JPH0815966B2 - Web winding device - Google Patents

Description

Detailed Description of the Invention

[0001]

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 such as toilet paper, tissue paper, and towel paper that are sold on the market (paper with high elongation), and crepe-free paper such as copy paper and wallpaper. there is such a small paper) roll paper.

[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 fixation of the tail of the web to the winding roll are performed by the following device . That is,
Japanese Patent Application Laid-Open No. 48-10462 discloses a conventional glue applying device.
Report (conventional example I), Japanese Patent Laid-Open No. 61-2645 (conventional example)
II), JP-A-2-291344 (Prior art example II
There is I). In the conventional example I, as shown in FIG.
To the belt 127 with glue that is wrapped around the roll 128 of the book
Apply the glue in the glue box 126 and place it on the glued belt 127.
Pass the core 74 while rolling it, and glue it on the surface of the core 74.
Is to be attached. The conventional example II is shown in FIG.
As shown in (A), the fixed sizing device 103 and the winding
A web lifting device 151 built in the take-up roll 111,
And is running with the rotation of the winding roll 111.
The web 1 is partially lifted and its lifting device 151
Glue is sprayed from the gluing device 103 onto the web 1 traveling above.
To shoot. Conventional Example III is as shown in FIG.
And glue roller 109A soaked in glue box 109B,
The core 74 is passed between the guide rolls 109C facing each other.
And rotate the winding core 74 while applying glue to the surface.
It is something to wear.

[0003]

However, the above-mentioned conventional example
For the I and III gluing operations, glue is applied to the rolling core 74.
This is the attaching operation, and the
It cannot be glued with a certain width, and it is inevitable
If you don't glue much of the circumference of the
When wrapping around the core, the starting point of the web and the glued position are misaligned.
Can not be bonded, and the end of the web is glued
It may happen that they are misaligned and cannot be bonded. Therefore, usually
To avoid adhesive failure by taking a large amount of glue application area
However, in this case, the amount of adhesive used is more than necessary.
The problem is that there is too much glue, and more glue is needed than necessary.
The adhesion may cause the web to deteriorate or wrinkle.
Therefore, the amount of paper that can be used after it becomes a product is small.
Disappear. For this reason, unroll the paper from the roll before use.
In the winding roll type, the last paper near the core remains
Copy paper or wallpaper that you want to use as much as possible without
For the high value-added products of
Clearly not economical. In addition, the conventional example II
Is glue glued to the web running at high speed.
Since the glue is sprayed with the attachment device, the space between the glue and the web
The relative speed difference is large, and the glue sprayed on the web runs on the web.
Ragged on the opposite side of the line. So-called string pull 10
0 (see FIG. 12B) is generated. This string 1
Since 00 is unnecessary glue, it is natural that the
As described above, it causes color and wrinkles,
It increases the cost and reduces the economic efficiency.

In view of the above-mentioned circumstances, the present invention adheres an adhesive with a narrow and uniform width so as not to cause stringing when winding a web that runs continuously at a relatively high speed on a winding core.
And, along with reducing the amount of that, less elongation web (e.g., copy such as paper or wallpaper) the effect of the adhesive so it can be wound continuously from the first no wrinkles even to the end An object of the present invention is to provide a web winding device formed with an adhesive means that can be minimized.

[0005]

SUMMARY OF THE INVENTION A web winding device according to the present invention comprises a first winding drum, a second winding drum and a web separating roll that 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 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. It is arranged so that the web is sandwiched between them, it is rotatable, and its peripheral speed is
An adhesive transfer roll having the same traveling speed as the web, moving means for moving the adhesive transfer roll in the axial direction, and arranged at an appropriate interval along the longitudinal direction of the adhesive transfer roll, A web winding device comprising: a plurality of adhesive ejecting devices for ejecting an adhesive onto the surface of an adhesive transfer roll.

[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 spraying device for spraying the adhesive, the adhesive transfer roll moves along the longitudinal direction of the surface of the adhesive transfer roll. Adhesive can be applied. The adhesive applied to the surface of the adhesive transfer roll is transferred to the web running on the first winding drum by the rotation of the adhesive transfer roll . At this time, the peripheral speed of the transfer roll and the running of the web are transferred.
Because the line speed is consistent across the web full width of the traveling direction perpendicular to the direction of the web, and a narrow uniform width, thread draw
The adhesive can be applied without causing scratches . Therefore, it is possible to reduce unnecessary adhesive compared to 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. Also,
Since the fixing of the web tail edge to the take-up roll can be completely adhered in the entire width direction, the tail edge of the take-up roll does not cause poor adhesion, and handling is easy even with a wide roll.

[0007]

Embodiments of the present invention will now be described 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 on the rear side 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 direction of the web separator roll 30. Elastic members 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, a cutter knife is formed on the web separator 31 and the first winding drum 10 is rotated in the groove 11 formed on the surface of the first winding drum 10. An anvil knife is formed on the side surface in the direction, and the web separator 31 is installed on the first winding drum 10.
A method for shear-cutting the web 1 by bringing the cutter knife and the anvil knife into contact with each other when the web 1 is rushed into the groove 11 formed on the surface of the web (Patent application “Web in a web winding device”, Dec. 14, 1991). 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 and 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 and 48 supported by the bearings 42 and 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 on 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 if the adhesive transfer roll 40 rotates, and the cylinder 50 supported by the support 51 fixed to the frame 6 is connected to the thrust receiver 52. 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 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 provided 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. "One by one" 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 nozzles are provided in one row, adhesive is applied in one row (7) and then the adhesive transfer roll
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. The insertion roller 73 is attached to the tip of the arm 72. Further, the 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 of. 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 rotation number coincides with the set winding length signal, and during the winding of one log 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 driving gears 107 to 109, and driving devices 110 and 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, the 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.
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.

