JPH11114881A - Slitter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain optimal tensile force of a wide web, and prevent flapping by providing a first nip roller to nip the wide web between it and a feed roller and a second nip roller to nip a multiple strip web between it and a lower blade roller of a slitter. SOLUTION: A slitter device 10 rolls out a wide web 1 from an original textile rolling-out reel 11, and sends it in a slitter 14 through a splice device 12 and a feed roller 13, and obtains a multiple strip web 2 by slitting it by a lower blade roller 14A and an upper blade 14B of the slitter 14. The slit multiple strip web 2 is wound round a paper tube 3 rollingly contacting with a surface roller 15 through the surface roller 15. The slitter device 10 has a rubber first nip roller 21 to nip the wide web 1 between it and the feed roller 13 and a rubber second nip roller 22 to nip the multiple strip web 2 between it and the lower blade roller 14A of the slitter 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slitter for webs such as paper, plastic films, and metal sheets.

[0002]

2. Description of the Related Art Conventionally, a slitter apparatus feeds a wide web into a slitter via a feed roll, slits the slitter, obtains a multi-web, and winds the multi-web on a paper tube through a surface roll or a pass roll. I'm going to take it.

[0003]

However, the prior art has the following problems. The tension acting on the wide web when slit by the slitter is applied by the drive control of each of the feed roll and the lower blade roll of the slitter, but this tension is the tension on the upstream side of the feed roll and the downstream of the lower blade roll. Not stabilized due to side tension. Further, the wide web may slip with respect to the lower blade roll, and may cause fluttering. That is, it is difficult to maintain the optimum tension of the web slit by the slitter and to prevent fluttering, which impairs the sharpness of the slitter.

[0004] At the beginning of winding a multi-strand web slitted by a slitter onto a paper tube via a surface roll, the leading end of the multi-strand web is manually wound around the paper tube. It is wound while meandering under the condition. For this reason, each of the multiple webs oscillates in the width direction of each paper core at the beginning of winding on each of the corresponding paper cores in a one-to-one correspondence, so that the edges of the webs between adjacent paper cores are mutually separated. Overlap occurs, and there is a disadvantage that the adjacent paper tubes cannot be separated from each other after the completion of winding on each paper tube.

[0005] In order to prevent the above-mentioned meandering of the multi-web web, a laion roll is provided for winding, but in this case, a complicated path having a plurality of pass rolls provided between the slitter and the winding is required. For example, the space from the slitter to the take-up becomes excessively large, and the device configuration becomes complicated and large.

An object of the present invention is to maintain the optimum tension of a wide web slit by a slitter, prevent fluttering, and improve the sharpness of the slitter.

Another object of the present invention is to prevent a multi-web slitted by a slitter from meandering on a traveling path to a paper tube by using a compact device configuration, and to reduce the meandering between cores of adjacent paper tubes. To prevent overlapping of the web edges.

[0008]

According to a first aspect of the present invention, there is provided a slitter for feeding a wide web to a slitter through a feed roll, slitting the slit with the slitter, and obtaining a multi-web. And a second nip roll for nipping the multi-web between the lower blade roll of the slitter and the first nip roll.

According to a second aspect of the present invention, a wide web is fed to a slitter via a feed roll, slit by the slitter, and a multi-web is obtained. In a slitter apparatus that rolls or winds on a paper tube that is in close proximity, a first nip roll that nips a wide web with a feed roll, and a second nip roll that nips a multi-web with a lower blade roll of the slitter are provided. And a suction unit for sucking the multi-layer web on the surface roll.

[0010]

According to the first aspect of the present invention, the following operations are provided. The tension acting on the wide web when slit by the slitter is applied by drive control of the feed roll and the lower blade roll of the slitter. At this time, this tension is cut off the edge with the upstream by the presence of the first nip roll facing the feed roll, and cut off the edge with the downstream by the presence of the second nip roll facing the lower blade roll of the slitter, Maintains stable. The wide web is the second
The presence of the nip roll prevents slippage of the lower blade roll and prevents fluttering. That is, the presence of the first nip roll and the second nip roll maintains the optimum tension of the wide web slit by the slitter, prevents fluttering, and improves the sharpness of the slitter.

According to the second aspect of the present invention,
Has the effect of The slit multi-web is held at one end by the nip between the lower blade roll and the second nip roll, and is held at the other end by the suction part of the surface roll. As a result, the tension is maintained between the lower blade roll and the surface roll. The paper is fed into the paper tube in a stable running state without meandering without meandering. For this reason, each of the multi-strand webs is a core portion at the beginning of winding onto each of the corresponding paper cores, and the web between the adjacent paper cores does not swing in the width direction of each paper core. Does not occur. Therefore, the adjacent paper tubes can be reliably separated from each other after the winding onto each paper tube.

