JPS58172145A - Method and device to wind up web - Google Patents

Abstract

PURPOSE:To obtain automatic cutting of a web and changing of a new windup roll without hands by pushing a new core with an adhesive layer onto the upper surface of a web of a windup roll finished in the windup work. CONSTITUTION:A windup roll 11 on drums 7 and 8 finished in the windup work is pushed by a roll 9, and rolled onto a cradle 15. Then, a nip guard 20 is brought down to push a core (b) with an adhesive tape 26 applied keeping a web (a) between and the web (a) is attached to the core (b). Meanwhile, the web (a) is cut by a web-cutter 21, and the windup roll 11 is carried out by the cradle 15. Subsequently, the core (b) is drawn by the web (a) to fall down between drums 7 and 8, and a rider roll 12 is brought down on the core (b) to start a new windup work.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a web winding method and apparatus particularly suitable for liner paper.

FIG. 1 shows the basic configuration of a web winding device conventionally used in paper mills and the like. The web winding device shown in Fig. 1 is well known in the past, and consists of a rewinding section (1), a winding section (2), and an unloading section (3). roll, (5) is a paper roll, (6) is a slitter, (force is the first winder drum, (8) is the second winder drum, (
9) is a dump roll, (10) is a core shaft, (11)
) is the take-up roll, (121 is the rider roll, (13) is the shirt top pocketer 1-1 (+4) is the winder table, (
+5) is a cradle.

Figure 1 also shows the winding roll (8) on the winder drum (force (8)).
It also shows a part of the winding work state in which the winding process (11) is completed and the next winding is started after passing through various processes. Now, the web (a) from the unwinding roll (4) is cut into a predetermined width with a slitter (6), and the web (a) is cut into a predetermined length with a take-up roll (11).
) on the winder drum (force (8)), the web winding device stops rotating each roll in the state shown in FIG.

After lifting the rider roll (12) vertically upward,
The operator climbs onto the winder table (14) and tears the outer layer of the take-up roll in the width direction. Next, the dump roll (9) is rotated around the axis of the first winder drum (7) to push the take-up roll (11) onto the Y idle (+5). Thereafter, the dump roll (9) retreats to its original position, and the core (b) installed core shirt l-(10) (hereinafter referred to as the core shaft), which was previously stored in the shaft pocket part (13), 1st and 2nd winder drums (7)
The shaft bringing-in device (
(not shown). Various types of shaft loading devices are already in use in the industry, and their structural functions are well known.1. Therefore, detailed explanation will be omitted.

Next, both ends of the core shaft (10) are held by core chucks and lifted vertically upward, and the operator manually controls the tension of the web (a) between it exiting the rewind roll (4) and reaching the core shaft (10). Work to make it uniform in the width direction. Thereafter, the core shaft (10) is again unloaded onto the winder drum (force (8)) by another operator, and when the web tip is glued onto the core with tape, the excess web is removed by the operator's direct manual work. [5] and removed from the web winding device.

The web leading edge is then glued to the core (b) by adhesive tape directly by the operator. Next, the operator leaves the woven winding device 1, and the rider roll 02) descends onto the core (b) to apply pressure. After that, each roll of the winding device starts rotating again by the drive motor. The web (a) is wound around the outer periphery of the core (b), resulting in the state shown in FIG.

The winding process using the most common conventional web winding device has been described above.However, when using a conventional web winding device, direct manual work by the operator is required as described above. It had many drawbacks. Immediately, after bringing in the core shaft, the operator must manually tear the paper in the width direction9. However, it was extremely troublesome.

In addition, the operator climbs onto the winding device again, and the unwinding roll (
The work to equalize the tension distribution of the web (a) from 4) to the core (b) had to be carried out directly by hand, but this work required skill. If the web (a) were to proceed to the next step and start winding without the tension distribution being made uniform, the web (a) would easily be cut in the initial stage of winding, which would seriously impede the winding. The above-mentioned direct manual work by the operator is carried out by the web winding equipment,
This is caused by a lack of functionality, and is considered a drawback in terms of labor, safety, and work efficiency.

Furthermore, since the Core Shirt I-(10) is used, the Core Shirt (101) cannot be pulled out from the winding roll (11),
In addition, various accessory devices are required for inserting into the core and further transporting the core shaft 00).
The cost of the entire winder is high, the winder mechanism is complicated, the installation space is increased accordingly, maintenance work is increased, and operations are complicated.

