JPH11286354A - Cutting device in web winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device for a web winder, which enhances an operation efficiency by automatically cutting the paper end a wound-up product roll. SOLUTION: In a single drum winder in which the outer circumference of a product roll R is brought into contact with the outer circumference of a rotating drum roll 3 so as to wind a web, the product roll R is floated up over the drum roll 3 by unloading arm 4, let a paper cutting knife 5 positioned outside the drum roll 3 rush into a web W, and the web W is thereby cut off. In a configuration in which a paper cutting knife 8 rushes in from the direction opposite to the running direction of the web W, both a paper pressing roll and a paper cutting guide are used wherein the former presses the web W onto a drum roll 6, and the latter forces the web W to creep into the underneath of the cutting blade of the paper cutting knife 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for a web winder. More specifically, the present invention relates to a cutting device in a single-drum type web winder for processing a web such as paper made in the next step or winding the web to a desired width and length as a product roll.

[0002]

2. Description of the Related Art Generally, a web take-up machine has a single drum type in which a product roll is brought into contact with one drum roll and winds the product roll, and a product roll contacts a valley between two parallel drum rolls. There is a two-drum type that lets you roll it up.
10 to 11 show a conventional example of a single-drum type web winder. In this web take-up machine, while the web W is cut into a predetermined width by the slitter 101, the product roll being wound is brought into contact with one drum roll 102, rotated, and wound up on the product roll R. It has become.

[0003]

However, in the above-mentioned conventional example, when the product roll R is wound up, the web is cut off by hand, and the paper end is fixed to the surface of the product roll with a tape or the like.
I try to take them out. However, manual paper cutting requires a lot of work, and a wide product roll requires a large amount of labor, resulting in poor efficiency.

[0004] In view of such circumstances, an object of the present invention is to provide a cutting device for a web take-up machine which automatically cuts a paper end of a wound product roll to improve work efficiency.

[0005]

According to a first aspect of the present invention, there is provided a web winding machine, wherein a cutting roll is provided with a guide roll for guiding a web having a wide web slit into a narrow width by a slitter. The first winding part and the second on both sides
A winding unit is provided, and the first winding unit swings a first drum roll provided on one side of the guide roll and a product roll wound in contact with the first drum roll. A first unloading arm for supporting, and a first paper cutting knife for cutting into the web between the first drum roll and a product roll floating from the first drum roll and cutting the web; The second winding unit includes a second drum roll provided on the other side of the second guide roll, and a second unloading arm that swingably supports a product roll that is wound in contact with the second drum roll. , A second paper cutting knife that cuts into the web by entering the web between the second drum roll and the product roll floating from the second drum roll. The cutting device in the web winder according to claim 2, wherein the web winder winds the web around a winding core by bringing an outer peripheral surface of a product roll to be wound into contact with a rotating drum roll. The product roll is rotatably supported, and an arc-shaped locus is drawn between a winding position where the product roll is brought into contact with a drum roll and a unloading position where the product roll is placed on a unloading table. It is provided with a swingable unloading arm for moving, and reciprocates between a cutting position along the outer periphery of the drum roll and where a web running from the drum roll to the product roll exists, and a standby position separated therefrom. It is movable, and when cutting the web, the outer side of the web running in contact with the outer periphery of the drum roll moves in the same direction as the running direction of the web,
And a paper cutting knife having a cutting blade at the front end. The cutting device in the web winding machine according to claim 3 is:
The drum roll has a vacuum device for adsorbing a web running in contact with the surface of the drum roll. The cutting device in the web winder according to claim 4, wherein the web winder winds the web around a winding core by bringing an outer peripheral surface of a product roll to be wound into contact with a rotating drum roll. The product roll is rotatably supported, and an arc-shaped locus is drawn between a winding position where the product roll is brought into contact with a drum roll and a unloading position where the product roll is placed on a unloading table. It is provided with a swingable unloading arm for moving, and reciprocates between a cutting position along the outer periphery of the drum roll and where a web running from the drum roll to the product roll exists, and a standby position separated therefrom. When the web is free to move and cuts the web, the paper cutting machine approaches the cutting position on the outside of the web running in contact with the outer periphery of the drum roll from a direction opposite to the running direction of the web, and has a cutting blade at the tip. A knife, a paper holding roll moving between a holding position for holding a web running in contact with the outer periphery of the drum roll on the drum roll near the cutting position on the drum roll, and a retreat position retracted therefrom; When the knife approaches the cutting position, the paper cutting guide pushes the web in contact with the outer periphery of the drum roll below the cutting blade of the paper cutting knife. 6. The cutting device according to claim 5, wherein the paper cutting guide is swingably attached to a bracket of the paper pressing roll, and the paper cutting guide is arranged along the web on the surface of the drum roll. The position can be freely changed between a position and a retracted position retracted upward from the position. The cutting device in the web winder according to claim 6, wherein the paper cutting knife is attached to a chain wound around a chain guide along a periphery of the drum roll and a guide sprocket at a position away from the drum roll. In this case, the paper cutting knife is reciprocated between the cutting position and the standby position by running the chain.

