JPH0574839U - Running paper inspection device for rotary press - Google Patents

Abstract

(57) [Summary] [Structure] Detection units 3-1 to 3-n each including a plurality of detectors 3a to 3n arranged along a paper threading path for running paper.
And a detection unit that outputs a traveling paper "presence" signal when the traveling paper "presence" signal and the high speed operation signal of the rotary press are input from these detection units 3-1, ..., 3-n. Storage units 4-1, ..., 4-n for storing that the running paper is passing through the paper passing path, and the storage units 4-1, ..., 4-n
When the storage signal from the detector and the running paper “absence” signal from the detectors 3-1, ... and n. [Effect] The running paper can be inspected easily, quickly and surely.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for inspecting running paper breakage in a newspaper rotary press or the like, and in particular, paper running through a running paper passage path and a running paper breakage detection device in the same paper passing path. The present invention relates to a traveling paper inspection device for a rotary press that detects the pressure.

[0002]

[Prior Art]

 In a newspaper press, the running paper will break if the web is scratched or if the running paper has a strong pulling force. The breakage of running paper must not only increase the loss rate of paper but also delay the process time, so it must be detected reliably and promptly.

On the other hand, since printing of newspapers has been diversified in recent years, a paper threading route is selected according to the printing mode by providing a large number of paper threading routes and running paper branching sections. I was running paper through the route.

In the conventional apparatus for detecting the breakage of running paper under such a situation, a detector is arranged for each of a large number of paper passage paths, and a detector corresponding to the paper passage path is selected. There was a hand switch for this, and every time the paper threading route for passing the running paper was changed, the worker switched the hand switch to select the detector corresponding to the paper threading route.

Further, conventionally, a detector attached to a stay 14 by a bracket 13 as shown in FIGS. 3A and 3B has been used as a detector for detecting a break in running paper. The detector shown in FIG. 3 has the limit switch 10, and when the traveling paper S is not present, the actuator 11 is located at B in FIG. 3. Therefore, when the traveling paper is threaded, the rotary solenoid 12 is turned off. Then, the actuator 11 was made to stand by at A in FIG. At this time, the dog 15 is OF F without pushing the limit switch 10. Then, when the running of the running paper S is completed and printing is started, the rotary solenoid 12 is turned on to urge the actuator 11 toward the running paper S so that the running paper S is brought into contact with the running paper S. It was In this state, when the running paper S is cut, the actuator 11 moves to the position B and the limit switch 10 operates, so that the running paper S is cut.

[0006]

[Problems to be solved by the device]

 In the conventional running paper inspection device described above, the operator must operate the hand switch to select the detector corresponding to the paper passing path every time the running paper passing path is changed. There is a problem in that certainty is insufficient, and it is easy to forget to operate the hand switch, and lack in certainty.

Further, the confirmation of threading of the traveling paper through the paper passage path and the detection of the breakage of the traveling paper are performed by different means, for example, visual confirmation by an operator and detection by a detector. Therefore, in combination with the above-mentioned problem, there is a problem that both inspections cannot be continuously and automatically performed.

Further, in the conventional running paper inspection device using the limit switch 10 shown in FIG. 3 as a detector, the rotary solenoid 12 must be turned on and off every time the running paper S is threaded or printed. However, there is a problem that the control circuit becomes complicated. In particular, there is a problem that the control circuit becomes more complicated when there are many paper passage paths. In addition, there were drawbacks such as restrictions on machine maintenance and installation due to the structure of the device.

The present invention has been made in view of the above problems, and makes it possible to easily inspect running paper by automatically checking the paper thread and detecting the paper break with the same detector. The objective is to provide a running paper inspection device for rotary presses that enables quick and reliable operation, requires no maintenance, has a simple structure, and is inexpensive to manufacture.

[0010]

[Means for Solving the Problems]

 In order to achieve the above object, a running paper inspection device for a rotary press according to the present invention comprises a detecting section including a detector arranged in a paper threading path of the running paper, a running paper “present” signal from the detecting section, and the above-mentioned wheel. A storage unit that stores that the running paper is passing through the paper passing path provided with the detection unit when a predetermined operating speed signal of the turning machine is input, a storage signal from the storage unit, and the detection unit And a determination unit that outputs a running paper cut signal when a running paper “no” signal is input from the running paper, and if necessary, the above detection units are provided along the paper passing path. Of the plurality of detectors, and when the traveling paper “presence” signal is output from all of the plurality of detectors, the storage unit inputs the traveling paper “presence” signal. As a configuration, an ultrasonic sensor is used.

[0011]

【Example】

 An embodiment of the running paper inspection device in the rotary press of the present invention will be described below. FIG. 1 shows a block diagram of an embodiment of the present invention. In the figure, 1 is a rotary printing machine for newspapers and the like. Reference numeral 2 denotes a print control unit of the rotary press. For example, when the rotary press 1 is printing at a speed of 10,000 copies or more per hour, a signal "1" is output and a speed of less than 10,000 copies per hour is output. The signal "0" is output when printing is performed with.

Reference numerals 3a to 3n are non-contact type detectors such as ultrasonic sensors, and reference numerals 3-1 to 3n are traveling paper detection units in which the detectors 3a to 3n are combined depending on the type of the paper passing path. , It is provided for each paper threading route. As shown in FIG. 2, the detector 3a is attached to the stay 14 of the rotary press with a bracket 13 at an appropriate position facing the traveling paper S. The detection units 3a to 3n output a "1" signal that means "there is" the running paper when all the detectors combined according to the type of the paper passing path detect the running paper S, and the paper passing path is detected. When one or a plurality of detectors combined depending on the type does not detect the running paper S 1, it outputs a “0” signal which means “no running paper”.

