JP2010036406A - Strip member winding device and winding method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily wind a rubber ribbon 33 at a high-precision winding position with a high-precision winding pitch, even if the outer surface of an object 19, around which the rubber ribbon is wound, is uneven. <P>SOLUTION: A part of an edge 37c formed at the boundary between an edge face 37a and outer circumferential surface 37b of a wrapping roller 37 is removed to form an inclined surface 45 circumferentially extending at the boundary. Therefore, even when the outer surface of the object 19 around which the rubber ribbon is wound is uneven, the inclined surface 45 climbs onto the uneven surface to make a smooth passage over the uneven surface, and thus the interference of the uneven surface with the wound roller 37 can be effectively inhibited. As a result, the transfer velocity of the wound roller 37 is kept almost uniform, and the rubber ribbon 33 is easily wound around the object 19 at the high-precision wrapping position with the high-precision winding pitch. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

    The present invention relates to a belt-like member winding apparatus and a winding method for winding a narrow belt-like member around a wound body while spirally pressing the belt-like member with a winding roller.

As a conventional belt-shaped member winding device, for example, a device described in Patent Document 1 below is known.
JP 2008-126608 A

  In this structure, a narrow belt-shaped member supplied toward a rotating body to be wound is brought into close contact with the outer peripheral surface of the winding roller, and in the width direction of the belt-shaped member while rotating the winding roller. By moving the belt-shaped member, the belt-shaped member is pressed against the body to be wound and spirally wound around the member, and a pair formed at the boundary between the axial end surfaces of the winding roller and the outer peripheral surface. Both of these edges are scraped lightly enough to avoid injury when touched by an operator, and are virtually equivalent to an edge that intersects at 90 degrees.

    However, when the belt-like member is wound using such a conventional winding device, if there is unevenness on the outer surface of the wound body around which the belt-like member is wound, the moving side edge of the winding roller is The movement speed of the winding roller changes by interfering with the above-described unevenness, for example, and the winding pitch of the belt-like member may be disturbed or the winding position may be shifted as a result. There was a problem.

  The present invention provides a winding device and a winding method for a belt-shaped member that can easily wind the belt-shaped member at a high-precision winding pitch and winding position even when the outer surface of the wound body is uneven. The purpose is to provide.

    The first purpose is to bring a narrow belt-shaped member supplied toward the rotating body to be wound into close contact with the outer peripheral surface of the winding roller, while rotating the winding roller. In the belt-shaped member winding apparatus in which the belt-shaped member is moved in the width direction of the belt-shaped member so that the belt-shaped member is pressed against the body to be wound and spirally wound around the belt-shaped member. By removing the edge formed at the boundary between the end face in the axial direction and the outer peripheral surface, this can be achieved by a belt-like member winding device in which an inclined surface extending in the circumferential direction is formed at the boundary.

  Second, the narrow belt-shaped member supplied toward the rotating body to be wound is brought into close contact with the outer peripheral surface of the winding roller, and the belt-shaped member is rotated in the width direction while rotating the winding roller. In the winding method of the belt-shaped member that is configured to press the belt-shaped member against the body to be wound and spirally wound around the belt-shaped member by moving, an axial end surface on the moving direction side as the winding roller By removing the edge formed at the boundary with the outer peripheral surface, this can be achieved by a method for winding the belt-shaped member using a winding roller having an inclined surface extending in the circumferential direction at the boundary.

  In the present invention, since the edge formed at the boundary between the axial end surface and the outer peripheral surface on the moving direction side of the winding roller is removed, an inclined surface extending in the circumferential direction is formed at the boundary. Even if unevenness exists on the outer surface of the body, the inclined surface rides on the unevenness and smoothly passes over, so that interference between the winding roller and the unevenness is effectively suppressed. Thereby, the moving speed of the winding roller can be maintained substantially constant, and the belt-like member can be easily wound at a highly accurate winding pitch and winding position.

