JP5592170B2 - Web traveling direction changing method and web traveling direction changing device - Google Patents

Description

  The present invention relates to a web traveling direction changing method and an apparatus that is provided in a web traveling path and changes the web traveling direction.

  A device using a turn bar is generally used as a device for changing the running direction of a web, which is a continuous belt-like sheet material made of nonwoven fabric, woven fabric, paper, metal foil, resin film, etc. Known (for example, refer to Patent Document 1 and Patent Document 2). On the other hand, in the web traveling direction changing device using the turn bar, the turn bar does not rotate. Therefore, a frictional force is generated between the turnbar and the web wound around the turnbar. May occur, causing damage to the web or causing web shrinkage or meandering. Furthermore, this frictional force tends to generate paper dust and web additives (oil agent etc.) from the web, which may cause contamination of the apparatus and web.

  For this reason, according to the traveling direction conversion apparatus of patent document 1 or patent document 2, there is a method for changing the direction of the web while floating from the turn bar by ejecting air from a large number of air blowing holes formed on the surface of the turn bar. It has been adopted. In particular, in Patent Document 1, when the web is a printed material, the printed material is secured with a sufficient flying height so that the printed material is not soiled, and the web and the turning bar (turn bar) are prevented from contacting each other. It has been proposed to provide an air ejection nozzle on the surface of a turning bar that changes the web conveyance direction. However, according to the traveling direction conversion device of Patent Literature 1 and Patent Literature 2, it is effective for a web made of paper, metal foil, resin film, etc. that does not allow air to pass through. For webs made of woven fabric or the like, it is difficult to effectively reduce the frictional force.

  Further, Patent Document 3 discloses a web traveling direction conversion device that reduces fluctuations in tension when changing the traveling direction of a web and can stably change the direction without causing wrinkles or the like on a continuously conveyed web. As an example, there are provided four rod-shaped members, a web conveying belt that is wound around these four rod-shaped members and rotationally moved in an endless manner, and a web conveying belt driving means. There has been proposed an apparatus for changing the traveling direction of a web by bending it while being placed on the transport surface. However, according to this apparatus, there is a problem that the relationship between the web surface at the time of supply to the apparatus and at the time of discharge and the travel angle to be changed is not free, and a space is required in the transport apparatus.

  As another technique for changing the running direction of the web, a plurality of pass rollers are used, and among them, a pair of pass rollers arranged adjacent to each other in the vertical direction is arranged in a non-parallel posture so that the traveling direction of the band-shaped metal plate is predetermined. A method of converting to a direction has been proposed (see Patent Document 4). However, in this method, since the number of times of passing the web between the pass rollers is small, it is necessary to increase the angle of the adjacent pass rollers when making a large change in direction. In that case, the difference in tension generated between the left and right in the width direction becomes significant. As a result, when the upper and lower roll angles are arranged large, wrinkles may be generated on the web or the web may be damaged depending on the type of the web.

JP-A-6-345306 JP 2001-139201 A JP 2006-89208 A JP 2000-351506 A

  The present invention suppresses the frictional resistance with the traveling direction changing device when changing the traveling direction of the web that is continuously conveyed, thereby reducing web width reduction and adding paper dust or web generated from the web. The present invention relates to providing a method and an apparatus for changing the running direction of a web, which can reduce contamination of the apparatus and web by an object (such as oil).

  The present invention allows the web to travel in a bellows-like manner over a group of rolls in which a plurality of rotatable rolls are arranged in a radial manner, so that the web traveling direction can be changed between the supply position to the roll group and the discharge position. The present invention provides a method for changing the running direction of the web to be different.

  Further, the present invention provides a web traveling direction changing device that has a roll group in which a plurality of rotatable rolls are arranged radially, and is used by wrapping a web around the roll group in a bellows shape. It is.

  According to the web traveling direction changing method and the web traveling direction changing device of the present invention, the web has less frictional resistance against the running direction changing device compared to the conventional turn bar, and therefore, the web is less damaged, and It is possible to prevent paper dust, web additives (oil agent, etc.) from adhering to and contaminating the periphery of the apparatus and the web. Further, since the frictional resistance is small, it is possible to suppress the generation of static electricity, and it is possible to prevent the web being conveyed from being contaminated and to be stably conveyed. Furthermore, since the difference in tension generated between the left and right in the width direction of the web can be reduced, it is also possible to effectively prevent wrinkles on the web and damage to the web.

