JP2906191B2 - Auxiliary equipment for folding machine of rotary printing press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary device for a rotary press such as an offset rotary press.

[0002]

2. Description of the Related Art With respect to a conventional folding machine, a fifth example will be described in which a signature is produced by combining two webs into one halfway.
Explaining with reference to the drawing, when the webs 3 and 3 are introduced from the front and rear devices (not shown) from the entrance which is one side of the triangle of the triangular plate formers 1 and 1 as shown by an arrow a, and exit the vertex which is the exit facing the one side, The web 3B is folded in the running direction of the webs 3, 3 to form a web 3B via guide rollers 4A to 4C.
Will be sent to In the cutting cylinder 5, the web 3B is cut at a predetermined length in a direction perpendicular to the running direction and the signature 3 is cut.
C and then guided between the folding cylinder 6 and the bite cylinder 7.

The two bodies 6 and 7 rotate in contact with each other,
The signature 3C is further folded in parallel to the cutting direction, and is discharged as a signature 9 onto the feed belt 8 rotating endlessly. The signature 9 is located below the feed belt 8 and is dropped between the respective blades of the impeller device 10 rotating with a plurality of blades, and is further discharged onto a conveyor 11 located below the impeller device 10. It has become.

The signature 3C is attached to the folding cylinder 6 so that the signature 3C does not flutter on the surface of the folding cylinder 6.
A brush device 35 is provided for pressing against the brush. Further, the impeller device 10 is provided with a safety cover 36 for danger prevention. The brush device 35 and the cover 36 are detached from the running line of the signature 3B at the time of starting the operation of the folding machine, and the safety cover 36 is opened to see the operation state of the impeller device 10, The folding condition of the signature 9 is visually inspected, and after confirming that the folding condition has become stable, the operation of the machine is stopped once, and the brush device 35 is manually set again to be pressed against the body 6. At the same time, the cover 36 is closed on the impeller device 10. The degree of folding depends on the width of the web 3A. If the predetermined web width or the web width is good, but the running position is off, the folding degree will be poor.

[0005] In the conventional example, the case where the web has two lines has been described. Of course, one line may be used, and in the case of two lines, the two webs are superposed on one another and guided to the cutting cylinder. It can be said that it is difficult to control.

[0006]

As described above, in the case of the prior art, after starting the operation, the folding state must be visually checked, the machine stopped, and the safety covers of the brush and the impeller must be closed. In the case where a plurality of persons are working, these tasks are dangerous and, naturally, have to be started up for real operation of the machine, which is inefficient.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to determine whether the folding condition is good, that is, whether the width of the folded web is normal or abnormal. Automatically detects and removes the brush on the outer circumference of the folding cylinder and the safety cover of the impeller to improve the efficiency at the start of machine operation, and to prevent danger,
An object of the present invention is to provide an auxiliary device for a rotary printing press folding machine that can be operated without stopping the operation of the machine.

[0008]

In order to achieve the above object, an auxiliary device for a folding machine in a rotary printing press according to the present invention guides a web to a former which is a triangular plate, folds the web in a running direction, and then folds the web in two. A folding cylinder and a biting cylinder provided with a brush device for guiding the signature to the cutting cylinder, cutting the signature to a predetermined length with the cutting cylinder to form a signature, and rotating the signature in contact with each other, and pressing the signature against the body surface. Rotary printing, which further folds the signature in the running direction, supplies the signature to an impeller device provided with a safety cover, and discharges the folded signature on a conveyor provided at a lower portion of the impeller. Detecting means for detecting whether or not the width of the folded web is at a predetermined set width, or whether or not the web is at a predetermined traveling position; ,Previous Web width detected by the detecting means,
Alternatively, when the traveling position is out of the set range, a signal transmission device that issues an abnormal signal is provided, and the attachment / detachment of the brush device to / from the folding cylinder and the opening / closing switching of the safety cover to the impeller device are performed according to the presence or absence of the signal. A control device for controlling an electromagnetic switching valve, an actuator for driving a brush device for pressing a signature on a folding cylinder surface by switching the electromagnetic switching valve, or separating from the folding cylinder surface, and an impeller device for switching the switching valve And a safety cover driving actuator for opening and closing the safety cover.

In this case, the web width and travel position detecting means are composed of two photoelectric sensors disposed at a predetermined interval on one end surface of a cylindrical body rotatably provided with respect to the mounting bracket. Such a configuration is preferable.

[0010]

When the width of the signature is out of the set range or the running position of the signature is out of the set range, an abnormal signal is transmitted and the brush engaging with the outer periphery of the signature body is automatically detected. Miss,
The safety cover of the signature discharge impeller is automatically opened, and if the signature width is within the set range or the set travel position, the brush is engaged with the folding drum surface, and the safety cover is closed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the description of this embodiment, the same members as those of the conventional example are denoted by the same reference numerals, and the description thereof will be omitted, and only different points from the conventional device will be described.

