JP2003146503A - Tension control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tension control device capable of accurately performing tension control of a web fed from festoon web. SOLUTION: This tension control device 1 adjusts tension applied to the web 4a when feeding the web from the festoon web 4 and is provided with a feed roller 13, an omega roller 11 arranged between the festoon web and the feed roller, a dancer roll 12 supported on the web, a position detection sensor 15 detecting upper and lower positions of the dancer roll, and a controller 14 controlling the number of revolution of the omega roller to bring a position of the dancer roll to a predetermined position based on the results of detection by the position detection sensor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension control device that adjusts the tension applied to a web when the web is fed from a Fastune original fabric.

[0002]

2. Description of the Related Art In the field of processed paper products, a so-called web, which is a band-shaped raw material, is usually stored and transported as a roll raw material wound into a roll. Then, for example, by mounting and unwinding this roll material on the roll shaft part of the web processing machine, the web is sent to the processing step part in the web processing machine for processing, but complicated and highly accurate processing is required. If so, tension control during web feeding is generally important in web processing machines.

By the way, in recent years, as a method of storing raw materials that are unsuitable for being used as a raw material for rolls, for example, due to the fact that the web is thick and bulky, such as air raid, there is known a fastune raw material method. Has been.

As shown in FIG. 4, the Fastune original fabric method is a method in which web raw materials cut into a predetermined width are folded and stored in layers. Fastune Original 4
After stacking the webs 4a in one row up to a certain height, stack the webs 4a in the next adjacent row in the same manner to form a plurality of rows having the same height until the predetermined number of rows is reached. It is formed by repeating. Pull out one end of the web 4a from such a Fastune original fabric 4,
The web 4a is fed to the processing section of the web processing machine by sequentially unraveling from the first row to the last row.

By adopting the Fastune original fabric method, the amount of web per unit volume can be increased as compared with the conventional roll original fabric, but it is unraveled from the Fastune original fabric. At that point, the tension applied to the web remains zero. Therefore, due to the necessity of processing, it is necessary to apply tension to the web to give tension at the stage of feeding it from the fastened original fabric into the web processing machine.

[0006]

However, when tension control is required for the web, it is not possible to equip the fastened raw fabric having no roll shaft portion with the feeding drive function for feeding the fastened raw fabric itself. For this reason, a tension control device effective for setting the tension of the web of the fastened original fabric to a desired value has not been established so far.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a tension control device capable of accurately controlling the tension of a web sent from a Fastune original fabric.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 is configured such that, for example, as shown in FIG. 1, the web 4a is formed by folding a web 4a into layers to form the web. A tension control device 1 that adjusts the tension applied to the web when feeding the web, including a feed roller (for example, the feed roller 13) that feeds the web, the fastune original fabric, and the feed roller. Detects a drive roller (for example, an omega roller 11) arranged in between, a dancer roll 12 that is sent from the drive roller and is supported on the web that hangs down in a U shape, and the vertical position of the dancer roll. Position detection sensor 15
A control unit (for example, a controller 14) that controls the rotation speed of the drive roller so that the position of the dancer roll is set to a predetermined position based on the detection result of the position detection sensor.

According to the first aspect of the present invention, the drive roller feeds the web from the fastened original fabric, the fed web is further fed by the feed roller, and the web is placed between the drive roller and the feed roller. The dancer roll supported on the web applies tension to the web according to the weight of the dancer roll, and the dancer roll moves up and down according to the rotation speed of the drive roll. Then, the position detection sensor detects the vertical position of the dancer roll, and the control means
The rotation number of the drive roller is controlled based on the detection result, and the position of the dancer roll is set to a predetermined position. Therefore, the tension control of the web between the drive roller and the feed roller and the adjustment of the web feed amount can be accurately performed from the time of feeding the web. here,
The feed roller is a nip roller, an S-wrap roller, an omega roller, or the like.

