JP2022068039A - Splice device of web unwinding device - Google Patents

Abstract

To provide a splice device of a web unwinding device that surely does not adhere to the outer peripheral surface of a new unwinding roll whether cutting a narrow web or a wide web.SOLUTION: The splice device includes: a pressing roll 24 that presses old web W from an old unwinding roll 8 onto double-sided adhesive tape 22 provided on new web W wound on a new unwinding roll 10; a travel part 42 that has a cutter 18 that cuts the old web W while traveling in the width direction of the old web W after connecting the old web W and the new web W; and a nozzle 56 that sprays air onto a cut end part W1 of the old web W while traveling with the cutter 18 in the width direction of the old web W.SELECTED DRAWING: Figure 13

Description

The present invention relates to a splice device for a web unwinding device.

There is an unwinding device that continuously unwinds webs such as films, papers, fabrics, and metal foils (see, for example, Patent Document 1). In this unwinding device, the web is fully wound from the unwinding roll (hereinafter referred to as "old unwinding roll") near the end of unwinding when the web is unwound and the web is running low without stopping the transport line. It can be replaced with a new unwinding roll (hereinafter referred to as "new unwinding roll"), and the splice device provided in this unwinding device is the old web unwound from the old unwinding roll and the new unwinding. Perform splice work to stack new webs unwound from the take-out roll.

Conventionally, in a splice device, after the old web and the new web are bonded together, the old web is cut in the width direction with a cutter, and the cut end portion of the old web is electrostatically attached to the outer peripheral surface of the new unwinding roll. was there.

Therefore, the applicant first cuts the old web with a cutter and blows air from one nozzle on the outside of one side of the web so that the cut end of the old web sticks to the new web. A splice device for prevention has been proposed (see Patent Document 2).

Japanese Unexamined Patent Publication No. 2001-180853 Japanese Patent No. 5085301

However, in the above splice device, since one nozzle blows air from the outside of one side of the web, in a wide web, the air does not hit the cut end on the opposite side of the nozzle, which is new. There is a problem that it may stick to the outer peripheral surface of the unwinding roll due to static electricity.

Therefore, in view of the above problems, the present invention is a splice device for a web unwinding device that does not reliably adhere to the outer peripheral surface of the new unwinding roll at the time of cutting, regardless of whether the web has a narrow width or a wide web. The purpose is to provide.

In the present invention, two unwinding rolls around which a web is wound are rotatably attached between a pair of left and right arms, and the web is full from the old unwinding roll which is about to finish unwinding the web. In the splice device of the web unwinding device, which is replaced while unwinding the web by rotating the arm on the new unwinding roll wound on the roll, the new web is provided on the new unwinding roll. A cutter that cuts the old web while traveling in the width direction of the old web after connecting the pressing roll that presses the old web from the old unwinding roll to the adhesive member and the old web and the new web. It is a splice device of a web unwinding device having a traveling unit having a traveling portion and a nozzle for blowing air to a cut end portion of the old web while traveling in the width direction of the old web together with the cutter.

According to the present invention, by blowing air from the nozzle while the nozzle travels in the width direction of the old web together with the traveling portion, all the air hits from one end to the other end in the width direction of the old web, and the cut end of the old web. The part does not stick to the new web.

It is a front view of the unwinding apparatus of one Embodiment of this invention. It is a block diagram of an unwinding device. It is a drawing of the 1st process of an unwinding apparatus. It is also a drawing of the second step. It is also a drawing of the third step. It is also a drawing of the fourth step. It is also a drawing of the fifth step. It is also a drawing of the sixth step. It is a perspective view of the splice device, and is the figure which omitted the pressing roll and the guide roll. It is a side view of the splice device in a state where the old web is going to be niped into the new web with a pressing roll. It is a front view of the splice device in a state which is about to cut a web. It is a top view of the splice device. It is a bottom view of a splice device in a state where the web is cut by a cutter while blowing air with a nozzle.

Hereinafter, the long web W unwinding device 100 and the splice device 20 according to the embodiment of the present invention will be described with reference to FIGS. 1 to 13. The web W is a long film, paper, cloth, metal leaf, or the like.

(1) Structure of Unwinding Device 100 The unwinding device 100 having the splice device 20 will be described with reference to FIGS. 1 and 3.

FIG. 1 is a front view of the unwinding device 100, and FIG. 3 is a side view. A pair of left and right support legs 3 and 3 are erected from the base 1 of the unwinding device 100, and a rotary support shaft 2 is rotatably erected on the pair of left and right support legs 3 and 3.

