JPS5851100A - Method of setting gate in cutting controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The misfire gi4Fi is a device for controlling the cutting position of a printed web in the O-fold section of a rotary printing press, the sheeter S, or the cutting section of a bag-making machine. The present invention relates to a method for setting a gate to automatically output a registered register error.

As an example of this type of cutting control device, as shown in FIG. A gate signal is generated by a gate extruder or a pulse generator 4, and a gate is set by a controller 25. At the same time, a register mark 6 is formed to form a web IK as shown in FIG. There is known a control device that extracts only a mark signal M regarding the register mark 6 based on the gate from the mark detector number obtained by the mark detector 7 for detection of the register mark 6, and performs cutting control. Here, 8 is a correction motor, 9 is a correction roller, and L is the repeat length of printed matter, that is, the cutting interval.

Conventionally, in such a cutting control device, the web 1 is held in one place, the register mark 6 is aligned directly below the mark detector 7 (detection position), and then the gate is set by the controller 5, or a certain i is set by the oscilloscope. .

It has been common practice to set the gate while detecting the register mark 6 with a rotoscope or the like, and then start cutting control. However, such a gate setting method may require a lot of time or waste paper to complete the gate setting. For example, if the register mark 6 is placed against the mark detector 7, For positioning, the operator must go to the mark detector 7 and position the register mark 6 while moving the printing press in increments.This is easy if the mark detector 7 is located in a very easily accessible location. However, in general, they are often located in locations that are difficult to operate, which results in a considerable amount of time being wasted.

In addition, when setting the gate while detecting with an oscilloscope, there is no need to stop the printing press, but a large amount of waste paper will be generated until the gate setting is completed. It is an object of the present invention to provide a gate setting method capable of automatically setting a gate by eliminating such conventional drawbacks.

For this reason, the present invention uses a pulse generator that rotates in synchronization with the cutting knife to generate one part of the cutting knife.
By generating n pulses during rotation and counting these n pulses with a counter, it is possible to assign addresses for each rotation angle of the cutting knife over one rotation of the cutting knife. If you use this type of pulse generator, you can calculate the address in seconds without the need for a counter! fruit,
These addresses are stored in microprocessors (hereinafter M, P, U).
It is possible to detect which address the register mark detection point corresponds to with respect to the pulse generator by constantly monitoring the mark signal obtained from the mark detector and at the same time monitoring the mark signal obtained from the mark detector. The present invention is characterized in that a gate is automatically and immediately set at the position where a mark signal is generated.

This will be explained in more detail with reference to Figures (a) and (b).

The output signal of the pulse generator 4 is counted by a counter 10, and the output of this counter 10 is inputted to a microprocessor (MPU-) 12 through an input port 11.

Since this pulse generator 4 generates n pulses per revolution, the count 610 is 1 n. The signal M1 of the signal detector 7 is transmitted to the waveform shaping circuit 13.
It is connected to an AND circuit (AND circuit) 14 and 15 through the circuit. The output of the AND circuit 14 is connected to the M error detection circuit/control circuit 16 . Furthermore, the output M4 of the AND circuit 15 serves as an interrupt signal to the MPU 12.

The AND circuits 14 and 15 are controlled by the switch (SW) 17 and the gate signal G from the gate generator 18, so whether the switch 8W17u rONJ is in the
It is constantly monitored by the KMPU 12 to see if it is in the 0FFJO state.

If the switch (BN) 17 is used as the switch to start automatic gate setting, when the switch (8W) 17 is in the "ON" state, that is, the logic "0" state, the AND circuit 19.1
4 is prohibited and no Ma light is generated. On the other hand, the AND circuit 15a becomes the logic "1" state, that is, the open state, through the inverting circuit (INV) 20, so that from this point on, the first mark signal M4 is output, and the switch (SW)
Since the signal of 17 is monitored by MPU 12,
When rONJK is reached, the MPU 12 receives a signal to start automatic gate setting and sends a mark signal MaOMPU1.
Waiting for the generation of an interrupt signal for 2. At the same time as the mark signal MdE is generated, the MPU 12 stores the corresponding address in the pulse generator 4 via the human capo, and outputs an optimal gate having a preset and designated width to the gate generator 18. At the same time, the operator is informed that the light emission is complete.

Switch (fsW) 17 is rOFF'J f) state 114
Kfx root, AND circuit 15 is prohibited, and the mark signal is no longer generated. On the other hand, since the AND circuits 19 and 14 are disabled, the mark signal M is output and control is started.

The timing of such an operation tl@2 (shown in bl) shows the case where the register mark signal is located at the 51st scan point in the pulse generator 4, and the width of 1 gate for the 2nd address (51 , 52 locations) and set the gate.

As described above, according to the method of the present invention, when automatic gate setting is started by operating a switch, the register mark signal is automatically detected, and at the same time, the gate of the predetermined appropriate gate width is set by the gate generator Kv & It is determined that
Therefore, there is no need to go to the mark detector each time, gate setting is completed instantly without stopping the printing press, and it is possible to achieve a large amount of control, such as entering the control mark, without causing horizontal paper. obtain the effect of

[Brief explanation of the drawing]

Figure 1! L) A block diagram schematically showing a cutting device in a Hiro printing press. FIG. 1(b) is an explanatory diagram showing web register adjustment and heat detection signals. FIG. 2-) is a block diagram showing the circuit configuration of an embodiment of the present invention. Figure 2 (btu Diagram showing the timing of the 6-glaze signal that corresponds to Figure 2 (a).・・・・・・
...Cutting knife roller 4, axis...Pulse generator 5...Controller 6...River...Register information 7...Mark detection Counter 11...Mori/Input port 12...Microprocessor, that is, MPU1
3-...Waveform shaping circuit 14.15.19...AND circuit 16...Error detection/control circuit 18...
・Gate generation/device patent applicant Japan Regulator Co., Ltd. Representative Patent Attorney Sakae Ono Figure 1 (a) Figure 1-(-b) Figure 2 (a) HA'IL streak"°18 letter now Pass 11-
■1--L-14-L1 1 Figure 2 (b)

Claims (1)

[Claims] Based on a pulse signal from a pulse generator rotating in synchronization with a cutting knife 0-layer, based on a control device for cutting a web having register marks! The control processor assigns and detects an address for each angle of the mold back of the cutting beech roller, and at the time when a register mark signal is detected, the corresponding address is detected, and a predetermined ratio is set for this address. A gate setting method in a cutting control device K that automatically sets a gate by giving a gate width.