FIG. 1 is a schematic view showing a state in which the web traveling direction is changed by the first embodiment of the web traveling direction changing device of the present invention. FIG. 2 is a perspective view showing a state in which the traveling direction of the web is changed by the first embodiment of the web traveling direction changing device of the present invention. FIG. 3 is a schematic diagram showing a plan view of the web traveling direction changing device shown in FIG. 2. FIG. 4 is a schematic diagram showing a side view of the web traveling direction changing device shown in FIG. 2. 5A and 5B are explanatory views showing a preferred arrangement of rolls, in which FIG. 5A is a plan view of a pair of rolls adjacent in the web conveyance direction from above, and FIG. 5B is a diagram showing a web placed on the pair of rolls. It is a perspective view which shows the state over which it was spanned. FIG. 6 is a perspective view of a second embodiment of the web travel direction changing device of the present invention. FIG. 7 is a schematic diagram showing a side view of the web traveling direction changing device shown in FIG. 6. FIG. 8 is a perspective view showing another preferred example of the web traveling direction changing device.

The present invention will be described below based on preferred embodiments with reference to the drawings.
The web travel direction changing device 1 according to the first preferred embodiment of the present invention shown in FIG. 1 is a constituent material of these absorbent articles when a large number of absorbent articles such as disposable diapers and napkins are continuously formed. A sheet material such as a nonwoven fabric or a film is continuously fed from the raw roll 100 and traveled, and the traveling direction of the belt-like web 10 that is a continuous body of such a sheet material is changed to, for example, 90 degrees, 110 degrees, etc. And it is used when supplying continuously to the next process of absorbent article manufacture. In FIG. 1, a roll denoted by reference numeral 100 ′ is a spare original roll for use after the web 10 is unwound from the original roll 100.
In FIG. 1, reference numeral 5 denotes a tension control unit, which includes a dancer roll 51 for tension control and a position detection means (not shown) for the dancer roll 51. The tension control unit 5 performs tension control by adjusting the unwinding amount of the web 10 from the web roll 100 or the traveling speed of the web 10 based on the position detection of the dancer roll 51.

  As shown in FIGS. 2 to 4, the web traveling direction conversion device 1 has a group of rolls in which a plurality of rotatable rolls 20 and 30 are radially arranged when viewed in the vertical direction from above. Each roll 20, 30,... In the first embodiment has a roll axis (rotating axis) arranged horizontally, and can change the running direction of the web in a horizontal plane. Moreover, in the roll group of the web traveling direction conversion device 1, it is preferable to provide a step between the roll 20 and the roll 30, and the step between the roll groups in the first embodiment constitutes the upper roll group 2. The roll 20 and the roll 30 constituting the lower roll group 3 are caused by different positions (height positions) in the vertical direction (Z-axis direction). That is, from the roll 20 located at one end of the apparatus 1 toward the roll 30 located at the other end, the position through which the web 10 is passed is changed between the roll 20 and the lower roll group 3 constituting the upper roll group 2. When the web 10 is wound in an accordion shape while being switched between the upper side and the lower side with the roll 30 to be configured, the roll 20 adjacent to the traveling direction of the web 10 and wound around the upper peripheral surface, When the roll 30 around which the web 10 is wound around the lower peripheral surface has different positions in the same direction (for example, a position in the height direction) on the upper peripheral surface and the lower peripheral surface of the rolls 20 and 30, It can be said that the rolls 20 and 30 have a step. For example, in the case of FIG. 2, the position in the same direction is different from the position of the upper peripheral surface of the roll 30 below the upper peripheral surface of the roll 20 in the Z-axis direction. Means a state below the lower peripheral surface in the Z-axis direction. The direction from the roll 20 located at one end of the apparatus 1 to the roll 30 located at the other end is the traveling direction of the web 10.

