JPS6223695B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement in a method for correcting the deviation of a sheet-like running object. The chipped conveyor belt is used in this type of industrial field to smoothly and normally guide paper through the center.

(Conventional example) In the past, many devices and methods for correcting the deviation of running objects have been developed in order to prevent meandering of running fabrics, but in all cases, the A detection mechanism is used.

(Problems to be solved by the invention) However, in the above-mentioned prior art,
The following disadvantages and technical problems occurred. That is, since the deviation detection mechanism is fixedly arranged at a fixed position, the deviation of the traveling object detected by the fixed detection mechanism is transmitted to the correction mechanism, and when the correction mechanism is operated, the deviation can be corrected quickly. This is a temporary correction, and there is a strong tendency for large corrections to be made at once, so if the running object is made of woven or knitted fabric that can adapt to deformation, this will hardly cause any problems, but compared to these, it is quite a problem. In the case of conveyor belts, paper, etc., which are hard and rigid and lack deformation adaptability, it is difficult to achieve smooth and normal deviation correction.

This invention was developed and completed as a result of various studies to address the above problems, and its main purpose is to develop a conveyor belt that is harder and more rigid than ordinary fabrics and lacks deformation adaptability. An object of the present invention is to provide a method for correcting the deviation of a sheet-like traveling object, which allows the paper to travel while being guided smoothly and properly in the center.

(Means for Solving the Problems) The present invention employs the following configuration in order to solve the above-mentioned conventional problems. That is, the deviation of the sheet-like traveling object is detected by the detection mechanism at the edge position and transmitted to the deviation correction mechanism, and the operation of the correction mechanism causes the guide roller of the traveling object attached to the frame supported by the pivot shaft to be adjusted. When rotating and angularly changing the rotation angle in the correction direction using the pivot shaft as a fulcrum, at the same time, at a position away from the rotation angular fulcrum of the guide roller, the detection mechanism connected to the frame of the guide roller via a link mechanism is connected to the link mechanism. The sheet-shaped sheet is characterized in that the deviation of the traveling object is corrected in small increments with high precision by moving the detection mechanism in the direction of deviation of the traveling object by a mechanism and always moving the detection mechanism close to the edge of the traveling object. This invention relates to a method for correcting the deviation of a running object.

(Function) According to the configuration of the present invention, the detection mechanism can always be placed at the required position closest to the most desirable edge position for detecting the edge position of the moving object, and therefore the correction mechanism by the detection mechanism can be turned on. -OFF-ON control operation is always carried out sharply and accurately, making it possible to correct the deviation of the moving object in small increments with high precision.

(Embodiment) The details of this invention will be explained below based on the embodiment drawings. 1 is a machine base, 2 and 3 are mounted on the machine base 1 through a combination mounting plate 4 while maintaining a required interval. The guide rollers are arranged in parallel, and the intermediate part of the frame of one guide roller 2 is supported by a pivot shaft 5 installed upright on the machine base 1, so that the free rotation of the guide rollers 2 and 3 is not hindered. The guide rollers are also configured to be able to rotate and change the angle as required. Reference numeral 6 denotes a known edge position detection mechanism located at the edge passing portion of the running object (in this embodiment, an endless conveyor belt) R passing through the guide rollers 2 and 3 and close to the guide roller 3. In this embodiment, an air valve mechanism 7 is provided for supplying and blocking compressed air to a deviation correcting mechanism consisting of an air cylinder, which will be described later, and an air valve mechanism 7 for supplying and blocking compressed air to a deflection correcting mechanism consisting of an air cylinder, which will be described later, and an air valve mechanism 7 for supplying compressed air to a deviation correcting mechanism consisting of an air cylinder to be described later. flow path
It consists of a touch lever 8 which performs the function of switching between OUT and IN, or completely blocking it, and this touch lever 8 is normally pulled inward by a spring 9 at a predetermined angle toward the traveling object R side. The detection mechanism 6 is connected to the frame of the guide roller 2 through a link mechanism 10 at a position off the middle (pivot shaft part) of the guide roller 2, and when the guide roller rotates to the left or right. , pivot joint 1
The detection mechanism 6 is configured to rotate outwardly or inwardly using the detecting mechanism 1 as a fulcrum. 12 is the detection mechanism 6
It is a deviation correction mechanism consisting of an air cylinder arranged outside the guide roller on the side where the piston rod 14 of the cylinder body 13 is arranged, and the protruding end of the piston rod 14 of the cylinder body 13 is pivotally connected to the combination mounting plate 4 of the guide rollers 2 and 3. Furthermore, as shown in FIG.
The air passage a of the air valve mechanism 7 is opened to supply compressed air into the cylinder body 13 on the piston rod 14 side, and the air is exhausted from the air passage b. R
When the ear end of the detection mechanism 6 and the touch lever 8 deviate from the neutral position and deviate inward, the air flow path b of the air valve mechanism 7 is opened and the anti-piston rod 1
Furthermore, as shown in FIG. The air cylinder and the air valve mechanism are communicated with each other through an air passage so that the air cylinder and the air valve mechanism are not supplied with compressed air into the cylinder body 13 by blocking the passage when the cylinder body 13 maintains the neutral position.

