JP2007022043A - Method for manufacturing tire with pedestal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To ensure that impairing a bladder 35 is sufficiently inhibited when a pedestral 9 for fitting an electronic component is mounted on an inner liner 7. <P>SOLUTION: A first pedestral member 25 is applied to the inner liner 7 of a green tire 5', the pedestal 9 for fitting an electronic component is set to the inner liner 7, and a second pedestral member 27 is protected by an elastically deformable cover 33. Further, the green tire 5' is vulcanized while pressurizing the green tire 5' internally with the help of the bladder 35 and thus a tire 5 of a specified finished product shape is vulcanization-molded from the green tire 5', and the first pedestral member 25 is bonded to the inner liner 7 through a cross-linking reaction and the cover 33 is removed from the pedestral 9 for fitting an electronic component. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a tire with a pedestal for manufacturing a tire with a pedestal in which an electronic component mounting base is attached to an inner liner of the tire.

  2. Description of the Related Art In recent years, there are various electronic component mounting bases for mounting electronic components such as transponders to tires. Among them, there is a first made of a rubber material so as not to be greatly deformed by an external force input from the tire. There is a composite material type electronic component mounting base obtained by superposing a base member and a second base member made of a rigid material. Here, the first pedestal member member has a first attachment surface that can be attached to an inner liner of the tire, and the second pedestal member has a second attachment surface to which the electronic component can be attached. Have.

  And when attaching the base for electronic component attachment of the composite material type to the inner liner of the tire, it is carried out as follows.

  That is, as a first mounting mode, an adhesive is applied to the first mounting surface of the first base member or the inner liner of the tire. The first base member is attached to the inner liner of the tire, and the composite material type electronic component mounting base is bonded to the inner liner of the tire with an adhesive.

  As a second mounting mode, the first pedestal member is attached to an inner liner of a raw tire, and the composite material type electronic component mounting pedestal is set on the inner liner. Then, the raw tire is vulcanized while being pressurized from the inside of the raw tire by a bladder, whereby the tire having a predetermined product shape is vulcanized and molded from the raw tire, and the first pedestal member is attached to the tire. It adheres to the inner liner by a crosslinking reaction.

In addition, there exists a thing shown to patent document 1 and patent document 2 as a prior art relevant to this invention.
JP 2000-168321 A JP-A-9-136517

  By the way, in the former mounting mode, the adhesiveness between the electronic component mounting base and the inner liner cannot be sufficiently secured, and the electronic component mounting base is easily peeled off from the inner liner. There's a problem.

  On the other hand, in the latter mounting mode, although the adhesiveness between the electronic component mounting base and the inner liner can be sufficiently secured, the bladder is made of a rigid material during the vulcanization molding of the tire. As a result, the load is pressed against the second pedestal member, and a large load is locally applied to the bladder. Therefore, there is a problem that the bladder is easily damaged when the electronic component mounting base is mounted on the inner liner.

  Therefore, the present invention provides a novel, in which a large load does not act locally on the bladder even if the bladder is pressed against the second pedestal member made of a rigid material during vulcanization molding of the tire. It aims at providing the manufacturing method of the tire with a base of a structure.

  A first feature of the present invention is to manufacture a tire with a pedestal in which an electronic component mounting pedestal formed by superposing a first pedestal member made of a rubber material and a second pedestal member made of a rigid material is attached to an inner liner of the tire. In the method of manufacturing a tire with a pedestal for carrying out, a pedestal setting step of attaching the first pedestal member to an inner liner in a raw tire and setting the electronic component mounting pedestal on the inner liner; and the pedestal setting step, After the completion, the protection step of protecting the second pedestal member so as to cover the second pedestal member with an elastically deformable cover, and after the protection step, the raw tire is added while being pressurized from the inside of the raw tire by a bladder. By vulcanizing, the tire having a predetermined product shape is vulcanized from the raw tire, and the first pedestal member is A vulcanizing step of bonding by cross-linking reaction to the inner liner in the tire, after the vulcanization step has been completed, is to the cover equipped with a, a cover removal step of removing from the electronic component mounting pedestal.

  In addition, an electronic component means a transponder, a tire internal pressure monitoring apparatus, etc., for example.