Therefore, the present inventor has proposed a method for solving the above-mentioned conventional drawbacks, as disclosed in JP-A-58-44764 and JP-A-58-946.
The web winding device shown in Publication No. 08 has been developed and supplied to the paper manufacturing industry and has been well received.As shown in Figure 9 (a), these devices are capable of winding the web (a) onto the core (b). At the start, the rolls are folded double at the start, and when using thick paper such as paperboard, the folding part deforms the take-up roll, which causes problems such as vibrations.

The present invention aims to eliminate the drawbacks of the above-mentioned conventional technologies by taking advantage of the high tensile strength of cardboard and the strong adhesive strength and ease of handling of double-sided adhesive tape. The web is taken out onto a cradle, and the web is pressed down in the middle to apply tension to the web so that it can be easily cut.A new core having an adhesive layer made of adhesive tape or the like is pressed onto the upper surface of the cradle and then adhered. The web is cut close to the bonded part on the cradle side from the bonded surface, and the new core is brought onto the winder drum by winding the web to the unwinder side. At the same time, the winder drum is rotated in the winding direction, and the The core is rotated so that the web adhesive surface of the core is located above the nip between the core and the drum, and the web is pulled back to the unwinder side so that the web adhesive surface of the core is located above the nip of the first winder drum of the core. It is an object of the present invention to provide a web winding method characterized in that, when the web is unwinded, the rotation of the winder drum is stopped and a new winding is restarted.

The present invention also provides a web pressing device that serves both as a winder drum and a nip guard between the cradle and has a web cutting mechanism, a tape pasting device that uses double-sided adhesive tape to form an adhesive surface on the core in a shirt pocket portion, and a core Provided is a web winding device comprising: a device for pressing the web against a web holding portion; a device for rewinding the web by a certain amount to an unwinder side; and a device for sequentially controlling the movements of these devices. It is something to be excited about.

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 2 to 7 are side views of a web winding device showing an embodiment of the present invention, and the same parts as in FIG. 1 are designated by the same reference numerals. Note that parts with the same reference numerals as in FIG. 1 have the same structure and function, so in the following explanation, only the structure after the mechanism indicated by the reference numeral (20) will be described.

In the figure, (20) is called a nip guard, and the air cylinder (20) is installed along the guide rail (not shown) attached to the winder frame (25) shown in Figure 4 (A).
It is installed so that it can be raised and lowered using the 3J.

It serves to prevent the take-up roll 01) from flying out during the winder's winding operation, and to prevent the operator and foreign matter from entering.

(2υ is a web cutter, which is attached to the knife holder (22) with a sharp blade, and is installed so that it can be raised and lowered in the vertical direction by an air cylinder (23) attached to the nip guard (20). (24) ) is a web presser and has elasticity like a rubber body, and as shown in Figure 4 (b), the nip guard (2
o).

(26) is a double-sided adhesive tape, which is shown in Figure 4 (O).
As shown in the figure, it is preliminarily bonded onto the core (b). This adhesive is applied using the tape applicator (47) shown in Figures 6 and 7.
glued by. In addition, tape applicator (47
), the applicant's earlier application, 1986-1, 1
Since it is described in detail in No. 7571, the explanation will be omitted here.

(27) is a core support, which is attached to the tips of multiple cylinders in the width direction and can be moved up and down. Further, (29) is a cover for the core cover (+3), which is attached to the winder table 04) so as to be openable and closable. Note that the opening/closing mechanism of the pocket can be easily achieved using a cylinder or the like, so a description thereof will be omitted.

(, 30) (31) shown in Fig. 8 are disc brakes, which are installed on the drum shaft of the winder drum (force (8)).
The winder drum (force (8)) is used to brake the rotation of the winder drum (force (8)). Also, 8- (32) and (33) are electric motors that rotate the winder drum (force (8)). (34) is the spool. The shaft has built-in bearings at both ends.The paper machine winds the paper into a roll (4), and the winder holds both ends on stands (85a) (85b). There is.

(36) is the clutch, and the spool shaft (3 (1) and (37)
) is used to connect and disconnect the brakes. (The third force is a disc brake, which brakes the rotation of the unwinding roll (4), and controls the tension of the web (-) during winding operation of the winder. (38) is a clutch, which brakes the rotation of the unwinding roll (4).
37) This is for turning on and off the connection between the payout motors (39).

The payout motor (39) is an electric motor that rotates the rewind roll (4) at low speed. Also shown in Figure 4 (a) (
4n) is a web unwinding detection roll, which is rotatably attached to the stand (42) via a lever (4υ) and pressed to the lower surface of the vapor roll (5) by a cylinder (4).

