JPH0794297B2 - Unwinder equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an unwinder device for supplying a web (web) to a web winding device, a super calender or the like which is generally used in a paper mill.

[Conventional technology]

FIG. 2 is a perspective view of a conventional unwinder device, more specifically, its duplex winder. In the figure, 16 is an unwinder stand, 01 is a rewinding roll for feeding the paper after being carried into the unwinder stand, 20 is a paper roll serving as a guide for feeding the paper, and 32 is a width of the paper required. A slitter for cutting, 33 is a drum for winding the paper, and 34 is a wound paper roll (winding roll).

An example of paper splicing in the unwinder device will be described with reference to the same drawing. When a predetermined length of paper is fed out for one rewinding roll in the winder operation, the space between the take-up roll 34 and the rewinding roll 02 is determined. The paper 05 is left connected to the rewinding roll 02 (hereinafter, this rewinding roll is referred to as an old rewinding roll), and is moved to a position 18 away from a predetermined rewinding roll position 17 during winder operation. , Rewind roll to the new unwinder stand 16
01 (hereinafter, this rewinding roll is referred to as the new rewinding roll)
Take the old rewind roll 02 paper 05 and new rewind roll 01
The paper end 15 of the new rewinding roll 01 is bonded to the paper 35 of the new rewinding roll 01 with the adhesive 14, and then the paper 05 is fed toward the take-up roll 34. The paper 35 of 01 is made to reach the winding drum 33.

Therefore, in order to achieve this paper splicing operation, at least the paper 05 of the old rewinding roll 02 and the paper 35 of the new rewinding roll 01 are bonded, and the vicinity of the bonded position (position 36 in the figure). , Near 37, 37) (cutting the paper 05, 35 (it is preferable to cut at a position as close to the bonding point as possible so that the paper does not remain in a so-called tail shape after bonding)) There must be. Although these works have been devised in various ways at each paper mill site, they are generally done manually and the work frequency is high (dozens of times per day). Automation of work is desired.

As an example of automating the paper splicing work so far, JP-A-62-887
56 has been proposed, but the content is to cut the vicinity of the winding end of the new rewinding roll appropriately, form an adhesive surface, and after the paper of the old rewinding roll and the new rewinding roll is adhered, It is not limited to cutting the paper of the return roll with a knife, and no technique is disclosed regarding how to set the timing of protruding the knife. Therefore, the work that relies on manpower, which accounts for most of the current paper splicing work, remains unsolved.

[Problems to be Solved by the Invention]

The conventional unwinder device has the following problems to be solved. That is, since the paper splicing operation is manually performed, it is difficult to perform uniform and clean adhesion in the width direction of the paper (direction perpendicular to the longitudinal direction of the paper, that is, the direction in which the adhesive surfaces are continuous). Achieving a clean bond requires many years of operator proficiency. The essential condition that must be solved for mechanization is to detect the fact that the bonding of the paper is completed when cutting the paper near the paper splicing point (bonding position) in an instant. Up until now, there was no means other than visual inspection to detect it.

[Means for Solving the Problems] As a means for solving the above problems, the present invention provides an unwinder device that operates while performing a web splicing process from an old rewinding roll to a new rewinding roll when replacing the rewinding roll. A paper roll that supports the old web that is being fed from the rewind roll below so that it can be prevented from loosening, and a new web end that has an adhesive surface formed in advance in the width direction at a suitable position between the paper roll and the old rewind roll. A new rewinding roll rotatably mounted close to the old web, and pressing means for adhering the old web to the bonding surface of the new web by pressing the old web on the peripheral surface of the new rewinding roll. Of the two surfaces of the old web that are interposed and fed between the paper roll and the old rewinding roll, a tension roll that can abut its peripheral surface on the surface on the side where the new rewinding roll exists, and the same tension. A swing arm that pivots the roll to swing substantially perpendicularly to the feeding direction of the old web, an air cylinder that swings the swing arm with adjustable air pressure, and a rotation arm that resists the driving force of the air cylinder. It is an object of the present invention to provide an unwinder device characterized by comprising an adhesion detecting means for detecting that the old web and the new web are adhered by the rotation of the moving swing arm.

[Action]

Since the present invention is configured as described above, it has the following effects. That is, an adhesive surface is formed at a proper position between the old web that is unwound from the old rewinding roll (hereinafter sometimes simply referred to as “web”) and the paper roll that supports the old web underneath so as to prevent relaxation. A new rewinding roll having a new web (hereinafter sometimes simply referred to as “web”) end is rotatably mounted on the peripheral surface of the new rewinding roll, with its adhesive surface rotatably mounted close to the old web. Since the pressing means for pressing the old web to adhere it to the adhesive surface of the new web is provided, the new rewind roll is set to the above-mentioned rewinding roll in a state in which an appropriate tension is generated on the old web by the paper roll (preventing relaxation). When the old web is pressed against the peripheral surface of the new rewinding roll by the pressing means while rotating the new web end away from the paper roll, the adhesive surface of the new web end reaches the portion pressed by the pressing means and the old web is pressed. And Shin U It is adhered automatically to the drive.