  According to the first feature, the second pedestal member is protected by the cover that can be elastically deformed before vulcanizing the raw tire while being pressurized from the inside of the raw tire by the bladder. Therefore, during the vulcanization molding of the tire, even if the bladder is pressed against the second pedestal member side made of a rigid material, the cover elastically deforms to exert a function as a cushioning material. A large load does not work locally.

  According to a second aspect of the present invention, a tire with a pedestal in which an electronic component mounting pedestal formed by superposing a first pedestal member made of a rubber material and a second pedestal member made of a rigid material is attached to an inner liner of the tire is manufactured. In the manufacturing method of a tire with a pedestal for carrying out, a protection process for covering the second pedestal member with an elastically deformable cover, and after the protection process is finished, the first pedestal member is an inner part of the raw tire. A pedestal setting step of attaching the electronic component mounting base to the inner liner, and attaching the raw tire while applying pressure from the inside of the raw tire by a bladder after the base setting step is completed. By vulcanizing, the tire having a predetermined product shape is vulcanized from the raw tire, and the first pedestal member is A vulcanizing step of bonding by cross-linking reaction to the inner liner in the tire, after the vulcanization step has been completed, is to the cover equipped with a, a cover removal step of removing from the electronic component mounting pedestal.

  In addition, an electronic component means a transponder, a tire internal pressure monitoring apparatus, etc., for example.

  According to the second feature, the second pedestal member is protected by the elastically deformable cover before vulcanizing the raw tire while being pressurized from the inside of the raw tire by the bladder. Therefore, during the vulcanization molding of the tire, even if the bladder is pressed against the second pedestal member side made of a rigid material, the cover elastically deforms to exert a function as a cushioning material. A large load does not work locally.

  According to a third feature of the present invention, in addition to the first feature, before starting the pedestal setting step, at least one of the overlapping surfaces of the first pedestal member and the overlapping surface of the second pedestal member. Applying a vulcanized adhesive to the first pedestal member and the second pedestal member to polymerize the first pedestal member and the second pedestal member to bond the pedestal member adhesion A process.

  According to a fourth aspect of the present invention, in addition to the second feature, before the protection step is started, at least one of the overlapping surfaces of the first pedestal member and the overlapping surface of the second pedestal member A pedestal member bonding step for bonding the overlapping surface of the first pedestal member and the overlapping surface of the second pedestal member by applying a vulcanized adhesive and polymerizing the first pedestal member and the second pedestal member. And having provided.

  According to a fifth feature of the present invention, in addition to the first feature or the second feature, the first pedestal member is vulcanized during the vulcanization step, and the overlapping surface of the first pedestal member and the first surface It is to adhere | attach the superposition | polymerization surface of a 2nd base member by bridge | crosslinking reaction.

  According to a sixth aspect of the present invention, in addition to any one of the first to fifth aspects, the cover is formed by polymerizing a rubber sheet and a heat-resistant film, and the protection step In this case, the heat-resistant film is protected so as to cover the second pedestal member with the cover while bringing the heat-resistant film into contact with the second pedestal member.

  The polymerization of the rubber sheet and the heat-resistant film includes that the rubber sheet is coated with the heat-resistant film.

  According to the sixth feature, since the heat-resistant film is in contact with the second pedestal member and protected by the cover so as to cover the second pedestal member, the cover after the vulcanization molding of the tire, The frequency of close contact with the first pedestal member can be reduced.

  According to a seventh feature of the present invention, in addition to any one of the first to sixth features, the first base member is semi-vulcanized in advance before starting the vulcanization step. It is that.

  According to the seventh feature, since the first base member is semi-vulcanized in advance before starting the vulcanization step, the tire is being vulcanized and molded (specifically, the vulcanization of the raw tire). The fluidity of the first pedestal member (in the middle) (the fluidity of the rubber material constituting the first pedestal member) can be reduced, and the deformation of the pedestal for mounting the electronic component can be reduced.

  According to an eighth feature of the present invention, in addition to any one of the first to seventh features, the electronic component is attached to the mounting surface of the second pedestal member after the cover removing step is completed. And an electronic component mounting step for mounting.

