JPH05170362A - Web take-up device - Google Patents

Abstract

PURPOSE:To provide a web take-up device capable of minimizing influence of an adhesive so as to continuously take up a web with less wrinkle from the start to the end even if the web has little elongation (for example, copy paper or wall paper). CONSTITUTION:An adhesion means to apply an adhesive on a travelling web 1 in a direction orthogonal with the travelling direction of the web 1 consists of an adhesive transfer roller 40 free to rotate and arranged so as to sandwich the web 1 between itself and a first take-up drum 10 at a position in the neighbourhood of a groove 11 formed on the surface of the first take-up drum 10, a transfer means to transfer the adhesive transfer roller 40 in the shaft direction and a plural number of adhesive injection devices 60 arranged with proper intervals alon the longitudinal direction of the adhesive transfer roller 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a web winding device. More specifically, the present invention relates to a web winding device used for rewinding paper from a relatively large parent roll paper and rewinding it into a plurality of relatively small consumer rolls. Note that typical consumer rolls include crepe-containing paper (paper with high elongation) such as commercially available toilet paper, tissue paper, towel paper, and crepe-free paper such as copy paper and wallpaper. There is less paper) roll winding etc.

[0002]

2. Description of the Related Art In a conventional web winding device, the adhesion of the leading end of the web to the winding core and the fixing of the tail of the web to the winding roll are performed by the following methods. That is,
In the case of adhering the tip of the web to the core, the adhesive was applied to the surface of the core in a ring shape, and the tip of the web was attached to the core at the start of winding the roll. In addition, when the tail edge of the web cut along with the winding of the roll is fixed to the winding roll, the adhesive is applied directly to the web along the running direction of the web, and the tail edge of the web is rolled up. It was stuck on the roll and stuck.

[0003]

However, in the adhesive applying method in the conventional web winding device, the adhesive is applied to the surface of the winding core in a ring shape or along the running direction of the web. However, there is a problem in that the adhesive application area becomes unnecessarily large and the amount of adhesive used increases. In addition, there are cases where the adhesion is not sufficient despite the large amount of adhesive used. In particular, when the adhesive is applied directly to the web along the running direction of the web, the adhesive may not be applied over the entire width of the web. It is not enough, and there is a problem that the surface of the winding roll is not beautifully finished and the commercial value is reduced. Further, when applying the adhesive in a ring shape on the surface of the winding core, or when applying the adhesive directly to the web along the running direction of the web,
Since more adhesive is applied than is necessary, the quality of the web in which the adhesive is applied may be altered, and wrinkles may be formed, which reduces the amount of paper that can be used. For this reason,
The conventional bonding method is not economical for high value-added products such as copy paper and wallpaper that must be used as much as possible by one winding roll.

In view of the above situation, the present invention reduces the amount of adhesive used and reduces the elongation of a web (for example, copy paper) when winding a web that continuously runs at a relatively high speed. To provide a web winding device formed with an adhesive means capable of minimizing the influence of the adhesive so that the film can be continuously wound up from the beginning to the end without wrinkles even if it is a wallpaper or wallpaper). With the goal.

[0005]

SUMMARY OF THE INVENTION A web winding device of the present invention comprises a first winding drum, a second winding drum and a web separating roll which rotate in synchronization with each other, the first winding drum and the second winding drum. A web winding device comprising: a winding core inserting means for inserting a winding core between the winding drum and a winding drum; and a diameter control roll for winding a web together with the first winding drum and the second winding drum. Adhesive means for applying an adhesive to the running web in a direction perpendicular to the running direction of the web is provided at a position near the groove formed on the surface of the first take-up drum with the first take-up drum. A rotatable adhesive transfer roll arranged so as to sandwich the web between them, a moving means for moving the adhesive transfer roll in the axial direction, and an appropriate interval along the longitudinal direction of the adhesive transfer roll. Are arranged, Characterized in that comprising a plurality of adhesive ejecting apparatus for ejecting a surface of the adhesive transfer roll Chakuzai.

