WO2017209057A1 - Procédé pour fabriquer un pneu et appareil pour fabriquer un pneu - Google Patents

Procédé pour fabriquer un pneu et appareil pour fabriquer un pneu Download PDF

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Publication number
WO2017209057A1
WO2017209057A1 PCT/JP2017/019931 JP2017019931W WO2017209057A1 WO 2017209057 A1 WO2017209057 A1 WO 2017209057A1 JP 2017019931 W JP2017019931 W JP 2017019931W WO 2017209057 A1 WO2017209057 A1 WO 2017209057A1
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WO
WIPO (PCT)
Prior art keywords
tire
tread rubber
vulcanization mold
mold
unvulcanized tread
Prior art date
Application number
PCT/JP2017/019931
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English (en)
Japanese (ja)
Inventor
悠介 田口
啓介 富永
Original Assignee
株式会社ブリヂストン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Publication of WO2017209057A1 publication Critical patent/WO2017209057A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould

Definitions

  • the present invention relates to a tire manufacturing method and a tire manufacturing apparatus.
  • a tire is formed by winding and laminating a sheet of unvulcanized tread rubber on the outer peripheral surface of an unvulcanized green case formed by laminating members such as carcass and belt.
  • An unvulcanized tread is then formed, and then the obtained unvulcanized tire (also referred to as a green tire) is vulcanized in a vulcanization mold.
  • a dread pattern such as a groove
  • the formation of a dread pattern is caused by causing the tread rubber to flow by heat at the time of vulcanization in the vulcanization process, so that the tread pattern inside the vulcanization mold, etc. This is done by transferring the molding surface defining the outer shape of the tire to the tread.
  • large tires such as construction and mining vehicle tires (OR tires)
  • OR tires construction and mining vehicle tires
  • the construction and mining vehicle Since the tire for use is large and the groove volume of the tread is large, the convex part for forming the groove in the molding surface of the vulcanization mold does not enter or break in the desired posture with respect to the tread rubber.
  • a tread is formed on an unvulcanized green case, and then a groove corresponding to the tread pattern is formed on the tread (unvulcanized). Before being put in, it is formed by grinding in advance (for example, see Patent Document 1).
  • an object of the present invention is to provide a tire manufacturing method and a tire manufacturing apparatus capable of improving the efficiency of the tire manufacturing process.
  • the tire manufacturing method according to the present invention is formed by an outer surface of a green case disposed between a vulcanization mold and a bladder located inside the vulcanization mold, and a molding surface of the vulcanization mold.
  • the tire manufacturing apparatus of the present invention includes a vulcanization mold having a molding surface that defines the outer shape of the tire, a bladder that can expand and contract so as to press the tire radially outward, An extrusion molding unit for extruding sulfur tread rubber, and a tire manufacturing apparatus comprising:
  • the vulcanization mold includes a joint that can be connected to the extrusion molding section, and an inflow passage through which unvulcanized tread rubber flows from the outside to the inside of the vulcanization mold.
  • FIG. 1 is a side view with a part cut away, schematically showing a tire manufacturing apparatus according to an embodiment of the present invention. It is sectional drawing which expands and shows a part of tire manufacturing apparatus shown in FIG.
  • FIG. 1 is a side view with a part cut away schematically showing a tire manufacturing apparatus according to an embodiment of the present invention.
  • FIG. 2 is an enlarged sectional view showing a part of the tire manufacturing apparatus shown in FIG.
  • the tire manufacturing apparatus can also be suitably used to implement the tire manufacturing method according to an embodiment of the present invention.
  • the tire manufacturing apparatus 1 shown in FIG. 1 includes a vulcanizing device section 3 and an extrusion molding section 4 each having a vulcanization mold 31 and a bladder 32, and includes a vulcanization mold 31, a bladder 32 and an extrusion molding section. 4 is combined, and the green case 2 is disposed inside the vulcanization mold 31.
  • the tire manufactured by the tire manufacturing method and manufacturing apparatus of the present invention can be a large tire such as a tire for construction and mining vehicles.
  • the tire 2 is an annular tire body having a structure that serves as a base of the tire 2 and is a tread as a land portion provided with various grooves extending in the tire circumferential direction and the tire width direction, and a portion excluding the tread. It consists of parts.