Next, based on the example of the device configured as above,
To explain one example of the method for correcting the deviation of a sheet-like traveling object according to the present invention, an endless conveyor belt is used for the traveling object R, and although not shown, the traveling object R is wrapped around a pair of transfer rollers, and the approximately intermediate portion thereof is wrapped around a pair of transfer rollers. It is passed through the arranged guide rollers 2 and 3 vertically as shown in the figure, and is run and rotated in the direction of the arrow.

As shown in FIG. 1, when the belt is running normally without deviation, the edge of the belt keeps the touch lever 8 of the detection mechanism 6 in the neutral position and moves the lever. Since the deflection correction mechanism 12 consisting of an air cylinder is in contact with
However, as shown in Figure 3, the belt deviates toward the detection mechanism. When the ear end pushes the touch lever 8 outward against the spring 9, the flow path a of the valve mechanism 7 is opened as described above, so that the compressed air from the compressed air source is transferred to the piston rod 14 in the air cylinder. The piston is moved backward, and the guide rollers 2 and 3 are rotated counterclockwise as shown in FIG. 3, causing the belt to move toward the opposite side (inside) of the detection mechanism. At the same time as the detection mechanism 6 enters the position, the detection mechanism 6 is rotated outward about the pivot portion 11 via the link mechanism 10, and moved to follow the deflection direction of the edge of the belt to prepare the next detection position.

Next, as shown in FIG. 4, when the belt deviates toward the side opposite to the detection mechanism and its ear end separates from the touch lever 8, the touch lever 8 is elastically pulled by the spring 9 and moves inward, as described above. Valve mechanism 7
Since the flow path b is opened, the compressed air from the compressed air source is supplied to the side opposite to the piston rod 14 in the air cylinder to advance the piston, thus moving the guide rollers 2 and 3 clockwise toward FIG. At the same time, the detection mechanism 6 is rotated inward through the link mechanism 10 about the pivot portion 11 as a fulcrum, and the belt is rotated. It moves in the direction of deviation of the ear end and prepares for the next deviation detection.

As described above, in this embodiment, the detection mechanism 6 is composed of the air valve mechanism 7 and the touch lever 8, and the deviation correction mechanism 12 is composed of an air cylinder, and the deviation detected by the detection mechanism is transmitted to the air cylinder. The movement of the piston back and forth causes the guide rollers 2 and 3 to rotate in the direction of correction of deviation, and at the same time, the movement of the angle movement causes the detection mechanism to move in the direction of deviation of the edge of the belt via the link mechanism 10. Since the detection mechanism is moved to follow, the structure is simple and the operation is reliable.In particular, by moving the detection mechanism to follow the direction of deviation of the edge of the running object, the detection mechanism is always positioned at a desired predetermined position of the edge of the moving object. Since the valves are placed close to each other, the detection mechanism allows the valve to be turned on and off.
The ON control operation is always performed uniformly, sharply and accurately, and the desired deviation of the running endless belt can be corrected in small increments with high precision.

