JPS6058854A - Automatic setting mechanism of cylinder driving for printing press - Google Patents

Abstract

PURPOSE:To provide the title mechanism which enable the driving at a proper setting position for mounting or detaching thereof by a method wherein the angle of rotation is divided by several stages in a printing press and any set angles of rotation are extracted by stages with a detection mechanism so as to be automatically switched over at a proper timing angle when it runs at a desired rotation speed. CONSTITUTION:An angle of machine rotation detector section (A) detects the angle of rotation of a printing press with a rotational position detector 1 and inputs the pulse output thereof and a set reference signal from an angle of rotation detector 2 into a multi-stage counter 3 of a desired angle output setting section (B). The setting section (B) sets any angles by multi- stages during one revolution and outputs them as driving timing to other sections. A speed- wise angle selection setting section (C) sets outputs of a desired speed in the combination of the input of a speed detector at a machine rotational speed detecting section (E) of a printing press and a speed setter. An input standby control section (D) combine the desired angle output setting section (B) and the speed-wise angle selection setting section (B) to pick up a timing output in a desired angle of rotation at any speed. Depending on the timing outputs [outputs of the components (B) and (C)] and a standby circuit 4, a proper driving timing is obtained for respective units and cylinders of the printing press to produces a cylinder driving output.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cylinder drive mechanism in a printing press.

Conventionally, oil or pneumatic cylinders have been used to attach and detach impression cylinders, ink rollers, water rollers, etc. of printing presses, and in this case, the operating time of the cylinder is almost constant, so it is difficult to ensure proper attachment and detachment. It was considered impossible and difficult. That is, in order to accurately attach and detach the printing mechanism at a proper rotational angle position when the printing mechanism rotates at each rotational speed, the driving timing of the cylinder must be adjusted to suit each rotational speed 5 and follow suit.

The timing of this cylinder drive was one of the key factors in determining the quality of the print finish.

The present invention was developed in order to solve the above-mentioned problems, and is used to attach and detach the impression cylinder, ink roller, water spout roller, etc. of a printing machine that rotates through the drive of the cylinder. A machine rotation angle detection section (4) that detects and inputs the pulse output of each angle obtained by dividing the rotation angle of the machine into multiple stages and a setting reference signal for each set angle; Arbitrary angle output setting section (Il) that sets stages and outputs cylinder drive timing;
A detection input of the rotational speed of the machine (and a set speed output), a speed-specific angle switching setting section (0) that sets and outputs a plurality of arbitrary set speeds, a multistage counter, and a timing angle switching output.

By using a mechanism consisting of a human output continuous control unit (CD) that outputs the timing of an arbitrary rotation angle and further outputs the appropriate drive timing for each cylinder of the machine using a continuous control circuit, the cylinders can be set at the appropriate setting position. The present invention provides an automatic setting mechanism for cylinder drive in a printing press, which aims to drive the cylinder to ensure proper attachment and detachment.

An embodiment of the present invention will be described below with reference to the F1 drawing.
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Fig. 1 shows an overview of the automatic setting mechanism for cylinder drive in a printing press according to the present invention.1 Machine rotation angle detection section (A), arbitrary angle output setting section (B), speed-based angle switching setting section (a) and an input hold-off control section (D). The machine rotation angle detection section (4) uses the one-rotation position detector 1 to divide the rotation angle of the printing machine, detects this, and outputs pulses for each angle to the arbitrary angle output setting section (B).
input to the multi-stage counter 3. On the other hand, it is a mechanism that uses the one-rotation angle detector 2, installs detection for each set angle, and inputs a setting standard signal to the multistage counter 3 of the arbitrary angle output setting section (E). (E) The arbitrary angle output setting section is
This is a mechanism that catches the input from the detection section (4), sets arbitrary angles in multiple stages within one rotation, and further outputs this as external drive timing. In this case, the output signal width can also be set arbitrarily.

The speed-based angle switching setting section (0) uses input from a machine rotational speed detection section (another speed detector (not shown)) of the printing press and a speed setting device (not shown).

