JP2016210565A - Winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently stretch winkles in a sheet material.SOLUTION: A winding device 1 includes a roller around which a belt-like sheet material 10 is wound, and which stretches winkles while, by rotating, delivering the sheet material 10 in the rotation direction. It includes: a columnar roller body 4; and a spiral projection 5 extending in a spiral manner in an axial direction of the roller body 4 by projecting from the roller body 4. The spiral direction 5 includes: a first projection 6 extending in a first spiral direction R1 toward one end 4a side from a central part 4c in the axial direction of the roller body 4; and a second projection 7 extending in a second spiral direction R2 in the opposite direction to the first spiral direction R1 toward the other end 4b side from the central part 4c.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a sheet material winding device.

  Conventionally, as an apparatus for stretching wrinkles formed in a sheet material, for example, an apparatus having a pair of heatable plate-like materials is known (see Patent Document 1 below). In this apparatus, wrinkles can be stretched by sandwiching a sheet material between heated plate-like materials and heating and pressing the sheet material. However, such a device has a problem that it cannot be used for a sheet material having low heat resistance.

  Further, as a device for stretching wrinkles without heating a sheet material, for example, a device having a pair of rollers is known (see Patent Document 2 below). However, in this apparatus, the specific configuration of the roller is not clarified.

JP 07-277563 A Japanese Patent Laid-Open No. 08-151025

  The present invention has been devised in view of the above problems, and its main object is to provide a winding device capable of sufficiently extending wrinkles of a sheet material on the basis of improving the surface shape of a roller. It is said.

  The present invention is a winding device comprising a roller for stretching a wrinkle while a belt-like sheet material is wound and rotated to feed the sheet material in the direction of rotation, the roller being A roller body having a columnar shape, and a spiral protrusion protruding from the roller body and extending in a spiral shape in the axial direction of the roller body, the spiral protrusion extending from a central portion in the axial direction of the roller body toward one end side. A first protrusion extending in the first spiral direction, and a second protrusion extending in the second spiral direction opposite to the first spiral direction from the central portion toward the other end side, Said 1st protrusion and said 2nd protrusion contact the said sheet material in the direction which moves toward the both outer sides of the width direction from the center part of the said sheet material, It is characterized by the above-mentioned.

  In the winding device according to the present invention, it is desirable that the spiral pitch of the spiral protrusion is 10 to 100 mm.

  In the winding device according to the present invention, it is preferable that the height of the spiral protrusion from the roller body is 2 to 10 mm.

  In the winding device according to the present invention, it is desirable that the first protrusion and the second protrusion are connected at the center portion.

  In the winding device according to the present invention, it is desirable that a portion of the spiral projection in contact with the sheet material in a cross section perpendicular to the longitudinal direction includes an arc surface having a center on the spiral projection side.

  In the winding device according to the present invention, it is desirable that the arc surface has a curvature radius of 1 to 3 mm.

  The present invention is a winding device provided with a roller for stretching a wrinkle while feeding a sheet material in the direction of rotation by rotating the belt-like sheet material. The roller includes a roller body having a cylindrical shape, and a spiral protrusion protruding from the roller body and extending in a spiral shape in the axial direction of the roller body. The spiral protrusion has a first protrusion extending in the first spiral direction from the central portion in the axial direction of the roller body toward the one end side, and a direction opposite to the first spiral direction from the central portion toward the other end side. And a second protrusion extending in the second spiral direction. The first protrusion and the second protrusion are in contact with the sheet material in a direction of moving from the center portion of the sheet material toward both outer sides in the width direction. Such a roller can move the spiral protrusion to both outer sides in the width direction of the sheet material while pressing the spiral protrusion against the surface of the wound sheet material. As a result, the sheet material is continuously pulled in the width direction, and as a result, wrinkles are stretched. Therefore, the winding device of the present invention can sufficiently stretch the wrinkles.