In the first aspect of the present invention, the first winding section may be constituted by the second invention and the second winding section may be constituted by the third invention. The two winding units may be constituted by the invention of claim 2, or may be constituted by the invention of claim 3.

According to the first aspect of the present invention, when the product roll is wound up, the first and second unloading arms are swung to lift the product roll from the surfaces of the first and second drum rolls. When the first and second paper cutting knives are inserted into the web running in the floating space, paper cutting can be performed without requiring any manual operation, and automatic product roll unloading can be performed. According to the invention of claim 2, the paper cutting knife is outside the web in contact with the surface of the drum roll in a state where the unloading arm is swung and the wound product roll is lifted off the drum roll. Therefore, the web located between the product roll and the drum roll can be cut only by moving the paper cutting knife to the cutting position. According to the invention of claim 3, since the web is adsorbed on the surface of the drum roll by the vacuum device of the drum roll, the web is not dragged when the web is cut by the paper cutting knife. Moreover, it can be cut into a beautiful cut. According to the fourth aspect of the invention, the paper cutting knife is at a position where the web is not in contact with the drum roll in a state where the unloading arm is swung and the wound product roll is floated from the drum roll. If the paper cutting knife is moved to the cutting position as it is, the paper cutting knife will go under the web, but if the web is held down by the paper holding roll and the paper cutting knife is advanced, the paper cutting guide will move the web to the cutting blade of the paper cutting knife. Since it is pushed downward, the web located between the product roll and the drum roll can be cut. According to the invention of claim 5, when the paper cutting guide is at the retracted position, it does not become an obstacle, and when it is at the guide position, the cutting edge of the paper cutting knife approaching from the opposite side to the running direction of the web. Since the web is guided to be pushed downward, the web can be cut reliably. According to the invention of claim 6, when the paper cutting knife is at the standby position, it does not hinder the running of the web, and when cutting, it moves along the outer circumference of the drum roll, so that the web is reliably cut. it can.

[0008]

Next, embodiments of the present invention will be described with reference to the drawings. The following embodiment is described in claim 1.
Applying the invention of claim 2 to the first winding section in the invention of
This is an example in which the invention of claim 3 is applied to the second winding section. FIG. 1 is a front view showing a web winding machine according to an embodiment of the present invention during a winding operation, FIG. 2 is an enlarged front view of a first winding unit,
FIG. 3 is an enlarged front view of the second winding unit, FIG. 4 is an enlarged front view of the paper press roll and the paper cutting guide, FIG. 5 is an explanatory view of the cutting operation of the first paper cutting knife, and FIG. 6 is a second paper cutting knife. FIG. 7 is an explanatory view of a cutting position by a paper cutting knife.

First, the basic structure of the web winding machine will be described with reference to FIG. W is a web such as paper, and S is a slitter. The web W is slit into an appropriate width by the slitter S. A guide roll G is disposed downstream in the traveling direction of the web W, and the right side in the figure is a first winding section 1 and the left side in the figure is a second winding section 2.

The first winding section 1 is configured as follows. A first drum roll 3 is disposed on the right side of the guide roll G, and a first unloading arm 4 is disposed on the right side thereof. 5 is a first paper cutting knife. A second drum roll 6 is disposed on the left side of the guide roll G, and a second unloading arm 7 is disposed on the left side thereof. 8 is a second paper cutting knife.