  According to the invention of any one of claims 1 to 8, even if the bladder is pressed against the second pedestal member made of a rigid material during vulcanization molding of the tire. When the electronic component mounting base is attached to the inner liner, the bladder exhibits a function as a cushioning material by elastic deformation of the cover, and a large load does not act locally on the bladder. Can be sufficiently prevented from being damaged.

  According to the invention of any one of claims 6 to 8, since the frequency of contact between the cover and the first pedestal member after vulcanization molding of the tire can be reduced, the pedestal It is possible to prevent the post-processing after manufacturing the attached tire from becoming complicated.

  According to invention of Claim 7 or Claim 8, the fluidity | liquidity of the said 1st base member in the vulcanization molding of the said tire can be reduced, and the deformation | transformation of the said electronic component attachment base can be made small. For this reason, even if the travel distance or travel time of the tire with the pedestal becomes longer, adhesion peeling between the pedestal for mounting the electronic component and the electronic component is less likely to occur.

  An embodiment of the present invention will be described with reference to FIGS. 1 to 3.

  Here, FIG. 1 and FIG. 2 are diagrams for explaining a method for manufacturing a tire with a pedestal according to an embodiment of the present invention, and FIG. 3A is an electronic component according to the embodiment before being attached to the inner liner. FIG. 3B is a view showing the mounting base, and FIG. 3B is a view showing the electronic component mounting base according to the embodiment after being attached to the inner liner, and FIG. 4 is an embodiment of the present invention. It is a fragmentary sectional view of the tire with a base concerning.

  As shown in FIG. 3, a pedestal-equipped tire 1 according to an embodiment of the present invention is attached to a tire 5 that is assembled to a rim 3 and can be filled with air as a working gas, and an inner liner 7 in the tire 5. The electronic component mounting base 9 and a transponder 11 mounted on the electronic component mounting base 9 are provided.

  The specific configuration of the tire 5 in the pedestal-equipped tire 1 is as follows.

  That is, the tire 5 includes a carcass 13 that is a skeleton member, and the carcass 13 has a toroidal cross-sectional shape. Further, bead fillers (bead portions) 15 that can be fitted to the rim 3 are integrally provided on both edge portions (one edge portion and the other edge portion) of the carcass 13, and each bead filler 15 has a bead core 17. Are built in. A groundable tread 19 is integrally provided on the outer peripheral surface of the carcass 13, and a belt 21 that reinforces the carcass 13 is interposed between the tread 19 and the carcass 13.

  The inner liner 7 is integrally provided on the inner side surface (including the inner peripheral surface) of the carcass 13 to prevent leakage of air filled in the tire 5. Further, side treads 23 that protect the carcass 13 are provided between one bead filler 15 and one end of the carcass 13 on the outer surface of the carcass 13 and between the other bead filler 15 and the other end of the carcass 13. It is provided integrally.

  The specific structure of the electronic component mounting base 9 in the tire with base 1 is as follows.

  That is, as shown in FIGS. 3 (a) and 3 (b), the electronic component mounting base 9 is for mounting the transponder 11 to the tire 5, and has a rubber material on one side (lower side in FIG. 3). And a second pedestal member 27 that is superposed on the first pedestal member 25 and made of an aluminum material (one of rigid materials). . In addition, you may use another rigid material, such as hard resin, for the constituent material of the 2nd base member 27 instead of an aluminum material.

The first pedestal member 25 has a first attachment surface 25 a and a superposition surface 25 b that can be attached to the inner liner 7 in the tire 5, and the second pedestal member 27 is a second attachment surface to which the transponder 11 can be attached. 27a and a polymerization surface 27b. Further, the modulus (elastic modulus) of the second pedestal member 27 is made higher than the modulus of the first pedestal member 25. The outer shape of the first pedestal member 25 is larger than the outer shape of the second pedestal member 27.
Before the electronic component mounting base 9 is attached to the inner liner 7, the first base member 25 is made of a semi-vulcanized rubber material. Here, the semi-vulcanized rubber is a rubber in which a crosslinking reaction has not sufficiently occurred, and 30% to 80% (30% or more) when the modulus of the rubber at the time of full vulcanization is 100%. And a modulus rubber of 80% or less). Semi-vulcanized rubber can be produced by shortening the vulcanization time, lowering the vulcanization temperature, or changing the composition of rubber chemicals that contribute to the vulcanization speed. .