It is a perspective view of an example of the winding device of the present invention. It is a fragmentary sectional view of a winding device. (A) is the front view of the roller of FIG. 1, (b) is the elements on larger scale of (a). It is a front view of the roller of other embodiments. (A) And (b) is a front view of the roller of other embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a winding device 1 (hereinafter, simply referred to as “device 1”) according to the present embodiment. As shown in FIG. 1, the apparatus 1 is configured to wind up the sheet material 10 while stretching wrinkles formed in the belt-shaped sheet material 10. For example, the apparatus 1 includes a conveying unit 12 for conveying the sheet material 10; A winding shaft 11 for winding the conveyed sheet material 10 and a roller 2 disposed between the conveying means 12 and the winding shaft 11 and for extending wrinkles of the sheet material 10 are included.

  Although it will not specifically limit if the sheet material 10 is a material in which a wrinkle is formed, For example, sheet materials, such as resin and a fiber, are mentioned. The sheet material 10 of the present embodiment is exemplified by a resin liner for preventing the rubber sheets from sticking to each other when winding up an unvulcanized rubber sheet that is a tire constituent member. Further, the width wa and the thickness ta of the sheet material 10 are not particularly limited.

  The take-up shaft 11 has, for example, a cylindrical shape having an outer peripheral surface 11a for taking up the sheet material 10, and is rotatably supported by a frame (not shown), for example. Further, the winding shaft 11 is provided so as to be rotationally driven by a driving means such as a motor, for example.

  The conveyance means 12 is configured in a belt conveyor shape including, for example, a plurality of conveyance rollers 12a that are rotatably supported and a conveyance belt 12b that can be circulated by the conveyance rollers 12a. The conveyance means 12 is not limited to such an aspect, For example, what was comprised only with the conveyance roller 12a may be sufficient.

  The roller 2 for extending the wrinkle is provided between the conveying means 12 and the winding shaft 11. FIG. 2 shows a partial cross-sectional view of the winding device 1. As shown in FIGS. 1 and 2, the apparatus 1 of the present embodiment includes a first roller 2 </ b> A on the upstream side in the conveyance direction of the sheet material 10 and a second roller 2 </ b> B disposed on the downstream side in the conveyance direction. Yes. The first roller 2A is arranged so that, for example, a first surface (lower surface in the drawing) 10h of the sheet material 10 is wound around, and the second roller 2B is arranged on the second surface (in the drawing, the sheet material 10). The upper surface 10i is wound around. As a result, a large contact portion K between the sheet material 10 and the roller 2 is ensured, so that the conveying force of the sheet material 10 can be effectively increased.

  Each roller 2A, 2B is supported so as to be rotatable about its axis, and driving means (not shown) such as an electric motor is linked to at least one of the rollers 2A, 2B. Thereby, the roller 2A or 2B can apply tension to the wound sheet material 10 to increase the contact pressure between the sheet material 10 and the roller 2.

  FIG. 3A shows a front view of the roller 2. As shown in FIG. 3A, each of the rollers 2 </ b> A and 2 </ b> B of the present embodiment includes a cylindrical roller body 4, and a spiral protrusion 5 that protrudes from the roller body 4 and extends spirally in the axial direction of the roller body 4. Including. In addition, although not shown in figure, the support part supported by the bearing may be provided in the both ends of the roller main body 4, for example.

  In this embodiment, the roller body 4 extends in the axial direction with substantially the same outer diameter d. The outer diameter d is preferably 50 to 120 mm.

  The spiral protrusion 5 includes a first protrusion 6 and a second protrusion 7.

  The first protrusion 6 extends in the first spiral direction R1 from the central portion 4c in the axial direction of the roller body 4 toward the one end 4a side (left side in the drawing). The second protrusion 7 extends from the central portion 4c toward the other end 4b side (right side in the drawing) in the second spiral direction R2 opposite to the first spiral direction R1. The first spiral direction R1 is opposite to the rotation direction R of the roller body 4 from the central portion 4c of the roller body 4 toward the one end 4a side. The second spiral direction R2 is opposite to the rotation direction R of the roller body 4 from the central part 4c of the roller body 4 toward the other end 4b.

  Therefore, by rotating the rollers 2A and 2B, the first and second ridges 6 and 7 are moved from the central portion 10a of the sheet material 10 toward both outer sides 10b and 10b (shown in FIG. 1) in the width direction. The sheet material 10 is brought into contact with the moving direction. Due to the contact between the spiral protrusion 5 and the sheet material 10, the sheet material 10 is pulled to both outer sides 10 b and 10 b in the width direction, and the wrinkles are extended.

