JPH03177251A - Web taking up device - Google Patents

Abstract

PURPOSE:To position the top edge of a web at the adhesive member position of a core even if the diameter of the core varies, as for the device for taking up the web such as paper and plastics, on a core. CONSTITUTION:Before a core 3 is transported between drum rolls 1 and 2, the installation position of an actuator 10 is shifted by a shifting device 11 according to the core diameter of the core information, or a cylinder for adjusting the position of a multistage cylinder 10 is operated. Accordingly, in the case of a core having a small diameter, the web cut position by a knife 8 is shifted in a descent direction, while in the case of the core having a large diameter, the position is shifted to a rising position. When taking up is completed, the knife 8 is raised to an upper limit position at a stroke end by the cut shift stroke of the actuator 10, and a web W is cut simultaneously with the pushing out of a taking-up roll.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a web winding device for winding a web of paper, plastic, or the like around a core.

<Prior art> A web winding device uses a slitter to divide the web unwound from the manufactured roll into predetermined width dimensions, and then, as shown in FIG. The tip is fixed to the core 3 on the drum rolls 1 and 2, and the drum roll 1 around which the web W is wound is rotated while being held down by the rider roll 4, and the web W is wound around the drum roll 1 on the pair of drum rolls 1 and 2. It is designed to be wound up to a predetermined diameter. Then, the rolled roll is pushed out to the unloading side by an extrusion device, and at the same time, the roll and the following web W are separated by a cutting device, and the adhesive material 5 such as double-sided tape is cut off for the next winding. The attached core 3 is carried between the drum rolls 1 and 2, and the core 3 is fixed to the cut end of the web W attracted to the drum roll I.

At the beginning of such winding, if the distance l between the tip of the separated web W and the adhesive material 5 on the core is long (see FIG. 12), then before the nip point between the core 3 and the rider roll 4,
If the web ends are bent (see FIG. 11) and the web is wound as is, wrinkles will occur near the core of the take-up roll, and the bottom roll of the roll will become waste paper.

As shown in FIG. 14, the web cutting device 6 inserts a cutting support 9 having a knife 8 at the tip from below between a pair of drum rolls 1 and 2, and cuts the axis of the drum roll 1 using a hydraulic cylinder (not shown). 01 is used as the turning center, and cutting is performed at the upper limit position at the stroke end of the hydraulic cylinder. Therefore, the cutting position cannot be changed, and in order to eliminate the bending of the web end, the drum roll 1 is slightly rotated in the opposite direction to the winding direction, as shown in FIG. must be moved close to the nip point (adhesive material position) between the drum roll 1 and the core 3.

<Problems to be Solved by the Invention> However, as shown in FIG. 13, the core 3 has a diameter ranging from a large diameter to a small diameter, and the web tip is located at each nip point N,
, Nz (in the vicinity of which the adhesive material 5 is pasted), it is difficult and time-consuming to control the drum roll 1 so that it is positioned near these points.

In addition, the front drum roll l is shown in Fig. 16,
As shown in Fig. 7, spiral grooves 1a are machined on the surface of the roll over the entire length of the roll, and suction holes 1b are bored in the spiral grooves 1a at intervals in the circumferential direction. The cut web W is the 14th
As shown in the figure, the web is held by suction, but this vacuum force alone has a weak web holding power, and the web W falls due to its own weight, and the web ends may not be able to be fixed to the core 3.

Furthermore, as shown in FIG. 14, since the gap between the arc-shaped guide support 9A of the cutting support 9 and the drum roll 1 is very narrow, when a sheet breakage occurs, the web W is guided as shown in FIG. It gets stuck at the tip of the support 9A, making removal difficult.

This invention was made to solve the above-mentioned problems, and its purpose is to be able to position the web tip at the adhesive material position of the core even if the diameter of the core changes, and to It is an object of the present invention to provide a web winding device that can prevent the web from sometimes falling and can eliminate clogging at the tip of a cutting support due to paper breakage.

