TW201704917A - Web meandering control device and control method - Google Patents

Abstract

In the present invention, a web end (1E), which is an end in the width direction perpendicular to the travel direction of a web (1), and a picture end (1A1), which is an end in the width direction of each picture (1A) repeatedly printed along the travel direction on the web (1), are detected at a first position in the web travel direction. A web end detection signal (G1) showing the detected web end (1E) and a picture end detection signal (G2) showing the detected picture end (1A1) are captured, and a control signal for aligning the picture end (1A1) with a preset picture end reference position (P1) is generated. The web is moved in the width direction by the control signal.

Description

Reel snake control device and control method

The present invention relates to a meandering meandering control device and a control method for controlling a spool having a pattern printed thereon with a pattern reference.

A conventional web winding control device applied to a web processing apparatus is shown in Figs. 5(a) and (b). The web 1 is wound around the winding reel 2, and the deflecting roller 3A and the guide roller 3B are guided to travel in the direction of the arrow X, and predetermined processing is performed in the processing device 4. Among them, the reel traveling mechanism that drives the reel 1 is not shown.

An example of the plane of the web 1 is shown in FIG. The roll 1 is printed with a plurality of rows (for example, in the example of FIG. 6, the Y direction orthogonal to the arrow X direction, that is, the width direction is 5 rows), the same pattern 1A. Here, the adjacent rows are spaced apart from each other, and the pattern 1A of each column is repeatedly printed at a certain pitch along the traveling direction indicated by the arrow X of the web 1.

There are various types of processing apparatuses 4, and an example thereof is a vertical cutting device that cuts the web 1 into plural numbers in the direction of the arrow X. Reel that reaches the processing device 4 In the first embodiment, for example, the interval of the pattern 1A of each column is cut for each column to form a plurality of cut pieces 1B.

In the processing apparatus 4, the widths of the cut pieces 1B in the direction of the arrow Y are equal to each other, and the roll 1 is cut so that the pattern 1A is located at the center in the width direction of each of the cut pieces 1B. The left and right blank portions 1C, 1D in the web 1 are removed by cutting by the processing device 4. In another example of the processing apparatus 4, a punching apparatus that punches and separates each of the patterns 1A by the roll 1 is exemplified. Of course, the processing device 4 is of various types, and is not limited to these two examples.

However, when the processing device 4 is a vertical cutting device, if the traveling position of the web 1 is deviated in the direction of the arrow Y, that is, in the width direction, the pattern 1A is displaced from the center or pattern of the cut piece 1B. 1A was cut off. Further, when the processing apparatus 4 is the above-described punching apparatus, if the deviation occurs in the width direction with respect to the traveling position of the web 1, the pattern 1A cannot be accurately punched along the outer circumference thereof. A problem arises in that the pattern 1A is cut.

Therefore, the traveling position in the wide direction of the web 1 is controlled by the web meandering control device. As shown in FIG. 5, the reel control device includes a reel end sensor 5 that detects a traveling position of the web 1 in a wide direction, and moves the reel 2 in an arrow Y direction. The actuator 6; and the actuator control unit 7 that controls the actuator 6 in accordance with the detection result obtained by the web end sensor 5.

The end of the roller sensor 5 is the arrow Y of the web 1 The position of the end portion (hereinafter referred to as "roller end portion") 1E in the direction, for example, an optically-detected sensor, is disposed in the vicinity of the winding reel 2, that is, the deflection roller 3A and the guide roller 3B. between.

The end portion of the reel object as the reference position of the end portion of the reel 1E is set in advance by the actuator control unit 7, and the end detecting signal of the reel detected by the reel end sensor 5 is detected. The control signal is transmitted to the actuator 6 in a manner that the difference from the end position of the web end is within a predetermined threshold.

The actuator 6 operates in accordance with the control signal received by the actuator control unit 7, whereby the rewinding reel 2 is moved in the arrow + Y direction or the -Y direction to the end of the reel 1E and the reel The position of the spool 1 in the direction of the arrow Y is corrected in such a manner that the end positions of the barrels coincide with each other.

As described above, the conventional reeling meandering control device maintains the position of the spool 1 in the arrow Y direction by monitoring the end portion 1E of the reel, so that it does not occur by the processing device 4. The above problems during processing.