The first drum roll 3 has a built-in vacuum device. For example, a large number of small holes are formed on the surface of the first drum roll 3 and a vacuum pump or the like is passed through a picture chamber inside the first drum roll 3. And the like are used so that air is sucked from the roll surface. This vacuum device adsorbs the web on the roll surface so that the web does not move, so that the cutting by the paper cutting knife can be surely performed.

The first unloading arm 4 is swingable by a hydraulic cylinder (not shown) or the like, and is capable of rotatably supporting a take-up core 9 at a tip thereof. As shown,
When the product roll R being wound is brought into contact with the rotating first drum roll 3, the product roll R is rotated by friction, and the web W can be wound.

The second drum roll 6 uses a drum roll without a vacuum device to hold the web W with a paper press roll (not shown). The second unloading arm 7 is substantially the same as the first unloading arm 4. It has the same configuration.

Next, details of the cutting device will be described. FIG.
The first winding unit 1 will be described in detail based on the following. 11 is a chain guide having a curved shape along the outer periphery of a substantially upper half of the first drum roll 3. A guide sprocket 12 is mounted on one end of the chain guide 11, and a guide sprocket 13 is disposed at a position away from the first drum roll 3. A driving sprocket 14 is rotated by a driving motor.

The chain guide 11, guide sprockets 12, 13 and drive sprocket 14 are arranged at both ends of the first drum roll 3, and a chain 15 is wound around each of them. To the chains 15 at both ends of the first drum roll 3, first paper cutting knives 5 having a length substantially equal to the axial length of the first drum roll 3 are attached.

The first paper cutting knife 5 has a cutting blade 5b and a stopper piece 5c attached to the tip of a main body 5a, and an auxiliary roller 5d is pivotally supported as shown in FIG.

The first paper cutting knife 5 shown by a solid line in FIG. 2 shows a standby position. From this state, the chain 15 can be moved in the direction of arrow a to advance to a cutting position beyond the imaginary line illustrated position. When the stopper piece 5c advances to a position where it comes into contact with the stopper 16 attached to the chain guide 11, it stops. Thereafter, when the chain 15 is reversed, the first paper cutting knife 5 retreats to the original standby position.

In the above configuration, since the first paper cutting knife 5 moves outside the web W wound around the first drum roll 3, the product roll R can be slightly lifted from the first drum roll 3. For example, the web W between the first drum roll 3 and the product roll R can be cut.

Next, the details of the second winding section 2 will be described with reference to FIGS.
It will be described based on. Reference numeral 21 denotes a chain guide, the second
The drum roll 6 has a curved shape along the outer periphery of substantially the upper half.

A guide sprocket 22 is axially mounted on one end of the chain guide 21.
The drive sprocket 24 is disposed at a position away from the drive sprocket. The above chain guide 21 and guide sprocket 2
2. The drive sprockets 24 are arranged at both ends of the second drum roll 6, and a chain 25 is wound around each. Chains 25 at both ends of the second drum roll 6
Further, a second paper cutting knife 8 having a length substantially equal to the axial length of the second drum roll 6 is attached to the second drum roll 6.

The second paper cutting knife 8 has a cutting blade 8b and a stopper piece 8c attached to the tip of a main body 8a, and an auxiliary roller 8d is pivotally supported as shown in FIG.

The second paper cutting knife 8 indicated by a solid line indicates a standby position. When the chain 25 is moved in the direction of the arrow b from this state, the chain 25 can be advanced to the position shown by the imaginary line, and the stopper piece 8c is moved by the chain guide. When it hits a stopper 26 attached to 21, it stops. Then chain 2
When 5 is reversed, the second paper cutting knife 8 retreats to the original standby position.

In the configuration of the second winding section 2, even if the second paper cutting knife 8 is advanced, the web W cannot be cut into the gap between the web W and the second drum roll 6, so that the web W cannot be cut. A next paper press roll 30 and a paper cutting guide 40 are provided.

As shown in FIGS. 3 and 4, the paper press roll 30 includes a support frame 31 having substantially the same length as the second drum roll 6, an elevating cylinder 32 for raising and lowering the support frame 31, and a support frame 31. And a roll 33 attached to the lower end of the roller. This roll 3
The number 3 is axially fixed at appropriate intervals along the width direction of the second drum roll 6.