<Means for Solving the Problem> As shown in FIG.
After inserting from below between the drum rolls 1.2 and separating the roll R wound up on this drum roll 1.2 and the following web W,
In a web winding device in which the core 3 to which the adhesive material 5 is attached is carried into the upper part between the drum rolls 1 and 2, a hydraulic cylinder or the like that rotates the cutting support 9 about the axis 01 of the drum roll 1 is used. The actuator 10 is movably supported by a moving device 11 so that the cutting position of the knife 8 can be adjusted in the cutting support rotation direction.

The moving device 11 can be omitted, and the actuator 10 can be a multi-stage cylinder such as a tandem cylinder, that is, a main cylinder for cutting movement and a plurality of cylinders for position adjustment added thereto.

Furthermore, as shown in FIG.
A presser roller 21 is provided to press the web W wound around the drum roll 1 against the drum roll 1.

Further, a guide sabot 1-9A disposed along the drum roll l of the cutting support 9 is movable toward and away from the circumferential surface of the drum roll 1.

<Function> Before moving the core 3 between the drum rolls 1 and 2, the mounting position of the actuator 10 is moved by the moving device 11, or the mounting position of the actuator 10 is moved according to the core diameter of the core information.
Activate the position adjustment cylinder to move the web cutting position by the knife 8 in the downward direction if the core is small,
If the core is large, move it in the upward direction.

When the winding is completed, the knife 8 is raised to the upper limit position at the end of the stroke by the cutting movement stroke of the actuator 10, and the web W is cut at the same time as the winding roll is pushed out.

As shown in FIG. 10, the cutting position of the web W changes depending on the core diameter, and when the core 3 is carried between the drum rolls 1. 5) and the web tip can be made almost equal and short regardless of the core diameter (I!, ζ22).

Thereby, even if the core diameter changes, the web tip can be positioned at the adhesive material 5 position of the core 3, and bending of the web end can be eliminated.

In addition, by using an adhesive material applying device 37 as shown in FIGS. 7 and 8 to apply the adhesive material 5 to the core 3, even if the core diameter changes, the area near the nip point of the core 3 can be maintained. The adhesive material 5 can be pasted at an appropriate position.

Further, the holding roller 21 supplements the holding of the web W by the suction force of the drum roll 1, presses the web W at the time of cutting the web and carrying in the core, and prevents the web W from falling.

By retracting the guide support 9A from the drum roll 1 during winding operation, it is possible to eliminate paper jams caused by paper breaks.

<Embodiment> As shown in FIG. 1, the web winding device includes a pair of drum rolls 1.2, a rider roll 4, a core chuck 6, a web cutting device 7, a winding roll extrusion device 23, a core It is composed of a carry-in device 26, an adhesive pasting device 37, and the like.

A pair of drum rolls 1 and 2 are arranged parallel to each other with a gap between them, and the front drum roll 1 is of the vacuum type having a spiral groove 1a and a suction hole 1b as in the prior art. A rider roll 4 that presses down the winding roll R during winding and a core chuck 6 that is attached to both ends of the core during winding are supported so as to be movable up and down.

A cutting device 7 for cutting the web W includes a knife 8, a cutting support 9, and a hydraulic cylinder 10 as an actuator. As shown in FIGS. 2 and 3, the cutting support 9 conventionally has an arcuate cross section along the surface of the drum roll 1 with a gap, and includes a guide support 9A having a length corresponding to the drum roll 1, and a base part. are rotatably attached to both ends of the drum roll 1, and the guide support 9A is attached to the axis 0. of the drum roll 1. The tip of the piston shaft of a hydraulic cylinder 10 placed below the drum roll 1 is pivoted to the tip of the rotation support 9B, and the hydraulic cylinder IO is expanded and contracted. , the pair of drum rolls 1 is moved from the state where the guide support 9A is retracted below the drum roll 1.
, and is configured to be inserted between the two. Moreover, at the upper limit position at the stroke end of the hydraulic cylinder 10,
A knife 8 attached to the tip of the guide sabot 9A is positioned above between the drum rolls 1 and 2, and is adapted to cut the web W displaced toward the unloading side by the take-up roll extrusion device 23. .