However, the problem of the following is caused by merely performing the control system in which the end portion 1E of the web is kept constant. That is, as shown in FIG. 7, at the different positions in the arrow X direction of the web 1, the end portion of the arrow end portion 1E to the arrow 1 direction of the pattern 1A (hereinafter referred to as "the pattern end" When the distance L0 of the portion 1A1 is different and is printed, as described above, only the end portion 1E of the web is controlled so as to coincide with the end position of the end of the reel, and for example, the processing device 4 is as shown in FIG. When the longitudinal cutting device is described, the pattern 1A may be shifted from the center of the cut piece 1B, or the pattern 1A The product is cut off and the product becomes a problem. Similarly, even when the processing apparatus 4 is the above-described punching apparatus, the pattern 1A cannot be accurately punched along the outer circumference thereof, and as a result of the pattern 1A being cut, a problem of product failure occurs.

Therefore, as shown in Fig. 8, it has been proposed to print the line 1F near the end portion which does not affect the pattern 1A while the roll 1 is printing the pattern 1A, and when the roll 1 is sent to When the device 4 is processed, the line 1F is detected by replacing the line sensor 8 disposed on the end portion of the reel end sensor 5, and the line 1F is aligned with a preset line reference position. The actuator control unit 7 and the actuator 6 control the deviation of the spool 1 in the direction of the arrow Y, thereby correcting the deviation of the pattern 1A.

However, in this method, when the pattern 1A is printed on the roll 1 , the line 1F must be printed, so that the printing ink is excessively consumed.

In order to solve the problem as described above, it has been proposed to control the reeling meandering control device for controlling the traveling of the web 1 in such a manner that the pattern end portion 1A1 of the web 1 coincides with the preset end position of the pattern ( Patent Document 1).

The reel meandering control device is in the reel meandering control device illustrated in Fig. 5, on the downstream side of the reel end sensor 5, in the vicinity of the guide roller 3B directly in front of the processing device 4. As shown in FIG. 9, the pattern detecting camera 9 that images the pattern 1A is additionally disposed. The control at this time is as follows.

The pattern 1A imaged by the camera 9 is detected in the pattern In the image, the amount of deviation of the end portion 1A1 of the pattern from the reference position of the end portion of the pattern is detected, and this is used as a correction signal. Next, the actuator control unit 7 controls the actuator in such a manner that the deviation of the end portion 1E of the web detected by the end portion sensor 5 from the end position of the reel is zero. At 6 o'clock, the end position of the end of the reel is corrected by the above correction signal.

For example, when the deviation of the pattern end portion 1A1 from the pattern reference position is a deviation in the +Y direction, the end position of the web object is corrected to the -Y direction by the correction signal. Further, when the deviation of the pattern end portion 1A1 from the pattern reference position is a deviation in the -Y direction, the end position of the web object is corrected to the +Y direction by the correction signal. The control for correcting the reference position of the end portion of the web is performed as described above, whereby the running of the web 1 is controlled so that the pattern end portion 1A1 becomes the pattern reference position.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2009-122973

However, in the reel meandering control device illustrated in Fig. 9, the reel end sensor 5 is disposed in the vicinity of the rewinding reel 2, directly in front of the processing device 4 on the downstream side away from the reel Since the pattern detecting camera 9 is disposed, the response delay due to the feedback control of the pattern end detecting signal by the image captured by the image camera 9 is detected by the end sensor of the reel 5 detected end of the reel The response delay caused by the feedback signal is larger, the swing is easy to occur, and there is a problem of unstable control.

Therefore, it is considered that the gain of the pattern end detection signal is smaller than the gain of the end detection signal of the reel, the filter is applied to the end detection signal of the pattern, etc., but if it is as described above, it becomes impossible to effectively use the pattern detection camera 9 The detected end detection signal of the pattern.

An object of the present invention is to provide a reel meandering control device and a method thereof for controlling the wide-direction control of a traveling position of a web in a controlled manner on the basis of a pattern.

In order to solve the above problems, the reel snag control device according to the invention of claim 1 is characterized in that: the reel end detecting means is provided in a width direction orthogonal to the traveling direction of the reel The end portion, that is, the end portion of the web, is detected at a first position in the traveling direction of the web, and the pattern end detecting means is repeatedly printed on the web in the traveling direction. The end portion in the wide direction, that is, the end portion of the pattern, is detected at the first position; and the control signal generating means takes in the end detection of the reel detected by the end detecting means of the reel object And a signal for detecting the end detection signal detected by the end detecting means of the pattern, and generating a control signal for aligning the end of the pattern with a preset reference position of the end of the pattern; and an actuator The web is moved in the wide direction by the control signal outputted by the control signal generating means.

According to a second aspect of the invention, in the reel control device of claim 1, the reel end detecting means and the pattern end detecting means are configured by one imaging means, and the image detecting means is in the field of view of the imaging means The end of the web and the end of the pattern are detected.

