter 8 at the perforation position.
When the paper cut is detected by the paper cut detector 2, the swing fin correction circuit, which will be explained later, swings the swing fin 4 again to properly fold the last page. The sheets accumulated on the table 5 are discharged onto the table 6 by the discharge mechanism 5'. still,
The pedestal 5 and the table 6 automatically lower according to the amount of accumulated paper, and the ejection mechanism 5' automatically lowers the paper onto the table 6 after the cutter 8 operates and the cut paper is folded onto the pedestal 5. This is to eject paper. FIG. 2 is a circuit block diagram showing the control circuit of the paper processing apparatus of the present invention.
A paper length setting rotary switch 21 for setting the length of paper to be fed in each step, and a feed disk 1 attached to the feed roller 3 to generate a pseudo feed pulse corresponding to the amount of paper fed by the feed roller 3.
0 and associated feed pulse detector 12,
A line pulse disk 11 and a line pulse detector 13 for generating line pulses that match the paper feed amount in the line printer, and an up/down counter 19 for producing feed pulses that match the paper feed amount in the device. A paper length counter 18 for counting the amount of paper conveyed within the frame, a paper length matching circuit 22 for detecting the drive timing of the swing fin 4, and a swing fin control circuit 25 for operating the swing fin 4 to fold the paper. , a cutter drive control circuit 14 that cuts the paper in response to a cutting command signal 26 that responds to the completion of processing from the line printer, and a feed amount correction value that corrects the content of the paper length counter 8 after cutting the paper and feeds it from the cutting position. It includes a first swing fin correction circuit 15 for correctly folding the paper between the rollers, and a second swing fin correction circuit 20 for preventing the end of the paper from getting caught in the swing fin portion.

Also, as an interface for each circuit section,
AND gates 17 and OR gates 16, 23, and 24 are provided, and in particular, OR gate 23 is used to inhibit the sending of a feed pulse that enters the other of AND gates 17 when the content of up/down counter 9 is zero. Next, the operation of the paper processing apparatus according to the present invention will be explained with reference to FIG.

First, in order to perform the folding operation by swinging the swing fins 4, some kind of neck is required depending on the paper feeding speed within the device.

Since a long pulse is required, detection of this pulse will be explained. In general, the paper feed speed of line printers varies depending on the model, and it is preferable to synchronize the paper feed speed of a paper processing device with this paper feed speed since this will hinder the versatility of the paper processing device according to the present invention. Therefore, the paper feeding speeds of the live printer and the paper processing device are not necessarily synchronized. Therefore, a common means is to connect a feed pulse disk 10 to a feed loaf 3 in the device, and detect it optically or magnetically by a combination of slits provided at equal intervals on the disk surface and a feed pulse detector 12. A feed pulse that matches the paper feeding speed within the device is extracted. However, since the feed roller 3 may rotate even when the paper is stopped, it is not possible to obtain the correct paper advance rate even if the feed pulses are directly counted, and the pulses detected by the feed pulse detector 12 are spurious. It is something. Therefore, in order to obtain the correct amount of paper feed, the line pulse disk 11 is attached to the drive shaft of the tractor of the line printer that feeds the paper, and the line pulse is detected by the line pulse detector 13 in the same manner as the feed pulse detector 12. By counting these line pulses, the correct amount of paper feed is determined, and this correct amount of paper feed is taken out at the timing of the feed pulse. On the premise of detecting a feed pulse that matches the correct paper feed amount and paper feed speed within the apparatus, the operation in a steady state before the paper is cut will be described first with reference to FIG.

The paper feeding amount from the line printer is a line pulse representing a unit distance detected by a line pulse detector 13.
It is obtained by bit-up (incrementing) the up-down counter 9.

