JPH0622682Y2 - Automatic paper width setting device for offset printing machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is suitable for use in automatically adjusting the setting position of a paper width when it is necessary to readjust the setting position when changing the setting. The present invention relates to a paper width automatic setting device.

[Conventional technology]

Conventionally, in the offset rotary printing press, when changing the setting of the paper width, each part (edge guide sensor, paper break sensor, former,
It is supposed to readjust the setting position of the turn bar, etc.).

[Problems to be solved by the device]

However, since the readjustment of the setting position of each part due to the change of the setting of the paper width is performed manually for each part, an increase in the setup time (adjustment time) is unavoidable and an excessive amount of labor is required. However, there was a problem that the set position accuracy was poor.

[Means for Solving the Problems]

The present invention has been made to solve such a problem, and detects an actuator that moves an adjusted part that requires readjustment of its set position and a movement amount of the adjusted part that is moved by this actuator. Based on the movement amount detector and the set paper width provided as data from the outside, the necessary adjustment movement amount from the current position of the adjusted portion according to the set paper width is calculated, and the movement command is given to the actuator, The calculation means compares the calculated required adjustment movement amount with the actual movement amount detected by the movement amount detector and gives a movement stop command to the actuator based on the comparison result.

[Action]

Therefore, according to this invention, after calculating the necessary adjustment movement amount according to the set paper width from the current position of the adjusted portion,
When the actual movement amount matches this required adjustment movement amount,
The movement of the adjusted portion can be stopped automatically and with high accuracy.

〔Example〕

Hereinafter, the automatic paper width setting device according to the present invention will be described in detail.

FIG. 1 is a block diagram showing an embodiment of the automatic paper width setting apparatus, and shows an example in which an adjusted portion requiring readjustment of its setting position is shown as an edge guide sensor.
That is, in the figure, 1 is an edge guide sensor, 2 is
Is a motor as an actuator for moving the edge guide sensor 1, 2-1 is integrally attached to the motor 2, and a number of pulse signals (encoders) corresponding to the rotation amount of the motor 2, that is, the movement amount of the edge guide sensor 1 is used. Encoder 3 for sending out a signal), 3 is a motor driver for driving the motor 2, 4 is an input device which is an input part of paper width data given through the ten-key 5, and 6 is provided through this input device 4. An arithmetic unit for calculating the necessary adjustment movement amount from the current position of the edge guide sensor 1 according to the paper width data based on the paper width data, and 7 is the arithmetic unit 6
Is an output interface for giving a movement command from the motor driver 3 to the motor driver 3, and 8 is a current value counter for counting the pulse with the encoder signal from the encoder 2-1 as an input and giving the count value to the arithmetic unit 6.

The movement command given to the motor driver 3 via the output interface 7 is issued from the arithmetic unit 6 by being prompted by the start command given via the input device 4 by turning on the start switch 9. There is. Further, the moving amount (actual moving amount) of the edge guide sensor 1 is monitored by the arithmetic unit 6 on the basis of the count value input via the current value counter 8 and is monitored. When the actual movement amount of the edge guide sensor 1 matches the required adjustment movement amount calculated according to the paper width data, a movement stop command is given from the arithmetic unit 6 to the motor driver 3 via the output interface 7. Has become.

Next, the operation of the automatic paper width setting device thus configured will be described with reference to the flow chart shown in FIG. That is, when changing the paper width setting, the changed paper width is input as data through the ten keys 5 (step 201). The input paper width data is input to the input device 4
Is supplied to the arithmetic unit 6 via the calculation unit 6, and the arithmetic unit 6 calculates the necessary adjustment movement amount from the current position of the edge guide sensor 1 according to the paper width data (step 2
02). That is, the edge guide sensor 1 for the paper width
The required adjustment movement amount of does not match the amount of paper width.
For this reason, the paper width data given to the input device 4 is converted into the actual necessary adjustment movement amount in the arithmetic device 6. The conversion amount at this time is the size of the machine (width direction)
It should be noted that it is not uniform as it varies depending on.