  Moreover, if comprised as described in Claim 2, an edge and an inclined surface will coexist in the said boundary, However, Paste of a strip | belt-shaped member is ensured by the presence of an edge, On the other hand, an inclined surface exists By doing so, the moving speed of the winding roller can be maintained substantially constant as described above, and both of these can be achieved. Furthermore, if comprised as described in Claim 3, it can be made to carry out the unevenness | corrugation by an inclined surface reliably, more reliably affixing a strip | belt-shaped member.

  Moreover, if comprised as described in Claim 4, the balance of the edge and inclined surface which occupies one boundary circumference will become favorable, the above-mentioned sticking will become more reliable, and moving speed will be made more constant. Can do. Furthermore, if it comprises as described in Claim 5, while sticking of the strip | belt-shaped member mentioned above becomes still more reliable, the moving speed of a winding roller can be made still more constant.

Embodiment 1 of the present invention will be described below with reference to the drawings.
In FIGS. 1, 2, and 3, reference numeral 11 denotes a drive unit fixed on the floor surface, and this drive unit 11 has a horizontal main shaft 12 extending in the left-right direction. A rigid core 13 whose outer surface is the same shape as the inner surface of a pneumatic tire (vulcanized tire) is detachably attached to the distal end portion of the main shaft 12, and this rigid core 13 can be assembled and disassembled, and is an aluminum alloy. It is comprised from metals, such as. The rigid core 13 is composed of a plurality of arcuate segments 14 arranged side by side in close contact with each other in the circumferential direction, and a fastening body 15 that fastens the segments 14 to each other.

  Here, the segment 14 is composed of two types of segments, a fan-shaped sector segment and a parallel segment whose both ends in the circumferential direction are parallel, and the sector segments and the parallel segments are alternately arranged in the circumferential direction. Instead of the parallel segments, chevron shaped segments may be used. Reference numeral 17 denotes a tire intermediate body formed on the outer side of the rigid core 13, and the tire intermediate body 17 is formed by, for example, pasting tire constituent members such as unvulcanized rubber ribbons, wires, and cords around the rigid core 13 one after another. To be molded.

  The rigid core 13 and the tire intermediate body 17 described above constitute a wound body 19 as a whole, and the wound body 19 can receive a driving force from the driving unit 11 and rotate around a horizontal axis. . Here, the wound body may be composed of the rigid core 13 alone, or a molding drum that can be expanded and contracted, or a molding drum and a substantially toroidal tire intermediate body supported by the molding drum. You may comprise.

  Reference numeral 22 denotes a support plate extending in the left-right direction installed on the floor surface behind the wound body 19, and a pair of guide rails 23 extending in the left-right direction are laid on the upper surface of the support plate 22. Reference numeral 24 denotes a lower moving plate that receives a driving force from a moving mechanism (not shown) and can move in the left-right direction while being guided by the guide rail 23. A pair of upper moving plates 24 extend in the front-rear direction on the upper surface. A guide rail 25 is laid.

  Reference numeral 28 denotes an upper moving plate that receives a driving force from a moving mechanism (not shown) and can move in the front-rear direction while being guided by the guide rail 25. The upper moving plate 28 includes a swing plate that extends forward. The base end portion of 29 is connected, and the swing plate 29 can receive a driving force from the drive motor 30 and swing in the horizontal plane around the base end portion.

  An extruder 31 serving as a supply means extending in the vertical direction is installed at the front end portion (tip portion) of the swing plate 29. The upper end portion of the extruder 31 is rotated about a vertical axis by a drive motor (not shown). An extruding part 32 is provided. The extruding part 32 has an extruding port 34 for extruding a rubber ribbon 33 made of unvulcanized rubber as a strip-shaped member having a narrow width, and the rubber ribbon 33 extruded from the extruding port 34 is rotating. Supplied toward 19.

  The pushing portion 32 has a cylindrical winding roller 37 rotatably supported by a cover 36 via a rotation shaft 35. The rotation axis of the winding roller 37 is the rotation axis of the body 19 to be wound. It is located on the plane including A part of the winding roller 37 protrudes from the cover 36 toward the wound body 19, and the width (length in the axial direction) is the same as or slightly wider than the width of the rubber ribbon 33.