  • this tire 2 prepares separately the green case corresponding to a tire main-body part, and the unvulcanized tread rubber which forms a tread, These are vulcanized
  • the green case 2 includes, for example, a carcass having a radial structure extending in a toroidal shape between a pair of bead portions, and a belt disposed on the outer side in the tire radial direction of the carcass in the tread portion.
  • the tread rubber is basically not provided on the outer peripheral surface of the green case 2, a thin tread rubber can be provided as necessary.
  • the green case 2 is not vulcanized but is in an unvulcanized state, a semi-vulcanized state in which vulcanization is separately performed halfway before being loaded into the vulcanizer unit 3, or vulcanization. Although it is possible to use a completely vulcanized state, it is preferable to use the green case 2 before vulcanization from the viewpoint of improving the efficiency of the production process.
  • the unvulcanized tread rubber is a rubber that constitutes the tread of the tire 2 by being vulcanized, and various rubbers are selected according to the intended performance of the tire, and various additives are contained. ing.
  • the unvulcanized tread rubber is not limited as long as it has a flow characteristic that can be extruded and can be vulcanized.
  • natural rubber, diene series such as IR, SBR, and BR Rubber or rubber such as butyl rubber, halogenated butyl rubber, non-diene rubber such as EPDM, carbon black, oil, anti-aging agent, processing aid, softener, plasticizer, vulcanizing agent, vulcanization accelerator,
  • Various additives such as a vulcanization retarder can be appropriately contained and configured.
  • the tire manufacturing apparatus 1 includes a vulcanizing unit 3 having a vulcanizing mold 31 and a bladder 32, and an extrusion molding unit 4.
  • the vulcanization mold 31 of the vulcanization unit 3 has a molding surface 31 s that defines the outer surface shape of the tire 2 such as a tread pattern on the inner surface of the vulcanization mold 31.
  • the molding surface 31s of the metal mold 31 is transferred to unvulcanized tread rubber injected into the metal mold 31 so that various grooves are formed on the outer surface of the tire 2 after vulcanization.
  • a tread pattern including the like can be formed.
  • the vulcanization mold 31 has a joint portion 33 that can be connected to the extrusion molding portion 4 to be described later, and an inflow passage 34 through which unvulcanized tread rubber flows from the outside to the inside of the vulcanization die 31. is doing.
  • the direction that becomes the width direction of the tire 2 is the mold width direction
  • the direction that becomes the radial direction of the tire 2 is the mold radial direction.
  • the direction used as the circumferential direction of the tire 2 is called a metal mold
  • the vulcanization mold 31 can be divided into a plurality of parts in the mold width direction or the mold circumferential direction.
  • the vulcanization mold 31 is divided into two in the mold width direction.
  • it has a structure composed of a lower mold 31a and an upper mold 31b. Inside the lower mold 31a and the upper mold 31b, a lower mold tire molded part 31c and an upper mold tire molded part 31d are formed by dividing the tire molded part into two parts, and molded on the inner surface of each molded part. A surface 31s is provided.
  • the lower mold tire molding part 31c and the upper mold tire molding part 31d can also be constituted by a plurality of division molds divided in the mold circumferential direction, thereby facilitating the assembly of the vulcanization mold 31. Further, the vulcanization mold 31 can be easily removed from the tire 2 after the green tire 2 is vulcanized.
  • the vulcanization mold 31 has a joint portion 33 that can be connected to an extrusion molding portion 4 to be described later.
  • the vulcanization die 31 is in the upper die 31b.
  • the joining portion 33 has a corresponding shape so that one end on the inflow passage 34 side, which will be described later, and the other end on the extrusion portion 4 side can be connected to the inflow passage 34 and the discharge port of the extrusion portion 4, respectively.
  • the joint portion 33 is hollow so that the unvulcanized tread rubber extruded by the extrusion molding portion 4 can pass through the inside, and can be kept warm during transportation of the unvulcanized tread rubber. Temperature control means.