The invention of claim 3, wherein the imaging means is a two-dimensional imaging means disposed at the first position or along the width direction of the roll. The one-dimensional imaging means disposed in the first position.

The invention of claim 4, wherein the control signal generating means selects a comparison result of the end detecting signal of the pattern and the reference position of the end of the pattern, in the reeling meandering control device of claim 1, 2 or 3. The web end reference position generates the control signal according to a comparison result between the selected end position of the web end and the end detecting signal of the web.

The method of controlling the meandering of the reel of claim 5 is characterized in that the end portion in the width direction orthogonal to the traveling direction of the web, that is, the end portion of the web, and the traveling direction are repeated The end portion in the wide direction, that is, the end portion of the pattern printed on the pattern of the roll, is detected at a first position in the traveling direction of the roll; and the taken-in indicates the detected roll An end detection signal of the end of the reel and a pattern end detection signal indicating the detected end of the pattern, and a control signal for aligning the end of the pattern with a preset reference position of the end of the pattern is generated. By the control signal, the reel is moved toward the aforementioned wide direction.

According to a sixth aspect of the invention, in the reel control method of claim 5, the end portion of the reel and the end portion of the pattern are detected by one imaging means.

According to a seventh aspect of the invention, in the reel control method of claim 5 or 6, the end position of the reel is selected according to a comparison result of the end detection signal of the pattern and the reference position of the end of the pattern. The control signal is generated according to a comparison result between the selected end position of the web end and the end detecting signal of the reel.

According to the present invention, since the end portion of the reel and the end portion of the pattern are detected at the first position in the traveling direction of the web, the end detecting signal of the reel and the end detecting signal of the pattern can be processed with the same gain, thereby preventing the delay The occurrence of the wobble or the like caused by the difference is good in controllability.

1‧‧‧Reel

1A‧‧‧ pattern

1A1‧‧‧ End of pattern

1B‧‧‧ cut pieces

1C, 1D‧‧‧ blank part

1E‧‧‧Roll end

1F‧‧‧ line

2‧‧‧Revolving scrolls

3A‧‧‧ deflection roller

3B‧‧·guide roller

4‧‧‧Processing device

5‧‧‧Roll end sensor

6‧‧‧Actuator

7‧‧‧Actuator Control Unit

8‧‧‧ line sensor

9‧‧‧ pattern detection camera

10‧‧‧ camera

10A‧‧ Vision

11‧‧‧Portrait Processing Department

12‧‧‧Actuator Control Department

12a‧‧‧1st Comparative Department

12b‧‧‧Roll end reference position storage

12c‧‧‧2nd Comparison Department

12d‧‧‧End end reference position storage

G1‧‧‧Roll end detection signal

G2‧‧‧ pattern end detection signal

Fig. 1 (a) is a plan view of a reeling meandering control device according to an embodiment of the present invention, and (b) is a side view.

Fig. 2 is an explanatory view showing a part of a web which is imaged by the image pickup apparatus of the web snake control device of the embodiment.

Fig. 3 is an explanatory view of an actuator control unit of the reel meandering control device of the embodiment.

Figure 4 is a pictorial base of the reel control device of the reel according to the embodiment An explanatory diagram of the control that is in place.

Fig. 5 (a) is a plan view of a conventional web snake control device, and (b) is a side view.

Fig. 6 is an explanatory view showing a rolled product in which a pattern is printed by a conventional web snake control device.

Fig. 7 is an explanatory view showing a deviation in the width direction in a pattern printed in the traveling direction of the web.

Fig. 8 is an explanatory view showing an example of a printed line in the traveling direction of the web, together with the pattern.

Fig. 9 is an explanatory view showing a conventional reeling meandering control device for controlling the running of the reel by reference to the end portion of the reel and the end portion of the pattern.

Next, a reeling meandering control device according to one embodiment of the present invention will be described. The same reference numerals are given to the same as those described in FIGS. 5 to 9 , and the repeated description is omitted. In the present embodiment, as shown in Fig. 1, the reel end sensor 5 originally disposed between the deflection roller 3A and the guide roller 3B is removed, and the CCD camera is fixedly disposed above the deflection roller 3A. The imaging device 10 is formed. Here, the light source that irradiates the area where the imaging device 10 is imaged is omitted.

As shown in FIG. 2, the end portion 1E of the reel and the end portion 1A1 of the reel are captured by one field of view 10A, and the image pickup image is imaged by the image processing unit 11 and borrowed. This generates a web end detection signal indicating the position of the end portion 1E of the web G1 and a pattern end detection signal G2 indicating the position of the pattern end 1A1.

