JPH1171047A - Separating and winding device for slit product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device easily controllable and compact in size by separatingly guiding and winding narrow web forming a free loop by a free loop forming means comprising a nip roller which pressure contacts with the upstream side face of a driving roller and a bridle roller which pressure contacts with the downstream side face. SOLUTION: This device mainly comprises: an unwinding shaft 14 of a wide web roll 12; a cutter 16 which slits a wide web 15 longitudinally; a free loop forming means 20 consisting of a driving roller 22, a nip roller 24 pressure contacted to the upstream side face of the driving roller 22 and a bridle roller 26 pressure contacted to the downstream side face of the driving roller 22; a separating means 30 consisting of three separating rollers 32, 34, 36; and a winding shaft 40. The wide web 15 and a narrow web 18 pass through these members and guide rollers 44a-44f. The separating rollers 32, 34, 36 separate the slit narrow web 18 in a free loop 21, and convey the web keeping the separation condition well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for separating a plurality of narrow webs obtained by slitting a wide web and winding the web on a winding shaft.

[0002]

2. Description of the Related Art A slitter apparatus slits a wide web such as paper or plastic film into a longitudinal slit, and winds the slit narrow web on a winding shaft to form a slit product. If the plurality of slit narrow webs are wound on the same axis when winding, the ends of the narrow webs interfere with each other, and a good slit product cannot be obtained. for that reason,
In order to avoid interference between the ends, a method of separating and guiding the narrow webs using a separator roll and winding the webs around a winding shaft may be considered. However, when a narrow web slitting a wide web is directly provided with a space between the narrow webs via a separator roll and wound on a winding shaft, an oblique tension is generated due to a gap generated between the ends. And wrinkles are generated. Therefore, usually, a device that sorts two winding shafts that are not arranged on the same axis and winds each narrow web is generally used. However, a method of sorting the two winding shafts is as follows. Since the equipment is large, the capital investment is expensive, and the operation at the beginning and end of winding becomes complicated, which has the drawbacks.

[0003]

Therefore, in order to perform winding without causing interference between the ends on the same axis,
A method has been attempted in which a free loop is formed while the narrow web is being conveyed, and the narrow web on which the free loop is formed is separated by a separator roller, guided, and wound on a winding shaft.
However, the method for forming the free loop requires a large space for providing the free loop, or adjusts the feeding speed for feeding the narrow web before and after the free loop and the winding speed for taking the free loop to adjust the free loop. It is not easy to maintain a constant shape, and there is a problem that it is necessary to adjust the feed speed and the winding speed using complicated detection means and control means.

[0004] In order to solve the above-mentioned problems technically, the present invention makes it possible to separate narrow webs obtained by slitting a wide web into a good slit product on the same axis. It is another object of the present invention to provide a slit product separating and winding device which is easy to control, is formed in a compact size, and includes space-saving equipment.

[0005]

According to the present invention, there is provided an apparatus for separating a plurality of narrow webs obtained by slitting a wide web into a winding shaft, and comprising: a drive roller; a nip roller pressed against an upstream side surface of the drive roller; A free-loop forming means consisting of a bridle roller pressed against the downstream side surface of the drive roller, and a separating means consisting of at least one separate roller. A slit product separating and winding device is characterized in that the slit product is separated and guided by a separating means and wound on a winding shaft.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic side view of a slit product separating and winding apparatus of the present invention, FIG. 2 is a side view of a main part of a free loop forming means of the slit product separating and winding apparatus, and FIG. FIG. 4 is a sectional view of a separator roller.

In FIG. 1, a slit product separating and winding apparatus 10 includes an unwinding shaft 14 of a wide web roll 12, a cutter 16 for slitting the wide web 15 in a vertical direction, a drive roller 22, and an upstream side surface of the drive roller 22. Loop forming means 20 comprising a nip roller 24 and a bridle roller 26 pressed against the downstream surface of the drive roller 22, and three separate rollers 32, 3.
4 and 36, and a winding shaft 40 as main components. The wide web 15 and the narrow web 18 are composed of these members and the guide rollers 44a to 44a.
4f and so on. 46 is a holding roller.

The wide web roll 12 is generally formed by winding a web made of a plastic film around a winding core, and the unwinding shaft 14 has a shaft (not shown) for attaching the winding core and a tension of the unwinding web. And a brake (not shown) for applying the brake force. The cutter 16 includes, for example, a rotary blade.

FIG. 2 shows the free-loop forming means 20. The free-loop forming means 20 includes a drive roller 22, a nip roller 24 pressed against the upstream side of the drive roller 22, and a pressure contact against the downstream side of the drive roller 22. The free loop 21 is formed with the bridle roller 26 as a main component. In the free loop forming means 20, the nip roller 24 is pressed against the upstream side of one drive roll 22 by a cylinder 25, and the bridle roller 26 is pressed against the downstream side by a cylinder 27. Rotational force is transmitted to the drive roll 22 by a drive motor 27 shown in FIG. 3, and the nip roller 24 and the bridle roller 26 are pressed against one drive roll 22.
And the feed speed of the narrow web 18a conveyed while being nipped by the nip roller 24 pressed against the drive roller 22,
Since the pulling speed of the narrow web 18b nipped and conveyed by the drive roller 22 and the bridle roller 26 pressed against the drive roller 22 becomes the same, the free loop 2
1 can always maintain a constant shape.