  • the vulcanization mold 31 has an inflow passage 34 through which unvulcanized tread rubber flows from the outside to the inside of the vulcanization mold 31. Specifically, one end of the inflow passage 34 (inside of the vulcanization mold 31) opens into a gap (cavity) formed inside the vulcanization mold 31 and the other end of the inflow passage 34 (vulcanization). The outer side of the mold 31 is formed so as to be connectable to the joint 33.
  • the inflow passage 34 is a single unbranched passage, but the mold circumferential direction in the vulcanization mold 31 opens a plurality of inflow passages 34 into the vulcanization mold 31. It can also be branched to.
  • a plurality of inflow passages 34 that are not branched can be provided in the vulcanization mold 31 by branching the joint portion 33.
  • one end (opening portion) of the inflow passage 34 is positioned on the molding surface 31s corresponding to the outer portion (buttress portion) in the tire width direction of the tread (unvulcanized from the side surface of the tire 2).
  • the tread rubber is injected), but it can also be positioned on the molding surface 31s corresponding to the tire radial outer portion of the tread (unvulcanized tread rubber is injected from the tire radial outer side of the tire 2).
  • one end (opening) of the inflow passage 34 can be positioned on the molding surface 31s corresponding to the land portion or groove of the tread, the one end is positioned on the molding surface 31s corresponding to the land portion.
  • Inflow path traces (gate marks) that can be formed in the tread of the tire 2 can be easily processed, which is preferable.
  • the vulcanization mold 31 has an exhaust port for discharging air staying in the vulcanization mold 31 from the inside of the vulcanization mold 31 to the outside, and a temperature adjustment path for flowing a heating medium and a cooling medium. Can be provided.
  • the tire manufacturing apparatus 1 includes a bladder 32 that can expand and contract so as to press the tire 2 radially outward.
  • the vulcanization mold 31 is provided at the center of the lower mold 31 a so as to expand and contract in the mold radial direction of the vulcanization mold 31.
  • the bladder 32 is formed in a bag shape having airtightness, with one end held by the lower clamp ring 32a and the other end held by the upper clamp ring 32b.
  • the lower clamp ring 32a and the upper clamp ring 32b are attached to the center post 32c so that the thermal fluid supplied to the inside of the bladder 32 does not leak to the outside.
  • thermal fluid is supplied into the bladder 32 through a thermal fluid supply path (not shown) provided in the center post 32c.
  • the bladder 32 expands with the supply of the thermal fluid, and can press the green case 2 from the inside toward the outside.
  • the bladder 32 can be made of, for example, a butyl rubber composition having a low gas permeability.
  • the upper mold 31 b of the vulcanization mold 31 is fitted to the lower mold 31 a, and the upper mold 31 b is brought into close contact with each other.
  • a press machine 35 is provided for removal.
  • the extrusion molding portion 4 can be arranged adjacent to the vulcanization mold 31.
  • the extrusion molding unit 4 includes an extrusion molding machine 41 for kneading and extruding a rubber material, a metering pump connected to the leading end side in the extrusion direction of the extrusion molding machine 41, here a gear pump 42, and a tip. And a base 43 connected to the side.
  • the extrusion machine 41 includes a cylindrical barrel 41a, a hopper 41b connected to a supply port of the barrel, a screw 41c that kneads and feeds a rubber material, and a drive motor 41d that rotationally drives the screw 41c. Have.
  • a metering pump can be omitted.
  • the gear pump 42 has a pair of gears 42 a and has a function of feeding the rubber material toward the outlet 43 toward the base 43.
  • the gears 42a are each driven to rotate by a gear pump drive motor 41d, and by setting their rotational speed to a predetermined rotational speed, the rubber material (unvulcanized tread rubber) can be quantitatively extruded.
  • a metering pump such as a gear pump
  • a flow meter for measuring the amount of fluid can be used with or without a pump.
  • the base 43 has a shape that allows the tip of the base 43 to be connected to the end of the joint 33 of the vulcanization mold 31 described above, and the unvulcanized tread rubber supplied from the gear pump 42 to the base 43 is connected to the joint 43. 33, extruded into the vulcanization mold 31 through the inflow passage 34. In addition, it is also possible to directly connect to the joint without providing either one or both of the base and the gear pump.