[0006]

In the web winding device of the present invention, since the adhesive transfer roll moves in the axial direction with respect to the adhesive injection device for injecting the adhesive, the surface of the adhesive transfer roll extends along the longitudinal direction thereof. Adhesive can be applied. The adhesive applied to the surface of the adhesive transfer roll is transferred to the web running on the first take-up drum by the rotation of the adhesive transfer roll, so that the entire width of the web perpendicular to the running direction of the web is transferred. The adhesive can be applied. Therefore, it is possible to reduce unnecessary adhesive as compared with the conventional bonding method, and since only the minimum necessary adhesive is applied to the web tip and the web tail after the web separation, It is economical because it can be used continuously from the beginning to the end of the winding roll without wrinkles. Further, since the tail edge of the web can be completely adhered to the take-up roll over the entire width direction, the tail edge of the take-up roll does not cause adhesion failure and handling is easy even if the roll is wide.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a web winding device which is an embodiment of the present invention. This web winding device roughly includes a first winding drum 10, a second winding drum 20, a web separating roll 30, an adhesive transfer roll 40, an adhesive injection device 60, a core inserting means 70, and a diameter control. It is composed of a roll 80 and a control means 90.

The surface of the first winding drum 10 is shown in FIG.
As shown in the enlarged view of FIG. 1, a groove 11 is formed along the longitudinal direction of the first winding drum 10, and inside the groove 11, the tail edge of the cut web 1 is held on the surface of the first winding drum 10. A hook 12 for forming the groove is formed (details of the groove 11 and the hook 12 are disclosed in Japanese Patent Application No. 3-305311). The tail edge is held by any means such as a method of holding the tail edge of the web 1 cut by the suction holes formed on the surface of the first winding drum 10 on the surface of the first winding drum 10. be able to. In addition, the first winding drum 10
A suction hole 13 for holding the front end of the cut web 1 on the surface of the first winding drum 10 is formed on the surface of the rear side of the groove 11 in the rotation direction of the first winding drum 10. The suction hole 13 communicates with a vacuum box 14. The second winding drum 20 shown in FIG. 1 rotates in synchronization with the first winding drum 10 and is a drum for winding the web 1 together with the first winding drum 10.

As shown in FIG. 4, a web separator 31 having a rigid member is attached to the surface of the web separator roll 30 along the normal line direction of the web separator roll 30. Elastic bodies 32 are attached to both sides to prevent the web 1 from being displaced. Note that this elastic body 32 is a material with good peeling property in order to avoid adhesion with an adhesive described later,
For example, it is formed of silicon rubber or the like. The web separating roll 30 is rotatably supported by the arm 33,
A gear train (not shown) is connected so as to rotate in synchronization with the first winding drum 10. A cylinder 35 is connected between the web separating roll 30 and a frame (not shown) by pins 34 and 36. The cylinder 35 causes the web separating roll 30 to move to the first winding drum.
It is configured so that it can be pressed to the 10 side.

While the web separating roll 30 is rotating in synchronization with the first winding drum 10, when the tip of the web separator 31 coincides with the groove 11, the tip of the web separator 31 is grooved. When pushed into 11, the web 1 is torn and the web 1 is separated into two parts. As a means for separating the web 1 into two parts, a cutter knife is formed on the web separator 31 and the first winding drum 10 rotates in the groove 11 formed on the surface of the first winding drum 10. The web separator 31 forms the anvil knife on the side surface in the direction of the first winding drum 10.
A method of shear-cutting the web 1 by bringing the cutter knife and the anvil knife into contact with each other when entering the groove 11 formed on the surface of the web Any means such as a cutting device ") can be employed.

The adhesive transfer roll 40 is formed so that the adhesive is applied over the longitudinal direction of the surface of the adhesive transfer roll 40. That is, as shown in FIG. 2B, a convex protrusion is formed in the longitudinal direction of a cylindrical roll, and an elastic body 41 having good releasability is fixed to the surface of the convex protrusion. The adhesive transfer roll 40 has bearings 42, 49 fixed to frames 5 and 6 installed at right angles to the axial direction of the adhesive transfer roll 40 as shown in FIG.
And ball bearings 45, 48 supported by the bearings 42, 49. A bearing 44 is fitted inside the ball bearing 45, and a spline shaft 43 is formed between the bearing 44 and one shaft 40a of the adhesive transfer roll 40. A bearing 47 is also fitted inside the ball bearing 48, and a spline shaft 46 is formed between the bearing 47 and one shaft 40b of the adhesive transfer roll 40. As the spline shafts 43 and 46, for example, ball splines are used, and the rotation is transmitted but the axial sliding is possible.

On the other hand, a drive unit 110 is connected to the shaft end of the bearing 47 via a connecting shaft 55. A ball bearing 53 is installed at the shaft end of one shaft 40a of the adhesive transfer roll 40, and the ball bearing 53 is supported by a thrust receiver 52. The thrust receiver 52 does not rotate even when the adhesive transfer roll 40 rotates, and the thrust receiver 52 is connected to the cylinder 50 supported by the support body 51 fixed to the frame 6. Therefore, by expanding and contracting the cylinder 50, the adhesive transfer roll 40 can be moved in the axial direction. The cylinder 50 constitutes the moving means referred to in the claims.