On the other hand, between the paper roll and the old rewind roll, the tension roll is pivotally supported by the swing arm so that it can contact the surface of the old web on the side where the new rewind roll exists, and Almost perpendicular to the feeding direction,
Since the air cylinder that can adjust the pressure swings it, when the old web and the new web are bonded, the lower part of the old web is properly tensioned by the paper roll, and the new web is rewound. Since the rolls are pulled by the rotation of the rolls, a relatively large tension is applied to the bonded old and new webs, and the required swing (rotation) force is applied by the air cylinder via the swing arm to the new roll. The tension roll that is in contact with the old web is pushed back from the side where the return roll is present. That is, the swing arm rotates against the force of the air cylinder. If this rotation (amount or force, etc.) exceeds the required range, the adhesion detecting means determines that the adhesion is completed, and the next step, for example, the remaining side of the old web (old rewinding roll side) cutting step, etc. You can move.

The tension roll, swing arm, and air cylinder (hereinafter, these may be referred to as “tension adjusting device”) are used to displace the middle of the old web,
The old rewinding roll web is prevented from dripping on the bonding surface of the new rewinding roll and adhesion at an inappropriate position occurs, and at the moment when the webs of the old and new rewinding rolls are bonded, By applying an appropriate tension to the web, it is possible to prevent wrinkles from being formed in the bonded portion, or to prevent the web from being obliquely bonded.

Also, in the case of paper splicing while rotating the new rewind roll,
By adhering the webs of the old and new rewinding rolls, the web of the old rewinding roll is pulled in the rotational direction of the new rewinding roll, and the web tension of the old rewinding roll is changed. It is possible to recognize the fact that the web and the web are bonded by catching the fluctuation of the tension or the fluctuation that may occur with the fluctuation of the tension by the bonding detecting means, and therefore, it is possible to recognize the fact that the web is bonded to the web. By stopping the rotation of the return roll or giving a cutting command to the web of the old take-up roll, the web is not left in a tail shape at the bonding position for a long time, and the web is mechanically spliced without any human intervention. Can be completed.

〔Example〕

An embodiment of the present invention will be described with reference to FIG. The same parts as those in FIG. 2 of the conventional example are designated by the same reference numerals, and the description thereof will be omitted unless particularly necessary.

In the drawing, 01 is a new rewinding roll, 02 is an old rewinding roll, 03 is a new rewinding roll 01, an end face forming device for forming a paper end having an adhesive surface 14 for paper splicing, which will be described later, 04
Is a cutting device for pressing the adhesive surface 14 against the paper 05 of the old rewinding roll 02, and further cutting the paper 05 of the old rewinding roll 02 with the knife 06, and 07 is a tension for appropriately adjusting the tension of the paper 05. It is a roll. It should be noted that the tension roll 07 does not hinder the progress of the paper fed from the rewinding roll during the winder operation, for example, when the winding diameter of the rewinding roll becomes small, the paper of the old rewinding roll 02 is
It is in the position 09 where it does not touch 05.
It shall move to the 11th position via the position of. By moving in this way, the tension roll 07 can be held by the paper 05 of the old rewinding roll 02 as shown in the figure (the tension roll 07 is in contact with the paper 05 to provide tension). 12 detects the tension of the paper 05,
In addition, the tension adjusting device adjusts the tension to a desired value. The tension adjusting device 12 is an air cylinder described later.
23, swing arm 25, actuating piece 29, limit switch 30
Etc., and constitutes the main part of this embodiment.

Hereinafter, the operation of this embodiment will be described with the tension adjusting device 12 as a main component. First, the new rewinding roll 01 is carried into the position of 13, and here, the winding tail is cut in a straight line in the roll width direction by the manual operation or the end surface forming device 03, and the paper end 15 with the adhesive surface 14 is attached. Form.

On the other hand, the old rewinding roll 02 where the paper of a predetermined length is fed out is rewound at the rewinding position 17 on the unwinder stand 16 without cutting the paper 05 where it is connected to the winding section.
To 18 positions. At this time, by pressing the paper 05 by the presser 19 at the position of the paper roll 20 where the paper 05 first passes during the winder operation, the tension of the paper 05 from the paper roll 20 to the winding section will be described below. It is held constant during the splicing operation.

Next, the new rewinding roll 01 described above moves from the position 13 to the position 17 and starts to rotate in the direction of the arrow 21. At this time, the paper 05 of the old rewinding roll 02 at the position 18 is pressed by the paper presser 22 onto the new rewinding roll 01 with an appropriate force, and is pressed obliquely upward from below by the tension roll 07. And held in the shape as shown. Here, in order to swing the tension roll 07 from the position 10 to the position 11, the swing arm 25 rotating around the fulcrum 24 is pulled up by the air cylinder 23 and rotated. The tension roll 07 is pivotally supported at the tip of the swing arm 25 as shown in the figure. Therefore, the tension applied to the paper 05 can be adjusted by the air pressure applied to the air cylinder 23.