As shown in FIG. 4, the paper cutting guide 40 includes a plurality of guide arms 41 pivotally mounted on the lower end of the support frame 31 and a plurality of guide arms 41.
And a swing cylinder 43 for swinging the guide arm 41.

When the swing cylinder 43 is contracted, the guide arm 41 assumes a substantially horizontal guide position indicated by a solid line,
When the oscillating cylinder 43 is extended, the guide arm 41 assumes a substantially vertical retreat position shown by an imaginary line.

As shown in FIG. 4, the web W is pressed against the surface of the second drum roll 6 by the paper pressing roll 30, and the paper cutting guide 40 is set to the horizontal guide position, and as shown in FIG. When the second paper cutting knife 8 is moved forward, the guide rod 42 goes under the cutting blade 8b, and the web W is bent in a Z-shape, so that the web W is cut by further moving the cutting blade 8b. Become.

The cutting position of the web W by the first and second paper cutting knives 5 and 8 is determined when the new winding core 9 is touched to the drum rolls 3 and 6, as indicated by reference numeral c in FIG. The positions are slightly protruded from the contact points in the rotation direction of the drum rolls 3 and 6, and the mounting positions of the stoppers 16 and 26 with respect to the chain guides 11 and 21 can be changed so that the amount of protrusion L can be changed.

Next, the paper cutting operation in the above embodiment will be described. 7 is an explanatory diagram of a paper cutting process, FIG. 8 is an explanatory diagram of a paper cutting process, and FIG. 9 is an explanatory diagram of a unloading process.

FIG. 1 shows a state during winding, in which the first and second paper cutting knives 5 and 8 are at the standby position. When the winding of the product roll R is completed, the unloading arms 4 and 7 are slightly raised as shown in FIG. 8, and the product roll R is lifted from the first and second drum rolls 3 and 6. Thereby, the rotation of the product roll R stops, and the product rolls R, R and the first,
The web W between the second drum rolls 3 and 6 does not move, causing a slack. Next, in the second winding section 2, the paper holding roll 30 is lowered to set the paper cutting guide 40 to the guide position. Then, almost simultaneously, the first and second paper cutting knives 5, 8 are advanced.

FIG. 9 shows a state where the first and second paper cutting knives 5 and 8 are protruding into the web W.
As shown in FIG. When the paper cutting of the web W is completed in this way, the paper pressing roll 30 and the paper cutting guide 40 are retracted from the second drum roll 6 as shown in FIG.
The unloading arms 4, 7 are turned outward. In this state, if the paper roll fixing process of the product roll R is performed, the product roll R can be detached from the unloading arms 4 and 7 and shipped.

[0032]

According to the first aspect of the present invention, when the product roll is wound up, the first and second unloading arms are swung to lift the product roll from the surfaces of the first and second drum rolls. And the first and second webs are
When the paper cutting knife is inserted, paper cutting can be performed without requiring any manpower, and automatic unloading of product rolls becomes possible. According to the invention of claim 2, the unloading arm is swung, and the wound product roll is lifted from the drum roll,
When the paper cutting knife is moved to the cutting position, the web located between the product roll and the drum roll can be cut. According to the invention of claim 3, since the web is adsorbed on the surface of the drum roll by the vacuum device, when the web is cut by the paper cutting knife, the web is not dragged, so that the web is reliably cut into a clean cut. Can be cut. According to the fourth aspect of the present invention, when the unloading arm is swung and the wound product roll is lifted from the drum roll, the web is held down by the paper holding roll and the paper cutting knife is advanced, whereby the paper cutting is performed. Since the guide pushes the web under the cutting edge of the paper cutting knife, the web located between the product roll and the drum roll can be cut. According to the invention of claim 5, when the paper cutting guide is at the retracted position, it does not become an obstacle, and when it is at the guide position, the cutting edge of the paper cutting knife approaching from the opposite side to the running direction of the web. Since the web is guided to be pushed downward, the web can be cut reliably. According to the invention of claim 6, when the paper cutting knife is at the standby position, it does not hinder the running of the web, and when cutting, it moves along the outer circumference of the drum roll, so that the web is reliably cut. it can.

[Brief description of the drawings]

FIG. 1 is a front view showing a web winding machine according to an embodiment of the present invention during a winding operation.