  In particular, in the present embodiment, the first surface 10h of the sheet material 10 is stretched by the first roller 2A, and the second surface 10i of the sheet material 10 is stretched by the second roller 2B. The wrinkles of the material 10 can be stretched. In addition, since the first roller 2A and the second roller 2B are provided so as to be displaced in the conveying direction of the sheet material 10, the tensile forces applied to the sheet material 10 from the rollers 2A and 2B do not interfere with each other. . Therefore, it is possible to effectively prevent the sheet material 10 from forming new wrinkles and wrinkles while the sheet material 10 is being wrinkled.

  The height h of the spiral projection 5 from the roller body 4 is preferably in the range of 2 to 10 mm. When the height h is less than 2 mm, the wrinkles of the sheet material 10 cannot be sufficiently extended. On the other hand, when the height h exceeds 10 mm, only the sheet material 10 and the spiral protrusion 5 come into contact with each other, the contact pressure between them increases, and the sheet material 10 may be damaged. That is, it is desirable that the rollers 2 </ b> A and 2 </ b> B contact not only the spiral protrusion 5 but also the roller body 4 with the sheet material 10. Thereby, the damage of the sheet material 10 can be prevented.

  As shown in FIG. 3B, the spiral protrusion 5 has a portion 5 a that contacts the sheet material 10 and a portion 5 b that does not contact the sheet material 10 in a cross section perpendicular to the longitudinal direction. In the present embodiment, the contacting portion 5 a is provided at the central portion in the width direction of the spiral protrusion 5. The non-contacting part 5b is disposed on both sides of the contacting part 5a.

  The portion 5 a that contacts the sheet material 10 of the present embodiment is formed by an arcuate surface 15 having a center on the spiral protrusion 5 side. Thereby, the sheet material 10 can be further prevented from being damaged. In the present embodiment, the arc surface 15 is formed by an arc having a single radius of curvature. However, the contacting portion 5a is not limited to such an aspect, and for example, an aspect in which an arc surface having a small curvature radius is provided on both sides of an arc surface having a large curvature radius (not shown) may be used.

  Such a circular arc surface 15 preferably has a curvature radius r of 1 mm or more. When the curvature radius r is less than 1 mm, the damage prevention effect of the sheet material 10 may be reduced. Although not particularly limited, the radius of curvature r is preferably 7 mm or less, more preferably 3 mm or less in order to effectively exhibit the above-described action.

  In the present embodiment, the non-contact portion 5b is formed by an arc having a radius of curvature larger than the radius of curvature r of the portion in contact. In addition, the part 5b which does not contact is not limited to such an aspect, For example, you may form in the same circular arc surface as the linear surface or the said circular arc surface 15 (illustration omitted).

  The spiral protrusion 5 desirably has a spiral pitch P of 10 to 100 mm. When the helical pitch P is less than 10 mm, the tensile force applied to the sheet material 10 becomes small, and the wrinkle may not be sufficiently extended. When the helical pitch P exceeds 100 mm, the tensile force becomes excessively large, and the sheet material 10 may greatly extend in the width direction.

  The spiral protrusion 5 preferably has a width wb of 5 to 20% of the spiral pitch P. When the width wb of the spiral protrusion 5 is less than 5% of the spiral pitch P, the contact pressure by the spiral protrusion 5 becomes excessively large, and wrinkles are formed on the sheet material 10, and the sheet material 10 may be excessively extended. . When the width wb of the spiral protrusion 5 exceeds 20% of the spiral pitch P, the contact pressure by the spiral protrusion 5 becomes small, so that the tensile force may be reduced.

  It is desirable that the first ridge 6 and the second ridge 7 are connected at the central portion 4c. Such a spiral protrusion 5 can surely press the central portion of the sheet material 10 in the width direction, and can apply a uniform contact pressure over the width direction of the roller body 4.

  The axial outer end 6e of the first ridge 6 and the axial outer end 7e of the second ridge 7 are preferably provided outside the sheet material 10 in the width direction. Thereby, since a tensile force can be applied uniformly over the entire width of the sheet material 10, wrinkles can be further extended.

