JPH06206653A - Paper end position adjusting device in rotary press - Google Patents

Abstract

PURPOSE:To improve the working efficiency by adjusting a travel passage of a travel paper fed in a printing unit without applying unreasonable force to the travel paper, and preventing the rupture of the travel paper. CONSTITUTION:A device is provided with a potentiometer 26 to detect a swinging angle of a paper end position control device arranged in an infeed device of a rotary press and a control device 31 to operate a side lay device 7 arranged on one end of a spider arm 4 of a paper feeder according to output of this potentiometer 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper edge position adjusting device for a rotary printing press.

[0002]

2. Description of the Related Art A rotary printing machine comprises a paper feeding device, an infeed device, a printing unit, a dryer, a folding machine and the like. As shown in FIGS. 6 and 7, the paper feeding device includes a frame 1, a rotary shaft 2 rotatably supported by the frame 1, and a drive device 3 for rotating the rotary shaft 2.
A pair of spider arms 4 fixed to the rotating shaft 2 at a predetermined interval, a cone shaft 5 rotatably and slidably supported at an end of the spider arm 4, and a cone shaft 5
And a side lay device 7 for sliding the cone shaft 5, and a winding paper 8
The core shaft 9 is fitted with the cone shaft 5 to support the paper roll 8.

As shown in FIG. 6, the infeed device includes a frame 11, a plurality of guide rollers 12 rotatably supported at predetermined positions on the frame 11, a drag roller 13, and a drag roller 13. A pinch roller 14 supported so as to be able to contact and separate, a dancer roller 15 supported so as to be swingable, and a paper edge position control device 16 are provided.

Then, the running paper 10 pulled out from the web 8 is sent to the printing unit via the guide roller 12, the drag roller 13, the dancer roller 15 and the paper edge position control device 16. At this time, if there is a deviation between the running center of the running paper 10 in the printing unit and the center position of the paper roll 8 supported by the paper feeding device, the paper edge position control device 16 swings and is fed to the printing unit. The center position of the running paper 10 is corrected. When the traveling path of the traveling paper 10 is changed by the paper edge position control device 16, the tension applied to the traveling paper 10 becomes non-uniform in the paper width direction, and the traveling paper 10 travels in a so-called tension state.

Japanese Unexamined Patent Publication No. 59-97956 discloses an "automatic positioning device for detecting the edge of a paper roll" which adjusts the mounting position of the paper roll 8 with respect to a paper feeding device. In this automatic positioning device for detecting the edge of the paper roll, the edge end of the paper roll supported by the spider arm of the paper feeding device is detected, and the side lay device moves the paper roll in its axial direction to move the edge end to a predetermined position. It is designed to be positioned. However, it is not considered to correct the deviation between the running center of the running paper in the printing unit and the running center of the running paper pulled out from the web and fed to the printing unit.

[0006]

When the amount of rocking of the paper edge position control device 16 increases, the tension in the paper width direction of the running paper 10 deviates to a large extent, and the running paper 10 is broken due to small scratches at the ends. I have something to do.

In view of the above circumstances, an object of the present invention is to provide a running center of a running paper in a printing unit and a running center of a running paper that is pulled out from a web and fed into the printing unit without applying excessive force to the running paper. It is an object of the present invention to provide a paper edge position adjusting device for a rotary printing press, which corrects the misalignment and prevents the running paper from being broken.

[0008]

In order to achieve the above object, in the present invention, a detection means for detecting the rotation angle of a paper edge position control device arranged in an infeed device of a rotary printing press, and this detection. A control device is provided which operates a side lay device provided at one end of the spider arm of the paper feeding device based on the output of the means.

[0009]

Then, based on the output of the detecting means, the side lay device is operated to move the web in the axial direction of the web, so that the running center of the running paper in the printing unit and the paper taken out from the web are sent to the printing unit. Correct the deviation of the running center of running paper.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
It will be described based on. The same parts as those in FIGS. 6 and 7 are designated by the same reference numerals.

1 to 3 show a paper edge position control device, in which 20 is a base. Reference numeral 21 denotes a lever, which is rotatably supported by the base 20 via a shaft 22. A frame 23 is fixed to one end of the lever 21. A roller 24 is rotatably supported by the frame 23. Reference numeral 25 is a direct drive type motor, which is a base 20.
And its movable part is connected to the lever 21. A potentiometer 26 is supported by the base 20. A timing pulley 27 is fixed to the input shaft of the potentiometer 26. A timing pulley 28 is fixed to the lever 21. Reference numeral 29 is a timing belt, which is stretched around the timing pulley 27 and the timing pulley 28. A paper edge detection device 30 is attached to the paper edge position control device and applies a detection signal to the motor 25.

FIG. 4 shows an example of a paper edge position adjusting device using the paper edge position control device. In FIG. 4, the control device 31 moves to the sidelay device 7 based on the output of the potentiometer 26. Give orders.

In such a structure, the running paper 10 pulled out from the paper roll 8 supported by the paper feeding device is sent to the printing unit via the paper edge position control device. At this time, the paper edge detection device 30 detects one paper edge position of the running paper 10 fed to the printing unit, and applies the detection signal to the motor 25.

The motor 25 operates on the basis of a signal applied from the paper edge detecting device 30, and swings the roller 24 around the shaft 22 to change the traveling path of the traveling paper 10 to change the paper edge. Control the position so that it falls within the required range.

At this time, the swing amount of the roller 24 is determined by the lever 2
1, the timing pulley 28, the timing belt 29, and the timing pulley 27, and the potentiometer 26.
Is driven and its output is applied to the controller 31.

The control device 31 outputs a movement command to the side lay device 7 when the output of the potentiometer 26 exceeds a preset reference range. Then, the side lay device 7 moves the paper roll 8 in the axial direction thereof based on a command from the control device 31.

Then, since the traveling path of the traveling paper 10 passing through the paper edge detecting device 30 is moved in parallel by the same amount as the moving amount of the paper roll 8, the detection signal of the paper edge detecting device 30 changes,
The motor 25 operates to drive the roller 24 of the paper edge position control device.
Is swung to control the paper edge position of the traveling paper 10 to fall within a required range.

By repeating the above operation, when the traveling path of the traveling paper 10 is adjusted by the paper edge position control device,
The running paper 10 can be adjusted without applying excessive force.

[0019]

As described above, according to the present invention, the detecting means for detecting the swing angle of the paper edge position control device arranged in the infeed device of the rotary printing press, and the output of this detecting means are used. Since a control device for activating the side lay device provided at one end of the spider arm of the paper feeding device is provided, the traveling path of the traveling paper 10 fed to the printing unit is adjusted without applying excessive force to the traveling paper. can do. Therefore, it is possible to prevent breakage of the running paper and improve work efficiency.

[Brief description of drawings]

FIG. 1 is a plan view of a paper edge position control device according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a front view of FIG.

FIG. 4 is a plan view showing a paper edge position adjusting device according to the present invention.

FIG. 5 is a characteristic diagram showing an adjustment state in the present invention.

FIG. 6 is a front view showing a paper feeding device and an infeed device of a rotary printing press.

FIG. 7 is a side view of the sheet feeding device.

[Explanation of symbols]

 4 Spider Arm 7 Side Lay Device 26 Detection Means 31 Control Device

Claims (1)

[Claims] 1. A detection means for detecting a swing angle of a paper edge position control device arranged in an infeed device of a rotary printing machine, and based on an output of the detection means, one end of a spider arm of a paper feeding device. A paper edge position adjusting device in a rotary printing press, comprising a control device for operating the provided side lay device.