A pair of left and right arms 4, 4 and a pair of left and right arms 6, 6 project from the rotation support shaft 2 at a distance of 180 °. A winding roll for winding the web W is rotatably attached to the pair of left and right arms 4 and 4. Hereinafter, the unwinding rolls attached to the arms (hereinafter referred to as “old arms”) 4 and 4 are referred to as “old unwinding rolls” 8. Further, the unwinding roll 10 is rotatably attached to the pair of left and right arms (hereinafter referred to as "new arms") 6 and 6. Hereinafter, the unwinding roll 10 attached to the pair of left and right arms 6 and 6 is referred to as a "new unwinding roll" 10.

The old unwinding roll 8 and the new unwinding roll 10 have a bobbin for winding the web W attached to the rotating shaft thereof. Then, in the following description, when the old web (hereinafter referred to as "old web") W wound on the old unwinding roll 8 is low, the new web (hereinafter referred to as "old web") from the full-rolled new unwinding roll 10 is used. W shall be drawn out (referred to as "new web"). A double-sided adhesive tape 22 is attached to the tip of the new web W of the new unwinding roll 10 in the width direction so that it can be connected to the old web W.

Between the pair of left and right old arms 4 and 4 and the new arm 6 and 6, a pair of left and right auxiliary arms 13 and 13 and a pair of left and right auxiliary arms 15 and 15 project from the rotation support shaft 2. Auxiliary rolls 12 are rotatably attached to the pair of left and right auxiliary arms 13 and 13, and auxiliary rolls 14 are rotatably attached to the pair of left and right auxiliary arms 15 and 15. The four sets of the old arms 4, 4, the auxiliary arms 13, 13, the new arms 6, 6, and the auxiliary arms 15, 15, respectively, protrude from the rotation support shaft 2 at 90 ° intervals.

As shown in FIG. 1, a motor (hereinafter, referred to as “main motor”) 7 for rotating the rotary support shaft 2 is attached to one of the support legs 3. The main motor 7 is, for example, an AC servo motor.

As shown in FIG. 1, the old unwinding roll 8 rotates by transmitting power from a motor (hereinafter referred to as “old motor”) 9 provided on the support legs 3 by a chain or the like. The old motor 9 is, for example, an AC servo motor.

As shown in FIG. 1, the new unwinding roll 10 rotates by transmitting power from a motor (hereinafter referred to as “new motor”) 11 provided on the support legs 3 by a chain or the like. The new motor 11 is, for example, an AC servo motor.

As shown in FIG. 3, behind the old unwinding roll 8, a splice device 20 for superimposing the old web W and the new web W is provided. The splice device 20 will be described in detail later.

(2) Splice device 20
Next, the structure of the web W splice device 20 will be described with reference to FIGS. 9 to 13.

The pair of left and right splice arms 26, 26 can rotate around a rotation shaft 28 provided on a frame (not shown) on the side of the pair of left and right support legs 3, 3, and the pair of left and right splice arms 26, 26. The tip of the new web W can approach or move away from the outer peripheral surface of the new web W wound on the new unwinding roll 10. The pair of left and right splice arms 26, 26 are rotated around a rotation shaft 28 by an arm air cylinder attached to a frame (not shown) (see FIG. 2).

A guide roll 16 is rotatably attached to the tips of a pair of left and right splice arms 26, 26 using a pair of left and right bearings 32.

A pressing roll 24 is rotatably attached to a pair of left and right splice arms 26, 26 between the guide roll 16 and the rotating shaft 28. The pressing roll 24 is connected to the air cylinders 36, 36 attached to the inside of the pair of left and right splice arms 26, 26, respectively, via the pair of left and right crank members 34. Then, by operating the pair of left and right air cylinders 36, 36, respectively, the pressing roll 24 attached to the pair of left and right crank members 34, 34 is attached to the outer peripheral surface of the new web W wound on the new unwinding roll 10. Web W can be niped.

A cutter driving device 30 is attached between the pressing roll 24 and the guide roll 16 in the left-right direction (the width direction of the web W). The cutter drive device 30 will be described. The cutter drive device 30 has a beam member 38 erected between a pair of left and right splice arms 26, 26. A moving device 40 made of a rectangular parallelepiped air slide cylinder is attached to the lower surface of the beam member 38. On the lower surface of the moving device 40, a traveling portion 42 that moves together with the piston of the moving device 40 is provided. The traveling portion 42 is provided with a plate-shaped cutter mounting portion 44 on the lower surface thereof, and a parallelogram cutter 18 for cutting the web W is mounted on the cutter mounting portion 44. The lower end of the cutter 18 protrudes from the lower surface of the cutter mounting portion 44.