In detail, as shown in FIG. 3, the apparatus 1 of the first embodiment has the rolls 20 and 30 arranged radially when the web travel direction conversion apparatus 1 is viewed in plan.
When XYZ coordinate axes that are orthogonal to each other are provided as shown in FIG. A plurality of rolls 30 are arranged radially on the second XY plane 3 </ b> A formed below at an arbitrary distance. The first XY plane 2 </ b> A and the second XY plane 3 </ b> A are planes on which the axial centers of the roll 20 and the roll 30 are located, respectively. The first XY plane 2A and the second XY plane 3A are parallel to each other. That is, when the web travel direction conversion device 1 is viewed from the side, each roll 20 is in the same position (height) in the side view (Z-axis direction), and each roll 30 is the same in the side view (Z-axis direction). At the position (height), the plurality of rolls 20 and the plurality of rolls 30 have different positions (heights) in the Z direction. By arranging the roll 20 and the roll 30 in this way, the strain applied to the web can be made uniform, the web is less likely to wrinkle, and the positions of the plurality of rolls 20 and the plurality of rolls 30 are adjusted together. The advantageous effect that it is easy is produced. 1 to 4 show examples in which three rolls 20 and 30 are provided, respectively, the number of rolls 20 and 30 is not particularly limited.

  In the present embodiment, the plan view is a state in which the web travel direction conversion device 1 is observed in the vertical direction from above, and indicates an XY plane that is a horizontal plane. Further, the side view is a state in which the web travel direction conversion device 1 is observed from the side in the horizontal direction, and is an observation from a direction orthogonal to the Z axis that is the vertical axis.

A plurality of rolls 20 and rolls 30 form roll groups 2 and 3, respectively. Specifically, the roll group of the apparatus 1 is composed of an upper roll group 2 that is in an upper position in the vertical direction (Z-axis direction) and a lower roll group 3 that is in a lower position than the upper roll group 2 in the roll group. Has been. In the upper roll group 2, the lower surface of the web 10 is in contact with the upper peripheral surface of each roll 20, and the lower roll group 3 is in the lower position in the roll group of the apparatus 1, and the web 10 is disposed on the lower peripheral surface of each roll 30. The upper surface of touches. The upper surface of the web 10 is a surface in the same direction as the floor surface on which the web traveling direction converting device 1 is installed, and the lower surface of the web 10 is a surface facing the floor surface on which the web traveling direction converting device 1 is installed. .
From the viewpoint of smooth direction change of the web 10, it is more preferable that the upper roll group 2 and the lower roll group 3 have a step in the height direction and are separated from each other. “Separated” means that the lower peripheral surface of the roll 20 is located above the lower peripheral surface of the roll 20 and the upper peripheral surface of the roll 30, and the lower peripheral surface of the roll 20 and the upper peripheral surface of the roll 30 Are different in position (height position), for example, have a distance in the Z-axis direction as shown in FIG.
From the same viewpoint, the roll group distance D (see FIG. 4) is preferably 0.25 to 20 times the web width, more preferably 0.5 to 15 times, especially 1 It is particularly preferably 0 to 10 times.

  In the apparatus 1 of the first embodiment, each roll 20 of the upper roll group 2 and each roll 30 of the lower roll group 3 are in the same position when the two roll groups 2 and 3 are overlapped from above and viewed in plan. not exist. Each roll 20 is at the same height (position in the Z-axis direction) in a side view, and each roll 30 is also at the same height in a side view.

  The roll 20 and the roll 30 are rotatable rolls, and preferably are free rolls that do not have a rotational drive source. Each of the rolls 20 and 30 is connected to the shaft core by a bearing so as to be rotatable. The rolls 20 and 30 preferably have a small rotational moment, and therefore are preferably formed of a lightweight material such as an aluminum alloy, resin, or carbon graphite.

  The roll cores 20 and 30 (not shown) are fixed to two fan-like plates (not shown) each having one end parallel to the XY plane, and the two plates are parallel to the Z-axis direction. It is fixed to a book fixing bar (not shown). The fixing bar is fixed to the conveyance process (conveyance path) of the web 10 by a jig or the like (not shown), and the device 1 is incorporated into the absorbent article manufacturing process. The two plates can move along the fixing bar, and the height of the upper roll group 2 and the lower roll group 3 in the Z-axis direction can be adjusted.

