JP2647614B2 - Automatic guide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic guide device applied to a paper machine.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show a conventional automatic guide device. FIG. 4 shows an automatic guide device for detecting the position in the width direction of a belt and moving one end of a guide roll in the front-rear direction. Is provided, and one end a of a shaft 8 a of the guide roll 8 is rotatably supported by a suspension arm 15. Further, the suspension arm 15 is connected to the rod 7 a of the diaphragm 7 and the spring 6, and the palm 5 contacts the edge of the belt 4, and is linked with the air pressure adjusting valve 3. The air pressure regulating valve 3 linked to the diaphragm 7 and the palm 5 is connected by an air pipe 9 and also to an air source.

In the above configuration, the palm 5 pressed against the edge of the running belt 4 is pushed forward as the running position of the belt 4 moves in the direction of the palm 5, and the air pressure adjustment at the base thereof is performed. The valve 3 is gradually opened to reduce the pressure of the air pipe 9 connected to the valve. On the other hand, one end a of the guide roll 8 is pulled toward the stand 10 by the spring 6 and, at the same time, the stand 1 is moved by the diaphragm 7.
When the pressure of the air pipe 9 connected to the diaphragm 7 decreases, one end a of the guide roll 8 moves to the stand 10 side, and as a result, moves the belt 4 away from the palm 5. Acts in the direction. Conversely, when the belt 4 moves away from the palm 5, the above operation is reversed, and the belt 4 acts in a direction to approach the palm 5. As described above, the belt 4 is guided to run at a certain position in the width direction.

FIG. 5 shows the palm 5 and the air pressure regulating valve 3 shown in FIG.
Instead of this, a detector 1 for detecting the end of the belt 4 in a non-contact manner is provided, and one end a of the guide roll 8 is moved by the air motor 12 and the screw shaft 11. In the method of FIG. 5, the controller 2 controls the guide operation described based on FIG. That is, the air motor 12 is rotated according to the position of the belt 4 in the width direction obtained by the detector 1, and the guide operation as described above is realized.

[0005]

In recent years, the speed of a paper machine has been steadily increasing, and when the belt 4 and the palm 5 are in contact with each other as in the conventional automatic guide device shown in FIG.
The belt 4 and the palm 5 are severely worn, and have a disadvantage of shortening their life. In addition, damage to movable parts such as a connection part between the palm 5 and the air pressure regulating valve 3 cannot be avoided.
The fact that the palm and the palm were in contact with each other included the danger of an accident. On the other hand, in the conventional automatic guide device shown in FIG. 5, although there is no contact between the belt 4 and the palm 5, it is necessary to perform electric signal processing. For example, there is a problem that control becomes impossible when a piece of paper or the like enters between the sheets. The present invention seeks to solve the above-mentioned conventional problems.

[0006]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an automatic guide device for a running endless belt, comprising: a detecting portion for detecting the widthwise position of the belt in a non-contact manner; is installed in the width direction, and palm interlocked with the pneumatic control valve, a solenoid valve connected in the same tire pressure regulating valve and the air pipe, comprising an actuator stroke is determined by the air pressure to one end, the one end KakaKa Suspended arm
And can be moved in the running direction of the endless belt, and
A guide roll for supporting the belt, against the detector
And a controller for controlling the air pressure of the actuator, and in the event of an abnormality such as a power failure of the controller, the solenoid valve is automatically switched by a spring, and the air pressure adjusting valve and the actuator are linked to the palm. Is provided with an air circuit directly connected thereto, and this is used as a means for solving the problem.

[0007]