[0012] The presence of the suction portion of the second nip roll and the surface roll makes it possible to prevent meandering of the multi-web, so that a complicated path having a plurality of pass rolls is provided between the slitter and the surface roll. Is unnecessary, the space between the slitter and the take-up can be reduced, and the apparatus configuration can be made compact.

[0013]

FIG. 1 is a schematic diagram showing an example of a slitter device, FIG. 2 is a schematic diagram showing a slitter, and FIG. 3 is a schematic diagram showing a surface roll.

As shown in FIG. 1, the slitter device 10 unwinds the wide web 1 from a raw material unwinding reel 11, passes through a splicing device 12 and a feed roll 13, and
And the lower blade roll 14A of the slitter 14 and the upper blade 1
The multi-strand web 2 is obtained by slitting with 4B. The slit multi-web 2 passes through the surface roll 15,
The paper roll 3 is wound around the paper tube 3 that comes into contact with the surface roll 15. The paper tube 3 is a take-up shaft 1 supported at both ends by a bearing base 16A.
6 is provided detachably adjacently in the axial direction by a number corresponding to the number of the multiple webs 2.

Here, the feed roll 13 and the slitter 1
The lower blade roll 14A and the upper blade 14B are respectively driven and controlled, and the wide web 1 slit by the slitter 14 is provided.
A constant tension. In addition, surface roll 15
Is also driven, and the air bearings 1
By pressing the 6A along the guide rail 17, the paper tube 3 pressed against the surface roll 15 is rotated around the surface roll 15 to rotate the multi-web 2 onto the paper tube 3. I do.

However, in the slitter apparatus 10, the first web nip roll 21 which nips the wide web 1 with the feed roll 13 and the lower web roll 14A of the multi-web 2 with the slitter 14 are used. And a second nip roll 22 made of rubber which nips the rubber.

In the slitter device 10, the surface roll 15 is provided with a suction section 23 for sucking the multi-strand web 2. The suction portion 23 is fixedly provided in a fixed angle region immediately before the point of contact of the multi-strand web 2 with the surface roll 15, and has a negative pressure of a suction chamber 23A fixedly arranged in the fixed angle region inside the porous rotary drum 15A. Is applied to the perforations of the perforated rotary drum 15A to thereby suction the multi-web 2 onto the surface of the perforated rotary drum 15A.

In the slitter device 10, the second
An expander roll 24 is provided between the nip roll 22 and the surface roll 15. Expander roll 2
Numeral 4 allows the slit web 2 to be held open and adjusted so as to prevent overlapping of the edges of each web 2 between adjacent paper tubes 3.

The slitter device 10 has the following features. (A) Measures to improve the sharpness of the slitter 14 As shown in FIG. 2, the slitter 14 employs a shearing method including a lower blade roll 14A and an upper blade 14B. However, the slitter 14 may be of a leather cut type or a score cut type. The slitter device 10 aims to stably maintain the optimum tension of the wide web 1 to be slipped by the slitter 14 and prevent fluttering from the following.

The unwinding tension of the web 1 is cut by the first nip roll 21 attached to the feed roll 13, and the second nip roll 2 attached to the lower blade roll 14A.
2, the winding tension of the multi-web 2 is cut.

The feed roller 13 is driven as a main drive,
The lower blade roll 14A and the surface roll 15 are driven via the PIV to keep the optimum tension of the wide web 1 stable against slipping and prevent the wide web 1 from fluttering.

The second nip roll 22 prevents the wide web 1 and the lower blade roll 14A from slipping. Further, the multi-web 2 after the slit is stably run without meandering by the second nip roll 22.

(B) Measures to prevent overlap of web edges at the core (start of winding) of the paper core 3 The multi-web 2 is wound on the paper core 3 as follows. A double-sided adhesive tape 4 is provided at the end of the multi-strand web 2, and the winding shaft 16 on which the paper tube 3 is set is pressed by applying an initial pressure by an air cylinder to press the paper tube 3 against the surface roll 15 (see FIG. 3).

When the operation of the slitter device 10 is turned on, the multi-web 2 fed from the lower blade roll 14A is caused by the presence of the second nip roll 22 attached to the lower blade roll 14A and the suction portion 23 provided on the surface roll 15. The tension is maintained between the lower blade roll 14 </ b> A and the surface roll 15, and the roll is wound around the paper tube 3 without causing slack while keeping the surface roll 15 in close contact. The suction section 23 of the surface roll 15 feeds the multi-web 2 stably without meandering until it is wound on the paper core 3, and as a result, each of the multi-webs 2 corresponds to each paper core corresponding to each other. At the winding core portion at the beginning of winding on the paper core 3, the edge of the web 2 is prevented from overlapping between adjacent paper cores 3 without swinging in the width direction of each paper core 3.