The roll 20 is fixed radially to the plate, but the plurality of rolls 20 are fixed so that the angle on the XY plane can be adjusted around the fixing bar, and the roll 30 is also another plate. It is fixed to. In addition, after adjusting positions, such as height and an angle, each roll 20,30 does not shift | deviate the position during web conveyance. In the apparatus 1, the plurality of rolls 20 are arranged radially at the same angle, and the plurality of rolls 30 are also arranged radially at the same angle. By arrange | positioning radially, the roll 20 and the roll 30 each comprise a fan-shaped plane. In the upper roll group 2 and the lower roll group 3, the extension lines of the roll axes of the rolls 20 and 30 intersect with the fixing bars, that is, in a relationship intersecting at one line L1 (see FIG. 2) orthogonal to the roll axis. And the extension line of the roll axis intersects at one point (point P1 for the roll 20 and point P2 for the roll 30 and see FIG. 2), and angle adjustment between the rolls can be facilitated. Accordingly, the straight line L1 connecting the intersection point P1 of the extension line of the axis of each roll constituting the upper roll group 2 and the intersection point P2 of the extension line of the axis of each roll constituting the lower roll group 3 is It is orthogonal to the first XY plane 2A and the second XY plane 3A. By configuring the device 1 in this way, there is an advantage that the device 1 can be made compact.
Also, when the two roll groups 2 and 3 are overlapped from above and viewed in plan, the angle between the upper and lower rolls is preferably equal, and the two fan-shaped plates are fixed with respect to the circumferential direction of the fixing bar. A key or the like may be positioned so that the installation angle can be easily determined.

  The roll group of the apparatus 1 includes two rolls 20A and 30A, which are the outermost rolls in a plan view, which are a first roll at a web supply position to the apparatus 1 and a final roll at a discharge position to the next process. The direction change angle is determined. The angle θ (see FIG. 3) of the two outermost rolls 20A and 30A in plan view is not particularly limited because it depends on a desired change angle, but considering the size and efficiency of the apparatus 1, it is 45 to 135 degrees. Is preferable, and 80 to 100 degrees is particularly preferable.

  As shown in FIG. 3, when one roll 20 and the next roll 30 that are adjacent to each other in the conveyance direction of the web 10 are provided so that their rotation axes form an angle, The conveyance distance from one roll 20 to the next roll 30 is different between the one end side and the other end side. Therefore, although distortion arises in the web 10, as shown to Fig.5 (a), when the apparatus 1 and a roll group are planarly viewed from the top, one roll 20 which comprises the upper roll group 2, and one The one roll 30 constituting the lower roll group 3 on which the web is stretched next to the roll 20 is arranged so as to partially overlap, so that one end side and the other end side in the width direction of the web 10 The difference in the transport distance from one roll 20 to the next roll 30 [distance between a1 and b1 and distance between a2 and b2, see FIG. 5B] can be reduced. As a result, the strain applied to the web 10 approaches the left and right evenly, and the strain generated in the web can be reduced. If the strain is kept small, generation of wrinkles can be prevented. In particular, as shown in FIG. 5A, when the roll peripheral surfaces overlap each other at the center in the axial direction of the roll, the strain can be minimized. From the same viewpoint, the straight lines L2 to L4 in FIG. 5 extend in the vertical direction (Z-axis direction in FIG. 2). The angle θ1 [see FIG. 5 (a)] formed by the rotation axis of one roll 20 and the next roll 30 is preferably larger than 0 ° and not larger than 30 °, and particularly preferably 5 ° to 15 °. preferable. On the other hand, in the technique described in Patent Document 4 described above, since the number of times the web is passed between the pass rollers is small, it is necessary to increase the angle of the adjacent pass rollers when making a large change in direction. . This causes the difference in tension generated between the right and left sides of the web in the width direction to increase. In this document, since a metal plate is used as the web, the difference in tension in the width direction of the web may not be a problem, but when a flexible material such as nonwoven fabric or paper is used as the web, The web may wrinkle or damage the web.