A standby member 48 is attached to one end of the moving device 40. In the standby member 48, the support member 50 extends downward from one end surface of the moving device 40, and the standby plate 52 bent inward from the lower end portion of the support member 50 and horizontally bent into an L-shaped cross section. It is attached. When the traveling portion 42 is in the standby position before cutting the old web W, the cutter 18 is located above the standby plate 52, and the blade of the cutter 18 is not exposed.

A damper 54 is attached to the lower surface of the other end of the moving device 40 to determine the position where the traveling portion 42 stops and to soften the shock at the time of stopping.

A nozzle 56 that blows air to the old web W is attached to the traveling portion 42. In the nozzle 56, the outlet 58 is arranged behind the cutter 18 with respect to the moving direction of the traveling portion 42, and is located behind the cutter 18 with respect to the moving direction of the web W. The nozzle 56 is provided with a first pipe portion 60, a second pipe portion 62, and a third pipe portion 64 in succession, and the first pipe portion 60 is arranged in parallel with the extending direction of the cutter 18. A member having an outlet 58 at its lower end, the air blowing direction is orthogonal to the moving direction of the cutter 18 and is orthogonal to the moving direction of the old web W at the cutting position. The second pipe portion 62 is a member extending from the upper end of the first pipe portion 60 to the front of the traveling portion 42. The third pipe portion 64 is a member extending upward from the front end portion of the second pipe portion 62 extending forward. The first pipe portion 60, the second pipe portion 62, and the third pipe portion 64 are formed in a substantially S shape.

One end of a bellows-shaped hose 66 is attached to the upper end of the third pipe portion 64, which is the base of the nozzle 56. The hose 66 has flexibility, is easily bent, and has a bellows shape, so that the hose 66 can be expanded and contracted in the length direction. The other end of the hose 66 is fixed to a base point member 68 provided above the pair of left and right splice arms 26, 26 and on the rotation shaft 28 side of the pressing roll 24. One end of the air pipe 70 is attached to the base point member 68, and a compressor 72 for supplying air is connected to the other end of the air pipe 70. When air is supplied from the compressor 72, air is blown out from the outlet 58 through the air pipe 70, the base point member 68, the hose 66, and the nozzle 56.

When the traveling portion 42 is moved from one end to the other by the moving device 40, the nozzle 56 moves at the same time as the cutter 18, and in this case, the hose 66 has flexibility and elasticity, so that the base point member 68 Can be moved along the width direction of the web W around the center.

(3) Electrical Configuration of Unwinding Device 100 Next, the electrical configuration of the unwinding device 100 will be described with reference to the block diagram of FIG.

The control unit 80 composed of a microcomputer includes a main motor 7 that rotates a rotation support shaft 2, an old motor 9 that rotates an old unwinding roll 8, a new motor 11 that rotates a new unwinding roll 10, and an arm of a splice device 20. An air cylinder 74 for air, a moving device 40, a compressor 72, and an air cylinder 36 for nip are connected.

(4) Step of Operation of Unwinding Device 100 Hereinafter, a splice step of the unwinding device 100 of Web W will be described with reference to FIGS. 3 to 8.

(4-1) First Step As shown in FIG. 3, in the first step, the control unit 80 uses the old unwinding roll 8 attached to the pair of left and right old arms 4 and 4 arranged in the horizontal direction. The old web W from the old unwinding roll 8 is rotated in a counterclockwise direction by a motor 9 at a rotation speed V, and the old web W from the old unwinding roll 8 is used as an external coating device, a heating device, or a transfer roll 5 provided on a frame (not shown). Supplied from. The rotation speed V is controlled by the control unit 80 so as to match the traveling speed of the old web W (for example, 2 to 100 m / min). Further, a new unwinding roll 10 in which a new new web W is fully wound is attached to a pair of left and right new arms 6 and 6 arranged in the horizontal direction.

(4-2) Second Step As shown in FIG. 4, in the second step, the control unit 80 rotates when the old web W wound on the old unwinding roll 8 is running low and the unwinding is about to end. Rotate the old arms 4, 4 and the new arms 6, 6 around the support shaft 2 in the clockwise direction, and move the positions of the old unwinding roll 8 and the new unwinding roll 10 toward the opposite positions by 180 °. start.