At the same time, a feed pulse obtained by feeding the paper by the feed roller 3 is input to one side of the AND gate 17.
In addition, the output of the OR gate 23 is applied to the other input of the AND gate 17 unless the contents of the up/down counter 19 become zero. It is down (day increment). Therefore, when the content of the up-down counter 9 becomes zero due to the feed pulse from the AND gate 17, that is, when the paper feed amount in the line printer due to the supply of the line pulse matches the paper feed amount by the feed roller 3, the AND gate 17 controls the feed pulse. Even if feeding is prohibited and the feed loaf 3 rotates when the paper stops and a pseudo feed pulse is generated, no error occurs in counting the amount of paper feed within the apparatus. The feed pulse taken out by the AND gate 17 is passed through the OR gate 16 to the paper length counter 1.
8 and is counted to obtain the amount of paper feeding within the device.

The value of this paper length counter 18 is determined by the paper length matching circuit 22.
It is compared with the setting value of the paper length setting rotary switch 21 which sets the paper length necessary for each step making up one cycle of the swing fin 4, and when the two match, the paper length matching circuit 22 sends a signal to the swing fin control circuit 25 via the OR gate 24.
Therefore, the swing fin control circuit 25 moves the swing fin 4 by one step. At the same time, the signal output from the paper length matching circuit 22 is fed back to the paper length counter 18 to reset its contents. Thereafter, in the same manner, each time the count content of the paper length counter 18 matches the setting value of the paper length setting rotary switch 21, the paper length matching circuit 2
2 sends a signal to the swing fin control circuit 25, and the swing fin 4 is moved one step at a time, whereby the paper is properly folded onto the pedestal 55. As mentioned above, the movement of the swing fin 4 is from (left side) to (center)
One cycle consists of four steps: → (right side) → {center). Further, the stepwise rocking of the swing fin 4 is realized by means such as an electromagnetic clutch. Next, the operation of the paper processing apparatus of the present invention after cutting the paper will be explained with reference to FIG. When the line printer finishes printing the paper, it feeds the paper until the perforation reaches the paper cutting position (point a in Figure 1), and stops feeding the paper when the perforation reaches the paper cutting position. Then, a cutting command signal 26 in response to the processing end signal is sent to the paper processing device.

The cutting command signal 26 is applied to the cutter drive control device 14, and the cutter 8 is driven to cut the paper along the perforations, and at the same time, the feed roller 3 is driven. When the paper is cut by the cutter 8, the paper is fed as the feed roller 3 is rotating, and the paper is cut by the paper cut detector 2 when the paper end is at the paper cut detection position (point b in Figure 1). detect that something has happened. When the cut of the paper is detected by the cut detector 2, a feed pulse corresponding to the paper feed amount is supplied to the paper length counter 18, and the paper length matching circuit 22 is operated in the same manner as in the steady state described above.
When a match is found with the setting value of the paper length setting rotary switch 21, the swing fin control circuit 25 is activated and the swing fin 4 is driven. However, if the counting of the paper length counter 18 by the feed pulse is started after detecting that the paper is cut at the paper cut detection position (point b in Figure 1), the paper length counter 18 starts counting from the paper cut detection position to the paper cut detection position. The drive timing of the swing fin 4 is delayed by the paper length between a and b in FIG.

Therefore, the paper processing apparatus of the present invention is provided with a first swing fin correction circuit 14 that generates a correction pulse for incrementing the paper length counter 18 by the paper length between a and b. First, the supply of feed pulses to the paper length counter 18 is prohibited by setting the signal 27 to the AND gate 17 to a logic level of 0'' until the paper cut detector 2 detects a cut of the paper.

On the other hand, the cutter drive control circuit 14 sends a cutting completion signal 28 to the swing fin correction circuit 15 at the timing of the drive signal for the cutter 8. This cutting completion signal serves as a ready signal that puts the swing fin correction circuit 15 into a standby state. The swing fin correction circuit 15 has a built-in counter for sending out a number of unit side length pulses corresponding to the paper length between a and b, and receives a paper cut detection signal from the paper cut detector 2. When you are
The built-in counter sends out a correction pulse that matches the paper length between a and b based on logical product with the cutting completion signal 28, and this correction pulse is given to the paper length counter 18 via the OR gate 16, and the paper length counter The count contents of 18 are corrected to the correct paper feed amount. However, when the cutting of the paper is detected, the signal 27 to the AND gate 17 is simultaneously activated.
The logic level of 1'' changes to 1'', the inhibited state of the AND gate 27 is released, and the feed pulse from the feed pulse detector 12 is applied to the paper length counter 18 via the AND gate 17 and the OR gate 16.