  The specific configuration of the transponder 11 in the pedestal tire 1 is as follows.

  That is, the transponder 11 is an electronic component that is used to monitor the internal pressure and the internal temperature of the tire 5, and is attached to the second attachment surface 27a of the second pedestal member 27 by adhesion with an adhesive such as cyanoacrylate, for example. ing. In addition, when the 2nd base member 27 consists of aluminum materials, you may make it attach to the 2nd attachment surface 27a of the 2nd base member 27 by mechanical attachment means, such as a screw.

  Then, the manufacturing method of the tire with a base concerning the embodiment of the present invention is explained with reference to Drawing 1 (a) (b) (c) and Drawing 2 (a) (b) (c).

  The manufacturing method of the tire with a pedestal according to the embodiment of the present invention is a method for manufacturing the tire with a pedestal 1, and includes the following (i) a pedestal member bonding step, (ii) a pedestal setting step, iii) a protection step, (iv) a vulcanization step, (v) a cover removal step, and (vi) an electronic component attachment step.

(i) Base member adhesion step As shown in FIG. 1A, a vulcanized adhesive is applied to at least one of the polymerization surfaces 25b of the first base member 25 and the polymerization surface 27b of the second base member 27. Then, by overlapping the first pedestal member 25 and the second pedestal member 27, the overlapping surface 25b of the first pedestal member 25 and the overlapping surface 27b of the second pedestal member 27 are bonded.

(ii) Pedestal setting step After the (i) pedestal member adhering step is completed, as shown in FIG. 1 (b), the first pedestal member 25 is attached to the inner liner 7 in the green tire 5 'to obtain an electronic component. The mounting base 9 is set on the inner liner 7.

(iii) Protection process After the (ii) pedestal setting process is completed, as shown in FIG. 1 (c), a heat-resistant film is used by using an elastically deformable cover 33 formed by polymerizing a rubber sheet 29 and a heat-resistant film 31. The cover 31 protects the second pedestal member 27 so as to cover the second pedestal member 27 while contacting the second pedestal member 27. Here, the heat-resistant film 31 is a film made of a material that can withstand high temperature and pressure, such as polyethylene terephthalate and cellophane. The polymerization of the rubber sheet 29 and the heat-resistant film 31 includes that the rubber sheet 29 is coated with the heat-resistant film 31. Further, the rubber sheet 29 may be vulcanized or unvulcanized, and the heat-resistant film 31 may be omitted from the cover 33.

(iv) Vulcanization step After the (iii) protection step is completed, the raw tire 5 'is vulcanized while being pressurized from the inside of the raw tire 5' by a bladder 35 as shown in FIG. 2 (a). Thus, the tire 5 having a predetermined product shape is vulcanized from the raw tire 5 ′, and the first pedestal member 25 is bonded to the inner liner 7 by a crosslinking reaction.

  On the other hand, the first pedestal member 25 is semi-vulcanized in advance before the (iv) vulcanization step is started. In other words, before the electronic component mounting base 9 is attached to the inner liner 7, the first base member 25 is made of a semi-vulcanized rubber material. Here, the semi-vulcanized rubber is a rubber in which a crosslinking reaction has not sufficiently occurred, and 30% to 80% (30% or more) when the modulus of the rubber at the time of full vulcanization is 100%. And a modulus rubber of 80% or less). Semi-vulcanized rubber can be produced by shortening the vulcanization time, lowering the vulcanization temperature, or changing the composition of rubber chemicals that contribute to the vulcanization speed. . In addition, before the said (iv) vulcanization process is started, the 1st base member 25 may be unvulcanized | cured or may be fully vulcanized.

(v) Cover Removal Step After the (iv) vulcanization step is completed, the cover 33 is removed from the electronic component mounting base 9 as shown in FIG.