  • one extrusion molding unit 4 is provided for the vulcanization mold 31, but a plurality of extrusion molding units 4 may be provided as necessary.
  • the tire manufacturing apparatus 1 includes a vulcanization mold 31 and an extrusion molding unit 4, and the vulcanization mold 31 includes a joint 33 that can be connected to the extrusion molding unit 4, and an unvulcanized product. And an inflow passage 34 for allowing the tread rubber to flow from the outside to the inside of the vulcanization mold 31, so that the outer surface of the green case 2 disposed inside the vulcanization mold 31 and the vulcanization mold 31 If a tread is formed by injecting unvulcanized tread rubber, which is extruded using the extrusion molding portion 4, into the gap portion 31 e formed by the molding surface 31 s through the inflow passage 34, the vulcanized gold in the production of the conventional tire Since the above-mentioned process performed before loading the green tire into the mold 31 can be omitted, the tire manufacturing process can be made more efficient.
  • the green case 2 when forming an unvulcanized tread rubber on the outer surface of the green case 2 inside the vulcanization mold 31, the green case 2 disposed inside the vulcanization mold 31. Can be pressed and supported by the bladder 32, for example, while assembling a large amount of rigid bodies inside the large green case 2 as compared with the case where the green case 2 is supported using a rigid body such as metal. There is no need to arrange the tires, and therefore the tire manufacturing process can be made more efficient. Further, since the bladder 32 can be expanded and contracted, the pressure on the green case 2 can be adjusted depending on the degree of injection of the unvulcanized tread rubber into the vulcanizing mold 31 and the uniformity of the tire 2 is reduced. The tire 2 can be manufactured without any problems.
  • the unvulcanized tread rubber is injected by extrusion of the extrusion molding portion 4, the temperature of the unvulcanized tread rubber is maintained directly from the extrusion molding portion 4. It can be poured into the vulcanization mold 31 in a fluid state without any problems.
  • the rubber composition is kneaded and extruded by an extrusion molding machine to pre-manufacture unvulcanized tread rubber as a separate intermediate member.
  • the use of the extrusion molding part 4 can improve the efficiency of the production process. As described above, according to the tire manufacturing apparatus 1, the tire manufacturing process can be made more efficient.
  • the gear pump 42 can quantitatively extrude unvulcanized tread rubber.
  • the end point of the injection of the unvulcanized tread rubber into the interior of the vulcanization mold 31 can be the time point when a predetermined amount of the unvulcanized tread rubber is extruded, and the accuracy of manufacturing the tire 2 is sufficiently high Can be improved.
  • the tire manufacturing method of the present embodiment includes an inflow passage 34 for allowing unvulcanized tread rubber to flow into the inside from the outside, and a vulcanizing mold 31 having a molding surface 31 s that defines the outer shape of the tire 2,
  • the tire 2 is manufactured by performing vulcanization molding using a bladder 32 that can expand and contract so as to press the tire 2 radially outward.
  • the green case 2 is disposed on the lower mold 31a with the upper mold 31b removed.
  • the bladder 32 is in a reduced diameter state.
  • the upper mold 31b and the lower mold 31a are closed to make the inside of the vulcanization mold 31 a closed space.
  • the joint portion 33 is connected to the inflow passage 34 of the upper mold 31 b, and the extruded portion 4 is connected to the joint portion 33.
  • the extrusion molding part 4 is connected to the joint part 33, it is preferable to prepare an unvulcanized tread rubber in a state where it can be extruded.
  • an amount of rubber material capable of forming a tread of at least one tire 2 and an additive added as necessary are prepared in a state where the extruded portion 4 can be filled and continuously extruded.
  • the green case 2 it is also possible to use a semi-vulcanized state or a vulcanized state after complete vulcanization.
  • Unvulcanized tread rubber extruded using the extrusion molding portion 4 is injected through the inflow passage 34 into the gap portion 31e formed by the molding surface 31s.
  • the bladder 32 is expanded (expanded) with respect to the green case 2 disposed inside the vulcanization mold 31 to press the green case 2 from the inside to the outside. Thereby, the green case 2 is shaped.
  • the unvulcanized tread rubber is extruded using the extrusion molding portion 4 and injected into the void portion 31 e inside the vulcanizing mold 31.