According to a second aspect of the present invention, for example, as shown in FIG. 2, when the web 4a is fed from the fastened original fabric 4 in which the web 4a is folded in layers, the tension applied to the web is adjusted. In the tension control device 2, the feed roller (for example, the feed roller 23) that feeds the web, and the drive roller (for example, the S wrap roller 21) arranged between the original material of the fast tune and the feed roller. )When,
A tension detector 22 that detects the tension value of the web fed from the drive roller, and an adjusting unit that adjusts the rotation speed of the drive roller so that the tension value detected by the tension detector is a predetermined value (for example, , A controller 24), and a controller 24).

According to the second aspect of the present invention, the drive roller feeds the web from the fastened original fabric, the fed web is further fed by the feed roller, and the tension detector detects the drive roller and the feed roller. The tension value of the web between the rollers is detected. Then, the rotation speed of the drive roller is adjusted by the adjusting means, and the tension value detected by the tension detector is set to a predetermined value. Therefore, a predetermined tension is applied to the web from the time when the web is delivered, and the tension control can be accurately performed.

According to a third aspect of the present invention, for example, as shown in FIG. 3, in the tension control device according to the first or second aspect, a plurality of rollers (for example, between the fastune original fabric and the drive roller) are provided. , A free roller 3a), and the roller is arranged so as to add a predetermined wrapping angle to the web fed from the Fastune original fabric and feed the web to the drive roller.

According to the invention described in claim 3, claim 1,
It is needless to say that the same effect as that of the tension control device described in 2 is obtained, and in particular, the web fed from the original fabric of Fastune by the roller is fed to the drive roller with a predetermined included angle. Therefore, some tension is applied to the web due to the rotation resistance of the roller exerted on the web, so that looseness and meandering can be suppressed and the operation can be stabilized. Here, although a free roller or a feed roller is used as the roller, it is possible to mix the free roller and the feed roller.

According to a fourth aspect of the present invention, for example, as shown in FIGS. 1 to 3, in the tension control device according to any of the first to third aspects, the drive roller is an omega roller 11 or S. It is a lap roller 21.

According to the invention of claim 4, claim 1
It is needless to say that the same effect as that of the tension control device according to any one of 3) can be obtained. Especially, since the drive roller is an omega roller or an S lap roller, a proper wrap angle is added to the web. And
The web never slips. Also, Omega Roller,
Alternatively, with the S-wrap roller, the web is not sandwiched between the rollers from above and below, so there is no risk of compressing the web in the vertical direction.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 3 respectively,
It is a figure which shows one Embodiment of the tension control apparatus which concerns on this invention.

(First Embodiment) The structure of the tension control device 1 shown in FIG. 1 will be described.

The tension control device 1 feeds the web 4a from the fast tune original fabric 4, and also adjusts the position of the dancer roll 12, which will be described later, and the Omega roller 11 which feeds the web 4a and hangs down in a U-shape. The dancer roll 12 having a predetermined weight supported on the web 4a to be formed, the feed roller 13 that sends the web 4a delivered from the dancer roll 12 to a processing unit of a web processing machine (not shown), and the position information of the dancer roll 12 A controller 14 that adjusts the feed amount (rotation speed) of the web 4a by the omega roller 11, a position detection sensor 15 that detects position information of the dancer roll 12, and the like are provided.

The omega roller 11 is a drive roller 11
a and a holding angle at which the web 4a does not slip on both sides of the drive roller 1a.
Free rollers 11b and 11b arranged in addition to 1a
It is a drive unit consisting of.

The omega roller 11 is the drive roller 11
The web 4a is free roller 11b so as to wrap a.
Since the web 4a is wound around and fed out, there is no fear that the web 4a is sandwiched between the rollers and compressed. still,
When slippage of the web 4a by the drive roller 11a cannot be prevented due to the included angle added to the web 4a, the drive roller 11a is provided with a free roller and the web 4a is not compressed by the free roller.
You may nip a.

The drive roller 11a is connected to a motor (not shown) at the roll shaft portion, and the rotation speed of the motor is controlled by the controller 14 according to the line production speed.
Fine-tuned by. On the other hand, the feed roller 13 is connected to a motor (not shown) at the roll shaft portion,
The rotation speed of the motor can be set in proportion to the line production speed or can be set arbitrarily.