(4-3) Third Step As shown in FIG. 5, in the third step, the control unit 80 rotates the old arms 4 and 4 and the new arms 6 and 6 in the clockwise direction while rotating the old unwinding roll. The old web W supplied from No. 8 is continuously supplied via the auxiliary roll 12 and the transport roll 5.

(4-4) Fourth Step As shown in FIG. 6, in the fourth step, the control unit 80 rotates the old arms 4, 4 and the new arms 6, 6 in the clockwise direction, and the old unwinding roll. The splice arms 26, 26 having the guide roll 16, the pressing roll 24, and the cutter 18 are brought closer to the old web W supplied from No. 8 by rotating around the rotation shaft 28, and the old web W is brought close to the old web W by the pressing roll 24. Press down. Further, the new unwinding roll 10 is rotated in the counterclockwise direction by the new motor 11 at a rotation speed V. This fourth step will be described in detail later.

(4-5) Fifth Step As shown in FIG. 7, in the fifth step, the control unit 80 uses the guide roll 16 while rotating the old arms 4, 4 and the new arms 6, 6 in the clockwise direction. While holding down the running old web W, the old web W is pressed (nip) against the double-sided adhesive tape 22 of the new web W of the rotating new unwinding roll 10 with the old web W by the pressing roll 24. The new web W is spliced on top of each other, and then the old web W is cut with the cutter 18. The cutting time is 1 to 3 seconds. This fifth step will be described in detail later.

(4-6) 6th Step As shown in FIG. 8, in the 6th step, the control unit 80 stops the rotation of the old unwinding roll 8 and the new unwinding roll 10 at 180 ° opposite positions and rotates. The new web W will continue to be supplied from the new unwinding roll 10. Further, the old unwinding roll 8 is rotated in the reverse direction, and all the old web W remaining on the old unwinding roll 8 is wound up.

(5) Operating State of Splice Device 20 Next, the operating state of the splice of the splice device 20 in the fourth step and the fifth step described above will be described in more detail.

In the fourth step, as shown in FIG. 6, the control unit 80 rotates the splice arm 26 around the rotation shaft 28, presses the old web W downward with the pressing roll 24, and newly winds the old web W. Bring it closer to the outer peripheral surface of the new web W of the take-out roll 10.

Next, in the fifth step, as shown in FIGS. 7 and 10, in the control unit 80, the double-sided adhesive tape 22 attached to the outer peripheral surface of the new web W wound on the new unwinding roll is pressed by the pressing roll 24. When approaching the position of, the pressing roll 24 is operated by the air cylinder 36, and the old web W is niped into the double-sided adhesive tape 22 of the new web W. At this time, the old web W is running in a state of being bridged between the pressing roll 24 and the guide roll 16.

Next, as shown in FIGS. 10 to 13, the control unit 80 mounts the cutter 18 of the traveling unit 42 between the pressing roll 24 and the guide roll 16 by using the moving device 40 of the cutter driving device 30. Move from one end to the other end of the passed old web W. At the same time, air is blown out from the nozzle 56 using the compressor 72. The nozzle 56 moves together with the cutter 18 while blowing air, and blows off the cut end portion W1 of the old web W cut by the cutter 18 to a position away from the outer peripheral surface of the new web W wound on the new unwinding roll 10. .. That is, as shown in FIG. 10, the air blown out from the outlet 58 of the nozzle 56 blows the old web W from the position cut by the cutter 18 toward the cut ends W1 and W2.

As the cutter 18 cuts the old web W, the cut end portion W1 of the old web W becomes a triangle as shown in FIG. The reason for this is that the cutter 18 is run in the width direction while running the old web W, so that the cutting direction is slanted. As shown in FIG. 10, the cut end portion W1 (W2) of the old web W cut in this way hangs down at a position away from the outer peripheral surface of the new web W wound on the new unwinding roll 10. Then, the old unwinding roll 8 is rotated in the reverse direction, and all the old web W is wound around the old unwinding roll 8.

After the cutting of the old web W is completed, the control unit 80 reversely rotates the pair of left and right splice arms 26, 26 around the rotation shaft 28 to return to the standby position, and also runs with the cutter 18 and the nozzle 56. The portion 42 also returns the moving device 40 having the damper 54 from the other end to the position of the standby member 48 at one end of the moving device 40.

