JP2012051294A - Roll for sticking sheet-shaped member and tire manufacturing apparatus using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll for sticking a sheet-shaped member which, when a sheet-shaped member is stuck to a member to be stuck, can suppress a trouble in which air infiltrated into a space between members gathers into a lump to generate standing air, and to provide a tire manufacturing apparatus which can suppress the occurrence of the standing air inside a tire.SOLUTION: The roll superimposes a sheet-shaped member on the member to be stuck, thereafter, presses the sheet-shaped member and sticks the sheet-shaped member to the member to be stuck, wherein a plurality of minute projections 21 are formed on the whole of the outer circumferential face of the roll. The tire manufacturing apparatus employs the roll 2 for sticking a sheet-shaped member.

Description

  TECHNICAL FIELD The present invention relates to a roll used for attaching a sheet-like member and a tire manufacturing apparatus using the roll, and in particular, a roll that can be suitably used when attaching a sheet-like member in a tire manufacturing process and a tire using the roll. The present invention relates to a manufacturing apparatus.

  In general, as one method of attaching a sheet-like member to another member (a member to be attached), the sheet-like member superimposed on the member to be attached is pressed with a roll and attached to the sheet-like member. A method of crimping the member is used.

  Specifically, for example, in a tire manufacturing process, sheet-like tire constituent members such as rubber sheets arranged on the outer peripheral surface of a molding drum are pressure-bonded using a stitching roll or a pressing roll (for example, Patent Document 1).

  Here, conventionally, as a stitching roll or a pressing roll, a roll having a flat outer peripheral surface is used from the viewpoint of efficiently exhausting air that has entered between the members over the entire surface between the members.

JP 2007-223223 A

However, when a product such as a tire is manufactured by pressure bonding the sheet-like member and the member to be bonded using the conventional roll having a flat outer peripheral surface, the air that has entered between the members when the members are overlapped with each other Sometimes gathered at the time of pressure bonding and remained as a lump of air between the members. As shown in FIG. 4, the air that has entered between the members uses a roll 60 having a flat outer peripheral surface, and a member to be bonded comprising a sheet-like member 61, a wide upper layer 62A, and a narrow lower layer 62B. In the case where 62 is pasted, it is particularly easy to become a lump 63 at a portion where the step S exists.
When air lumps remain between the members to cause air accumulation, desired product performance / function may not be obtained.

  Then, an object of this invention is to provide the roll which can suppress that the air which entered between the members gathers, becomes a lump, and an air pool is generated inside a product. Moreover, an object of this invention is to provide the tire manufacturing apparatus which can suppress that an air pool is generated inside a tire at the time of tire manufacture.

  This invention aims to solve the above-mentioned problem advantageously, and the sheet-like member affixing roll of the present invention presses after the sheet-like member is overlaid on the member to be adhered, A roll for sticking a sheet-like member to a member to be stuck, wherein a plurality of minute protrusions are formed on the entire outer peripheral surface. In this way, if a plurality of minute protrusions are formed on the entire outer peripheral surface of the roll, a plurality of air that has entered between the members when the stacked adherend member and the sheet-like member are pressed and bonded together by the roll. Therefore, the formation of air masses can be suppressed. Therefore, the occurrence of air accumulation can be suppressed.

  Here, as for the roll for sheet-like member sticking of this invention, it is preferable that the height of the said microprotrusion on the said outer peripheral surface is 1-5 mm. If the height of the microprotrusions is 1 mm or more, the air that has entered between the members can be sufficiently dispersed, and if it is 5 mm or less, the sheet-like member can be uniformly and reliably attached to the member to be attached. Because it can.

  Moreover, it is preferable that the arrangement | positioning pitch of the said microprotrusion of the said outer peripheral surface is 2-10 mm in the roll for sheet-like member sticking of this invention. If the arrangement pitch of the minute protrusions is 2 mm or more, the air that has entered between the members can be sufficiently dispersed, and if it is 10 mm or less, the sheet-like member can be uniformly and reliably attached to the member to be attached. Because you can.