At such a cutting position 7, in the present invention, the hydraulic cylinder 10 disposed in the line direction is supported movably in the line direction by the moving device 1, and the upper limit cutting position of the knife 8 at the stroke end of the hydraulic cylinder 10 is set. Make it adjustable.

This moving device 11 has a system in which a slider 12, which is movable in the line direction by a guide member 13, is moved by an electric motor 14, and a hydraulic cylinder 10 is attached to the slider 12.
The cylinder base of the hydraulic cylinder 10 is pivoted, and the mounting position of the hydraulic cylinder 10 is variable. The electric motor 14 is connected to the slider 1 via a cyclo reducer 15, a worm jack 16, and a transmission rod 17.
2, so that the slider 12 can be driven by the rotation of the electric motor 14. If such a drive system is used, the upper limit cutting position of the knife 8 can be set without limit, but if position control at several points is sufficient, the moving device 11 can be eliminated and the hydraulic cylinder 10 replaced with a tandem type, telescopic type, etc. A multi-stage cylinder can be used.

In this case, a plurality of small strokes for position adjustment are added to the large movement stroke, and the cylinder for position adjustment is selectively operated according to the core diameter.

Furthermore, in the present invention, an intermediate support 9C is interposed between the guide support 9A and the rotation support 9B of the cutting support 9, and the base of the intermediate support 9C is pivotally attached to the tip of the rotation support 9B via the pin 18. At the same time, the rotation support 9B and the intermediate support 9C are connected by a hydraulic cylinder 19, and the guide support 9A attached to the intermediate support 9C can be swung back and forth with respect to the drum roll 1. As shown in FIG. 5, by operating the hydraulic cylinder 19 with the cutting support 9 retracted downward, the guide support 9A is separated from the surface of the drum roll l during winding operation, thereby preventing paper jams caused by paper breakage. to be able to resolve the issue. Note that the intermediate support 9C is provided with a stopper 20 that comes into contact with the rotating sabot 1-9B, so that it can be positioned when the guide support returns.

Furthermore, as shown in FIG. 3, the intermediate support 9C is provided with a presser roller 21 that can come into contact with the web W on the surface of the drum roll through the opening of the guide support 9A. The web W is held down together with the suction action of the web W to prevent the web W from falling. This presser roller 21 is swingably supported and urged by a spring 22 so as to be pressed against the drum roll 1 with a constant force.

As shown in FIG. 1, the take-up roll extrusion device 23 is disposed above the front side of the drum roll 1 so as to be able to rotate around the axis OI, and is rotated by a hydraulic cylinder 24 to the right in the figure. A pair of vertically rotating rollers 25
It is configured to push the take-up roll R toward the unloading side.

As shown in FIGS. 1 and 6, the core carrying device 26 has a core holding unit 27 disposed above the unloading side of the drum roll 2 so as to be able to rotate about the shaft center 02, and is rotated by a hydraulic cylinder 28. Rotate to the left of drum roll 1,
The core 3 is carried into the upper part of the space. The core holding unit 27 has bearings 29 at both ends of the drum roll 2.
The pivot lever 31 is provided at the tip of a pivot lever 31 whose base is pivoted via a pin 30, and the pivot lever 31 is connected via a link 33 to the unloading side of a rotary lever 32 rotatably provided at both ends of the drum roll 2. The rotation lever 32 is rotated by a hydraulic cylinder 28 disposed below the drum roll 2, so that the drum roll 2 is pivoted about the pin 30.