Therefore, the correction pulse from the swing fin correction circuit 15 and the feed pulse may overlap at the OR gate 16, causing an error. Therefore, the swing fin correction circuit 15 inputs a feed pulse from the feed pulse detector 12, operates a built-in counter at a timing delayed by a predetermined time from this feed pulse, and adjusts the OR gate 1.
In step 6, the sending timing of the correction pulse is controlled so that the correction pulse and the feed pulse do not overlap. Next, when the paper detection switch 7 detects the absence of paper, it activates the second swing fin correction circuit 20 and simultaneously resets the up/down counter 19 and the paper length counter 18.

Swing fin correction circuit 20' This is swing fin 4
A counter is built in to make the swing fin 4 swing for a certain period of time, and this counter is bit down every time the swing fin 4 moves one step. When the content of the counter becomes zero, the swing fin control circuit 25 moves the swing fin
Stops driving. That is, if the value of the counter built in the swing fin correction circuit 20 is now 16, when the absence of paper is detected by the paper detection switch 7, the swing fin control circuit 25 is sent via the OR gate 24.
A counter signal is applied at a predetermined period, and the swing fin 4 is swung 16 steps and finally stopped at the left position. Therefore, by swinging the swing fin over a desired number of steps, it is possible to completely prevent the trailing end of the sheet from getting caught in the swing fin portion. The drive of the cutter 8 by the cutter drive control circuit 14 is realized by electromagnetic means such as a solenoid, and the paper cutting detector may also be a reflective photo sensor. , which is realized using a general logic circuit.

As explained above, the paper processing device of the present invention is equipped with a circuit means for correcting the operation delay of the swing fin caused by an error in the paper feeding length that occurs after the paper is cut, so that it is possible to The paper is folded correctly up to the last page by the operation of the swing fin, and when the absence of paper is detected, the swing fin is swung a desired number of times, thereby folding the paper at the paper exit of the swing fin section, which is the exit side of the feed roller section. This prevents the trailing edge from getting caught and enables good paper processing of paper fed from a printing device such as a line printer.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a paper feeding mechanism in a paper processing apparatus of the present invention, and FIG. 2 is a circuit block diagram showing a paper feeding control circuit used in the paper processing apparatus of this invention. 1... Paper processing device, 2... Paper cut detector, 3... Feed roller, 4... Swing fin, 5
...cradle, 5'...discharge mechanism, 6...taffle, 7...
...Paper detection switch, 8...Cutter,
9...paper, 10...feed pulse disk, 11...
...Line pulse disk, 12...Feed pulse detector, 13...Line pulse detector, 14...
・Cutter drive control circuit, 15...first swing fin correction circuit, 16, 23, 24...OR gate, 17...AND gate, 18...paper length counter , 19...up/down counter, 20...second swing fin correction circuit, 2
1...Paper length setting rotary switch, 25.
...Swing fin control circuit, 26...
Cutting command signal, 27...Feed pulse prohibition signal,
28...Start signal. Figure 1 Figure 2

Claims (1)

[Claims] 1 Paper processing in which paper is folded by swinging a swing fin according to the amount of paper fed from a printing device such as a line printer, and the paper is cut and discharged in response to the completion of printing processing in the printing device. The device includes a first swing fin correction circuit that adds the paper feed amount from the cutting position to the cutting detection as a correction value, and a first swing fin correction circuit that swings the swing fin a predetermined number of times when the absence of paper on the entrance side of the swing fin is detected. 1. A paper processing device comprising: a second swing fin correction circuit.