(451 indicates a ■-shaped pocket formed between the first winder drum (7) and the second winder drum (8).

(46) in Fig. 6 indicates the contact point between the core (b) and the first winder drum (7) in the pocket portion (4). (4η is the tape applicator and the core (b) This is a device for adhering double-sided adhesive tape (26) on top.

Next, to explain the operation, FIG. 2 shows a state in which the winding work of the winding roll 01) is completed in a winder to which the present invention is applied. Next, according to Figures 2, 3, and 8,
The process of pushing out the take-up roll (11) to the cradle (15) will be explained.

First, in the state shown in FIG. 2, the winder operator presses a switch on a control disk (not shown) to start. Nip guard (20) due to this start
and the rider roll (12) rises.

The take-up roll (11) is then pushed onto the winder table (14) by a dump roll (9). At this time the 8th
The clutch (36) shown in the figure is connected, but the clutch side is disconnected. The brake (37) is then used to apply a constant tension to the web (a).

When the take-up roll (11) is pushed out by the dump roller, this (9), tension acts on the web (a), and the brake (
37) The web (a) is sent out by overcoming the O brake force and rotating the rewind roll (4).

When the take-up roll (11) is pushed onto the winder table (I4), the brake (37) is released. Then, the clutch (38) is connected. Next is the payout motor (39
) is driven in the feeding direction of the web (a). At this time, the shaft pocket cover is at the limit position. The payout motor (3) causes the web (a) to loosen, and the take-up roll 01 rolls and transfers onto the cradle (151).

Therefore, the take-up roll (11) rolls without slack in the web (a). During this time, the dump roll (9) returns to its original position. The upper surfaces of the winder table (14) and the shaft pocket cover t29) are sloped so that the winding roll 01) can be transferred under its own weight.

Next, when the take-up roll 01) moves into the cradle (one position above), the drive of the payout motor (3) is stopped and the brake (37) is turned on.Then, the shaft pocket cover (29) is opened.

Next, referring to FIG. 4, the adhesion of the reweb (a) and the new core (b) and the cutting of the web (a) will be explained. First, after the take-up roll (11) is transferred onto the cradle (15), the nip guard (20) is lowered. The amount by which the web (a) is pulled back is not pulled toward the unwinder side by the take-up roll θυ on the cradle 05).

Double-sided adhesive tape (26) was attached in advance to the core (
b) is connected to the air cylinder (28) via the core holder (27).
As a result, the web (a) is sandwiched and pressed against the web presser (24) installed on the lower surface of the nip guard (20).

At this time, due to the elasticity of the web presser (24), the web (a) and the core (b) are evenly adhered to the entire core by the adhesive tape (26).

Next, the web cutter (21) is lowered by the cylinder (2) through the knife holder (2) and cuts the web (a).
cut. Since the web cutter (21) is provided close to the adhesive surface between the core (b) and the web (a), the core (
b) The distance between the web adhesion surface and the web cut surface can be shortened.

After cutting the web (a), the nip guard (20) is raised to the operating position. The nip guard operating position is at a height that does not interfere with tape application work. Next, the web rewinding detection roll (4
0) is pressed against the lower surface of the paper roll (5).

After cutting the web, the take-up roll (11) transferred to the cradle (+5) is carried out by the cradle (+5).

Next, referring to FIGS. 5 and 8, the process up to bringing the core (b) bonded to the web (a) into the pocket portions (four pockets) will be explained.

First, the payout motor (roller) is rotated in a direction that pulls the web (a) toward the unwinder.
is pulled and the web (a) (!: glued core (b)
moves parallel to the entire center toward the unwinder side, and when it passes the top of the second winder drum (8), it falls into the pocket portion (four pockets) with the adhesive surface to the web (a) facing down.

At this time, the first winder drum (8) and the second winder drum (8) are rotated at low speed in the winding direction by the electric motor (32 (33). Therefore, the core (b) is The contact point (46
) receives a rotational force at the contact point between the second drum (8) and the second drum (8). The rotation of the core (b) causes the bond between the core (b) and the web (a) to roll past the point of contact (46).

However, since the payout motor (39) continues to rotate during this time, the core (b) is rewound against the rotational force of the winder drum (force (8). ) is at the contact point (46), the payout motor (stops the ticking).At this time, if the web (a) is unwound too far to the unwinder side, the bond between the core (b) and the web (a) will peel off. Therefore, it is necessary to control the unwinding length of web (a).

The rewinding length of the web (a) is detected and controlled by the rotation of the web rewinding detection roller (4(1)).The rewinding of the web (a) causes the roller (40) to rotate.

