JP7164390B2 - pasting device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an affixing device for affixing a tape for connection to a seam of a web.

Conventionally, when processing a long web such as film, paper, cloth, or metal foil, it is unwound from a core provided in an unwinding device. At this time, when most of the old web has been unwound from the old core, a splicing device has been proposed in which a new web is unwound from a full new core and the start end of the new web is joined to the end of the old web with tape. ing. This splicing device connects the old web and the new web by sticking tapes to the front and back surfaces of the seams of the old web and the new web.

JP 2017-154898 A

In some cases, the web obtained by joining the old web and the new web as described above is composed of two layers of a processed film and a protective film that protects the processed film. At that time, the protective film is peeled off from the processed film, and then only the processed film is processed.

However, when the protective film is peeled off from the processing film, the tape on the back side is also peeled off, so the seam of the processing film is only the tape on the front side, and there is a problem that the strength of the joint portion is weakened. .

SUMMARY OF THE INVENTION Therefore, in view of the above problems, it is an object of the present invention to provide a sticking device that sticks a tape to the back side of the seam when the tape is stuck only to the front side of the seam between the old web and the new web. aim.

The present invention relates to a lamination apparatus that affixes and connects a reinforcing back side tape to the back side of the seam of the main web, which is connected to the seam surface of the main web with a front side tape and is traveling at a constant running speed V, a sensor for detecting the front side tape; a suction roll that sucks the reinforcing back side tape and rotates; and a control section, wherein the control section presses the suction roll and the The angle of the reinforcing back side tape sucked to the initial position by the suction roll is stored as an initial angle in order to press the conveying roll relatively close and stick the reinforcing back side tape to the back side of the seam. ,
A contact angle θ0° of the suction roll pressed by the conveying roll to contact the main web is stored based on the initial angle, and the suction is performed when the sensor detects the front side tape. The rotation angle θ1° of the reinforcing back tape on the roll is detected, the suction roll is pre-rotated at a predetermined preliminary speed V′, and then accelerated at the angular acceleration α for the t seconds to press the reinforcing back tape. The rotation speed on the outer peripheral surface of the suction roll is rotated at the running speed V, and in order to rotate (θ0-θ1)° in the t seconds,

θ0−θ1=V′·t+(α·t ² )/2

and the preliminary speed V' (provided that V'<V) are set so as to satisfy the following.

According to the invention, a backing tape can be applied to the back side of the seam of the main web.

FIG. 4 is a side view of the attaching device showing one embodiment of the present invention when the front side tape of the main web comes to the position of the sensor. FIG. 4 is a side view of the attaching device in which the back side tape is attached to the seam of the main web. FIG. 4 is a side view of the sticking device after sticking the back side tape. FIG. 4 is a side view of a state in which a front side tape and a back side tape are attached to a seam of a web; FIG. 4 is a side view of a state in which a front side tape is attached to the main web; FIG. 4 is a side view of a state in which a back tape is attached to a follower web; FIG. 4 is a side view of a state in which a front side tape and a back side tape are attached to a main web; It is a block diagram of a sticking device.

A sticking device 10 according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 8. FIG. In this embodiment, in the upstream process of the bonding device 10, the end of the old web W unwound from the old core of the unwinding device and the new web W unwound from the new core are separated. It is assumed that a front side tape 52 and a back side tape 54 are affixed and connected by a connecting device to the front side and the back side of the starting end, respectively.

As shown in FIG. 4, the web W consists of a main web W1 and a follower web W2 that protects the main web W1. The main web W1 is film, paper, cloth, metal foil, or the like. The secondary web W2 is a film or the like attached to the back surface of the main web W1.

(1) Configuration of Sticking Apparatus 10 The configuration of the sticking apparatus 10 will be described with reference to FIG.

A frame 12 constituting the main body of the sticking device 10 is mounted on a horizontal mounting surface. As shown in FIG. 1, a first guide roll 14 is provided on top of the frame 12 to carry in a two-layer web W traveling from an upstream splicing device (not shown).

A second guide roll 16 is provided below the first guide roll 14 for horizontally turning the vertically running web W by passing the first guide roll 14 .

A pair of upper and lower stripping rolls 18 and 20 are provided on the side of the second guide roll 16 . The web W is stripped vertically by passing between the upper stripping roll 18 and the lower stripping roll 20, with the main web W1 running upward and the slave web W2 running downward.

A third guide roll 22 is provided below the underlayer peeling roll 20 . The follower web W2 reaches the winding core 24 via the third guide roll 22 . The winding core 24 rotates according to the running speed of the follower web W2, and winds up the follower web W2.

A fourth guide roll 26 is provided above the upper peeling roll 18 to guide the peeled main web W1 upward.

A fifth guide roll 28 is provided above the fourth guide roll 26 to turn the vertically running main web W1 in the horizontal direction and carry it out to a downstream coating apparatus or the like.