As described above, in the present embodiment, the web end portion 1E and the pattern end portion 1A1 are detected at the same position in the traveling direction indicated by the arrow X in the web 1, and the detection signals G1, G2 are sent to Actuator control unit 12.

Here, as shown in FIG. 2, the end portion 1E of the reel is viewed from the end in the traveling direction of the reel 1 indicated by the arrow X as the end on the right side. Further, the pattern end portion 1A1 is viewed from the end in the traveling direction of the pattern 1A closest to the end portion 1E of the web 1 as the right end portion.

The actuator control unit 12 is configured as shown in FIG. 12a is a first comparison unit, and 12b is a reel end reference position storage unit that stores data of a reference position of the end portion of the reel, 12c is a second comparison unit, and 12d is stored with one or more pattern end portions. The pattern end reference position storage unit of the data of the reference position.

In the actuator control unit 12, the pattern end detection signal G2 created in the image processing unit 11 and the processing of the web 1 in the processing apparatus 4 by the pattern end reference position storage unit 12d are processed. The pattern end reference position at which the position is read is compared with the second comparison unit 12c, and a selection signal is created based on the obtained difference. By the selection signal, the end position of the reel object is read in the reel end reference position storage portion 12b. Next, the reel end detection signal G1 made by the image processing unit 11 and the reel end reference position read by the reel end reference position storage unit 12b are in the first comparison unit 12a. Ratio In contrast, a control signal according to the obtained difference is generated and output to the actuator 6.

The control operation will be described with reference to Fig. 4 . As shown in Fig. 4 (a), when the pattern end portion 1A1 is shifted by L1 from the pattern end portion reference position P1 read by the pattern end portion reference position storage portion 12d in the +Y direction, the second comparison portion 12c generates The selection signal of the magnitude of the deviation L1 and the direction of the deviation. As a result, the end portion reference position of the reel object read by the reel end reference position storage portion 12b becomes the reel end reference position Q1 shifted by L1 in the -Y direction. The actuator control unit 12 generates a control signal in accordance with the comparison result of the web end detection signal G1 and the web end reference position Q1, and transmits it to the actuator 6. In the actuator 6, the winding reel 2 is moved in the arrow-Y direction so that the end portion 1E of the reel is moved in the arrow-Y direction.

The control of the end portion 1E of the reel is such that the current pattern 1A is not in the field of view 10A of the imaging device 10, the selection signal remains as it is, and continues until the next pattern 1A is imaged by the imaging device 10, and the following pattern 1A is The pattern end 1A1 is detected. Next, when the pattern end portion 1A1 of the next pattern 1A is detected, the second comparing portion 12c updates the selection signal, and the same control is performed by the updated selection signal.

As a result of the control as described above, as shown on the right side of FIG. 4(a), the end portion 1A1 of the pattern 1A coincides with the pattern reference position P1.

When the pattern end portion 1A1 is shifted from the pattern end reference position P1 read by the pattern end portion position storage portion 12d by L2 in the -Y direction, as shown in FIG. 4(b), the above-described FIG. 4(a) Opposite control At the ground, the control for moving the winding reel 2 in the arrow + Y direction is performed. As shown on the right side of FIG. 4(b), the end portion 1A1 of the pattern 1A coincides with the pattern reference position P1.

By the control shown above, by the actuator 6, the control of moving the rewinding reel 2 in the arrow-Y direction or the +Y direction is repeatedly performed, thereby making the pattern end even at each position of the arrow X direction. The interval L0 between the 1A1 and the end portion 1E of the reel is different as described with reference to Fig. 7, and the pattern end portion 1A1 fed to the processing device 4 coincides with the pattern end portion reference position P1. The pattern end reference position P1 is previously selected in accordance with the processing position of the processing apparatus 4, whereby the meandering control of the web 1 is controlled at the pattern end reference position P1, and can be correctly processed in the processing apparatus 4.

In the present embodiment, the pattern end portion 1A1 and the web end portion 1E are detected at the same traveling position (the position of the deflection roller 3A) of the web 1 in the direction of the arrow X, so that the resulting pattern end portion can be obtained. The detection signal G2 is taken in simultaneously with the reel end detection signal G1 to the actuator control unit 12. Therefore, the two signals G1 and G2 can be processed with the same gain, and it is not necessary to perform processing such as adjusting the gain of the pattern end detection signal G2 or applying a filter, and the end detection signal G2 of the pattern can be effectively utilized, and the controllability is good.