The dancer roll 12 is an omega roller 11
The web 4a between the feed rollers 13 is given a certain tension by a predetermined weight and moves up and down from a predetermined origin position according to the rotation speed of the drive roller 11a of the omega roller 11 at that time. .
The position information of the dancer roll 12 at this time is detected by the position detection sensor 15 and output to the controller 14. Then, when the position of the dancer roll 12 deviates from the origin, the controller 14 adjusts the rotation speed of the motor of the drive roller 11a, performs feedback to return the position of the dancer roll 12 to the origin, and performs the feedback.
The length of the web 4a between 1 and the feed roll 13 is controlled.

According to the tension control device 1 as described above, first, the web 4a is sent out from the fasttune original fabric 4 by the rotational driving of the omega roller 11, and the web 4a is fed according to the rotational speed of the drive roll 11a at this time.
The dancer roll 12 moves from the origin position.

Then, the position information of the dancer roll 12 is detected by the position detection sensor 15, and the controller 1
4 is output. Then, the controller 14 adjusts the number of revolutions of the omega roller 11 so as to return the dancer roll 12 to the origin position based on this position information. Therefore, the amount of the web 4a delivered by the omega roller 11 is appropriately increased or decreased, The dancer roll 12 returns to the original position again. In this way, the web 4a is given a predetermined tension by the weight of the dancer roll, and then the feed roller 13 sends the web 4a to the processing section of the web processing machine.

As described above, according to the tension control device 1 of the first embodiment, the omega roller 11
Since the tension control is performed by the above, the tension control of the fastened raw fabric 4 and the web feed amount control can be accurately performed. Further, since the Omega roller 11 can add a proper wrapping angle to the web 4a, the web 4a does not slip, and the tension control can be accurately performed from the time of feeding the web 4a. The omega roller 11 is optimal for tension control when processing a flexible raw material such as air rade, because there is no risk of compressing the web 4a in the vertical direction.

(Second Embodiment) The structure of the tension control device 2 shown in FIG. 2 will be described.

The tension control device 2 includes, for example, an S wrap roller 21 for feeding the web 4a from the fast tune original fabric 4, a tension detector 22 for detecting the tension value of the web 4a fed by the S wrap roller 21, and a tension detector. Based on the feed roller 23 that sends the web 4a sent from the detector 22 to the processing section of a web processing machine (not shown) and the tension value detected by the tension detector 22, the feed amount (rotation of the web 4a by the S lap roller 21 The controller 24 for adjusting the number) is provided.

The S wrap roller 21 is a drive unit composed of drive rollers 21a, 21a arranged vertically, and the web 4a is placed on the drive rollers 21a, 21a.
Since the web 4a is wound and sent out in a letter shape, there is no fear that the web 4a is sandwiched between the rollers and compressed. still,
Depending on the holding angle of the web 4a, the drive roller 21a,
If the slip of the web 4a at 21a cannot be prevented,
A free roller may be provided for each of the drive rollers 21a and 21a, and the web 4a may be nipped by the free roller to the extent that the web 4a is not compressed.

The drive rollers 21a are each connected to a motor (not shown) by a roll shaft portion, and the rotation speed of the motor is finely adjusted by the controller 24 according to the line production speed. On the other hand, the feed roller 23
Is connected to a motor (not shown) at the roll shaft portion, and the rotation speed of the motor can be set in proportion to the line production speed or can be set arbitrarily.

The tension detector 22 detects the tension applied to the web 4a between the S-wrap roller 21 and the feed roller 23, and is provided with, for example, a roller and a strain gauge (each not shown). And
For example, when tension is applied, the amount of sinking of the roller of the tension detector 22 is measured by a strain gauge, the measured amount of sinking is converted into a tension value, and the tension is detected.

The tension value detected by the tension detector 22 is output to the controller 24. The controller 24 to which the tension value is input performs feedback by adjusting the rotation speed of the motor of the drive roller 21a, and controls the tension between the S lap roller 21 and the feed roller 23.

According to the tension control device 2 as described above, first, the web 4a is sent out from the fast tune original fabric 4 by the rotational driving of the S lap roller 21, and the tension of the web 4a at this time is detected by the tension detector 22. Detected by.