(6) Effect According to the present embodiment, the nozzle 56 that blows out air moves together with the cutter 18, and the cut end portion W1 of the old web W is wound around the new unwinding roll 10. What is the outer peripheral surface of the new web W? Since it blows out in different directions, regardless of whether the web W has a narrow width or a wide width, all the air hits the cut end W1 from one end to the other end in the width direction of the old web, and the new winding The cut end portion W1 (W2) of the old web W does not stick to the outer peripheral surface of the take-out roll 10.

Further, since the nozzle 56 has an outlet 58 behind the cutter 18 in the moving direction of the cutter 18 and behind the old web W in the moving direction of the old web W, the nozzle 56 has an outlet 58 immediately after being cut by the cutter 18. The cut end portion W1 of the old web W can be blown off without touching other parts.

Further, even if the nozzle 56 moves in the width direction of the old web W, since the nozzle 56 is connected to the hose 66 connected to the base point member 68, air can always be supplied from the compressor 72. In particular, since the hose 66 has flexibility and can be expanded and contracted in the length direction, the hose 66 can move around the base point member 68 in accordance with the movement of the nozzle 56.

Change example

In the above embodiment, the traveling unit 42 is traveled by the moving device 40 made of an air slide cylinder, but other moving devices such as a linear acting actuator device may be used.

Although one embodiment of the present invention has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

W ... Web, W1 ... Cut end, 8 ... Old unwinding roll, 10 ... New unwinding roll, 18 ... Cutter, 20 ... Splice device, 22 ... Double-sided Adhesive tape, 24 ... Pressing roll, 26 ... Splice arm, 28 ... Rotating shaft, 30 ... Cutter drive device, 40 ... Moving device, 42 ... Running part, 46 ... Cutter, 56 ... Nozzle, 58 ... Outlet, 66 ... Hose, 68 ... Base member, 72 ... Compressor, 80 ... Control unit, 100 ... Unwinding device

Claims (10)

Two unwinding rolls with the web wound are rotatably attached between the pair of left and right arms, and the web is fully wound from the old unwinding roll that is about to finish unwinding the web. In the splice device of the web unwinding device, which is replaced while unwinding the web by rotating the arm on the new unwinding roll.
A pressing roll that presses the old web from the old unwinding roll onto the adhesive member provided on the new web wound around the new unwinding roll.
A traveling unit having a cutter that cuts the old web while traveling in the width direction of the old web after connecting the old web and the new web.
A nozzle attached to the traveling portion and blowing air to the cut end portion of the old web while traveling in the width direction of the old web together with the cutter.
Web unwinding device splice device with. The nozzle is provided behind the cutter with respect to the moving direction of the traveling portion, and blows air to the cut end portion of the old web cut by the cutter.
The splice device of the web unwinding device according to claim 1. The nozzle is provided behind the cutter with respect to the moving direction of the old web and blows air onto the cut end of the old web cut by the cutter.
The splice device of the web unwinding device according to claim 1. The air blowing direction of the nozzle is orthogonal to the moving direction of the cutter and is orthogonal to the moving direction of the old web at the cutting position.
The splice device of the web unwinding device according to claim 1. One end of the hose is attached to the base of the nozzle.
A supply means for sending air is connected to the other end of the hose.
The hose moves along the width direction of the web as the nozzle travels.
The splice device of the web unwinding device according to claim 1. A base point member is provided above the traveling portion and at the center portion in the width direction of the web.
The other end of the hose is connected to the base point member,
The base point member is connected to the supply means,
The one end of the hose moves along the width direction of the web around the base point member.
The splice device of the web unwinding device according to claim 5. The hose is flexible and stretchable.
The splice device of the web unwinding device according to claim 6. The air blowing direction of the nozzle is orthogonal to the moving direction of the cutter and is orthogonal to the old web at the cutting position.
The splice device of the web unwinding device according to claim 1. A pair of left and right splice arms that are rotatably provided,
The pressing roll rotatably provided between the pair of left and right splice arms,
A moving device provided between the pair of left and right splice arms located on the tip side of the pressing roll, and
The moving unit is provided with the traveling portion so as to be able to travel.
The splice device of the web unwinding device according to claim 1. A guide roll is rotatably provided at the tips of the pair of left and right splice arms.
The old web is cut in the width direction by the cutter while being hung between the guide roll and the pressing roll.
The splice device of the web unwinding device according to claim 9.

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