Then, when the start switch 9 is turned on (step 203), the start instruction given through the input device 4 prompts the movement instruction to the motor driver 3 through the output interface 7 from the arithmetic device 6, By driving the motor 2 based on this movement command (step 2
04), the edge guide sensor 1 moves.
In addition, the count operation of the current value counter 8 is started based on the encoder signal sent from the encoder 2-1 according to the movement of the edge guide sensor 1 (step 2
05), the moving amount (actual moving amount) of the edge guide sensor 1 is monitored by the arithmetic unit 6 based on the count value input via the present value counter 8.

Thus, if the actual movement amount of the edge guide sensor 1 matches the previously calculated necessary adjustment movement amount, the movement stop command is issued from the arithmetic unit 6 to the motor driver 3 via the output interface 7. Next (Step 20
6) Then, the drive of the motor 2 is interrupted by this movement stop command, and the movement of the edge guide sensor 1 is stopped (step 207). As a result, the readjustment of the setting position of the edge guide sensor 1 due to the paper width change is completed.

That is, when the paper width data to be changed is input through the ten-key pad 5 and the start switch 9 is turned on, the edge guide sensor 1 automatically moves to a position corresponding to the paper width data and stops, and the set position is changed. The readjustment (preset) of will be performed with high accuracy.

In the present embodiment, the edge guide sensor 1 is shown as an example of the adjusted portion that requires readjustment of the set position, but there are many adjusted portions other than the edge guide sensor. , An edge guide sensor and a splicer arm, for example, for the paper feed unit,
An example of the printing unit is a detector sensor (paper break sensor), an example of the cooling unit is its edge guide sensor, and an example of a folding machine is its compensator (top and bottom), color marks (nozzles), and former position. . In this case, the block shown by the one-dot chain line in FIG. 1 should be a common part, and the motor 2, the encoder 2-1, the motor driver 3, the output interface 7, and the current value counter 8 should be added correspondingly to the adjusted part. This enables multi-axis control. That is, by performing such multi-axis control, each adjusted portion is automatically and highly accurately preset at one time when the paper width is changed, and the setup time is shortened and the labor is reduced. Compared with the conventional manual adjustment method, the labor can be greatly saved.

Further, in the present embodiment, the movement stop command is issued when the actual movement amount of the edge guide sensor 1 in the arithmetic unit 6 matches the required adjustment movement amount, but in consideration of the inertia of the motor 2 and the like. The movement stop command may be issued before the actual movement amount and the required adjustment movement amount match.

Further, although an example in which an encoder is used as the movement amount detector is shown here, it goes without saying that a potentiometer or the like may be used instead.

[Effect of device]

As described above, according to the automatic paper width setting device of the present invention, the actuator that moves the adjusted portion that requires readjustment of the set position and the movement that detects the amount of movement of the adjusted portion that is moved by this actuator. Based on the amount detector and the set paper width provided as data from the outside, the necessary adjustment movement amount from the current position of the adjusted part according to this set paper width is calculated, and the movement command is given to the actuator Since the necessary adjustment movement amount is compared with the actual movement amount detected by the movement amount detector, and the calculation means for giving a movement stop command to the actuator based on the comparison result is provided, The required adjustment movement amount is calculated according to the paper width set for, and when the actual movement amount matches the required adjustment movement amount, the adjustment target is automatically moved. And it will be capable of stopping a high accuracy, reduced setup time when the paper width changes its effort is reduced with the reduced, and that significant labor saving compared to the method according to the conventional manual adjustment is achieved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an automatic paper width setting device according to the present invention, and FIG. 2 is a flow chart for explaining the operation of the automatic paper width setting device. 1 ... Edge guide sensor, 2 ... Motor, 2-1 ... Encoder, 3 ... Motor driver, 4 ... Input device, 6
…… Computing device, 7 …… Output interface, 8 …… Current value counter.

Claims (1)

[Scope of utility model registration request] 1. An actuator for moving an adjusted portion that requires readjustment of its set value, a movement amount detector for detecting an amount of movement of the adjusted portion moved by the actuator, and data from the outside. Based on the set paper width provided, a necessary adjustment movement amount from the current position of the adjusted portion according to the set paper width is calculated, and a movement command is given to the actuator, while the calculated necessary adjustment movement amount and the A paper width automatic setting device in an offset printing machine, comprising: an arithmetic unit that compares an actual movement amount detected by a movement amount detector and gives a movement stop command to the actuator based on the comparison result.