Furthermore, it is preferable that the sheet-like member sticking roll of the present invention has the fine protrusions formed on the outer peripheral surface at a surface density of 1 to 4 pieces / cm ² . If the surface density is 1 piece / cm ² or more, the air that has entered between the members can be sufficiently dispersed, and if it is 4 pieces / cm ² or less, the sheet-like member is uniformly and reliably attached to the member to be adhered. It is because it can paste on.

  Moreover, this invention aims at solving the said subject advantageously, The tire manufacturing apparatus of this invention uses the roll for sheet-like member sticking mentioned above, It is characterized by the above-mentioned. In this way, if a roll having a plurality of minute protrusions formed on the outer peripheral surface is used, it is possible to suppress the air that has entered between the tire constituent members from being collected at the time of manufacturing the tire and forming a lump of air. The occurrence of accumulation can be suppressed.

  According to the roll for sticking a sheet-like member of the present invention, when the sheet-like member is stuck to a member to be pasted, the air that has entered between the members gathers into a lump and suppresses occurrence of air accumulation. can do. Moreover, according to the tire manufacturing apparatus of this invention, it can suppress that an air pool arises inside a tire.

It is a front view of the rotation roll comprised by inserting the rotating shaft in the typical sheet-like member sticking roll according to this invention. It is explanatory drawing which shows the state which has affixed rubber sheet members using the rotating roll shown in FIG. It is a figure explaining the structure of the typical tire manufacturing apparatus according to this invention, (a) is a side view of a tire manufacturing apparatus, (b) is description explaining the moving direction of a stitching roll by the front view of a tire manufacturing apparatus. FIG. It is explanatory drawing explaining the mechanism in which the air which entered between the members turns into a lump when the conventional rotary roll with a flat outer peripheral surface is used.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The roll for sheet-like member sticking of the present invention is used when sticking a sheet-like member to a member to be stuck, and is characterized in that a plurality of minute protrusions are formed on the outer peripheral surface. The tire manufacturing apparatus of the present invention is characterized by using a sheet-like member attaching roll having a plurality of minute protrusions formed on the outer peripheral surface.

  In addition, as a to-be-bonded member and a sheet-like member bonded together using the roll for sheet-like member sticking of this invention, tire constituent members, such as an inner liner and a rubber sheet, are not specifically limited, for example. Can be mentioned.

  Here, as shown in FIG. 1, an example of the sheet-like member attaching roll of the present invention can be used as a rotating roll 10 formed by inserting the rotating shaft 1 into the sheet-like member attaching roll 2. .

  The rotating shaft 1 is for supporting the roll 2 for sticking a sheet-like member, and is made of a known material. In the rotating roll 10 of this example, the rotating shaft 1 is inserted into the sheet-like member attaching roll 2, but the rotating shaft and the sheet-like member attaching roll may be integrally formed.

  On the outer peripheral surface of the sheet-like member pasting roll 2, the superposed member to be pasted and the sheet-like member are pressed by the sheet-like member pasting roll 2, and the sheet-like member is pressed against the member to be pasted. A plurality of warped micro-projections 21 are formed to disperse the air that has entered between the members when pasting. In addition, the roll 2 for sheet-like member sticking can be manufactured using the cylindrical metal mold | die which has the recessed part of the shape corresponding to the microprotrusion 21, for example in an internal peripheral surface. Incidentally, the sheet-like member sticking roll may be manufactured by sticking the sheet on which the microprojections are formed on the outer peripheral surface of the cylindrical body, or by grinding the outer peripheral surface of the cylindrical body to form microprotrusions. It may be manufactured.

