JP3777724B2 - Sheet split winding device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sheet division winding device that divides a strip-like sheet such as a plastic film into a plurality of strips and distributes the divided sheet to two winding shafts. The sheet split winding device of the present invention particularly includes a touch roller that can be driven at a slight speed with respect to the belt-type sheet feeding roller, and adjusts the tension of the split sheet supplied to the winding shaft immediately before winding by the touch roller. Is in a format that can be.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is a sheet split winding device of the above type that includes a common touch roller over the entire width of the winding area for each of the upper and lower winding shafts, as disclosed in, for example, Japanese Patent Publication No. 61-21899. . In addition, as disclosed in, for example, Japanese Patent Application Laid-Open No. 61-55047, there are some which include a touch roller subdivided for each divided sheet.
[Problems to be solved by the invention]
[0003]
Generally, a strip-like sheet such as a plastic film has uneven thickness, that is, unevenness in thickness, and even if it is a take-up roll of a divided sheet wound simultaneously on the same winding shaft, there is a difference in each outer diameter due to uneven thickness. Arise. In the sheet split winding device provided with the common touch roller, if the strip sheet is unevenly thick, the winding roll with the small outer diameter at the same time reduces the contact pressure with the common touch roller. Winding deviation is likely to occur. Therefore, when winding a belt-like sheet having a large uneven thickness, a sheet split winding device including a subdivided touch roller is used.
[0004]
However, recently, it is required to divide a strip-like sheet having a large uneven thickness into a plurality of strips with a narrow width. However, in the divided sheet winding device including the subdivided touch rollers, the touch rollers are arranged in a line in the sheet width direction and both ends thereof are supported by swinging arms. Swing arms arranged back to back between the matching touch rollers interfere with each other. Therefore, in order to avoid this interference, the width of the swing arm must be made as narrow as possible. However, in this divided sheet winding device, a transmission device for transmitting a driving force to the touch roller and a contact pressure device for pressing and urging the touch roller are mounted on the swing arm of each touch roller. As a result, the structure of the swing arm portion becomes complicated, and the interval between the swing arms arranged between adjacent touch rollers becomes wide. For this reason, when it is necessary to divide the belt-like sheet into a plurality of strips with a narrow width, it is not possible to provide a touch roller that is subdivided so as to correspond to each of the divided sheets, resulting in a problem that the above-described requirements cannot be met.
[0005]
[Means for Solving the Problems]
The present invention includes a common touch roller capable of being driven at a slight speed, contacting a take-up roll of a divided sheet on a winding shaft, a plurality of individual touch rollers arranged in the width direction of the divided sheet downstream of the common touch roller, and the common A pair of support arms that support the touch roller, a beam member supported by the pair of support arms at a position close to the common touch roller, and a plurality of members mounted to the beam member so as to be positionable in the longitudinal direction of the beam member. A slide body and a swing arm that is swingably attached to the slide body and supports the individual touch roller so as to be pressed against the winding roll by gravity are provided. In the present invention, the individual touch roller is pressed and urged against the winding roll on the winding shaft by gravity, and therefore it is necessary to provide a driving device for pressing and urging the individual roller between the swing arm and the slide body. In addition, the structure of the means for supporting the individual touch roller is simplified, and a large number of individual touch rollers having a narrow width can be provided downstream of the common touch roller. And during winding, each winding roll comes into contact not only with the common touch roller but also with the individual touch roller, so the outer diameter of the winding roll of the divided sheet wound simultaneously on the winding shaft due to the uneven thickness of the belt-like sheet Even if the contact pressure between the common touch roller and the take-up roll decreases or the contact pressure disappears, the contact pressure can be supplemented by the individual touch roller, thereby preventing winding deviation. it can. Further, even if a large number of individual touch rollers are provided by supporting the beam member at a position close to the common touch roller by a pair of support arms that support the common touch roller, they are wound together with the common touch roller. It can be moved close to and away from the shaft.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
The sheet split winding device of the present invention distributes the strip sheet to two winding shafts while winding the strip sheet into a plurality of strips. A common touch roller that can be driven at a slight speed, contacting a take-up roll of the divided sheet on the winding shaft, a plurality of individual touch rollers arranged in the width direction of the divided sheet downstream of the common touch roller, and the common touch A pair of support arms for supporting the roller; a beam member supported by the pair of support arms at a position close to the common touch roller; and a plurality of slide bodies mounted on the beam member so as to be positionable in a longitudinal direction of the beam member And a swing arm that is swingably attached to the slide body and supports the individual touch roller against the take-up roll by gravity. The swing arm has a recess provided upward from the lower edge thereof, and a portion around the recess is fitted into an annular groove provided on the outer periphery of the slide body so as to cover the bottom of the groove. Accordingly, it is desirable that the slide body is swingably mounted.