(C) Measures to Improve the Winding Form By controlling the pressing pressure of the paper tube 3 against the surface roll 15 by pushing the winding shaft 16 of the paper tube 3 by an air cylinder, the winding hardness of the multi-web 2 is controlled. Is adjusted, but an initial winding pressure, a constant pressure, a taper pressure, and the like can be set. The winding shaft 16 of the paper core 3 is moved to the surface roll 1
The winding can be obtained by forcibly driving instead of being caused to rotate along with 5.

The winding shaft 1 is provided below the winding shaft 16 of the paper tube 3.
A pneumatic push-up straightening roll 25 for straightening is provided. Since there is a possibility that wrinkles may occur in the multi-web 2 due to the contact friction of the surface roll 15 with the multi-web 2 wound on the paper core 3 and the contact friction of the straightening roll 25, the straightening roll 25 is Drive compensation.

Therefore, according to the present embodiment, the following operations are provided. Wide web 1 when slit by slitter 14
The tension acting on the feed roll 13 and the slitter 14
Is given by the drive control of each of the lower blade rolls 14A. At this time, the tension is cut off from the upstream side by the presence of the first nip roll 21 facing the feed roll 13, and is reduced by the presence of the second nip roll 22 facing the lower blade roll 14 </ b> A of the slitter 14. The edges are cut and maintained stable. Further, the wide web is prevented from slipping with respect to the lower blade roll due to the presence of the second nip roll, and is prevented from fluttering. That is, the first nip roll 2
Due to the presence of the first and second nip rolls 22, the slitter 14
Maintenance of the optimum tension of the wide web 1 slit by
This prevents fluttering and improves the sharpness of the slitter 14.

The slit web 2 is held at one end by a nip between the lower blade roll 14A and the second nip roll 22, and the suction portion 23 of the surface roll 15 is provided.
Is held at the other end, and as a result, the tension is maintained between the lower blade roll 14A and the surface roll 15 without sagging, and the paper is fed into the paper tube 3 in a stable running state without meandering. For this reason, each of the multiple webs 2 is a core portion at the beginning of winding onto each of the paper tubes 3 corresponding to each other, and does not swing in the width direction of each of the paper tubes 3.
No overlap of the web edges between the two. Therefore,
Adjacent paper tubes 3 can be surely separated from each other after winding on each paper tube 3 is completed.

Due to the presence of the suction portion 23 of the second nip roll 22 and the surface roll 15, the multi-web 2
Meanwhile, it is not necessary to provide a complicated path having a plurality of pass rolls between the slitter 14 and the surface roll 15, and the slitter 14 to
The space of the surface roll 15 can be reduced, and the device configuration can be made compact.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and the design can be changed without departing from the scope of the present invention. The present invention is also included in the present invention. For example, the present invention does not necessarily wind the multi-web web 2 slit by the slitter 14 onto the paper tube 3 via the surface roll 15, but cuts the multi-web web 2 slit by the slitter 14 into a predetermined length. The present invention can also be applied to a slitter device for equipment for discharging and stacking.

[0031]

As described above, according to the present invention, it is possible to maintain the optimum tension of the wide web slit by the slitter, prevent fluttering, and improve the sharpness of the slitter.

Further, according to the present invention, by means of a compact apparatus configuration, meandering of the multi-web cut into slits by the slitter on the traveling path to the paper tube is prevented, so that the winding between the cores of the adjacent paper tubes is prevented. Of the web edges can be prevented from overlapping.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating an example of a slitter device.

FIG. 2 is a schematic diagram showing a slitter.

FIG. 3 is a schematic view showing a surface roll.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wide web 2 Multi-web 3 Paper core 4 Double-sided adhesive tape 10 Slitter device 13 Feed roll 14 Slitter 14A Lower blade roll 15 Surface roll 21 First nip roll 22 Second nip roll 23 Suction part

Claims (2)

[Claims] 1. A slitter device for feeding a wide web to a slitter via a feed roll, slitting the slit by the slitter, and obtaining a multi-web. A first nip roll for nipping the wide web between the feed roll and a multi-web. A second nip roll that nips between the slitter and a lower blade roll. 2. A wide web is fed into a slitter through a feed roll, slit by the slitter to obtain a multi-web, and then the multi-web is passed through a surface roll to a paper tube which is in rolling contact with or close to the surface roll. In a winding slitter device, a first nip roll for nipping a wide web with a feed roll and a second nip roll for nipping a multi-web with a lower blade roll of the slitter are provided. A slitter device comprising a suction part for sucking a web.