  As shown in FIG. 5B, since the web is twisted between the two rolls, the length of the web between the two rolls differs between the central portion and the side portion of the roll. Therefore, wrinkles may occur in the case of a web that is easily distorted. In that case, in order to prevent wrinkling, a roll having a spindle-shaped (taiko-shaped) web winding surface in the roll cross section may be used to reduce the difference in length.

  Next, a web travel direction changing device 1 ′ according to a second embodiment of the present invention will be described with reference to FIGS. 6 and 7. Components different from those of the web travel direction changing device 1 of the first embodiment described above will be mainly described, and similar components will be denoted by the same reference numerals and description thereof will be omitted. For the components that are not particularly described, the description of the web travel direction changing device 1 of the first embodiment is appropriately applied. 6 is a perspective view of the web traveling direction changing device 1 ′ viewed obliquely from above, and FIG. 7 is a corresponding view of FIG. 4.

  In the apparatus 1 ′, as shown in FIG. 6, the rolls 20 and 30 are fixed to the fixing bar 4. Each roll 20 constituting the upper roll group 2 is attached to the fixing bar 4 at equal intervals in the height direction, and the roll 30 constituting the lower roll group 3 is fixed below the upper roll group 2. The bars 4 are attached at equal intervals in the height direction. That is, each roll 20 and each roll 30 have different positions (heights) along the Z-axis direction (vertical direction). Each of the rolls 20 and 30 has a roll axis (rotating axis) arranged perpendicular to the fixing bar 4, and the height of the rolls 20 and 30 can be adjusted with respect to the fixing bar 4.

  The rolls 20 and 30 are attached so as to be able to rotate and move with respect to a plane orthogonal to the fixing bar 4, and can be arranged radially extending around the fixing bar 4. In the apparatus 1 ′, the roll 20 </ b> A and the roll 20 </ b> B are the outermost two rolls in plan view.

  According to this apparatus 1 ′, the heights of the rolls 20 and 30 are gradually lowered in the running direction of the web 10 as shown in FIG. 7, and the web roll is disposed at a high position. When the process after changing the traveling direction by 1 ′ is at a low position, it is easy to secure the space of the apparatus.

Next, a preferred embodiment of the web traveling direction changing method of the present invention will be described by taking the above-described apparatus 1 of the first embodiment as an example.
As shown in FIG. 1, the web 10 in a transported state travels in a bellows-like manner over a roll group composed of a plurality of rotatable rolls, so that the supply position A and the discharge position B to the roll group are The direction of web travel has been changed. The web 10 is unwound from the original fabric 100, and the web 10 that has been transported is changed in traveling direction by about 90 degrees by the apparatus 1, and is transported to the next process.

  As shown in FIG. 2, the web 10 is supplied to the apparatus 1 and is supplied to the upper surface of the roll 20 so that the traveling direction of the web is substantially orthogonal to the axial direction of the first roll 20. Next, the web 10 is advanced below the apparatus 1 and is passed over the roll 30 of the lower roll group 30. In the roll 30, a web is wound around the lower peripheral surface. Then, the web 10 is wound around the upper peripheral surface of the roll 20 of the upper roll group 2, and is wound around the roll in a bellows shape in the roll group along the traveling direction of the web. In addition, since each roll of the apparatus 1 does not have a rotation drive source, the web 10 travels and is transported by feeding the original fabric and driving other feed rolls (not shown).

  The web 10 is twisted between the roll 20 and the roll 30 adjacent to each other in the traveling direction of the web 10 or between the roll 30 and the roll 20. By being twisted, the web 10 stretched over the roll 20 (or the roll 30) has a traveling direction of the web 10 approximately the axial direction of the roll 30 (or the roll 20) that is spanned next in the traveling direction. It can be crossed so as to be orthogonal. The degree to which the web 10 is twisted is changed by the angle between the adjacent roll 20 and roll 30. From the viewpoint of the running stability of the web 10, the preferred angle between the adjacent roll 20 and roll 30 (the aforementioned angle θ1) is 30 degrees or less, more preferably 15 degrees or less. The term “substantially orthogonal” does not need to be exactly 90 degrees with respect to the axial direction, and allows an intersection at 80 to 100 degrees.