A conveying roll 30 is provided between the fourth guide roll 26 and the fifth guide roll 28 to hold the vertically running main web W1 and convey it from the fourth guide roll 26 to the fifth guide roll 28 . The transport roll 30 is provided with a roll moving device 32 that moves the transport roll 30 in the left-right direction. This roll moving device 32 is composed of, for example, an air cylinder.

The fourth guide roll 26 or the fifth guide roll 28 may be provided with a moving device interlocked with the transport roll 30 and used to adjust the path length variation of the web W when the transport roll 30 is moved.

A suction roll 34 is provided beside the transport roll 30 with the main web W1 interposed therebetween. The suction roll 34 has a plurality of suction holes on its outer peripheral surface, and the reinforcing back tape 36 is sucked in the width direction by the suction device 44 shown in FIG. Rotate.

A sensor 38 is provided between the upper peeling roll 18 and the fourth guide roll 26 to detect the front side tape 52 attached to the main web W1. The sensor 38 is, for example, a photoelectric sensor.

(2) Electrical Configuration of Sticking Apparatus 10 Next, the electrical configuration of the sticking apparatus 10 will be described with reference to the block diagram of FIG. As shown in FIG. 8, the controller 40 of the attaching device 10 includes a conveying motor 42 for conveying the web W, and a suction device comprising a compressor for sucking the reinforcing back tape 36 from the plurality of suction holes of the suction roll 34. 44, a rotating device 46 including a motor for rotating the suction roll 34 and an encoder device provided on the rotating shaft of the suction roll 34, a roll moving device 32 consisting of an air cylinder, a sensor 38, and the upper peeling roll 18 are rotated. A rotating device 48 including a motor is connected.

(3) Operating State of Sticking Apparatus 10 Next, the operating state of the sticking apparatus 10 will be described with reference to FIGS. 1 to 7. FIG.

First, the webs W connected by a connecting device (not shown) are composed of a main web W1 and a sub web W2 which are laminated in two layers as shown in FIG. The tape 52 and the back side are connected by the back side tape 54, and are running at a running speed V.

Next, the web W running at the running speed V is conveyed from the first guide roll 14 to the bonding device 10 . The travel speed V at this time is determined by the transport motor 42 .

After passing through the first guide roll 14 , the web W passes through the second guide roll 16 and between the upper stripping roll 18 and the lower stripping roll 20 . At this time, the upper peeling roll 18 rotates while pressing the lower peeling roll 20, the web W is peeled off into the main web W1 and the sub web W2, and the main web W1 shown in FIG. The trailing web W2 shown at 6 runs downward.

Next, the follower web W2 shown in FIG. 6 passes through the third guide roll 22 and is wound by the winding core 24 rotating at a predetermined rotational speed.

Next, the main web W1 travels in the vertical direction and is carried out through the fourth guide roll 26, the transport roll 30, and the fifth guide roll . At this time, the transport roll 30 is positioned by the roll moving device 32 so as to be separated from the suction roll 34 .

Next, as shown in FIG. 1 , when the sensor 38 detects the front tape 52 , the control unit 40 causes the transport roll 30 to move while the front tape 52 runs between the suction roll 34 and the transport roll 30 . It is moved by the roll moving device 32 and pressed against the reinforcing back tape 36 of the suction roll 34 . As a result, the back surface of the seam 50 of the main web W1 shown in FIG.

At this time, the back reinforcing tape 36 sucked by the suction roll 34 is controlled to be positioned at the seam 50 . This control has three problems.

First, it is necessary to press the seam 50 of the main web W1 against the suction roll 34;

Secondly, it is necessary to match the rotation speed of the suction roll 34 with the running speed of the main web W1 when pressing.

Thirdly, when pressing, the position of the reinforcing backside tape 36 sucked by the rotating suction roll 34 must be the position of the seam 50 pressed by the conveying roll 30 .

A method for solving these problems will be described. Let L be the distance on the conveying path from the sensor 38 to the pressing position of the conveying roll 30, and V be the travel speed.

The first problem is that the transport roll 30 is moved by the roll moving device 32 so that the seam 50 of the main web W1 is pressed against the suction roll 34 after L/V=t seconds after the sensor 38 detects the front side tape 52. It can be solved by letting

The second problem can be solved by preliminarily rotating the suction roll 34 at a preliminary speed V′ and then accelerating it at an angular acceleration α for t seconds so that the rotational speed on the outer peripheral surface becomes the running speed V. However, preliminary speed V'<running speed V. i.e.

V=α·t+V′ (1)

is.