[0007]
【Example】
The embodiment will be described with reference to the drawings. In FIG. 1, the sheet dividing and winding device unwinds a wide belt-like sheet S0 from a raw roll (not shown) and divides it into a plurality of strips with a known slitter 1, The divided sheets S are alternately distributed to the two winding shafts 2 arranged above and below, and wound around the individual cores C attached to the outer periphery of the winding shaft 2 to form a winding roll R. The sheet split winding device includes a common touch roller 3 and an individual touch roller 4 for bringing each winding shaft 2 into contact with the winding roll R during winding. The common touch roller 3 is supported by a support arm 5, and the support arm 5 can swing about a swing center axis 6. In addition, in order to make the common touch roller 3 approach and move away from the winding shaft, the support arm 5 is connected to a known swing driving device 7 formed of a fluid pressure cylinder. The swing driving device 7 is capable of adjusting the driving force, and can adjust the contact pressure between the common touch roller 3 and the winding roll R during sheet winding. The divided sheets S distributed to the winding shaft 2 pass through a guide roller 8 provided concentrically with the swinging central shaft 6 of the support arm 5, a guide roller 9 on the support arm 5, and a common touch roller 3, and the winding roll R. To.
[0008]
As shown in FIG. 2, a beam member 10 is supported by a support arm 5 near the common touch roller 3. The individual touch roller 4 is held by a swinging arm 11, and the swinging arm 11 is mounted on a cylindrical slide body 12 penetrating and supported by the beam member 10 so as to be swingable around the central axis of the beam member 10. It is. Since the oscillating center shaft 6 is provided in front of the winding shaft 2 in order to make the occupied space in the vertical direction as small as possible, the support arm 5 winds the common touch roller 3 in a state of being tilted as shown in the figure at the start of winding. As the winding is pushed against the upper outer peripheral surface of the winding core C on the shaft 2 and the common touch roller 3 is brought into contact with the winding roll R, the common touch is completed as shown in FIG. 1 when the winding roll is completed. The roller 3 can be moved upward.
[0009]
The swing arm 11 extends from the slide body 12 to the rear individual touch roller 4 as shown in FIG. 2, and the swing center of the swing arm 11 and the center of gravity of the individual touch roller 4 and the swing arm 11 are as follows. Separated horizontally. Therefore, a rotational force about the beam member 10 is generated in the swing arm 11 by the gravity acting on the swing arm 11 and the individual touch roller 4. In this embodiment, the direction of the rotational force is counterclockwise. Then, until the winding roll R is completed as shown in FIG. 1, the swing center of the swing arm 11 and the center of gravity of the individual touch roller 4 and the swing arm 11 can be maintained in a horizontally separated state. It has become. The swing arm 11 has such a length that the swing center, the center of the winding shaft 2 and the center of the individual touch roller 4 do not line up in a straight line. Therefore, the individual touch roller 4 supported by the swing arm 11 always receives a pressing force against the winding shaft 2 due to gravity during winding.