  Here, from the viewpoint of sufficiently dispersing the air that has entered between the members while securely attaching the sheet-like member to the member to be attached, the height of the minute protrusions 21 on the outer peripheral surface of the roll 2 for attaching the sheet-like member. H is preferably 1 to 5 mm. If the height H of the microprojections 21 on the outer peripheral surface is set to 1 mm or more, the overlapped member and the sheet-like member can be strongly pressed by the microprojections 21, and the air that has entered between the members can be sufficiently absorbed. This is because it can be dispersed. Further, if the height H of the microprojections 21 on the outer peripheral surface is 5 mm or less, the difference in the pressing force generated between the portion where the microprojections 21 are formed and the portion where the microprojections 21 are not formed is reduced. This is because the sheet-like member can be uniformly and reliably attached to the attaching member.

  Moreover, it is preferable that the arrangement | positioning pitch P of the microprotrusion 21 of the outer peripheral surface of the sheet-like member sticking roll 2 shall be 2-10 mm. If the arrangement pitch P of the microprojections 21 on the outer peripheral surface is 2 mm or more, a certain amount of space can be secured between the adjacent microprojections 21, so that air that has entered between the members can be sufficiently dispersed. If the thickness is 10 mm or less, the area difference between the portion where the microprojections 21 are formed and the portion where the microprojections 21 are not formed is reduced, and the sheet-like member is uniformly and reliably attached to the member to be attached. Because you can.

Furthermore, it is preferable that the number of fine protrusions 21 provided on the outer peripheral surface of the sheet-like member pasting roll 2 is such that the surface density is 1 to 4 / cm ² . If the surface density is 1 piece / cm ² or more, the air that has entered between the members can be sufficiently dispersed using a sufficient number of microprojections 21, and if the surface density is 4 pieces / cm ² or less, This is because the sheet-like member can be uniformly and reliably attached to the attaching member.

  From the viewpoint of preventing the sheet-like member from being damaged, the shape of the microprojection 21 may be a shape that does not have an angular tip, for example, a shape in which a truncated cone is disposed on the top of a cylinder, or a hemispherical shape. preferable.

  Then, the bonding of the sheet-like member using the rotating roll 10 and the member to be bonded is performed using the rotating roll 10 as a pressing roll, for example, as shown in FIG. Specifically, the sheet-like member of the rotary roll 10 is attached from the upper side of the sheet-like member 32 in a state where the rubber-like sheet-like member 32 is superimposed on the member-to-be-attached member 31 made of sheet-like rubber. The roll 2 is pressed to press the sheet-like member 32, and the sheet-like member 32 is bonded to the member to be attached 31.

  Here, as described above, since the plurality of minute protrusions 21 are formed on the outer peripheral surface of the sheet-like member pasting roll 2 of the rotary roll 10, the superposed pasted member 31 and the sheet-like member 32 are overlapped. When pressing and bonding, the air that has entered between the members is dispersed by the plurality of microprojections 21, and a large lump of air is not formed. Therefore, the occurrence of air accumulation in the bonded product can be suppressed, and desired product performance can be obtained.

  Next, the structure of an example of the tire manufacturing apparatus of this invention is shown to Fig.3 (a), (b). The tire manufacturing apparatus shown in FIGS. 3A and 3B is a band molding apparatus 50 that molds a band. In addition, the tire manufacturing apparatus of this invention is not limited to a band molding apparatus, A green tire molding apparatus etc. are contained in the tire manufacturing apparatus of this invention.

  The band molding device 50 is a device for forming a band by supplying tire components such as an inner liner 52 and a carcass ply 53 to the outer periphery of a molding drum 51 to form a band, and includes a driving device 54 and a driving device 54. A band drum device (see FIG. 3B) including a support shaft 55 protruding horizontally from the support shaft 55 and a molding drum 51 supported by the support shaft 55, and a tire component supplying a tire component to the outer periphery of the molding drum 51 A feeding device (not shown), a stitching roll 56 rotatably held at the tips of a pair of support rods 57, and a drive mechanism 58 for reciprocating the support rods 57 in the left-right direction in FIG. And a stitching device (see FIG. 3A) including a base 59 provided at a lower portion of the drive mechanism 58.