(vi) Electronic component attaching step After the (v) cover removing step is completed, as shown in FIG. 2 (c), the transponder 11 is attached to the second base member 27 by bonding with an adhesive such as cyanoacrylate. It attaches to the attachment surface 27a. When the second pedestal member 27 is made of an aluminum material, the second pedestal member 27 may be attached to the second attachment surface 27a of the second pedestal member 27 by mechanical attachment means such as screws.

  The manufacture of the pedestal-equipped tire 1 is thus completed.

  Here, in the method of manufacturing a tire with a pedestal according to the embodiment of the present invention, the order of the steps (ii) pedestal setting step and (iii) protection step may be reversed. Further, the (i) pedestal member bonding step is omitted, and the first pedestal member 25 is vulcanized during the (iv) vulcanization step so that the overlapping surface 25b of the first pedestal member 25 and the second pedestal member are vulcanized. 27 polymerization surfaces 27b may be bonded by a crosslinking reaction.

  Next, the operation and effect of the embodiment of the present invention will be described.

  Since pressure is applied from the inside of the raw tire 5 ′ by the bladder 35 and the raw tire 5 ′ is vulcanized, it is protected so as to cover the second pedestal member 27 by the elastically deformable cover 33. Even when the bladder 35 is pressed against the second pedestal member 27 made of a rigid material such as an aluminum material during the vulcanization molding, the cover 33 is elastically deformed so that the function as a buffer material is exerted. Large load does not work.

  Further, since the heat-resistant film 31 is in contact with the second pedestal member 27 and protected by the cover 33 so as to cover the second pedestal member 27, the cover 33 and the first pedestal member 25 after the vulcanization molding of the tire 5 are performed. The contact frequency (the contact frequency between the rubber sheet 29 and the first pedestal member 25) can be reduced.

  Furthermore, since the first pedestal member 25 is semi-vulcanized in advance before the (iv) vulcanization step is started, the fluidity (specifically, the first pedestal member 25 during the vulcanization molding of the tire 5). Therefore, the deformation of the electronic component mounting base 9 can be reduced by reducing the fluidity of the rubber material constituting the first base member 25.

  Therefore, according to the embodiment of the present invention, even when the bladder 35 is pressed against the second pedestal member 27 side made of a rigid material such as an aluminum material during the vulcanization molding of the tire 5, the cover 33 is elastically deformed. Since the function as a cushioning material is exhibited by this, and a large load does not act locally on the bladder 35, it is sufficient that the bladder 35 is damaged when the electronic component mounting base 9 is mounted on the inner liner 7. Can be suppressed.

  In addition, since the frequency of contact between the cover 33 and the first pedestal member 25 after the vulcanization molding of the tire 5 can be reduced, it is possible to prevent the post-processing after the manufacture of the pedestal-equipped tire 1 from becoming complicated.

  Furthermore, since the fluidity of the first pedestal member 25 can be reduced during the vulcanization molding of the tire 5 and the deformation of the electronic component mounting pedestal 9 can be reduced, the travel distance or travel time of the tire with pedestal 1 can be reduced. Even if the length becomes longer, adhesion peeling between the electronic component mounting base 9 and the transponder 11 becomes difficult to occur.

  The present invention can be implemented in various modes other than the above-described embodiments. Further, the scope of rights encompassed by the present invention is not limited to these embodiments.

(Example)
Examples of the present invention will be briefly described.

While vulcanizing and molding a passenger car tire of size 205 / 55R16, a base for electronic component mounting (a base made by superposing a first base member made of rubber material and a second base member made of aluminum material on the inner liner of the passenger car tire) ) Were bonded by a crosslinking reaction. Then, when the number of damages of the bladder per 20 vulcanization moldings and the number of adhesions (contact frequency) between the rubber sheet and the electronic component mounting base per 20 vulcanization moldings are as shown in Table 1. Result.

  That is, as shown in Example 1, Example 2, Comparative Example 1, and Comparative Example 2, damage to the bladder per 20 vulcanization moldings by protecting the cover so as to cover the second pedestal member The number of times decreases. Further, as shown in Example 1 and Example 2, the heat-resistant film is brought into contact with the second pedestal member, and protected by the cover so as to cover the second pedestal member, 20 times of vulcanization molding The number of close contact between the hit rubber sheet and the electronic component mounting base is reduced.