The third problem is solved as follows. First, an operator causes the reinforcing back tape 36 on the suction roll 34 to be sucked to a preset initial position, and the controller 40 stores the initial angle at this initial position as 0°, for example. Further, the control unit 40 stores in advance the position of the suction roll 34 pressed by the transport roll 30 to contact the main web W1, that is, the contact angle θ0° based on the initial angle of 0°. . Furthermore, the control unit 40 uses the encoder device of the rotating device 46 to detect the rotation angle θ1° of the reinforcing back tape 36 on the suction roll 34 when the sensor 38 detects the front tape 52 . Then, it is rotated by (θ0-θ1)° in t seconds. For this,

θ0−θ1=V′·t+(α·t ² )/2 (2)

becomes. Determine α and V ′ so as to satisfy the equations (1) and (2).

When the transport roll 30 holding the main web W1 is moved laterally by the roll moving device 32, the tension of the main web W1 may change. 30, the movement distance of the transport roll 30 is minimized, and the tension of the main web W1 does not change even if the transport roll 30 moves.

Further, when the web W is a transparent film, the front side tape 52 is composed of a colored tape or a reflective tape. This allows the sensor 38 to easily detect the colored front tape 52 on the transparent film.

(4) Effect According to this embodiment, after the slave web W2 is peeled off from the main web W1, the reinforcing back side tape 36 is attached to the seam 50 of the main web W1. can be reliably connected by the front side tape 52 and the reinforcing back side tape 36, respectively.

Further, when connecting the reinforcing back tape 36, the rotating state of the suction roll 34 and the movement of the transport roll 30 are combined, so the reinforcing back tape 36 can be reliably connected to the joint 50 of the main web W1.

Further, since the reinforcing back side tape 36 is attached to the running main web W1, there is no need to stop the running line.

Further, since the conveying roll 30 is pressed against the suction roll 34 to adhere the reinforcing back side tape 36, a large impact is not applied to the main web W1 and wrinkles are not generated in the main web W1. In particular, the suction roll 34 incorporating the suction device 44 is heavier than the transport roll 30, but since the suction roll 34 is fixed and the transport roll 30 is moved, scratches and wrinkles are generated by the main web W1. do not do.

Further, since the reinforcing back side tape 36 can be automatically attached to the main web W1, there is no need for an operator to do the work.

(5) Modification In the above embodiment, the suction roll 34 is fixed and the transport roll 30 is moved by the roll moving device 32. Instead, the transport roll 30 is fixed and the suction roll 34 is moved by the roll moving device 32. to press the reinforcing backside tape 36 against the seam 50 of the main web W1.

While one embodiment of the invention has been described above, this embodiment is provided by way of example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

DESCRIPTION OF SYMBOLS 10... Pasting apparatus, 12... Frame, 18... Upper peeling roll, 20... Lower peeling roll, 30... Conveying roll, 32... Roll moving device, 34... Suction roll 36 Reinforcing back tape 38 Sensor 40 Control unit 52 Front tape

Claims (6)

In a lamination device that adheres and connects a reinforcing back side tape to the back side of the seam of the main web, which is running at a constant running speed V, the seam surfaces of the main web being connected by the front side tape,
a sensor that detects the front tape;
a suction roll on which the reinforcing backside tape is sucked and which rotates;
a conveying roll that embraces the running main web and presses the main web against the suction roll at a position separated by a distance L from the sensor;
a control unit;
has
After a predetermined time of t seconds (where t=L/V) from when the sensor detects the front tape, the control unit presses the suction roll and the transport roll relatively close to each other to form the seam. In order to stick the reinforcing back side tape to the back side of
storing the angle of the reinforcing back tape sucked to the initial position on the suction roll as the initial angle;
storing, based on the initial angle, a contact angle θ0° of the suction roll that is pressed by the transport roll and with which the main web is brought into contact;
Detecting a rotation angle θ1° of the reinforcing back tape on the suction roll when the sensor detects the front tape,
The suction roll is preliminarily rotated at a predetermined preliminary speed V′, and then accelerated at the angular acceleration α for the above t seconds, and the rotational speed of the suction roll on the outer peripheral surface when pressing the reinforcing back tape is set to the above. It rotates at a running speed V,
In order to rotate (θ0-θ1)° in the t seconds,

θ0−θ1=V′·t+(α·t ² )/2

The angular acceleration α and the preliminary speed V' (where V'<V) are set so as to satisfy
pasting device. The position of the rotating suction roll is fixed,
a roll moving means for moving the transport roll holding the main web closer to the suction roll;
The application device according to claim 1. The position of the transport roll is fixed,
Having roll moving means for bringing the rotating suction roll closer to the transport roll,
The application device according to claim 1. The main web runs vertically,
The suction roll is arranged on one side of the main web,
The transport roll is arranged on the other side of the main web,
The application device according to claim 1. A sub web is laminated on the back surface of the main web,
A stripping roll for stripping the main web and the slave web is provided upstream of the transport roll,
The application device according to claim 1. back surfaces of the joints of the follower webs are connected by a back tape;
The application device according to claim 5.

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