Then, the tension value detected by the tension detector 22 is output to the controller 24, and the controller 24 adjusts the rotation speed of the S-wrap roller 21 so that the tension value becomes a preset tension value. . As a result, the feed amount of the web 4a by the S-wrap roller 21 is appropriately increased or decreased, and the web 4a has a predetermined tension. In this way, the web 4a is given a predetermined tension, and then the feed roller 23 feeds the web 4a to the processing section of the web processing machine.

As described above, according to the tension control device 2 of the second embodiment, the S wrap roller 2
Since the tension control is performed by 1, the tension control of the Fastune original fabric 4 can be accurately performed. Further, since the S wrap roller 21 can add a proper wrap angle to the web 4a, the web 4a does not slip and the web 4a does not slip.
Accurate tension control can be performed from the time of sending a. The S-wrap roller 21 is used for the web 4
Since there is no risk of compressing a in the vertical direction, it is optimal for tension control when processing a flexible raw material such as air rade.

(Third Embodiment) The structure of the tension control device 3 shown in FIG. 3 will be described.

The tension control device 3 is different from the tension control device 1 of the first embodiment in that a plurality of free rollers 3a are provided between the fastune original fabric 4 and the omega roller 11, and the free roller 3a is the fastune original fabric. The web 4a delivered from the web 4 is arranged so as to be fed to the omega roller 11 with a predetermined included angle. Therefore, the tension control device 1
The same reference numerals will be given to the configurations that overlap with the above, and the description of the configurations will be omitted.

In this tension control device 3,
First, the web 4a is sent out from the fastened original fabric 4 by the rotational drive of the Omega roller 11. Web 4
As a is passed through between the free rollers 3a, a proper wrap angle is added, so that the web 4a is subjected to the rotational resistance of the free roller 3a, so that some tension is applied to the web 4a. Therefore, the meandering due to the looseness can be suppressed and the web 4a can be sent to the omega roller 11. Here, the roll arrangement of the omega rolls is also determined from the optimum web path for delivery.

As described above, according to the tension control device 3 of the third embodiment, it is needless to say that the same effect as that of the tension control device 1 of the first embodiment can be obtained. Is passed between the free rollers 3a, it is possible to suppress loosening and meandering of the web 4a between the fastened original fabric 4 and the omega roller 11, and to stabilize the operation.

It is needless to say that the present invention is not limited to the above-mentioned embodiment and various modifications can be made. For example, in the first embodiment, the web 4a is sent out from the fastened original fabric 4 by the omega roller 11 and the position of the dancer roll 12 is adjusted, but the omega roller 11 may be replaced by an S lap roller. . Alternatively, a free roller may be provided in the drive roller 11a of the omega roller 11 and the web 4a may be nipped by the free roller to the extent that the web 4a is not compressed.

In the second embodiment, the S-wrap roller 21 is used to feed the web 4a from the fastened original fabric 4, but the S-wrap roller 21 may be replaced with an omega roller. In addition, the drive rollers 21a and 21a of the S-wrap roller 21 are provided with free rollers, respectively.
The web 4a may be nipped by a free roller to the extent that the web 4a is not compressed.

Further, in the third embodiment, the web 4a is sent out from the fastened original fabric 4 by the omega roller 11 and the position of the dancer roll 12 is adjusted. However, the omega roller 11 is replaced with an S lap roller. May be.

Although a plurality of free rollers 3a are arranged between the fastened original fabric 4 and the omega roller 11, a feed roller may be provided instead of the free roller 3a, or the free roller 3a may be provided. In addition, a feed roller may be provided, and the web 4a of the fastened original fabric 4 may be fed by the feed roller. At this time,
There is no limit to the number of feed rollers arranged. By providing the feed roller, it is possible to more reliably and efficiently deliver the web 4a from the fasttune original fabric 4 to the omega roller 11, so that the tension control device 3 does not deliver the fasttune original fabric. It is possible to prevent the line from being stopped due to, and improve the productivity.