This is a mechanism that allows multiple setting outputs at arbitrary speeds. (D) combines the arbitrary angle output setting section (B) and the speed-specific angle switching setting section (0) to
A timing output for any rotation angle can be taken out, and by inputting this timing output (B, 0 output) and the cut-off circuit 4, appropriate drive timing is obtained for each unit and cylinder of the printing machine, and the cylinder drive output is obtained. It is a mechanism to do this. In this way, this mechanism divides the rotation angle of the printing machine into multiple stages, uses the detection mechanism to extract any set rotation angle in multiple stages, and then automatically divides this into multiple stages at the appropriate timing angle at any rotation speed. By switching to the appropriate setting position, the cylinder can be driven to properly attach and detach.

Figures f42 to 6 show the main parts of the mechanism of the present invention and their functions. First, FIG. 2 shows a detection method using the rotational position detector 1 and the rotational angle detector 2 of the mechanical rotational angle detection section (4).
．． 2... Since the reference rotation angle is written as H, the reference rotation angle is divided into multiple stages from the rotation axis (not shown) of the printing machine, and this is output as a pulse signal from Pl.

This is input to the multi-stage output counter of the arbitrary angle output setting section (B) shown in FIG. 3, and further converted into an arbitrarily set number (set angle) and output. On the other hand, the rotation angle and the reference point are detected by the detector 2, and the reference point of the rotation angle width is set by the arbitrary angle output setting section (
Counting is performed by manually inputting the multi-stage counter in B) and further inputting the pulse signal of Pl. In this way, from the reference point 0 to 0
When the first step up to is counted into the multi-stage counter by Pl and reset by tP2, the multi-stage output of the counter is arbitrarily set.

This counter multistage output corresponds to the cylinder drive timing. Figure 4 shows two machine rotational speed detection parts @]
7 is the speed detector. A speed setter 8 is disposed inside the speed detector 7, and the set speed output is outputted to a speed-specific angle switching setting section (0) shown in FIG. 5 is a main motor, and 6 is a generator. That is, the rotational speed of the main motor 5 of the printing machine is detected via a speed detector 7, and this is further output via a speed setting device 8 at a plurality of stages at arbitrary speeds. In this way, the set speed output is input to the speed-based angle switching setting section (0) (FIG. 5).

Corresponding to the angle count output (timing conversion), the timing of each cylinder drive is outputted, and each cylinder drive is outputted as shown in FIG.

The cono cylinder drive output allows each cylinder drive to automatically follow and operate at any appropriate position.

Since the present 1jJJ is configured as 1 or more, there is no need to adjust the cylinder drive timing each time, and not only can the drive be adjusted automatically, but it can also be adjusted properly and reliably at any speed within one rotational speed. It is possible to drive each cylinder etc. to perform good attachment and detachment, and since it is a simple mechanism, it is possible to make an inexpensive device, so it is very effective in terms of performance, operation, economy, and practicality. It can be said that this is a novel and excellent automatic cylinder drive setting mechanism for printing presses from all aspects.

2. Although the present invention has been described with respect to a cylinder drive of a printing press, it goes without saying that it can be applied to cylinder drives other than printing presses.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of the entire mechanism showing the automatic cylinder drive setting mechanism in the printing press of the present invention, and FIGS. 2 to 6 show the main parts of the mechanism of the present invention shown in FIG. It is an explanatory diagram about an effect. (4)...Mechanical rotation angular velocity detection section (B)...
... Arbitrary angle output setting section (6) ... Speed-based angle switching setting section (D) ... Input/output holding control section (Ili) ... Machine rotation speed Detection unit 1...
・・Rotation position detector 2・・・・−Rotation angle detection pin 3・
...Multi-stage counter 4...Waiting circuit Fig. 2 1 Fig. 6

Claims (1)

[Claims] In the attachment/detachment mechanism of printing machines such as impression cylinders, ink rollers, and water rollers that rotate through the drive of cylinders, the pulse output of each angle obtained by dividing the rotation angle of each machine into multiple stages and the setting reference signal of setting angle irregularities are detected. Mechanical rotation angle detection section (4) to be inputted and the detection section (which can input any angle by
The arbitrary angle output setting part ψ) which outputs the cylinder drive timing by setting several steps, the detection input of the rotational speed of one machine (to)) and the output of the set speed allows you to set and output multiple arbitrary set speeds. A human output that outputs the timing of any rotation angle using a speed-specific angle switching setting section (0), a multi-stage counter, and a timing angle switching output, and further outputs the appropriate drive timing for each cylinder of the machine using a holding circuit. 1. An automatic cylinder drive setting mechanism for a printing press, characterized by comprising a holding control section (D).