In this way, by holding the paper 05 away from the peripheral surface of the new rewinding roll 01 and applying an appropriate tension, the adhesive surface
It is possible to prevent the paper 05 from hanging down and reaching the adhesive surface 14 before the paper 14 reaches the position of the paper retainer 22. or,
By applying uniform tension to the paper 05, the paper presser 22
The uniformity in the width direction of the paper 05 is maintained at the moment when the adhesive surface 14 comes into contact with the paper 05 at the position, and the adhesive state becomes an ideal straight line and uniform in the paper width direction.

Next, since the new rewinding roll 01 continues to rotate in the direction of arrow 21 even after the paper 05 is bonded to the bonding surface 14 at the position of the paper presser 22, the paper 05 is also synchronized with the movement of the surface of the new rewinding roll 01 thereafter. Then arrow
As the paper 05 is pulled in both directions and the paper 05 is pulled in both directions, the tension of the paper 05 between the paper roll 20 and the paper retainer 22 becomes high. Due to this increase in tension, the force pulling the tension roll 07 in the direction of arrow 27 overcomes the force of the air cylinder 23 in the direction of arrow 28, and the tension roll 07 moves in the direction of arrow 27.
Rotates about the fulcrum 24, and as a result, the operating piece 29 pushes the limit switch 30 to operate it. When the limit switch 30 is activated, a new rewinding roll is produced by means not shown.
The rotation of 01 in the direction of the arrow 21 is stopped, and the paper cutting knife 06 installed near the paper retainer 22 projects to cut the paper 05 of the old rewinding roll 02 over the entire width. At this time, the paper cutting knife 06 should be installed near the paper retainer 22, and the rotation angle 31 of the swing arm 25 until the limit switch 30 operates and the limit of the limit switch 30 operation until the knife 06 is projected. By appropriately setting the delay time or the time until the rotation of the new rewinding roll 01 is stopped, after the paper 05 of the new rewinding roll 01 and the paper of the old rewinding roll 02 are completely adhered, Moreover, the splicing can be performed so that the tail-shaped portion of the paper 05 of the old rewinding roll 02 remaining at the splicing position after cutting becomes short.

As described above, according to the present embodiment, it is possible to mechanically and beautifully bond the paper from the old rewinding roll to the new rewinding roll in the unwinder device without requiring any human labor, thus improving the quality of the product. And work efficiency is achieved.

〔The invention's effect〕

Since the present invention is configured as described above, it has the following effects.

(1) Since the web is uniformly and beautifully adhered by the tension adjusting means, the conventional problems such as wrinkles and diagonal joints are eliminated.

(2) Since it is possible to accurately and mechanically know the bonded portion (connection portion) of the web and the completion of the bonding by the bonding detection means, it is possible to mechanize the cutting of the web end (tail) of the bonded portion, Ultimately, full automation of web splicing is achieved.

(3) With the above (1) and (2), it is possible to achieve high quality of products, improvement of production efficiency, improvement of working conditions of workers, and the like.

[Brief description of drawings]

FIG. 1 is a side view of an unwinder device according to an embodiment of the present invention, and FIG. 2 is a perspective view of a conventional example. 01 …… New rewinding roll, 02 …… Old rewinding roll 03 …… End face forming device, 04 …… Cutting device 05 …… Paper (web), 06 …… Knife 07 …… Tension roll, 12 …… Tension adjustment Device 14 …… Adhesive surface, 15 …… Paper edge 16 …… Unwinder stand, 19 …… Presser roll 20 …… Paper roll, 22 …… Paper presser 23 …… Air cylinder, 24 …… Support point 25 …… Swing arm, 29 …… Operating piece 30 …… Limit switch

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-63-60855 (JP, A) JP-A-54-147366 (JP, A) JP-A-61-206765 (JP, A)

Claims (1)

[Claims] 1. An unwinder device that operates while a web is spliced from an old rewinding roll to a new rewinding roll when the rewinding roll is replaced, so that the old web fed from the old rewinding roll can be prevented from loosening. A paper roll which is supported downwardly, and a new web end having a bonding surface formed in the width direction in advance at a proper position between the paper roll and the old rewinding roll is rotatably mounted close to the old web. A new rewinding roll, a pressing unit that presses the old web against the peripheral surface of the new rewinding roll to adhere it to the adhesive surface of the new web, and is interposed between the paper roll and the old rewinding roll. Of the two sides of the old web that is being fed out, the tension roll that can make contact with the peripheral surface of the side where the new rewinding roll is present, and the tension roll can be swung almost vertically in the feeding direction of the old web. A swing arm pivotally supported on the air cylinder, an air cylinder that swings the swing arm with adjustable air pressure, and a swing arm that rotates against the driving force of the air cylinder to rotate the old and new webs. An unwinder device, comprising: an adhesion detecting unit that detects that the above-mentioned adhesion has been made.