Furthermore, the technical means for carrying out the present invention are not limited to the above-mentioned embodiments. For example, instead of the above-mentioned detection mechanism, an air jet sensor equipped with two blow-off ports may be used. Increase the signal air and open/close the air valve to turn it on and off.
-ON-ON control, or use touch lever or phototube to turn ON-OFF by electrical signal.
Control may be performed by operating an ON switch to directly drive the motor, or if a solenoid valve is used, control may be performed by a cylinder. Furthermore, instead of the deviation correction mechanism (guide roller angle changing drive mechanism) consisting of an air cylinder in the above embodiment, a hydraulic cylinder may be used, or a ball screw mechanism rotated by a motor M may be used as shown in FIG. Pivotally attach the nut member RO screwed onto the mounting plate 4 of the guide rollers 2 and 3, or attach the chain rotated by the motor M to the mounting plate 4 of the guide rollers 2 and 3 as shown in It is also possible to employ means for pivotally mounting the guide rollers 2 and 3 and moving the nut member R or the chainr forward and backward by forward and reverse rotation of the motor M to change the rotational angle of the guide rollers 2 and 3.

(Effects of the Invention) As described above, the present invention transmits the deviation of the sheet-like traveling object detected by the detection mechanism to the correction mechanism, and moves the guide roller attached to the frame supported by the pivot shaft in the deviation correction direction. When the object is rotated, the detection mechanism is simultaneously moved in the direction of deviation of the edge of the object through the link mechanism arranged in the above-mentioned specific manner. When detecting the position of the edge of an object, it can always be placed at the required position close to the most desirable edge, so the ON-OFF-ON control of the correction mechanism by the detection mechanism is always carried out sharply and accurately. It has the great advantage of being able to correct the deviation of objects in small increments with high precision, so it is possible to smoothly correct the deviation of moving objects that can adapt to deformation, such as woven fabrics, knitted fabrics, etc., without damaging the fabric. Conveyor belts, which are considerably harder and more rigid than fabrics and lack flexibility in deformation,
It has unique features that make it particularly suitable for smooth and highly accurate deviation correction of moving objects such as paper.

[Brief explanation of the drawing]

The drawings show an example of an apparatus for carrying out the invention, in which FIG. 1 is a plan view, FIG. 2 is a side view,
Figures 3 and 4 are explanatory diagrams showing the state of detecting and correcting the deviation of a running object, Figure 5 is a plan view of the detection mechanism, and Figures A, B, and C of Figure 6 show the air valve and cylinder, respectively. FIGS. 7 and 8 are schematic plan views showing other deviation correction mechanisms (guide roller angle changing drive mechanisms), respectively. (Explanation of symbols), 2, 3...Guide roller, 5...
Pivot axis, 6...detection mechanism, 10...link mechanism,
12...Displacement correction mechanism, R...Sheet-like running object.

Claims (1)

[Claims] 1. The deviation of the sheet-like traveling object is detected by the edge end position detection mechanism and transmitted to the deviation correction mechanism, and the operation of the correction mechanism causes the guide roller of the traveling object attached to the frame supported by the pivot shaft to be adjusted. When rotating in the correction direction using the pivot axis as a fulcrum,
At the same time, at a position away from the rotation angle fulcrum of the guide roller, the detection mechanism connected to the frame of the guide roller via a link mechanism is moved by the link mechanism in the direction of deviation of the traveling object, and the detection mechanism is moved. A method for correcting the deviation of a sheet-like moving object, characterized in that the deviation of the moving object is corrected in small increments with high precision by constantly moving the object close to the edge of the object.