[0010]
As shown in FIG. 3, the winding shaft 2 is rotatably supported between a pair of machine frames 13 and can be driven to rotate by a winding drive device (not shown), and a plurality of divided sheets S are wound all at once. Each winding roll R can be formed.
[0011]
The support arms 5 are provided as a pair on both sides of the common touch roller 3, the common touch roller 3 via the bearing 14, the guide roller 8 via the bearing 15, and the guide roller via the bearing 16. Each 9 is rotatably supported. The swing center shaft 6 is fixed to a pair of support arms 5, and is attached to the machine frame 13 via a bearing 17.
[0012]
One central shaft 8 a of the guide roller 8 penetrates the swing central shaft 6 and projects to the outside of the machine frame 13, and is provided with a transmission device 18 at the tip thereof. The guide roller 8 is rotationally driven by transmitting a rotational driving force of a sheet feed driving device (not shown) via the transmission device 18 during winding. A cone pulley 19 for transmitting rotation to the common touch roller 3 is provided at the tip of the other central shaft 8 b of the guide roller 8. A reverse cone pulley 20 is provided on the central shaft 3 b of the common touch roller 3, and a belt 21 is hung on the cone pulley 19 and the cone pulley 20. The belt 21 can change the winding position by changing the position of the retainer 22 in the width direction, whereby the rotation of the cone pulley 19 can be transmitted to the cone pulley 20 with a slight speed change. Accordingly, the common touch roller 3 can be driven at a slight speed with respect to the guide roller 8 for feeding the divided sheets S.
[0013]
The individual touch rollers 4 are arranged in the width direction of the divided sheet S downstream of the common touch roller 3, the swing arms 11 are arranged on both sides of each individual touch roller 4, and the slide body 12 is each swing arm 11. It is provided for each. Further, both ends of the beam member 10 are attached to the pair of support arms 5.
[0014]
4 is a front sectional view of the slide body, FIG. 5 is a side view of the swing arm, FIG. 6 is a bottom view of the swing arm, and FIG. 7 is a side view showing a state in which the swing arm is mounted on the slide body. The slide body 12 has an annular groove 23 on the outer periphery thereof. The bottom 23 a of the groove 23 is formed to be a cylindrical surface, and the width of the groove 23 is set to a width that matches the thickness of the swing arm 11. The slide body 12 is slidably fitted on the outer periphery of the beam member 10, and has a bolt 24 for fixing the beam member 10 at a required position. The tip of the bolt 24 is connected to the beam member 10. The groove 10a is formed in the longitudinal direction. Further, the swing arm 11 is formed with a U-shaped recess 25, which fits on the bottom 23a of the groove, so as to be swingably mounted on the slide body 12 upward from its lower edge. Further, the individual touch roller 4 has a central shaft 4 a that rotatably supports the individual touch roller 4, and both ends of the central shaft 4 a are passed through holes formed in the distal end portion of the swing arm 11, and the end that penetrates the swing arm 11. A C-shaped retaining ring 4b is attached to the portion so that it does not fall off from the swing arm 11.
[0015]
In order to mount the individual touch roller 4, the slide body 12 is positioned on the beam member 10 so that the groove 25 corresponds to the swing arm 11, and then the recess 25 of the swing arm 11 as shown in FIG. 7. A portion 11a around the center of the slide body 12 is fitted into the groove 23 of the slide body 12 and covered with the bottom 23a of the groove. As a result, the swing arm 11 is hooked on the bottom 23 a of the groove and is held swingably by the slide body 12. To remove the individual touch roller 4, the swing arm 11 is lifted in the direction of arrow A.