  The traveling direction of the web 10 gradually changes as the web 10 travels on a roll group including the roll 20 of the upper roll group 2 and the roll 30 of the lower roll group 3 whose angles are gradually changed radially. Then, when the roll at the discharge position is exceeded, the traveling direction is greatly changed at the supply position to the apparatus 1 and the discharge position. In addition, since the web 10 has a difference between the front surface and the back surface, the front and back surfaces of the web 10 after feeding the web are not changed because the top and bottom surfaces of the web 10 are not interchanged between the supply position to the roll group and the discharge position. There is also an advantage that web conveyance can be performed without concern.

  Although there is no restriction | limiting in particular in the web 10, When using this invention for the manufacturing process of an absorbent article, it is a constituent material for absorbent articles, and paper, a nonwoven fabric, a plastic sheet etc. are mentioned. The web 10 is not limited to a single layer, and a composite material obtained by laminating a plurality of sheets or joining in the width direction may be used. In particular, when a flexible material such as a nonwoven fabric or paper is used as the web 10, the effect of the present invention becomes remarkable. In particular, when a nonwoven fabric is used as the web 10, the effect of the present invention becomes more remarkable. The reason for this is as follows. Various oil agents including a hydrophilizing agent are generally applied to the nonwoven fabric. When such a nonwoven fabric is run and its direction is changed, if the friction between the nonwoven fabric and the roll is large, the oil agent adheres to and accumulates on the roll and may cause foreign matter or hinder the stable running of the web. Often there is. On the other hand, if the running direction of the nonwoven fabric is changed according to the present invention, the friction between the nonwoven fabric and the roll is reduced, so that the above-described problem is less likely to occur.

  According to the preferred embodiment of the traveling direction changing device 1 or 1 ′ or the web traveling direction changing method of the present invention, the web 10 has a lower frictional resistance against the traveling direction changing device than the conventional turn bar. In addition, it is possible to prevent paper dust generated from the web 10 and web additives (oil agent, etc.) from adhering to the periphery of the apparatus or the web 10 and being contaminated. In addition, since the frictional resistance is small, the generation of static electricity can be suppressed, contamination of the web 10 being conveyed can be prevented, and stable conveyance can be achieved.

  Further, since the web 10 can run while being stretched so as to be substantially orthogonal to the axial direction of the rolls 20 and 30, the web 10 can have a low frictional resistance with respect to the rolls 20 and 30, and can meander. Can be prevented.

  Moreover, in the web traveling direction changing device 1 of the first embodiment, the roll group is divided into the roll 20 of the upper roll group 2 and the roll 30 of the lower roll group 3, so that the height adjustment is easy. It is easy to change the height according to web characteristics and installation space constraints.

As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment.
For example, each roll is not limited to being horizontal, and a group of rolls may be arranged on the YZ plane as shown in FIG. 8 to turn the web 10 from the lateral direction to the upward direction. In FIG. 8, the Z direction is parallel to the vertical direction. In the embodiment shown in FIG. 8, a line L1 ′ corresponding to the line L1 in FIG. 2 is arranged horizontally, and the web conveyed horizontally is composed of the upper roll group 2 and the lower roll group 3. After the conveyance direction is changed by a plurality of rolls, the sheet is led upward in the vertical direction.

2 and 8 can be used in a state in which the straight lines L1 and L1 ′ are directed in an arbitrary direction in the three-dimensional space.
The roll group may be fixed, or one of them may be movable in the vertical direction. In this case, it functions as an accumulator for web accumulation and a dancer roll for web transport tension control.
Further, the rolls of the upper roll group 2 or the lower roll group 3 may be made to run with air holes and the web 10 floating.
The upper roll group 2 may be composed of two rolls or four or more rolls, and the lower roll group 3 may be composed of two rolls or four or more rolls. The total number of rotatable rolls constituting the traveling direction changing device is preferably 4 or more, more preferably 5 or more, and particularly preferably 6 or more. The upper limit is not particularly limited, but is 20 for example.