A plurality of the adhesive injection devices 60 are supported by an adhesive injection device support 61, and a plurality of the adhesive injection devices 60 are arranged at appropriate intervals along the longitudinal direction of the surface of the adhesive transfer roll 40. Therefore, when the adhesive transfer roll 40 moves in the axial direction of the adhesive transfer roll 40, the adhesive transfer roll 40
The adhesive 7 can be continuously or intermittently applied to the surface of the. The adhesive injection device 60 is provided with one or two nozzles (a nozzle in this specification includes a spray; the same applies hereinafter), and an adhesive injection device 60 with one nozzle is used. Then, as shown in FIG. 5, the adhesive is applied in one row (7), and in the adhesive injection device 60 having two nozzles, the adhesive is provided in two rows (7, 8) as shown in FIG.
Can be applied to. In addition, the individual adhesive injection device 60
Alternatively, two or more nozzles may be provided in one row or two rows. The term "one by one" as used in the claims is a concept including one row of two or more nozzles. Further, the term "two nozzles each" is a concept including a nozzle group having several nozzles arranged in two rows. Further, even in an apparatus in which the nozzles are provided in one row, the adhesive is applied in one row (7) and then the adhesive transfer roll is applied.
By rotating 40 for a certain amount and applying another row (8), two rows of adhesives 7 and 8 can be obtained.

The core inserting means 70 is a device for inserting a core 74 between the first winding drum 10 and the second winding drum 20, and includes a core inserting mechanism 71 and an arm 72. And the insertion roller 73 is attached to the tip of the arm 72. Further, a cam follower 104 shown in FIG. 3 is fixed to the core inserting mechanism 71, and the inserting operation is controlled by directly receiving the movement of the cam 94 as described later.

The diameter control roll 80 winds the web 1 together with the first winding drum 10 and the second winding drum 20 and holds the winding roll until the desired winding size is reached. Is a roll. The operation of the diameter control roll 80 is performed by a servo motor (not shown) that rotates until the encoder signal indicating the actual number of revolutions matches the set winding length signal, and one log is wound by the servo motor. It is controlled by a cam that is rotated.

The control means 90 includes a second winding drum 20,
This is a device for controlling the operations of the web separating roll 30, the adhesive transfer roll 40, the core inserting means 70, and the log brake 21. As shown in FIG. 3, the control means 90 includes a shaft 91 and a cam 92.
˜96, adhesive transfer roll drive gears 107 ˜ 109, and drive devices 110, 111. Drive device 111
Is a motor (or mechanical transmission mechanism) for rotating the shaft 91 connected to the drive unit 111 by the number of rotations determined in relation to the first winding drum 10. In the present embodiment, the shaft 91 is set to rotate once every eight rotations of the first winding drum 10, but this ratio can be set freely. The shaft 91 has cams 92 and 95 for controlling the web separating roll 30, a cam 93 for controlling the second winding drum 20, a cam 94 for controlling the core inserting means 70, and a log brake 21. The cam 96 for controlling the motor is fixed, and each cam is set so that each device operates at each timing. The shaft 91 is supported by the frames 5 and 6, drive gears 107, 109 and 108 are connected to the shaft 91 in that order, and the drive gear 108 is connected to a drive unit 110. The driving device 110 is a mechanism for driving the adhesive transfer roll 40 at a speed adapted to the first winding drum 10. Although the control means by a mechanical method is shown here, a control means by an electric method such as a motor is also possible.

The core 75 is adapted to be conveyed upward from the core aligning station 76 by a conveying device 77.
Then, the leading winding core 74 stands by below the first winding drum 10 and is inserted from here between the first winding drum 10 and the second winding drum 20 by the winding core inserting roller 73. .. In the apparatus of the present invention, it is optional to dispose the porous forming device or the slitter device between the guide rolls 3 and 4.

Next, the operation of the web winding device of this embodiment will be described. First, the operation of adhering the leading end of the web 1 to the winding core will be described with reference to FIGS.