FIG. 3 shows a driving source, and a driving motor 2
Numeral 7 transmits the rotational force to the drive roller 22 and the drive roller 23 via the timing belt 28. Further, the rotational force of the gear is transmitted to the rotary blade 16 via the tension roller 29c. 29a
Reference numerals 29d denote tension rollers for tensioning the timing belt 28.

In FIG. 1, separate rollers 32, 3
Reference numerals 4 and 36 denote the separated narrow web 18 in the free loop 21 and transport the separated web.
At the downstream of 6, the separation state is further favorably maintained by using a separate roller 36 to carry the sheet. Separating rollers 32, 34, 3 constituting this separating means 30
The number 6 is not necessarily three as shown in the present embodiment, and it is sufficient if there is at least one in the free loop.

As shown in FIG. 4, in the present embodiment, the separate rollers 32, 34, and 36 have four separate rings 38 at regular intervals in the axial direction of the separate roller via a collar 37. The narrow web 18 forming the free loop 21 by the ring 38 is
It can be transported separately. The ring thickness W of the separate ring 38 is preferably 1 to 10 mm, more preferably 2 to 5 mm. The narrow web 18 is separated at intervals corresponding to the ring thickness W of the separate ring 38 provided on the separate rollers 32, 34, 36. The number of the separate rings 38 and the intervals at which the separate rings 38 are provided may be arbitrarily set, and may be set so as to obtain any number of slit products having different slit widths.

The narrow web 18 conveyed via the separate rollers 32, 34, 36 is wound on a winding shaft 40 while being pressed by a pressing roller 46.

Next, the operation of the slit product separating and winding apparatus 10 will be described.

A wide web 15 is unwound from an unwinding shaft 14 and slit into a plurality of narrow webs 18 by a cutter 16. Next, after the narrow web 18 is nipped and conveyed by the drive roller 22 and the nip roller 24 pressed against the drive roller 22, the narrow web 18 forms a free loop 21 in which the tension is released.

The narrow web 18 having the tension released and forming the free loop 21 is stretched around separator rollers 32 and 34, and the narrow webs 18 are separated from the separator rollers 32 and 3 respectively.
4 are separated and conveyed at intervals corresponding to the ring thickness W of the separate ring 38 provided in the axial direction. At this time, since the narrow webs 18 form the free loops 21 and are released from the tension, the webs 18 are conveyed to the downstream side without applying any lateral tension and without wrinkles.

Next, the narrow web 18 that is separated and conveyed is conveyed while being sandwiched between the drive roller 22 and the bridle roller 26 pressed against the drive roller 22. The narrow web 18, which is conveyed while being sandwiched between the drive roller 22 and the bridle roller 26, is imparted with the latter half web tension by the rotational force of the winding shaft 40 while maintaining a good separation state via the separator roller 36. Then, it is pressed by the pressing roller 46 and wound on the winding shaft 40 under a predetermined tension. The winding shaft 40 is not limited to a single winding shaft, and the present invention includes a winding method using a plurality of winding shafts and a winding method using a plurality of non-collinear winding shafts. .

The slit product separating and winding apparatus 10 of the present invention.
Can be used to manufacture slit products from various wide webs such as paper and plastic films,
Among them, a plastic film having flexibility and elasticity can be preferably used.

[0019]

As described above, the slit product separating and winding apparatus according to the present invention, when forming a free loop composed of a narrow web slitted by a cutter, has a drive roller and an upstream side surface of the drive roller. A free loop is formed by a free loop forming means including a bridging roller pressed against a downstream side of a drive roller and a nip roller pressed against the nip roller. Can be obtained. Further, when forming a free loop, the feed pinch roll and the bridle roller are pressed against the drive roll to which the rotational force is applied by the drive motor to form a free loop, so that the narrow web has the same feed speed as the upstream side. Since the downstream take-off speed is conveyed by the same drive roller, the shape of the free loop can be always kept constant without using complicated detection means and control means. In addition, the presence of at least one separate roller in the free loop enables the narrow web to be easily separated and conveyed without wrinkles, etc., and to take up a good slit product. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a slit product separating and winding device of the present invention.

FIG. 2 is a side view of a main part of a free loop forming means of the slit product separating and winding device of the present invention.

FIG. 3 is a side view of a main part of a driving source of the slit product separating and winding device of the present invention.

FIG. 4 is a sectional view of the separator roller of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Slit product separation winding device 12 Wide web roll 15 Wide web 16 Cutter 18 Narrow web 20 Free loop forming means 21 Free loop 22 Drive roller 24 Nip roller 26 Bridle roller 30 Separating means 32, 34, 36 Separate roller 37 Color 38 Separate Ring 40 take-up shaft 46 pressing roller

Claims (1)

[Claims] 1. A device for separating a plurality of narrow webs obtained by slitting a wide web and winding them around a winding shaft, comprising: a drive roller; a nip roller pressed against an upstream side surface of the drive roller; And a separating means including at least one separate roller. The narrow webs each having a free loop formed by the free loop forming means are separated and guided by the separating means. A slit product separation winding device characterized by winding on a winding shaft.