At this time, the unwinding length of the web (a) is detected using the proportional relationship between the unwinding length of the web (a) and the number of rotations of the roller. When the roller (40) reaches a predetermined rotational speed, the payout motor is stopped and the rewinding of the web (a) is stopped.

After the payout motor stops, the electric motor (32) (3■
is stopped, and the rotation brake of the winder drum (force (8) is applied).Therefore, the web (a) is stopped with tension applied to it.

Next, as shown in Figure 7, move the rider roll θ2) to the core (b).
Lower it to the top and start a new winding. The tape applicator shown in FIG. 7 is shown adhering double-sided adhesive tape (26) onto the next new core (C).

Detecting the movement of each device as described above using an IJ switch, pressure switch, photoelectric switch, etc., and starting and stopping each device in sequence can be easily achieved using normal control technology, so the explanation is omitted. However, in the present invention, in a winder for cardboard that cannot allow the winding of a folded web, after a winding roll of a predetermined length is completed on the winding drum, the winder is stopped and the wholesale replacement process is performed. In this series of operations, all movements of each device are automatically performed by giving a start command to the operation switch, and a new core is brought onto the winding drum, making it possible to restart winding.

With the winder of the present invention, it is sufficient for the operator to perform monitoring work on the control disk during each operation of the wholesale replacement process, and there is almost no need for in-machine work that was done with conventional winders. Safety can be greatly improved. In addition, with conventional winders, for example, 4 to 5 operators are required to perform operations that are repeated once every few minutes with a so-o-o-mm class winder, but with the winder of the present invention, one operator is sufficient. be.

In the present invention, the complex movements of each device can proceed automatically without interruption.'11. Therefore, compared to the conventional method in which the operator directly arranges the cores on the winding drum, cuts the web, and adheres the web onto the core using adhesive tape, the winder stop time is greatly reduced. The winding production capacity of the winder increases. - For example, during finishing
The downtime for wholesale replacement in an o o mm winder is 100 seconds with a conventional winder, but with the winder of the present invention, it takes about 50 seconds.

Furthermore, in the winder of the present invention, new cores are not brought between the drums by the web, so there is no need to provide a special core bringing-in device, and the cost is reduced.

Furthermore, since the web is bonded to the core without folding, it is possible to wind the web even in a winder for cardboard without excessive deformation of the lower winding portion and the resulting vibrations. Furthermore, since the web is held in the nip between the core and the drum at the beginning of winding, the web can be wound around the core without slack from the beginning, improving the quality of the take-up roll.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of a conventional web winding device, and FIG. 2, FIG. 3, FIG. 4(B) is an enlarged view of the main part of FIG. 4(A), FIG. 5(B) is a side view showing different operating states of the web winding device without showing examples (A) is an enlarged view of the main part, FIG. 8 is a plan view of FIG. 5 (A) with the web removed, and FIG. It is. Explanation of main parts of the figure 4...Rewinding roll 6...Slitter 7...First winder drum 8...Second winder drum b...Core 114.・Take-up roll 15・
...Cradle 20...Nip guard 22...
- Knife holder 23... Air cylinder 24... Web presser 25... Winder frame 26...
Double-sided adhesive tape 27... Core receiver 32° 38... Electric motor 86... Clutch 37... Disc brake 39... Payout motor 40... Web rewinding detection port 45... Pocket Part 47...Tape applicator patent Applicant: Mitsubishi Heavy Industries, Ltd. 19-

Claims (2)

[Claims] (1) Take the take-up roll from the winder drum onto the cradle, press the web downward in the middle to apply tension to the web to make it easier to cut the web, and apply an adhesive layer such as adhesive tape to the upper surface of that part. Then, the web is cut closer to the bonded part on the cradle side than the bonded surface, and the new core is brought onto the winder drum by winding the web to the unwinder side. Rotate in the winding direction,
The brought core is rotated so that the web adhesive surface of the core is located above the nip between the core and the drum, and the web is pulled back to the unwinder side, so that the web adhesive surface of the core is placed above the nip between the core and the drum. A web winding method characterized in that when the web reaches the nip with the web, the web is unwinded, the rotation of the winder drum is stopped, and a new winding is restarted. (2) A web holding device that also serves as a nip guard between the winder drum and the cradle and has a web cutting mechanism; a tape pasting device that uses double-sided adhesive tape to form an adhesive surface on the core in the shaft pocket; and a device for rewinding the web by a certain amount to the unwinder side. A web winding device comprising a device for sequentially controlling the movement of the web winding device.