First, when the web 1 controlled by the rewinding device (not shown) is controlled to have a proper tension, the web 1 is guided by the guide rolls 2, 2 as shown in FIG. It passes through 3 and 4 and advances to the adhesive application section on the first winding drum 10. As shown in FIG. 5, the adhesive injection device 60 applies one line of the adhesive 7 supplied from the adhesive supply device (not shown) to the elastic body 41 on the surface of the adhesive transfer roll 40 by the nozzle 62. At this time, the adhesive transfer roll
40 is a cylinder 50 (see FIG. 2) and the adhesive transfer roll
Adhesive transfer roll by moving in 40 axial direction
The adhesive 7 is attached to the surface of the elastic body 41 of 40 along the longitudinal direction thereof.
Is applied. When the number of the adhesive injection devices 60 installed is small, the adhesive 7 is applied to the entire surface of the elastic body 41 on the surface of the adhesive transfer roll 40 in the longitudinal direction by increasing the axial movement amount of the adhesive transfer roll 40. If the number of installations is large, the amount of movement of the adhesive transfer roll 40 in the axial direction can be small. Further, by adjusting the axial moving speed of the adhesive transfer roll 40 and the supply pressure when the adhesive is supplied from the adhesive supply device to the adhesive injection device 60, the adhesive 7
The coating amount of can be freely adjusted.

Next, when the adhesive transfer roll 40 is preset from the state shown in FIG.
(See FIG. 3), the position near the groove 11 formed on the first winding drum 10 as shown in FIG.
The web 1 is sandwiched between the first take-up drum 10 and the adhesive transfer roll 40 at a position rearward of the first take-up drum 10 in the rotational direction of the first take-up drum 10. At this time, the adhesive 7 applied to the elastic body 41 on the surface of the adhesive transfer roll 40 is adhered to both the elastic body 41 on the surface of the adhesive transfer roll 40 and the web 1. Since the elastic body 41 on the surface of the adhesive transfer roll 40 is formed of an elastic body having a good peeling property, the adhesive transfer roll 40 and the first winding drum 10 rotate and the adhesive transfer roll 40 becomes When leaving the first winding drum 10, the adhesive 7 is entirely transferred onto the web 1 without remaining on the elastic body 41 on the surface of the adhesive transfer roll 40. At this time, the web 1 is held on the surface of the first winding drum 10 by the suction holes 13 formed in the surface of the first winding drum 10 and the vacuum box 14.

When the web being wound becomes a take-up roll having a predetermined thickness, the cam 92 attached to the shaft 91 shown in FIG. 3 rotates and the roller 97 and the arm 102 are moved to move the web separating roll. At the same time as 30 starts rotating, as shown in FIG.
Is extruded toward the first winding drum 10.
At this time, the adhesive 7 transferred onto the web 1 is
It is in a state of being arranged on the rear side in the rotation direction of the first winding drum 10 in the vicinity of. Then, when the tip of the web separator 31 attached to the web separating roll 30 is aligned with the groove 11, the web separating roll 30 is further pushed toward the first winding drum 10 and the tip of the web separator 31 is When it is pushed into the groove 11, the web 1 is torn and the web 1
Separated into two. Then, the web tail edge 1a of the separated web 1 is held by the hook formed inside the groove 11, and the web tip end portion 1b has the suction hole formed on the surface of the first winding drum 10 as described above. It is in a state of being sucked by 13 and held on the surface of the first winding drum 10.

Then, as shown in FIG.
When b comes between the first take-up drum 10 and the second take-up drum 20, the core 74 is moved to the space between the first take-up drum 10 and the second take-up drum 20 by the core inserting means 70. Can be lifted. The winding core 74 and the front end portion 1b of the web coated with the adhesive 7 are the first winding drum 10 and the second winding drum.
The web front end 1b is bonded to the winding core 74 by being pressed by the 20 and the insertion roller 73.

As described above, the leading end portion 1b of the web is the core.
When it is bonded to 74, the rotation speed of the second winding drum 20 is reduced, and the winding core 74 is moved forward (right side in the figure) due to the speed difference between the first winding drum 10 and the second winding drum 20, At a position above the second winding drum 20, winding of a new winding roll starts. On the other hand, in the winding roll 9, as the log brake 21 provided on the upper rod of the second winding drum 20 moves up at the same time as the winding is completed, the winding roll 9 comes into contact with the second winding drum 20. , And the winding roll 9 is discharged to the stopper 81 (see FIG. 1). Winding roll 9
A new core is inserted by the core inserting roller 73 at the same time as the discharging of the, and the winding of the next web is started.