  In the preferred embodiment, the roll 20 and the roll 30 are each stretched in a bellows shape in the vertical direction for each roll. However, the roll 20 and the roll 30 may be wound every other roll. Further, the web may be continuously hung on a plurality of continuous rolls 20 or 30, for example, two rolls 20. When it hangs on a plurality of continuous rolls, it is preferable to adjust the angle and interval so that the rolls are close to parallel. However, it is preferable that the roll 20 and the roll 30 are each laid in a bellows shape in the vertical direction for each roll from the viewpoint that the strain applied to the web is made uniform and wrinkles are less likely to occur.

  In the apparatus 1, the web 10 is supplied to the roll 20 of the upper roll group 2 and discharged from the roll 30 of the lower roll group 3. However, depending on the layout of the apparatus, the web 10 is supplied to the roll 30 of the lower roll group 3, for example. Or may be discharged from the roll 20 of the upper roll group 2. The supply position of the web to the apparatus 1 and the discharge position of the web from the apparatus can be freely designed.

  Moreover, the traveling direction change apparatus of a web can also be used for various uses, such as a surgical garment and a cleaning sheet, besides the use of the web which comprises an absorbent article. Moreover, it can be used not only in the process of manufacturing these articles but also in processes such as printing and drying.

1, 1 'Web traveling direction changing device 10 Web 2 Upper roll group 20 Upper roll group roll 3 Lower roll group 30 Lower roll group roll

Claims (9)

A web of webs in which the web travel direction varies depending on the supply position to the roll group and the discharge position by running the web in a bellows shape over a roll group in which a plurality of rotatable rolls are arranged radially. A method for changing the direction of travel,
The roll group is located at an upper position in the roll group and the upper roll group in which the lower surface of the web is in contact with the upper circumferential surface of the roll, and the lower roll surface is located below the upper roll group in the roll group. It is divided into a lower roll group that the upper surface of the web contacts, and the upper roll group and the lower roll group are separated in the height direction,
Plate for fixing one end of the axis of each roll is fixed to the fixed bar, said plate is movable along the fixed bar, the height of the lower rolls and the upper rolls Adjustable,
The rolls constituting the upper roll group and the rolls constituting the lower roll group are respectively attached at equal intervals in the height direction of the fixing bar and gradually lowered in the web traveling direction. Travel direction change method.   The web traveling direction changing method according to claim 1, wherein the upper and lower surfaces of the web are not interchanged between a supply position to the roll group and a discharge position.   The web running direction changing method according to claim 1 or 2, wherein the web is stretched over a group of rolls so that the running direction of the web is substantially orthogonal to the axial direction of each roll.   The web traveling direction changing method according to claim 1, wherein the web is twisted between rolls adjacent to each other in the web traveling direction.   The said web is stretched over the said roll group so that it may advance, changing the surface contact | abutted with a roll among the two surfaces sequentially with an upper surface and a lower surface. How to change the direction of web travel.   The method according to claim 1, wherein the web is made of non-woven fabric or paper. A web traveling direction changing device that has a roll group in which a plurality of rotatable rolls are arranged radially, and is used by wrapping a web around the roll group in a bellows shape,
The roll group is located at an upper position in the roll group and the upper roll group in which the lower surface of the web is in contact with the upper circumferential surface of the roll, and the lower roll surface is located below the upper roll group in the roll group. It is divided into a lower roll group that the upper surface of the web contacts, and the upper roll group and the lower roll group are separated in the height direction,
Plate for fixing one end of the axis of each roll is fixed to the fixed bar, said plate is movable along the fixed bar, the height of the lower rolls and the upper rolls Adjustable ,
The rolls constituting the upper roll group and the rolls constituting the lower roll group are respectively attached at equal intervals in the height direction of the fixing bar and gradually lowered in the web traveling direction . Travel direction change device. The rolls are traveling direction changing apparatus according to claim 7 Symbol mounting of the web two angular rolls outermost of said group of rolls arranged radially is 45 to 135 degrees. The web travel direction changing device according to claim 7 or 8 , wherein each roll of the roll group is a free roll having no rotation drive source.

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