  • the unvulcanized tread rubber gradually fills the gap 31e while flowing, and a tread is formed while a predetermined tread pattern is formed by the molding surface 31s of the vulcanization mold 31. Therefore, while the unvulcanized tread rubber is injected into the gap portion 31e and vulcanized, the bladder 32 is expanded in diameter to press the green case 2 from the inner side in the tire radial direction to the outer side, for example.
  • the shape of the green case 2 is retained, and when the unvulcanized tread rubber is injected into the vulcanizing mold 31, the sidewall of the tire 2, for example, other than the gap 31e inside the vulcanizing mold 31 The unvulcanized tread rubber can be prevented from flowing into the portion. Further, when unvulcanized tread rubber is injected into the inside of the vulcanizing mold 31, it is possible to prevent the green case 2 from being deformed and the arrangement positions of the constituent members of the tire 2 from being displaced and the uniformity being lowered. Can do.
  • the end point of the injection of the unvulcanized tread rubber into the gap portion 31e can be the time when the inside of the vulcanization mold 31 reaches a predetermined pressure (for example, confirm by the internal pressure of the bladder) It is preferable that a predetermined amount of unvulcanized tread rubber be extruded from the extruded portion 4.
  • the bladder 32 is used to support the green case 2 from the inside.
  • the bladder 32 and the green case 2 may expand and deform over time due to heat during the injection of unvulcanized tread rubber. This is because the volume of the tread may fluctuate from a predetermined amount when extended.
  • the unvulcanized tread rubber and the green case 2 are vulcanized with the vulcanization mold 31 heated.
  • the tread made of the vulcanized rubber is vulcanized and bonded to the outer peripheral surface of the green case 2 integrally with the outer peripheral surface of the green case 2.
  • the extrusion molding portion 4 can be separated from the vulcanization mold 31.
  • a backflow prevention valve or the like is provided in the inflow passage 34 of the vulcanization mold 31. By providing the shut-off valve, the unvulcanized tread rubber can be prevented from backflow after the extrusion molding portion 4 is separated from the vulcanization mold 31.
  • the diameter of the expanded bladder 32 is reduced, the upper mold 31b of the vulcanizing mold 31 is separated from the lower mold 31a, and the vulcanized tire 2 is Take out. Thereafter, for example, spew (formed by the tread rubber flowing into the exhaust port of the vulcanization mold 31 together with the air inside the vulcanization mold 31 when the tire 2 is vulcanized) existing on the surface of the tire 2.
  • spew formed by the tread rubber flowing into the exhaust port of the vulcanization mold 31 together with the air inside the vulcanization mold 31 when the tire 2 is vulcanized
  • the tire 2 is completed through steps such as removal.
  • the internal pressure of the bladder 32 is set to 0.02 to 0.10 MPa, for example, to maintain the shape of the green case 2 at the start of injection of the unvulcanized tread rubber into the gap portion 31e.
  • the green case 2 is gradually increased so as not to be deformed by the pressure of the sulfur tread rubber.
  • the internal pressure of the bladder 32 is applied to the outer surface of the tread as described above. In order to sufficiently transfer and form the shape (tread pattern), for example, 1.5 to 3.0 MPa.
  • the process performed before loading the green tire 2 into the vulcanizing mold 31 is performed on the outer surface of the green case 2. Since the unvulcanized tread rubber laminating step and the step of grinding the groove on the tread surface can be omitted, the tire manufacturing step can be made more efficient. Specifically, the extruded portion 4 is used to extrude a gap portion 31e formed by the outer surface of the green case 2 disposed inside the vulcanizing mold 31 and the molding surface 31s of the vulcanizing die 31.
  • the tire manufacturing process can be made more efficient.
  • a bladder 32 is used, and the green case 2 disposed inside the vulcanizing mold 31 can be pressed and supported by the bladder 32. Compared to the case where the green case 2 is supported using a rigid body, it is not necessary to assemble and arrange a large amount of rigid bodies inside the large-scale green case 2, and therefore the tire manufacturing process can be made more efficient. .
  • the bladder 32 can be expanded and contracted, the pressure on the green case 2 can be adjusted depending on the degree of injection of the unvulcanized tread rubber into the vulcanizing mold 31 and the uniformity of the tire 2 is reduced.