The core clamping unit 27 has a clamping piece 34 having approximately the same length as a drum roll that clamps the core 3 from both sides, and the pair of clamping pieces 34 are opened and closed synchronously by a cylinder 35 via a lever and a link. It is possible to fix cores 3 of large diameter and small diameter. The core 3 is inserted onto the pedestal 36 of the core clamping unit 270 in a standby state, and after being fixed by the clamping piece 34, the core 3 is inserted into the base 36 of the core clamping unit 270 in a standby state, and then fixed by the clamping piece 34.
An adhesive material 5 such as double-sided tape is pasted diagonally above the unloading side. The core 3 to which the adhesive material 5 is attached is fixed by the clamping piece 34 and rotated by the turning lever 31 or the like, and by opening the clamping piece 34 above the space between the drum rolls 1 and 2, the core 3 is moved to the upper part between the drum rolls 1 and 2. It is carried in by falling. The core 3 is rotated approximately 180 degrees, and the adhesive material 5 can be located at the tip of the web W wrapped around the drum roll 1 side.

7 and 8 are examples of an adhesive pasting device 37 using double-sided tape, in which the core 3 is removed by running the adhesive pasting unit 38 along the core holding unit 27. The double-sided tape 5 can be applied continuously in the longitudinal direction diagonally upward on the side. The double-sided tape 5 and the backing paper 5'' are stored in a roughly wound tape cassette 39, and the double-sided tape 5 is pressed onto the surface of the core 3 by a pressing roller 40, and the backing paper 5'' is pasted through the guide roller 41 and the tape cassette 39. The paper is wound up onto a mount cassette 42.

Support bracket 4 to which cassettes 39, 42, etc. are attached
3 has pins 44 at both ends and is attached to a traveling frame 46 so as to be able to rise and fall in the traveling direction via a pair of lifting arms 45, and one lifting arm 45 and the traveling frame 46 are connected by a tension coil spring 4.
7 and an air cylinder 48, and the air cylinder 48
The support bracket 43 is raised and lowered by the tension coil spring 47 to follow the large diameter and small diameter cores 3, so that the pressing roller 40 can be pressed against the surface of the core 3. The traveling frame 46 is made to be able to travel by a traveling guide member 49 disposed along the side of the core loading device 26 on the unloading side, and is towed by a chain, a sprocket, and an electric motor (not shown). .

The support bracket 43, ie, the cassette 39°42, etc.
So that the double-sided tape 5 can be pasted diagonally above the core 3,
Tilt it at an angle θ1 toward the unloading side, and then attach the support bracket 4.
By tilting the lifting arm 45 at an angle θ2 with respect to the core 3, the double-sided tape 5 is attached to the large diameter core 3 and the small diameter core 3 at approximately the same center angle position.

As a result, when the core 3 is carried between the drum rolls 1 and 2, the double-sided tape 5 can be positioned at an appropriate position near the nip point between the core 3 and the drum roll 1, regardless of whether it has a large diameter or a small diameter. . Note that the adhesive material 5 is not limited to double-sided tape, and adhesives such as "glue" may also be used.

In the above configuration, it operates as follows (9th
(see figure).

(1) During winding, the core 3 is inserted into the carry-in device 26 and the adhesive material 5 is pasted.

(ii) When winding is completed, roll change is started. Raise rider roll 4, nip guard 50,
The core chuck 6 is removed from the core 3 and raised. Further, the guide support 9A of the cutting support 9 in the lowered position is attached to the drum roll l, and suction of the drum roll l is started.

(it) Move the hydraulic cylinder 10 according to the core diameter and install it 1
1, and after raising the cutting support 9 to the upper limit position, the take-up roll R is pushed out to the unloading side by the take-up roll push-out mounting 23, and the web W is cut by the knife 8. The cut web W is attracted to the drum roll l and is held down by the presser roll 21, so that it does not slip off.

(iv) Return the take-up roll extrusion device 23 and lower the cutting support 9 to the intermediate position. moreover,
Raise the swing table 51.

(v) The core loading device W26 is rotated and the core 3 is loaded between the drum rolls 1.2 and above. The core 3 is fixed to the web tip by an adhesive material 5.

(vi) Return the core loading device W26 and lower the swing table 51. In addition, cutting support 9
is lowered to the lower limit, and the guide support 9A is separated from the drum roll 1. The core chuck 6 is lowered and attached to both ends of the core 3.

(vi) Lower the nip guard 50 and rider roll 4, and turn off the suction of the drum roll 1. This completes the roll change and starts winding.