In the present embodiment, a two-dimensional imaging device 10 such as a CCD camera is used, but a one-dimensional imaging device such as a line sensor can also be used. At this time, if the one-dimensional imaging device is disposed in the wide direction of the web 1, the end portion 1E of the reel and the end portion 1A1 of the pattern can be simultaneously detected.

Further, in the present embodiment, the roll end portion 1E and the pattern end portion 1A1 are detected at the same position in the traveling method of the roll 1 by one image pickup device 10, but the test roll may be individually configured. The web end detecting means of the object end portion 1E and the pattern end detecting means for detecting the pattern end portion 1A1 are disposed at the same position in the traveling direction of the web.

Further, in the present embodiment, the image processing unit 11 generates the roll end detection signal G1 and the pattern end detection signal G2, and takes the signals G1 and G2 into the actuator control unit 12 to perform calculation and generation. The control signal of the actuator 6 is controlled, but is not limited thereto. For example, the image processing unit 11 may detect the roll end detection signal G1 and the pattern end detection signal G2, and operate the signals G1 and G2 by the same operation as explained in FIG. A control signal is generated, and the control signal is sent to the actuator control unit 12, and the actuator control unit 12 controls the actuator 6. At this time, the control signal generated by the image processing device 11 is amplified by the actuator control unit 12. As described above, the control signal for controlling the actuator 6 can be generated by any of the image processing unit 11 and the actuator control unit 12, and the image processing unit 11 and the actuator control unit 12 can be summarized. It is called the control signal generation means.

Further, in the present embodiment, the case where the meandering control is performed with reference to the pattern printed on the roll 1 at a predetermined pitch in the traveling direction indicated by the arrow X is described, but the meandering control unit of the present embodiment is used. The pattern used is not limited to the simple pattern that is subsequently cut by cutting. For example, a cut mark indicating a cutting position of a simple pattern, a centering mark for a meandering control at the time of printing, or a registration mark is a walking side. It is printed repeatedly at a certain pitch and finally removed. However, in the meandering control, these can also be processed in the same manner as the above-described pattern, and therefore these are also included in the pattern.

1‧‧‧Reel

1A‧‧‧ pattern

1A1‧‧‧ End of pattern

1E‧‧‧Roll end

3A‧‧‧ deflection roller

10A‧‧ Vision

Claims (7)

A reeling meandering control device is characterized in that: a reel end detecting means is provided, which is an end portion of a wide direction orthogonal to a traveling direction of the reel, that is, an end portion of the reel Detecting at a first position in the traveling direction of the web; and pattern end detecting means for repeatedly printing the end portion of the pattern of the web in the traveling direction along the traveling direction That is, the end portion of the pattern is detected at the first position; and the control signal generating means takes in the end detecting signal of the reel detected by the end detecting means of the reel and detects the end portion of the pattern. a pattern detection signal detected by the means, generating a control signal for aligning the end of the pattern with a preset reference position of the end of the pattern; and an actuator outputted by the control signal generating means The aforementioned control signal causes the web to move toward the aforementioned wide direction. The reel control device for a reel according to claim 1, wherein the reel end detecting means and the pattern end detecting means are constituted by one imaging means, and the reel is detected in a field of view of the imaging means. The end of the object and the end of the pattern. The reeling apparatus of the second aspect of the invention, wherein the imaging means is disposed in the second-dimensional imaging means at the first position or in the width direction of the reel The first-order imaging means of the first position. For example, in the reeling device of claim 1, wherein the control signal generating means selects the comparison result of the end detecting signal of the pattern and the reference position of the end of the pattern. The web end reference position generates the control signal according to a comparison result between the selected end position of the web end and the end detecting signal of the web. A method for controlling the meandering of a web, which is an end portion of a wide direction orthogonal to a traveling direction of the web, that is, an end portion of the web, and is repeatedly printed on the web in the traveling direction The end portion of the pattern in the wide direction, that is, the end portion of the pattern, is detected at a first position in the traveling direction of the web; and the reel indicating the end portion of the reel detected is taken in. An end detection signal, and a pattern end detection signal indicating the detected end of the pattern, generating a control signal for aligning the end of the pattern with a preset reference position of the pattern end; by the control signal And moving the aforementioned web to the aforementioned wide direction. The method of controlling a reel of a reel according to claim 5, wherein the end portion of the reel and the end portion of the pattern are detected by one imaging means. The method of controlling the meandering of the reel of item 5 or 6, wherein the end position of the reel is selected according to a comparison result of the end detection signal of the pattern and the reference position of the end of the pattern, according to the The control signal is generated by comparing the selected end position of the web end with the detection signal of the end of the web.