  In the present embodiment, one first protrusion 6 and two second protrusions 7 are provided. However, the 1st protrusion 6 and the 2nd protrusion 7 are not limited to such an aspect, A plurality may be provided in the range which exhibits the above-mentioned effect. In FIG. 4, the first protrusion 6 is formed of two pieces having one first protrusion 6A and the other first protrusion 6B adjacent to the first protrusion 6A. Yes. The second protrusion 7 is also formed of two pieces having one second protrusion 7A and the other second protrusion 7B adjacent to the second protrusion 7A.

  5 (a) and 5 (b) show a roller 2 having a spiral protrusion 5 of still another embodiment. Since the roller 2 shown in FIGS. 5A and 5B has the same configuration as the roller 2 of FIG. 3A except for the shape of the spiral protrusion 5, the description thereof is omitted.

  As shown in FIG. 5A, in the roller 2 of this embodiment, the spiral pitch P of the spiral protrusion 5 gradually increases from the central portion 4c of the roller body 4 toward both ends 4a and 4b. Such a roller 2 gradually increases the tensile force from the central portion 10a of the sheet material 10 toward both outer sides 10b and 10b. Therefore, the wrinkles of the sheet material 10 can be effectively extended.

  As shown in FIG. 5B, in the roller 2 of this embodiment, the helical pitch P of the helical protrusion 5 gradually decreases from the central portion 4c of the roller body 4 toward both ends 4a and 4b. Such a roller 2 gradually reduces the tensile force from the central portion 10a of the sheet material 10 toward both outer sides 10b and 10b. Accordingly, since the sheet material 10 is prevented from extending in the width direction, the wrinkles of the sheet material 10 can be stretched and the width wa of the sheet material 10 can be accurately maintained.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention can be changed and implemented in various aspects, without being limited to the said embodiment.

The winding device having the basic structure of FIG. 1 having the rollers described in the specifications of Table 1 was used, and the appearance of the sheet material was confirmed. Common specifications and test methods are as follows.
<Sheet material>
Width wa x thickness ta: 320 x 0.05 (mm)
Resin sheet (material): Polyethylene terephthalate (PET)
<Roller body>
Outer diameter d: 60 (mm)
<Spiral projection>
Spiral pitch P x width (wb): 25 (mm) x 3 (mm)

<Wrinkle stretching performance>
The number of wrinkles in the sheet material was measured before and after passing through the roller, and the ratio was calculated. The result is expressed as a percentage, and the smaller the value, the better.

  As a result of the test, it can be confirmed that the apparatus of the example has improved wrinkle stretching performance compared to the apparatus of the comparative example. In the sheet material of Comparative Example 2, wrinkles including scratches are formed. In addition, a test was performed using a winding device in which the helical pitch and width were changed within a preferable range, and the same result was obtained.

DESCRIPTION OF SYMBOLS 1 Winding device 2 Roller 4 Roller main body 5 Spiral protrusion 6 1st protrusion 7 2nd protrusion 10 Sheet material R1 1st spiral direction R2 2nd spiral direction

Claims (6)

A winding device comprising a roller for stretching a wrinkle while a belt-shaped sheet material is wound and rotating by feeding the sheet material in the direction of rotation,
The roller includes a roller body having a columnar shape, and a spiral protrusion protruding from the roller body and extending in a spiral shape in the axial direction of the roller body,
The spiral protrusion includes a first protrusion extending in a first spiral direction from the axial center portion of the roller body toward the one end side, and the first spiral direction extending from the center portion toward the other end side. Includes a second ridge extending in the opposite second spiral direction;
The winding device, wherein the first protrusion and the second protrusion are in contact with the sheet material in a direction in which the first protrusion and the second protrusion move toward both outer sides in the width direction from the center portion of the sheet material.   The winding device according to claim 1, wherein the spiral pitch of the spiral protrusion is 10 to 100 mm.   The winding device according to claim 1 or 2, wherein a height of the spiral protrusion from the roller body is 2 to 10 mm.   The winding device according to claim 1 or 2, wherein the first protrusion and the second protrusion are connected at the central portion.   The winding device according to any one of claims 1 to 4, wherein a portion of the spiral projection in contact with the sheet material includes an arc surface having a center on the spiral projection side in a cross section orthogonal to the longitudinal direction.   The winding device according to claim 5, wherein the arc surface has a curvature radius of 1 mm or more.

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