Next, the bonding operation when the two rows of adhesives 7 and 8 are applied will be described with reference to FIGS. As described above, the adhesive injection device 60 shown in FIG. 9 has two nozzles 62 and 63.
Therefore, two rows of the adhesives 7 and 8 can be applied to the surface of the adhesive transfer roll 40. In this case, one adhesive 7 is used for fixing the tail edge of the web to the winding roll, and the other adhesive 8 is used for adhering the leading end of the web to the winding core 74. That is, when the adhesives 7 and 8 are transferred onto the web 1 in the same manner as in FIGS. 6 to 8 and the web 1 is arranged on both sides of the groove 11, when the tip end of the web separator 31 is pushed into the groove 11, The web 1 is torn and the web 1 is separated into two parts. At this time, the adhesive 7 is applied to the web tail 1a and the adhesive 8 is applied to the web tip 1b as shown in FIG. become. The tail edge 1a of the web is fixed to the winding roll by the adhesive 7, and the tip end portion 1b of the web is adhered to the winding core 74 by the adhesive 8. Therefore, in this case, not only the front end portion 1b of the web is bonded to the winding core 74, but also the tail edge 1a of the winding roll can be fixed to the roll body.

As described above, in the web winding device of this embodiment, the adhesives 7 and 8 can be applied over the entire width of the web in the direction perpendicular to the traveling direction of the web 1, and unnecessary adhesive can be reduced. Moreover, the discoloration and wrinkles of the web 1 are reduced, and the winding roll can be used from the beginning to the end, which is economical. Further, since the tail edge of the web 1a can be completely adhered to the take-up roll in the entire width direction, both ends of the tail edge of the take-up roll do not have poor adhesion and are easy to handle even with a wide roll. ..

[0026]

According to the present invention, since it is possible to apply only the minimum necessary amount of adhesive, the amount of adhesive used can be reduced, and wrinkles can be continuously applied from the beginning to the end of the winding roll. It is economical because it can be wound up and used. Further, since the tail edge of the web can be fixedly adhered to the take-up roll completely in the width direction, both ends of the tail edge of the take-up roll do not have poor adhesion, and handling is easy even with a wide roll.

[Brief description of drawings]

FIG. 1 is a side view schematically showing a web winding device according to an embodiment of the present invention.

FIG. 2A is a plan view around an adhesive transfer roll, and FIG. 2B is a sectional view of an adhesive transfer roll main body.

FIG. 3 is a plan view showing an outline of a control device used in the web winding device of the present invention.

4 is an enlarged view of a main part of the web winding device shown in FIG. 1. FIG.

FIG. 5 is an explanatory diagram showing a state in which an adhesive is applied to the adhesive transfer roll in one row.

FIG. 6 is an explanatory diagram of a state in which an adhesive is transferred from an adhesive transfer roll to a web.

FIG. 7 is an explanatory diagram showing a state in which a web to which an adhesive is transfer-coated is cut by a web separator.

FIG. 8 is an explanatory diagram of a winding state of a web on which an adhesive is applied in one row.

FIG. 9 is an explanatory diagram of a state in which two rows of adhesives are applied to the adhesive transfer roll.

FIG. 10 is an explanatory diagram of a wound state of a web to which two rows of adhesives have been applied.

[Explanation of symbols]

1 web 1a web tail 1b web tip 7 adhesive 8 adhesive 10 first take-up drum 11 groove 20 second take-up drum 30 web separation roll 31 web separator 40 adhesive transfer roll 50 cylinder 60 adhesive injection device 62 Nozzle 63 Nozzle 70 Core insertion means 74 Core 80 Diameter control roll

Claims (3)

[Claims] 1. A first winding drum and a second winding drum which rotate in synchronization with each other.
A winding drum and a web separating roll, a core inserting means for inserting a winding core between the first winding drum and the second winding drum, the first winding drum and the second winding drum.
A web winding device including a winding drum and a diameter control roll that winds a web, wherein an adhering means for applying an adhesive to a running web in a direction perpendicular to the running direction of the web comprises: A rotatable adhesive transfer roll disposed so as to sandwich the web with the first winding drum at a position near a groove formed on the surface of the winding drum, and the adhesive transfer roll is axially arranged. It comprises a moving means for moving and a plurality of adhesive ejecting devices which are arranged at appropriate intervals along the longitudinal direction of the adhesive transfer roll and eject the adhesive onto the surface of the adhesive transfer roll. A web winding device characterized by the above. 2. A plurality of nozzles for injecting an adhesive are provided to each of the plurality of adhesive injecting devices, the adhesive is applied in a row on the surface of an adhesive transfer roll, and the web is formed by the adhesive. 2. The web winding device according to claim 1, wherein the tip portion is adhered to the winding core. 3. A plurality of nozzles for injecting an adhesive are provided to each of the plurality of adhesive injecting devices, and the adhesive is applied to the surface of the adhesive transfer roll in two rows, and the web is formed by the adhesive. 2. The adhesion of the leading end portion to the winding core and the fixing of the web tail edge to the winding roll are performed.
The described web winding device.