  Since the winding roller 37 is disposed between the extrusion port 34 and the wound body 19, the rubber ribbon 33 extruded from the extrusion port 34 is exposed to the outer peripheral surface of the winding roller 37 by an adhesive force immediately after extrusion. After closely contacting 37b, the winding roller 37 is rotated in the circumferential direction by about 1/4 turn. When the rubber ribbon 33 reaches the pressing position 38 that intersects the plane including the rotational axes of the wound body 19 and the winding roller 37, the rubber ribbon 33 is pressed against the wound body 19 by the winding roller 37. It is crimped to the outer surface of the wound body 19.

  At this time, the wound body 19 is driven and rotated by the drive unit 11, and the winding roller 37 is rotated by being driven by the wound body 19, while the winding roller 37 is lower and the upper moving plates 24 and 28 are rotated. , The swing of the swing plate 29, and the rotation of the push-out portion 32 move along the outer surface of the wound body 19 at a constant pitch in the width direction of the rubber ribbon 33 along the outer surface of the wound body 19. When rotating in a horizontal plane while maintaining a parallel relationship with the tangent to the outer surface of the rubber ribbon 33, the rubber ribbon 33 is spirally wound around the wound body 19 while being displaced in the width direction of the rubber ribbon 33, for example, A top tread is formed. An inner liner, a side tread, a rubber chafer, or the like can be formed by winding a rubber ribbon 33 as a belt-shaped member.

  Reference numeral 40 denotes a guide roller rotatably supported by the cover 36 immediately above the winding roller 37. The guide roller 40 is rotatable around a rotation axis parallel to the rotation axis of the winding roller 37. The rubber ribbon 33 supplied to is pressed against the winding roller 37 to be brought into close contact therewith. The support plate 22, the lower and upper moving plates 24 and 28, the moving mechanism, the swing plate 29, and the drive motor 30 described above are wound around the winding roller 37 in which the narrow rubber ribbon 33 is in close contact with the outer peripheral surface 37b. By moving the rubber ribbon 33 in the width direction along the outer surface of the attachment body 19, a moving means 42 for winding the rubber ribbon 33 around the wound body 19 in a spiral shape is configured.

  In the present invention, the rubber ribbon extruded from the extruder is once superimposed on a belt-shaped liner and conveyed to just before the wound body, and then wound around the wound body by a winding roller while peeling from the liner. After the rubber ribbon extruded from the extruder is wound around the liner and temporarily stored, the rubber ribbon and the liner are unwound as necessary, and the rubber ribbon is peeled off from the liner just before the wound body. However, it may be wound around the wound body by a winding roller.

  Further, when the rubber ribbon 33 is wound around the wound body 19, the rubber ribbon 33 may be wound while the side ends of the rubber ribbon 33 are butted against each other, or the side ends of the adjacent rubber ribbons 33 are overlapped. You may make it attach. Furthermore, in the present invention, the above-described belt-shaped member may be composed of a belt-shaped rubber in which a small number of reinforcing cords extending in the longitudinal direction are embedded. In this case, the belt-shaped member and the belt reinforcing layer are formed by the belt-shaped member. Can be molded.

  Here, when a pair of edges 37c (including a lightly scraped one) that intersects the boundary between the axial end surfaces 37a and the outer peripheral surface 37b of the winding roller 37 at 90 degrees are formed, If there are irregularities on the outer surface of the body 19, when the winding roller 37 moves in the width direction of the rubber ribbon 33, the moving edge 37c of the winding roller 37 interferes with the aforementioned irregularities, For example, the winding speed of the winding roller 37 changes due to being caught, and as a result, the winding pitch of the rubber ribbon 33 may be disturbed or the winding position may be shifted.

  Therefore, in this embodiment, by removing the edge 37c formed at the boundary between the end surface 37a and the outer peripheral surface 37b on the moving direction side of the winding roller 37, the inclined surface 45 extending in the circumferential direction is formed at the boundary. It was formed. As a result, even if there are irregularities on the outer surface of the wound body 19 as described above, the inclined surface 45 rides on the irregularities and smoothly gets over, and interference between the winding roller 37 and the irregularities is effectively achieved. It is suppressed. Thereby, the moving speed of the winding roller 37 can be maintained substantially constant, and the rubber ribbon 33 can be easily wound around the wound body 19 at a highly accurate winding pitch and winding position.