The arrangement of the free roller 3a is such that the web 4
Any arrangement may be used as long as it is accurately conveyed to the omega roller 11 while adding a proper wrapping angle to a.

[0044]

According to the first aspect of the invention, the drive roller feeds the web from the fastened original fabric, the fed web is further fed by the feed roller, and the web is fed between the drive roller and the feed roller. The dancer roll supported on the web applies tension to the web according to the weight of the dancer roll, and the dancer roll moves up and down according to the rotation speed of the drive roll. Then, the position detection sensor detects the vertical position of the dancer roll, and the control means controls the rotation speed of the drive roller based on the detection result, and sets the position of the dancer roll to a predetermined position. Therefore, the tension control of the web between the drive roller and the feed roller and the adjustment of the web feed amount can be accurately performed from the time of feeding the web.

According to the second aspect of the present invention, the drive roller feeds the web from the fastened original fabric, the fed web is further fed by the feed roller, and the tension detector detects the drive roller and the feed roller. The tension value of the web between the rollers is detected. Then, the rotation speed of the drive roller is adjusted by the adjusting means, and the tension value detected by the tension detector is set to a predetermined value. Therefore, a predetermined tension is applied to the web from the time when the web is delivered, and the tension control can be accurately performed.

According to the invention of claim 3, claim 1,
It is needless to say that the same effect as that of the tension control device described in 2 is obtained, and in particular, the web fed from the original fabric of Fastune by the roller is fed to the drive roller with a predetermined included angle. Therefore, some tension is applied to the web due to the rotation resistance of the roller exerted on the web, so that looseness and meandering can be suppressed and the operation can be stabilized.

According to the invention described in claim 4,
It is needless to say that the same effect as that of the tension control device according to any one of 3) can be obtained. Especially, since the drive roller is an omega roller or an S lap roller, a proper wrap angle is added to the web. And
The web never slips. Also, Omega Roller,
Alternatively, with the S-wrap roller, the web is not sandwiched between the rollers from above and below, so there is no risk of compressing the web in the vertical direction.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a tension control device 1 according to an embodiment of the present invention.

FIG. 2 is a diagram showing an outline of a tension control device 2 which is an embodiment of the present invention.

FIG. 3 is a diagram schematically showing a tension control device 3 which is an embodiment of the present invention.

FIG. 4 is a perspective view for explaining an original fabric of Fastune.

[Explanation of symbols]

1 Tension control device 11 Omega Roller (Drive Roller) 12 dancer roll 13 Feed roller (nip roller) 14 Controller (control means) 15 Position detection sensor 2 Tension control device 21 S Wrap roller (drive roller) 22 Tension detector 23 Feed roller (nip roller) 24 Controller (adjusting means) 3 Tension control device 3a Free roller (roller) 4 Fastune original fabric 4a web

Claims (4)

[Claims] 1. A tension control device that adjusts the tension applied to the web when the web is fed from a Fastune original fabric in which the web is folded into layers, and a feed roller that feeds the web, A drive roller disposed between the fast tune original fabric and the feed roller, a dancer roll that is fed from the drive roller and is hung down in a U shape, and is supported on the web; A position detection sensor for detecting a position; and a control unit for controlling the rotation speed of the drive roller so that the position of the dancer roll is set to a predetermined position based on the detection result of the position detection sensor. Tension control device. 2. A tension control device that adjusts the tension applied to the web when the web is fed from a Fastune original fabric in which the web is folded in layers, and a feed roller that feeds the web, A drive roller that is arranged between the fast tune original fabric and the feed roller, a tension detector that detects the tension value of the web sent from the drive roller, and a tension value that the tension detector detects are predetermined. Adjusting means for adjusting the number of rotations of the drive roller so that 3. A plurality of rollers are provided between the Fastune original fabric and the drive roller, wherein the rollers add a predetermined wrapping angle to the web fed from the Fastune original fabric to reach the drive roller. The tension control device according to claim 1 or 2, wherein the tension control device is arranged so as to be fed. 4. The drive roller is an omega roller or an S-wrap roller.
The tension control device according to any one of 3 to 3.