  Here, the support shaft 55 of the band drum device is connected to a motor (not shown) built in the drive device 54. In this band drum device, the molding drum 51 rotates by rotating the motor. To do.

  Further, the stitching roll 56 held at the tip of the support rod 57 of the stitching device has the same configuration as the sheet-like member pasting roll of the previous example. Micro projections (not shown) are formed on the entire outer peripheral surface.

  In the band molding device 50, the molding drum 51 is rotated in the direction of the arrow in FIG. 3A while the stitching roll 56 is separated from the molding drum 51, and the molding drum 51 is fed from the band component supply device. The inner liner 52 and the carcass ply 53 are sequentially supplied to the outer periphery of the carcass ply, and the carcass ply 53 is attached on the inner liner 52.

  Here, when the carcass ply 53 is stuck on the inner liner 52, first, the carcass ply 53 is overlaid on the inner liner 52, and then the rotation of the molding drum 51 is stopped, as shown in FIG. In this manner, the pair of stitching rolls 56, 56 are pressed against the outer peripheral surface of the carcass ply 53. Next, the molding drum 51 is rotated, and the pair of stitching rolls 56 and 56 are pressed against the outer peripheral surface of the carcass ply 53 while being in the axial direction of the molding drum 51 (the direction indicated by the arrow in FIG. 3B). Move back and forth.

  According to such a band molding device 50, since the minute protrusions are provided on the entire outer peripheral surface of the stitching roll 56, the air that has entered between the inner liner 52 and the carcass ply 53 gathers. The carcass ply 53 can be affixed on the inner liner 52 while suppressing the formation of air mass, and the occurrence of air accumulation inside the product tire can be suppressed.

  In addition, the tire manufacturing apparatus using the roll for sheet-like member sticking of this invention and this sheet-like member sticking roll is not limited to the said example, The roll for sheet-like member sticking of this invention and a tire The manufacturing apparatus can be modified as appropriate. Moreover, the use of the roll for sheet-like member sticking of this invention and a tire manufacturing apparatus is not limited to the said example. Specifically, the sheet-like member attaching roll of the present invention may be used when attaching a rubber sheet or the like on a drum such as a molding drum. Moreover, you may use the tire manufacturing apparatus of this invention in the material preparation process which bonds inner liner structural members together and produces an inner liner.

  According to the roll for sticking a sheet-like member of the present invention, when the sheet-like member is stuck to a member to be pasted, the air that has entered between the members gathers into a lump and suppresses occurrence of air accumulation. can do. Moreover, according to the tire manufacturing apparatus of this invention, it can suppress that an air pool arises inside a tire.

DESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Roll for sheet-like member affixing 10 Rotating roll 21 Minute protrusion 31 Adhered member 32 Sheet-like member 50 Band molding device 51 Molding drum 52 Inner liner 53 Carcass ply 54 Drive device 55 Support shaft 56 Stitching roll 57 Support rod 58 Drive mechanism 60 Roll 61 Sheet-like member 62 Adhered member 62A Upper layer 62B Lower layer 63 Mass S Step

Claims (5)

A roll for affixing a sheet-like member on a member to be attached by pressing after overlapping the sheet-like member on the member to be attached,
A roll for attaching a sheet-like member, wherein a plurality of minute protrusions are formed on the entire outer peripheral surface.   The height of the said microprotrusion of the said outer peripheral surface is 1-5 mm, The sheet-like member sticking roll of Claim 1 characterized by the above-mentioned.   The roll for sheet-like member sticking according to claim 1 or 2, wherein an arrangement pitch of the minute projections on the outer peripheral surface is 2 to 10 mm. Wherein the outer peripheral surface, characterized in that the formation of the minute projections at the surface density of 1-4 / cm ^2, the sheet-like member affixing roll according to any one of claims 1 to 3.   A tire manufacturing apparatus using the roll for sticking a sheet-like member according to claim 1.

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