  Here, the inclined surface 45 is formed at the boundary on the moving direction (front) side of the winding roller 37 because the edge 37c on the moving direction side of the winding roller 37 is covered when the winding roller 37 moves. This is because it interferes with the irregularities on the outer surface of the attached body 19, but in this embodiment, it is inclined not only on the moving direction side of the winding roller 37 but also on the boundary located on both sides of the moving direction as shown in FIGS. A surface 45 is formed. This is because the assembly work is facilitated because it is not necessary to care about the mounting direction during assembly.

  The inclined surface 45 described above can be formed by removing the edge 37c by grinding, cutting, or the like. The shape of the inclined surface 45 is, for example, a linear cross section inclined at 45 degrees with respect to the end surface 37a, A typical example is that having an arcuate cross section that smoothly continues to the end surface 37a and the outer peripheral surface 37b. Further, the inclined surface 45 may be formed over the entire circumference of the boundary, but it is preferable to form it on a part of the circumference of the boundary by removing a part of the edge 37c as in this embodiment. . The reason is that the edge 37c and the inclined surface 45 are mixed in the boundary in this way, but the presence of the edge 37c in the boundary allows the rubber ribbon 33 to be pressed over the entire width. This is because sticking is ensured, and on the other hand, the presence of the inclined surface 45 makes it possible to maintain the moving speed of the winding roller 37 substantially constant as described above, and to achieve both of them.

  Further, only one inclined surface 45 may be formed on the perimeter of the boundary, but a plurality of the inclined surfaces 45 are separated by 30 degrees or more in the circumferential direction on the circumference of the boundary (in FIG. 4, four are separated by 90 degrees in the circumferential direction). ) It is preferable to form the rubber ribbon 33 because it is possible to surely get over the irregularities by the inclined surface 45 while more securely attaching the rubber ribbon 33. At this time, the total value of the circumferential angles of the inclined surface 45 is preferably in the range of 30 degrees to 180 degrees. The reason is that if the angle range is as described above, the balance between the edge 37c and the inclined surface 45 occupying one round of the boundary becomes good, the above-mentioned pasting is further ensured, and the moving speed is made more constant. Because you can. Here, the circumferential angle of the inclined surface 45 is a straight line connecting one circumferential direction end of the inclined surface 45 and the rotation axis of the winding roller 37, and the other circumferential end of the inclined surface 45 and the winding roller 37. The angle of intersection with a straight line connecting the rotation axis.

  Further, as described above, the inclined surfaces 45 formed at the boundaries on both axial sides of the winding roller 37 may be displaced in the circumferential direction, but at the same circumferential position (same phase) as in this embodiment. It may be formed. Furthermore, the width (length in the axial direction) of each inclined surface 45 may be the same regardless of the circumferential position, but the width gradually increases from the circumferential ends toward the circumferential center as in this embodiment. May be large.

  As described above, when the width of the inclined surface 45 is gradually increased toward the center in the circumferential direction, the maximum width L of the inclined surface 45 is preferably in the range of 4 to 6 mm. The reason is that if the maximum width L is less than 4 mm, the area of the inclined surface 45 becomes narrow and the interference between the edge 37c and the unevenness may not be sufficiently suppressed. There is a risk that air will enter due to insufficient pressing, but if it is within the above-mentioned range, the rubber ribbon 33 can be more reliably applied and the moving speed of the winding roller 37 is made more constant. Because it can.

Next, the operation of the first embodiment will be described.
First, while rotating the rigid core 13 around the axis by the drive unit 11, tire constituent members such as an unvulcanized rubber ribbon, a wire, and a cord are supplied around the rigid core 13 and attached one after another, and the tire intermediate 17 is attached. Mold. Next, the moving means 42 is operated to move the upper moving plates 24, 28 along the guide rails 23, 25, and the drive motor 30, the swing plate 29 and the pusher 32 of the extruder 31 by the drive motor. Are respectively swung and rotated so that the extruded portion 32 faces the winding start position of the wound body 19 including the rigid core 13 and the tire intermediate body 17.