The detection units 3-1 to 3 -n may be composed of any one of the detectors 3 a to 3 n, but the detectors 3 a to 3 n may be arranged along any one paper passing path. It may be arranged at each of a plurality of positions, and the signal "1" may be output when all of the plurality of detectors 3a to 3n detect the running paper S. By doing so, it is possible to detect with high accuracy that the traveling paper S is passing through the threading path.

Since the rotary press is configured by the number of pages to be printed, the printing paper surface, etc., the paper passing path is patterned into a paper passing path corresponding to the construction of the rotary press, and the combination of detectors is determined by the paper passing path. It Therefore, the pattern selection number 6 is input in advance before the paper is threaded, and it is determined whether the traveling paper S is in the paper threading path depending on whether the detection signals of all the detectors corresponding to the combination are input before the printing is started. judge.

If the ultrasonic sensors described above are used as the detectors 3a to 3n, the influence of paper dust and paper surface of the running paper is not exerted, and the position adjustment and maintenance work at the time of mounting the sensor are facilitated.

Reference numerals 4-1 to 4-n denote storage units, which are used by the detection units 3-1 to 3-n determined by the print speed signal 8 and the pattern selection signal output from the print control unit 2. When the signal "1" output from either one is input, the detection signal having the paper threading path is stored for paper break detection and the storage signal "1" is output. The storage units 4-1, ..., 4-n can be composed of, for example, an AND circuit 4a and an S-RFF (set / reset / flip-flop) circuit 4b.

Numerals 5-1 to 5n are determination sections, which are one of the traveling signal detectors 3a to 3n and the storage signal "1" output from the storage sections 4-1 to 4n. When the signal "0" indicating that the traveling paper is "absent" is input from the printer, it is determined that the traveling paper S is broken, and the signal "1" is output. The determination units 5-1 to 5, -n can be composed of, for example, an inverter circuit 5a and an AND circuit 5b. The paper break detection signal 9 output from the judgment units 5-1 to 5-n is a paper break detection signal for taking necessary measures for paper break such as the operation of the paper cutter or the stop of the rotary press. 9 is input.

Next, the operation of the apparatus of this embodiment will be described. First, a paper threading path is selected according to the content of printing. Next, the running paper is passed through the selected paper threading route while the rotary press is operated at a low speed of less than 10,000 copies / hour. When the running paper is passed through the paper passage route, the detection unit 3-x arranged along the paper passage route outputs the signal "1", but the print control unit 2 outputs the signal "0". Therefore, the storage unit 4 does not store the data.

After that, when the printing speed of the rotary press is set to a high speed of 10,000 copies / hour or more to start printing, the print control unit 2 outputs a signal “1”. As a result, the storage unit 4-x stores the information, and the sheet break can be detected.

When the rotary press operates at a high speed of 10,000 copies / hour or more, the signal “1” is output to storage units other than the storage unit 4-x. Since the signal "1" of the running paper "present" is not input from each of the detectors (the detectors other than the detector 3-x), it is impossible to inspect the paper break.

The storage unit 4-x, which stores that the paper threading has been performed, outputs the storage signal “1” to the AND circuit 5b of the determination unit 5-x. In this state, when the running paper detection unit 3-x detects a break in the running paper S, the running paper detection unit 3-x outputs a signal "0". This signal "0" is input to the determination unit 5-x and inverted by the inverter circuit 5a and input to the upper AND circuit 5b. As a result, the AND circuit 5b, that is, the determination unit 5-x outputs the running paper cut signal "1".

As described above, the running paper detection device of the present embodiment confirms and stores the paper threading path through which the running paper has passed, and the same paper break inspection of the stored paper threading path is detected by the same detection. Automatically using a vessel.

The present invention is not limited to the above-described embodiments, and includes appropriate modifications within the scope of the invention. For example, a storage unit or a determination unit configured by a transistor circuit, applied to a rotary press having a single paper feed path, and a predetermined operating speed signal of the rotary press other than 10,000 copies / hour or less This includes those that output at an arbitrary speed, those that use a distance-measuring photoelectric detector as the detector that constitutes the detector, and so on.

[0024]

[Effect of the device]

 As described above, according to the running paper inspection apparatus for a rotary press of the present invention, running paper can be inspected easily, quickly and reliably.

[Brief description of drawings]

FIG. 1 is a block diagram of an apparatus according to an embodiment of the present invention.

FIG. 2 shows an example of a detector in an apparatus according to an embodiment of the present invention.

FIG. 3 (a) is a front view of an example of a detector in an example of a conventional device, and FIG. 3 (b) is a side view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rotary press 2 ... Print control part 3-1,-, 3-n ... Detection part 4-1,-, 4-n ... Storage part 5-1,-, 5-n ... Judgment part 6 ... Pattern selection signal 7 ... Paper thread determination signal 8 ... Printing speed signal 9 ... Paper break detection signal

Claims (3)

[Scope of utility model registration request] 1. A detection unit comprising a detector arranged in a paper threading path of the running paper, and when a running paper “present” signal and a predetermined operating speed signal of the rotary press are inputted from the detecting unit, When a storage unit that stores that the traveling paper is passing through the paper passage path provided with the detection unit and a storage signal from the storage unit and a traveling paper “none” signal from the detection unit are input, A running paper inspection device for a rotary press, comprising: a determination unit that determines that the running paper is broken. 2. The detection unit is formed of a plurality of detectors arranged along a paper passage path, and when the running paper “present” signal is output from all of the plurality of detectors, the memory is stored. 2. The running paper inspection device for a rotary press according to claim 1, wherein the section inputs a signal indicating that the running paper is "present". 3. The running paper inspection device for a rotary press according to claim 1, wherein the detector constituting the detection unit is an ultrasonic sensor.