It is a figure explaining the manufacturing method of the tire with a base concerning an embodiment. It is a figure explaining the manufacturing method of the tire with a base concerning an embodiment. FIG. 3A is a view showing an electronic component mounting base according to the embodiment before being attached to the inner liner, and FIG. 3B is an electronic component attaching according to the embodiment after being attached to the inner liner. It is a figure which shows a pedestal. It is a fragmentary sectional view of the tire with a base concerning an embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tire with a base 5 Tire 5 'Raw tire 7 Inner liner 9 Base 11 for electronic component attachment Transponder 25 First base member 25a First attachment surface 25b Superposition surface 27 Second base member 27a Second attachment surface 27b Superposition surface 29 Rubber sheet 31 heat resistant film 33 cover 35 bladder

Claims (8)

A manufacturing method of a tire with a base for manufacturing a tire with a base in which an electronic component mounting base formed by superposing a first base member made of a rubber material and a second base member made of a rigid material is attached to an inner liner of the tire In
A first base member is affixed to an inner liner in a raw tire, and a base setting step for setting the electronic component mounting base to the inner liner;
After the pedestal setting step is completed, a protection step of protecting the second pedestal member with an elastically deformable cover;
After the protection step is completed, the tire having a predetermined product shape is vulcanized and molded from the raw tire by vulcanizing the raw tire while being pressurized from the inside of the raw tire by a bladder. A vulcanization step in which a single seat member is bonded to the inner liner by a crosslinking reaction;
A cover removing step of removing the cover from the electronic component mounting base after the vulcanization step is completed;
The manufacturing method of the tire with a base characterized by comprising. A manufacturing method of a tire with a base for manufacturing a tire with a base in which an electronic component mounting base formed by superposing a first base member made of a rubber material and a second base member made of a rigid material is attached to an inner liner of the tire In
A protection step of protecting the second pedestal member with an elastically deformable cover;
After the protection step is completed, the first pedestal member is attached to an inner liner in a raw tire, and a pedestal setting step for setting the electronic component mounting pedestal to the inner liner;
After the pedestal setting step is completed, the tire having a predetermined product shape is vulcanized and molded from the raw tire by vulcanizing the raw tire while being pressurized from the inside of the raw tire by a bladder. A vulcanization step of bonding the first base member to the inner liner by a crosslinking reaction;
A cover removing step of removing the cover from the electronic component mounting base after the vulcanization step is completed;
The manufacturing method of the tire with a base characterized by comprising. Before starting the pedestal setting step, a vulcanized adhesive is applied to at least one of the overlapping surfaces of the first pedestal member and the overlapping surface of the second pedestal member, and the first pedestal member and the A base member adhering step for adhering the overlapping surface of the first base member and the overlapping surface of the second base member by polymerizing the second base member;
The manufacturing method of the tire with a base of Claim 1 characterized by the above-mentioned. Before starting the protection step, a vulcanized adhesive is applied to at least one of the overlapping surface of the first pedestal member and the overlapping surface of the second pedestal member, and the first pedestal member and the first A base member adhering step for adhering the overlapping surface of the first base member and the overlapping surface of the second base member by polymerizing two base members;
The manufacturing method of the tire with a base of Claim 2 characterized by the above-mentioned.   The first pedestal member is vulcanized during the vulcanization step, and the overlapped surface of the first pedestal member and the overlapped surface of the second pedestal member are bonded by a crosslinking reaction. The manufacturing method of the tire with a base of Claim 2.   The cover is formed by polymerizing a rubber sheet and a heat-resistant film, and in the protection step, the cover is configured to contact the second pedestal member with the heat-resistant film in contact with the second pedestal member. The method for manufacturing a tire with a pedestal according to any one of claims 1 to 5, wherein the tire is protected so as to cover it.   The pedestal-equipped tire according to any one of claims 1 to 6, wherein the first pedestal member is semi-vulcanized in advance before the vulcanization step is started. Production method. An electronic component attaching step of attaching an electronic component to the attachment surface of the second pedestal member after the cover removing step is completed;
The manufacturing method of the tire with a pedestal according to any one of claims 1 to 7, characterized by comprising:

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