  Next, the wound body 19 is rotated by the drive unit 11, while the extruder 31 is operated to extrude the narrow rubber ribbon 33 from the extrusion port 34, and the rubber ribbon 33 is rotated. Supply towards. The rubber ribbon 33 is in close contact with the outer peripheral surface 37b of the winding roller 37 during the supply to the wound body 19 and is then moved in the circumferential direction by about 1/4 turn by the driven rotation of the winding roller 37. At this time, the rubber ribbon 33 is pressed against the wound body 19 by the winding roller 37 and pressed against the outer surface of the wound body 19.

  As described above, when the rubber ribbon 33 is pressure-bonded to the wound body 19, the winding roller 37 is moved downward, by moving the upper moving plates 24, 28, by swinging the swinging plate 29, and by rotating the pushing portion 32. The rubber ribbon 33 is moved at a constant pitch in the horizontal direction along the outer surface of the wound body 19 and is swung in the horizontal plane while maintaining a parallel relationship with a tangent to the outer surface of the wound body 19. As a result, the rubber ribbon 33 is pressed against the wound body 19 by a winding roller 37 that rotates following the wound body 19, and is spirally wound around the wound body 19 while being displaced in the width direction. To form a top tread.

  At this time, as the winding roller, the winding roller 37 in which the inclined surface 45 extending in the circumferential direction is formed at the boundary between the end surface 37a and the outer peripheral surface 37b on the moving direction side (here, both sides) is used. Even if the outer surface of the body 19 has irregularities, the inclined surface 45 rides on the irregularities and smoothly gets over, and the interference between the winding roller 37 and the irregularities can be effectively suppressed. Thereby, the moving speed of the winding roller 37 can be maintained substantially constant, and the rubber ribbon 33 can be easily wound around the wound body 19 at a highly accurate winding pitch and winding position.

  The present invention can be applied to the industrial field in which a narrow belt-like member is wound around a wound body while being spirally pressed by a winding roller.

It is a schematic plan view in which a part showing Embodiment 1 of this invention was fractured. It is II sectional view taken on the line of FIG. It is the perspective view by which a part of winding roller vicinity was fractured | ruptured. It is an expanded view of the outer peripheral surface of a winding roller.

Explanation of symbols

19… Wound body 33… Strip member
37 ... Winding roller 37a ... End face
37b ... outer peripheral surface 37c ... edge
45 ... Inclined surface

Claims (6)

    A narrow belt-shaped member supplied toward the rotating body to be wound is brought into close contact with the outer peripheral surface of the winding roller and moved in the width direction of the belt-shaped member while rotating the winding roller. In the belt-shaped member winding device that presses the belt-shaped member against the body to be wound and spirally winds around the belt-shaped member, at the boundary between the axial end surface and the outer peripheral surface on the moving direction side of the winding roller An apparatus for winding a belt-shaped member, wherein an inclined surface extending in the circumferential direction is formed at the boundary by removing the formed edge.     The belt-shaped member winding device according to claim 1, wherein the inclined surface is formed on a part of the circumference of the boundary.     The belt-shaped member winding device according to claim 2, wherein a plurality of the inclined surfaces are formed at a distance of 30 degrees or more in the circumferential direction.     The belt-shaped member winding apparatus according to claim 3, wherein a total value of the circumferential angles of the inclined surfaces is in a range of 30 degrees to 180 degrees.     The winding of the band-shaped member according to any one of claims 1 to 4, wherein when the width of the inclined surface becomes larger toward the center in the circumferential direction, the maximum width L of the inclined surface is in a range of 4 to 6 mm. Attachment device.     A narrow belt-shaped member supplied toward the rotating body to be wound is brought into close contact with the outer peripheral surface of the winding roller and moved in the width direction of the belt-shaped member while rotating the winding roller. In the winding method of the belt-shaped member in which the belt-shaped member is pressed against the body to be wound and spirally wound around the belt member, the winding roller has an axial end surface on the moving direction side and an outer peripheral surface. A belt-shaped member winding method characterized by using a winding roller in which an inclined surface extending in the circumferential direction is formed at the boundary by removing an edge formed at the boundary.

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