According to the present invention, the position in the width direction of the belt is normally detected by the detector in a non-contact manner, and the palm is in a position not in contact with the belt. When an abnormality occurs, the detector is not used and is controlled by the palm and the air pressure regulating valve. At this time, the running position of the belt in the width direction is stabilized toward the palm side by the distance X. Also, when switching from the normal state to the state at the time of occurrence of an abnormality, the pressure of the air pipe and the diaphragm increases, and one end a of the guide roll moves in a direction away from the stand, and as a result, the belt approaches the palm. Start contact.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an embodiment of the present invention; FIG. In the embodiments of the present invention, the same parts as those in the conventional example shown in FIGS. 4 and 5 will be described using the same reference numerals.
In FIG. 1, an ultrasonic sensor for detecting the width direction position of the belt 4 in a non-contact manner, that is, a detector 1 includes a controller 2
And sends an electric signal indicating the position of the belt 4 in the width direction. The controller 2 having received the signal converts the signal into air pressure by the electropneumatic converter, sends the signal to the actuator for operating the guide roll 8, that is, the diaphragm 7, and adjusts the belt 4 so as to be at a fixed position. Further FIG.
The structure and operation of the automatic guide device will be described in detail based on
Then, one of the shafts 8a of the guide roll 8 supporting the belt 4 is
The end a is rotatably suspended by a suspension arm 15.
Have been. The suspension arm 15 is a rod 7 of the diaphragm 7.
a and the spring 6 at the center and the lower end.
Arm 5 is usually installed in the width direction without contacting the belt 4
And is linked with the air pressure regulating valve 3. Also Diaph
The air pressure regulating valve 3 linked to the ram 7 and the palm 5
It is connected by a pipe 9 and is connected to an air source.
The stroke of the diaphragm 7 is determined by air pressure. What
Contact 10 for suspension arm 15, diaphragm 7, spring 6
It is a stand. One end a of the guide roll 8 is
At the same time as the
It is pushed out of the stand 10 by the
Balanced. Here, when the belt 4 approaches the detector 1,
Reduce the pressure of the air pipe 9 connected to the diaphragm 7
And one end a of the guide roll 8 is
It is drawn to the 10 side. That is, one end of the guide roll 8
a is the stand 10 side with respect to the traveling direction of the belt 4, that is,
The belt 4 rides at right angles over the guide roll 8
Move away from the detector 1. That is, when the belt 4 approaches the detector 1 as shown in the lower view of FIG. 3, by lowering the pressure of the diaphragm 7, one end a of the guide roll 8 moves to the stand 10 side. 3 away from the detector 1 as shown in the upper diagram. In the opposite case, the pressure of the diaphragm 7 is increased to bring the belt 4 closer to the detector 1.

Normally, in the lateral direction not in contact with the belt 4,
Is provided with a palm 5 interlocked with the pneumatic control valve 3, or pieces of paper included on the between the belt 4 and the detector 1, the detector electrical DOO
If the detected value shows an error due to mechanical trouble such as
The controller turns off the electric circuit of the solenoid valve 13
In the event of a power failure, disconnection, etc. , as shown in FIG. 2, the solenoid valve 13 is automatically switched, and the air pressure regulating valve 3 linked to the palm 5 and the diaphragm 7 are directly connected. Guide operation is performed.

[0010]

As described in detail above, according to the present invention, by detecting the position in the width direction of the belt in a non-contact manner, damage to the end of the belt is eliminated, and an emergency such as a power failure or a paper sheet obstruction is prevented. At times, it is backed up by a guide mechanism that performs purely mechanical operation, so that reliability and operation efficiency can be greatly improved.

[Brief description of the drawings]

FIG. 1 is a perspective view of an automatic guide device according to an embodiment of the present invention.

FIG. 2 is a system diagram of FIG. 1;

FIG. 3 is an operation explanatory view of the automatic guide device of FIG. 1;

FIG. 4 is a perspective view showing a conventional automatic guide device.

FIG. 5 is a perspective view showing another conventional automatic guide device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Detector 2 Controller 3 Air pressure regulating valve 4 Belt 5 Palm 6 Spring 7 Diaphragm 8 Guide roll 9 Air piping 10 Stand 13 Solenoid valve

Continuation of the front page (72) Inventor Hirofumi Asada 5007 Itozakicho, Mihara-shi, Hiroshima Pref. Mihara Works, Mitsubishi Heavy Industries, Ltd. JP, Y1)

Claims (2)

(57) [Claims] In an automatic guide device for a running endless belt, a detection unit for detecting a position in a width direction of the belt in a non-contact manner, and usually installed in a width direction without contacting the belt, and provided in an air pressure adjusting valve. and interlocking the palm, and the solenoid valve connected with the air pressure control valve and the air pipe, comprising an actuator with air pressure stroke is determined on one end, is the same end
It is suspended by the suspension arm and moved in the running direction of the endless belt.
A guide roll that is movable and supports the belt, and is connected to the detection unit , and includes a controller that controls air pressure of the actuator, and the controller is configured to control the air pressure when the detection value of the detection unit is abnormal. An automatic guide device, wherein the electromagnetic valve is switched so as to directly connect an air pressure adjusting valve linked to a palm and the actuator. 2. The automatic guide device according to claim 1, wherein in the event of an abnormality such as a power failure of the controller, the solenoid valve is automatically switched by a spring, and the air pressure adjusting valve linked to the palm is directly connected to the actuator. An automatic guide device comprising an air circuit.