  • the tire 2 can be manufactured without any problems.
  • the unvulcanized tread rubber is injected by extrusion of the extrusion molding portion 4, the temperature of the unvulcanized tread rubber is maintained directly from the extrusion molding portion 4. It can be poured into the vulcanization mold 31 in a fluid state without any problems.
  • the rubber composition is kneaded and extruded by the extrusion molding machine 41, and unvulcanized tread rubber as a separate intermediate member is manufactured in advance. Or a large amount of unvulcanized tread rubber cannot be injected into the vulcanization mold 31 at once.
  • the use of the extrusion molding unit 4 can improve the efficiency of the manufacturing process. it can. As mentioned above, according to the manufacturing method of this tire 2, a tire manufacturing process can be made efficient.
  • the manufacturing method and tire manufacturing apparatus of this invention are not limited to the said example, A change can be added suitably.
  • the tire manufacturing method and tire manufacturing apparatus of the present invention are preferably applied to large tires such as construction and mining vehicle tires, but can also be applied to tires other than the large tires.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Tyre Moulding (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un pneu et un appareil pour fabriquer un pneu pouvant rendre plus efficace une étape de fabrication de pneu. Le procédé de fabrication d'un pneu selon la présente invention comprend : une étape d'injection de caoutchouc de bande de roulement non vulcanisé, qui est extrudée à l'aide d'une unité de moulage par extrusion, dans une partie à espace formée par une surface externe d'un bandage cru disposé entre un moule de vulcanisation et une vessie positionnée à l'intérieur du moule de vulcanisation et par une surface de moulage du moule de vulcanisation ; et une étape de vulcanisation du caoutchouc de bande de roulement non vulcanisé après injection du caoutchouc de bande de roulement non vulcanisé dans la partie à espace. L'appareil de fabrication d'un pneu selon la présente invention est pourvu d'un moule de vulcanisation présentant une surface de moulage, une vessie diamétralement expansible et rétractable et une unité de moulage par extrusion qui extrude le caoutchouc de bande de roulement non vulcanisé. Le moule de vulcanisation comprend : une partie de liaison pouvant être raccordée à l'unité de moulage par extrusion ; et une voie d'entrée qui amène le caoutchouc de bande de roulement non vulcanisé à s'écouler depuis l'extérieur vers l'intérieur du moule de vulcanisation.
PCT/JP2017/019931 2016-06-02 2017-05-29 Procédé pour fabriquer un pneu et appareil pour fabriquer un pneu WO2017209057A1 (fr)

Applications Claiming Priority (2)

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JP2016-111166 2016-06-02
JP2016111166A JP2017217755A (ja) 2016-06-02 2016-06-02 タイヤの製造方法およびタイヤの製造装置

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WO2017209057A1 true WO2017209057A1 (fr) 2017-12-07

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50138073A (fr) * 1974-04-22 1975-11-04
JPS5825949A (ja) * 1981-08-07 1983-02-16 Sumitomo Rubber Ind Ltd タイヤの製造方法
JP2011031452A (ja) * 2009-07-31 2011-02-17 Bridgestone Corp 更生タイヤ製造方法、更生タイヤ製造用モールド及び加硫装置
JP2013126750A (ja) * 2011-12-19 2013-06-27 Bridgestone Corp タイヤの製造方法
JP2015205492A (ja) * 2014-04-23 2015-11-19 横浜ゴム株式会社 空気入りタイヤの製造方法および製造装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50138073A (fr) * 1974-04-22 1975-11-04
JPS5825949A (ja) * 1981-08-07 1983-02-16 Sumitomo Rubber Ind Ltd タイヤの製造方法
JP2011031452A (ja) * 2009-07-31 2011-02-17 Bridgestone Corp 更生タイヤ製造方法、更生タイヤ製造用モールド及び加硫装置
JP2013126750A (ja) * 2011-12-19 2013-06-27 Bridgestone Corp タイヤの製造方法
JP2015205492A (ja) * 2014-04-23 2015-11-19 横浜ゴム株式会社 空気入りタイヤの製造方法および製造装置

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