FIG. 2 is an enlarged front view of a first winding unit.

FIG. 3 is an enlarged front view of a second winding unit.

FIG. 4 is an enlarged front view of a paper holding roll and a paper cutting guide.

FIG. 5 is an explanatory view of a cutting operation of a first paper cutting knife.

FIG. 6 is an explanatory view of a cutting operation of a second paper cutting knife.

FIG. 7 is an explanatory diagram of a cutting position by a paper cutting knife.

FIG. 8 is an explanatory diagram of a paper cutting preparation step.

FIG. 9 is an explanatory diagram of a paper cutting step.

FIG. 10 is an explanatory diagram of an unloading step.

FIG. 11 is an explanatory view of a conventional single-drum type web winder.

FIG. 12 is an explanatory view of a conventional single-drum type web winder.

[Explanation of symbols]

 3 1st drum roll 4 1st unloading arm 5 1st paper cutting knife 6 2nd drum roll 7 2nd unloading arm 8 2nd paper cutting knife 11 Chain guide 15 Chain 21 Chain guide 25 Chain 30 Paper press roll 40 Paper Cutting guide

Claims (6)

[Claims] 1. A guide roll for guiding a web obtained by slitting a wide web to a narrow width with a slitter is provided, and a first winding section and a second winding section are provided on both sides of the guide roll. And a first take-up unit configured to swingably support a first drum roll provided on one side of the guide roll and a product roll to be wound in contact with the first drum roll. And a first paper cutting knife that cuts into the web by entering the web between the first drum roll and the product roll floating from the first drum roll, and the second winding unit includes: A second drum roll provided on the other side of the second guide roll, a second unloading arm for swingably supporting a product roll to be wound in contact with the second drum roll; The product floated from the second drum roll To rush to the web between the roll,
A cutting device for a web winding machine, comprising a second paper cutting knife for cutting the web. 2. A web winding machine for winding a web around a winding core by bringing an outer peripheral surface of a product roll to be wound into contact with a rotating drum roll, wherein the product roll is rotatably supported. A swingable unloading device that moves by drawing an arc-shaped locus between a winding position where the product roll is brought into contact with a drum roll and a unloading position where the product roll is placed on an unloading table. Arm, and is reciprocally movable between a cutting position where a web running along the outer circumference of the drum roll and running from the drum roll to the product roll is present, and a standby position away from the cutting position. When cutting, the outside of the web running in contact with the outer periphery of the drum roll, move in the same direction as the running direction of the web,
A cutting device for a web winder, comprising a paper cutting knife having a cutting blade at a front end. 3. A cutting device in a web winding machine according to claim 1, wherein said drum roll has a vacuum device for adsorbing a web running in contact with the surface of the drum roll. . 4. A web winding machine for winding a web on a winding core by bringing an outer peripheral surface of a product roll to be wound into contact with a rotating drum roll, and rotatably supporting the product roll. A swingable unloading device that moves by drawing an arc-shaped locus between a winding position where the product roll is brought into contact with a drum roll and a unloading position where the product roll is placed on an unloading table. Arm, and is reciprocally movable between a cutting position where a web running along the outer circumference of the drum roll and running from the drum roll to the product roll is present, and a standby position away from the cutting position. When cutting, the outside of the web running in contact with the outer periphery of the drum roll approaches the cutting position from the direction opposite to the running direction of the web, and a paper cutting knife having a cutting blade at the tip, and near the cutting position. And a paper holding roll moving between a holding position for holding the web running in contact with the outer periphery of the drum roll on the drum roll and a retreat position retracted therefrom, and the paper cutting knife approaching the cutting position. A paper cutting guide for pushing the web on the side in contact with the outer periphery of the drum roll below the cutting blade of the paper cutting knife. 5. The paper cutting guide is swingably attached to a bracket of the paper holding roll, and the paper cutting guide is retracted upward from the guide position along the web on the surface of the drum roll. The cutting device according to claim 4, wherein the position of the cutting device can be changed between the retracted position and the retracted position. 6. The paper cutting knife is attached to a chain wound around a chain guide along the outer periphery of the drum roll and a guide sprocket at a position distant from the drum roll. The cutting device according to claim 2, wherein the paper cutting knife is reciprocated between a cutting position and a standby position.