Webs 3, 3 printed by a printing unit (not shown)
Form webs 3A, 3A folded in two by formers 1, 1 which are triangular plates. While the webs 3A, 3A are being fed into the cutting cylinder 5 via the guide rollers 4A to 4C, the web width detection device 15 detects the web width W and whether the web is at a predetermined traveling position or is distorted. As shown in FIG. 3, the web width detecting device 15 is provided with a bracket 21 slidably mounted on a shaft 25 perpendicular to the running direction of the web 3A supported by a frame (not shown). A photoelectric unit 1 comprising a cylindrical body 20 having a pair of photoelectric sensors 17 and 18 separated by 2a
6 and 16 are mounted in a pair, and the same pair of photoelectric units 1
Between 6 and 16, the position on the axis 25 can be changed by the web width.

The cylindrical body 20 is attached to the bracket 21 so as to rotate about an axis at a predetermined angle θ, and therefore, as shown in FIG. The distance can be adjusted between 2a and 2a cos θ, and can be finely adjusted by the web width.

Since the web width and travel position detecting device 15 is configured as described above, both edges of the web 3A are connected to the photoelectric units 16, 16 as shown in FIG.
4B, the web width W is at a predetermined web width when the sensor passes between the pair of photoelectric sensors 17 and 18 at the same time.
In the case of (c), the width W is a predetermined dimension but is shifted to the left and right, and one of the pair of photoelectric units 16 and 16 has one of the photoelectric sensors 17 and 18 turned off at the same time. Also, as shown in FIGS. 4D and 4E, the web width becomes W 'which is larger than the predetermined dimension W, and one of the photoelectric sensors 17, 18 of the pair of photoelectric units 16, 16 is simultaneously turned off. 4 (f), the pair of photoelectric units 16, 1
When all of the photoelectric sensors 17 and 18 are in the OFF state, an abnormal signal is output. Further, the processes after the cutting cylinder 5 are the same as the conventional example, and the brush device 14 provided on the folding cylinder 6 and the safety cover 12 of the impeller device 10 are automatically operated.

Next, the brush device 14 and the safety cover 12 will be described with reference to FIG. 2. The brush device 14 is attached to and detached from the surface of the folding cylinder 6 by an air cylinder 31. The web width W detected by the web width detection device 15 is sent to the control device 40, and the determination device (not shown) in the control device 40 is opened and closed as described with reference to FIG. Various cases are determined, and the presence or absence of an abnormal signal is determined. If there is an abnormal signal, the pressure position of the electromagnetic switching valve 41 is excited, and the air pressure of the air pressure source 42 is reduced by the air cylinders 31 and 4.
3 and act on the pneumatic chambers 44 and 45 of the brush device 14.
From the surface of the folding cylinder 6 so that the safety cover 12 is opened as indicated by a dotted line 12 '. When the control device 40 does not generate an abnormal signal, each position of the electromagnetic switching valve 41 is excited and the air pressure of the air pressure source 42 is reduced to the air cylinders 31 and 4.
3 and act on the pneumatic chambers 46 and 47 of the brush device 1
4 is pressed against the surface of the folding drum 6 and the safety cover 12 is pressed.
Operates to cover the impeller device 10.

[0016]

As described above, according to the present invention, the width of the signature is automatically detected and the safety cover of the brush on the outer circumference of the folding drum and the impeller is detached depending on whether the signature is normal or not. There is an effect that it is possible to provide an auxiliary device for a folding machine of a rotary printing press which can improve the efficiency at the time of printing and can prevent danger.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an arrangement of auxiliary devices in a folder of a rotary printing press according to an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of an auxiliary device in the folder of the rotary printing press according to the embodiment of the present invention.

FIG. 3 is a detailed explanatory view of a photoelectric unit of the web detecting device in FIG. 1;

FIG. 4 is a diagram showing the relationship between the photoelectric unit of the web detection device in FIG. 1 and the positions of both side edges of the web.

FIG. 5 is a schematic explanatory view showing a conventional example.

[Explanation of symbols]

 3 Web 4B Guide roller 16 Photoelectric unit 17 Photoelectric sensor 18 Photoelectric sensor

Claims (2)

(57) [Claims] 1. Guide the web to a former which is a triangular plate,
Fold the web in the running direction, then guide it to the cutting cylinder,
After cutting to a predetermined length with the same cutting cylinder to make a signature, rotating in contact with each other, provided with a brush device for pressing the signature against the trunk surface, guided between the folding cylinder and the bite cylinder, A rotary printing press folding machine that further folds the signature in the traveling direction, supplies the signature to an impeller device provided with a safety cover, and discharges the folded signature onto a conveyor provided at a lower portion of the impeller device. In the auxiliary device according to the above, detecting means for detecting whether or not the width of the folded web is at a predetermined set width, or whether or not the web is at a predetermined traveling position, and the detecting means Has a signal transmitting device for generating an abnormal signal when the detected web width or the running position is out of the set range. A control device for controlling an electromagnetic switching valve for switching between opening and closing; a brush device driving actuator for pressing a signature to a folding body surface or detaching from the folding cylinder surface by switching the electromagnetic switching valve; An auxiliary device for a folder of a rotary printing press, comprising an actuator for driving a safety cover that opens and closes a safety cover of an impeller device by switching a valve. 2. The web width and travel position detecting means according to claim 1, wherein the web width and travel position detecting means are disposed at a predetermined interval on one end surface of a cylindrical body rotatably provided with respect to the mounting bracket.
An auxiliary device for a folder of a rotary printing press, comprising: a plurality of photoelectric sensors.