<Effects of the Invention> As described above, the present invention provides an actuator that rotates a cutting support having a knife at its tip around the axis of a drum roll by a moving device or a multi-stage cylinder. The cutting position can be adjusted, so even if the core diameter changes, the core adhesive material can always be easily positioned near the web tip, eliminating bending of the web edge at the start of winding. can do. As a result, it is possible to eliminate wasted paper in the lower roll near the core of the winding roll, and even if the core diameter changes, cutting can be performed easily and quickly, so that the unloading time can be shortened.

Further, the holding roller can prevent the web from falling during web cutting, and the end of the web can be reliably positioned. Furthermore, the guide support that moves back and forth toward the circumferential surface of the drum roll can eliminate clogging at the tip of the cutting support due to paper breakage.

[Brief explanation of drawings]

1 is a front view showing a web winding device according to the present invention, FIG. 2 is a front view showing a web cutting device thereof, FIG. 3 is a partially enlarged view of FIG. 2, and FIG. Enlarged view of part of the figure,
Fig. 5 is a schematic diagram showing the cutting support during operation of the present invention, Fig. 6 is a front view showing the core loading device, Fig. 7,
FIG. 8 is a front view and side view showing the adhesive pasting device, FIG. 9 is a schematic diagram showing the operating status of the web winding device in order, and FIG.
The figure is a schematic diagram showing the effect of the present invention, Figure 11 is a schematic diagram showing the conventional bending of the web end, Figure 12 is a schematic diagram showing the conventional method for preventing bending, and Figure 13 is a schematic diagram showing the bending of the web end. FIG. 14 is a schematic diagram showing a conventional cutting support. FIG. 15 is a schematic diagram showing a conventional paper jam. FIG. 16 is a schematic perspective view showing the front drum roll. The figure is a sectional view thereof. 1.2...Drum roll, 3...Core 4...Rider roll, 5...Adhesive material 6...Core chuck,
7... Cutting device 8... Knife, 9... Cutting support 9A... Guide support, 9B... Rotation support 9C... Intermediate support 10... Actuator (hydraulic cylinder) 11...
Moving device, 12...Slider 13...Guide member, 14...Electric motor 15...Cyclo speed reducer 16...Worm jack, 17...Transmission rod 1
8... Bin, 19... Hydraulic cylinder 20... Stopper 21... Presser roller 2
2... Spring 23... Take-up roll extrusion device 24... Hydraulic cylinder, 25... Roller 26
... Core carrying device 27 ... Core clamping unit, 28 ... Hydraulic cylinder 31 ... Swivel lever 32 ... Rotation lever 3
3... Link, 34... Clamping piece 37.
... Adhesive material pasting device 38 ... Adhesive material pasting unit 39 ... Roughly wound tape cassette 42 ... Mounting paper cassette Fig. 7 Fig. 5 Fig. 10 Fig. 1 Fig. 2 Fig. O Fig. 4

Claims (4)

[Claims] (1) A cutting support with a knife at the tip is inserted from below between a pair of drum rolls, the roll wound on this drum roll and the following web are separated, and then the core with adhesive material is removed. In the web winding device carried into the upper part between the drum rolls, an actuator for rotating the cutting support around the axis of the drum roll as a rotation center;
A web winding device characterized in that the knife is movably supported by a moving device so that the cutting position of the knife can be adjusted in a cutting support rotation direction. (2) Insert a cutting support with a knife at the tip from below between a pair of drum rolls, cut off the roll wound on this drum roll and the following web, and then remove the core with the adhesive applied. In the web winding device carried into the upper part between the drum rolls, an actuator for rotating the cutting support around the axis of the drum roll as a rotation center;
A web winding device characterized by having a multistage cylinder. (3) Claim (1) or (2) characterized in that the cutting support is provided with a pressing roller capable of pressing the web wound around the drum roll against the drum roll.
). (4) Claims (1) and (2) characterized in that the guide support disposed along the drum roll of the cutting support can move forward and backward toward the circumferential surface of the drum roll.
Or the web winding device according to (3).