The operation of the web winding device of this embodiment will be described below. First, the operation of adhering the leading end of the web 1 to the 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, 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 uses the nozzle 62 to apply the adhesive 7 supplied from the adhesive supply device (not shown) to the adhesive transfer roll 40.
One row is applied to the elastic body 41 on the surface. At this time, by moving the adhesive transfer roll 40 in the axial direction of the adhesive transfer roll 40 by the cylinder 50 (see FIG. 2),
The adhesive 7 is applied to the surface of the elastic body 41 of the adhesive transfer roll 40 along the longitudinal direction thereof. Adhesive injection device 6
When the number of installations of 0 is small, the adhesive 7 can be 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. The amount of adhesive 7 applied can be adjusted freely 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. Can be adjusted. This adhesive application work is
Perform with the agent transfer roll 40 stopped without rotating.
Therefore, the adhesive can be applied with a narrow width and a uniform width.
Of course, no stringing of adhesive occurs.

Next, when the adhesive transfer roll 40 is preset from the state shown in FIG.
0 (see FIG. 3) to rotate the first as shown in FIG.
The web 1 is sandwiched between the first winding drum 10 and the adhesive transfer roll 40 at a position near the groove 11 formed on the winding drum 10, that is, at a position rearward of the groove 11 in the rotation direction of the first winding drum 10. To do so. 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 good peelability, the adhesive transfer roll 40 and the first winding drum 1
When 0 and 0 respectively rotate and the adhesive transfer roll 40 separates from the first winding drum 10, the adhesive 7 is entirely transferred to the web 1 without remaining on the elastic body 41 on the surface of the adhesive transfer roll 40. It will be. In this case, the adhesive transfer
The peripheral speed of the copying roll 40 and the traveling speed of the web 1 are synchronized.
Therefore, the adhesive 7 transferred to the web 1 has a narrow width.
Therefore, the uniform width is maintained. Besides, it is string
Nothing has happened. The web 1 is held on the surface of the first winding drum 10 by the suction holes 13 and the vacuum box 14 formed on the surface of the first winding drum 10.

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 the rotation of 30 starts, the web separating roll 30 moves into the cylinder 35 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 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 winding drum 10 and the second winding drum 20, the winding core 74 is moved to the space between the first winding drum 10 and the second winding drum 20 by the winding core inserting means 70. Can be lifted. Then, the winding core 74 and the front end portion 1b of the web coated with the adhesive 7 form the first winding drum 10 and the second winding drum.
Pressure is applied by 20 and the insertion roller 73, and the web leading end portion 1b is bonded to the winding core 74.

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, The winding of a new winding roll starts above the second winding drum 20. On the other hand, the winding roll 9 contacts the winding roll 9 and the second winding drum 20 because the log brake 21 provided on the upper rod of the second winding drum 20 rises at the same time when the winding is completed. , 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 to 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, as shown in FIG. 10, the adhesive 7 is applied to the web tail edge 1a and the adhesive 8 is applied to the web tip portion 1b. become. Then, the tail edge 1a of the web is fixed to the winding roll by the adhesive 7, and the tip portion 1b of the web is adhered to the winding core 74 by the adhesive 8. Therefore, in this case, not only the tip of the web 1b 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 width is narrow over the entire width of the web in the direction perpendicular to the running direction of the web 1, the width is uniform, and the yarn drawing is performed.
Kiga not adhesive 7,8 can coating as occurs, Ru can reduce the unnecessary adhesive. Further, 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. Furthermore, the web tail 1
Since a can be firmly fixed 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 handling is easy even if the roll is wide.

[0026]

According to the present invention, the width is narrow and uniform, and
Since it is possible to apply only the adhesive so that stringing does not occur, the amount of adhesive used can be reduced and the winding roll can be used continuously from the beginning to the end without wrinkles. It is economical because it can be done. Further, since the tail edge of the web 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 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 the adhesive transfer roll, and FIG. 2B is a cross-sectional view of the 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 to which a single row of adhesive is applied.

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

FIG. 10 is an explanatory diagram of a winding state of a web to which two rows of adhesives are applied.

FIG. 11 It is explanatory drawing of the prior art example I.

[Fig. 12] It is explanatory drawing of the prior art example II.

[Fig. 13] It is explanatory drawing of the prior art example III.

[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 spraying device 62 Nozzle 63 Nozzle 70 Core insertion means 74 Core 80 Diameter control roll

 ─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-48-10462 (JP, A) JP-A-61-2645 (JP, A) JP-A-2-291344 (JP, A)

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 comprising a winding drum and a diameter control roll for winding the web, wherein an adhesive means for applying an adhesive to a running web in a direction perpendicular to the running direction of the web is the first. The web is arranged so as to sandwich the web between the first take-up drum and a position near the groove formed on the surface of the take-up drum , and the peripheral speed of the web is rotatable.
An adhesive transfer roll having the same traveling speed, a moving means for moving the adhesive transfer roll in the axial direction, and an adhesive which are arranged at appropriate intervals along the longitudinal direction of the adhesive transfer roll. A web winding device, comprising: a plurality of adhesive ejecting devices for ejecting the adhesive onto the surface of the adhesive transfer roll. 2. A plurality of nozzles for injecting an adhesive are provided to each of the plurality of adhesive injecting devices. The adhesive is applied to the surface of the adhesive transfer roll in a row, and the web is formed by the adhesive. 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 on each of the plurality of adhesive injecting devices, the adhesive is applied to the surface of an adhesive transfer roll in two rows, and the web is formed by the adhesive. 2. The adhesion of the tip portion to the winding core and the fixing of the web tail edge to the winding roll are performed.
The described web winding device.