[0016]
When a strip-like sheet having a large thickness is divided and wound by the sheet split winding device of this embodiment, a pair of swinging arms 11 holding the individual touch rollers 4 are mounted on the beam member 10 as shown in FIG. The individual touch roller 3 is prepared on the beam member 10 so as to correspond to each divided sheet S by mounting on the slide body 12 positioned at the required position. Further, the winding core C is mounted on the outer periphery of the winding shaft 2 so as to correspond to the divided sheet S, and the leading end of the divided sheet S is stopped on the outer periphery of the winding core C. Thereafter, the swing drive device 7 is operated to press the common touch roller 3 against the core C as shown in FIG. When the common touch roller 3 is pressed against the core C, the individual touch roller 4 is also placed on the outer periphery of the core C and is pressed and biased by gravity. Thereafter, the feeding device (not shown) is operated to feed the belt-like sheet S0, and the winding drive device (not shown) is operated to rotate the winding shaft 2. During winding, the common touch roller 3 is driven with an appropriate slight shift with respect to the guide roller 8 according to winding conditions, thereby applying an appropriate tension to each divided sheet S immediately before winding. When the strip-like sheet having a small unevenness is divided and wound by the sheet split winding device of this embodiment, the individual touch roller 4 can be detached from the beam member 10 together with the swing arm 11.
[0017]
According to the present invention, the weight may be attached to and detached from the swing arm using a known mounting means in order to change the pressing force of the individual touch roller as required. Further, the supporting arm that supports the common touch roller is not limited to the above-described one, and the swing center may be, for example, at the upper end, and the individual touch roller may be supported at the lower end. In addition, the individual touch roller may have a central axis fixed to the body portion, and may be rotatably supported by a bearing provided on a support arm.
[0018]
【The invention's effect】
According to the first aspect of the present invention, a large number of short individual touch rollers can be provided, and even if the contact pressure between the common touch roller and the winding roll is reduced, the contact pressure is applied to the winding roll by the individual touch roller. By adding, winding deviation of the winding roll can be prevented. In addition, since a large number of individual touch rollers can be moved toward and away from the winding axis together with the common touch roller, the winding preparation work is simplified. Therefore, even a strip-like sheet having a large uneven thickness can be divided into a large number of narrow sheets at a time and wound with good quality, and a sheet split winding device with good operability can be provided.
[0019]
According to the second aspect of the present invention, the individual touch roller can be easily mounted or removed, and the mounting structure is simplified. When the individual touch roller is not used, the swinging arm can be easily removed together with the individual touch roller so as not to interfere with the winding preparation work.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a sheet split winding device according to an embodiment of the present invention.
2 is a side view of one winding portion of the sheet split winding device shown in FIG. 1. FIG.
3 is a schematic plan view of the sheet split winding device shown in FIG. 1. FIG.
FIG. 4 is a front sectional view of a slide body.
FIG. 5 is a side view of a swing arm.
FIG. 6 is a bottom view of the swing arm.
FIG. 7 is a side view showing a state in which the swing arm is mounted on the slide body.
[Explanation of symbols]
S0 belt-like sheet S split sheet C core R take-up roll 1 slitter 2 winding shaft 3 common touch roller 4 individual touch roller 5 support arm 10 beam member 11 swing arm 12 slide body 23 groove 25 dent

Claims (2)

In a sheet split winding device that splits a strip-shaped sheet into a plurality of strips and winds the split sheet on two winding shafts. A common touch roller, a plurality of individual touch rollers arranged in the divided sheet width direction downstream of the common touch roller, a pair of support arms that support the common touch roller, and the pair of touch arms at positions close to the common touch roller. A beam member supported by the support arm, a plurality of slide bodies mounted on the beam member so as to be positioned in the longitudinal direction of the beam member, and individually swingably mounted on the slide body, A sheet split winding device comprising: a swing arm that is supported so as to be able to be pressed against a winding roll by gravity. The swing arm has a recess provided upward from the lower edge thereof, and a portion around the recess is fitted into an annular groove provided on the outer periphery of the slide body to cover the bottom of the groove. 2. The sheet split winding device according to claim 1, wherein the sheet is swingably mounted on the slide body.

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