WO2010150826A1 - 加硫タイヤの製造方法、及び、加硫装置 - Google Patents
加硫タイヤの製造方法、及び、加硫装置 Download PDFInfo
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- WO2010150826A1 WO2010150826A1 PCT/JP2010/060676 JP2010060676W WO2010150826A1 WO 2010150826 A1 WO2010150826 A1 WO 2010150826A1 JP 2010060676 W JP2010060676 W JP 2010060676W WO 2010150826 A1 WO2010150826 A1 WO 2010150826A1
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- vulcanization
- container
- gas
- vulcanizing
- opened
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0662—Accessories, details or auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0662—Accessories, details or auxiliary operations
- B29D2030/0666—Heating by using fluids
- B29D2030/0667—Circulating the fluids, e.g. introducing and removing them into and from the moulds; devices therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D30/00—Producing pneumatic or solid tyres or parts thereof
- B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
- B29D30/0601—Vulcanising tyres; Vulcanising presses for tyres
- B29D30/0662—Accessories, details or auxiliary operations
- B29D2030/0675—Controlling the vulcanization processes
Definitions
- the present invention relates to a method for manufacturing a vulcanized tire and a vulcanizing apparatus in which oil smoke is prevented from spreading in a building.
- JP-A-49-23284 discloses that oil smoke is forcibly discharged by evacuating while sending air into the kettle during vulcanization. Yes.
- Japanese Patent Laid-Open No. 9-38966 discloses that at the end of vulcanization, white smoke gas (gas containing oil smoke) is sucked from the inside of the kettle before opening the kettle of the vulcanizing apparatus, and further the atmosphere is introduced. Has been.
- an object of the present invention is to provide a method for producing a vulcanized tire and a vulcanizing device that suppresses the spread of oil and smoke to the surroundings when the vulcanization vessel is opened.
- a raw tire is vulcanized in a vulcanization container for tire vulcanization, and at least the vulcanization container is opened, and then the gas in the vulcanization container is sucked.
- the gas is not limited to air but may be other gas such as nitrogen gas.
- sucking a gas oily smoke floating in the gas is also sucked.
- the mold moves away from the vulcanized object from a contact arrangement state with respect to the vulcanized object during vulcanization. It means a state.
- the vulcanization container at least after the vulcanization container is opened, it means that it may be before the vulcanization container is opened. Further, in this specification, to suck the gas in the vulcanization container with the vulcanization container opened, the gas remaining in the vulcanization container or the gas flowing out from the opened part of the vulcanization container It means to suck.
- the form of opening the vulcanization vessel is not particularly limited, and may be a form of opening in the vertical direction or a form of opening in the left-right direction.
- the upper member of the vulcanization vessel is the lower member of the vulcanization vessel. May be hinged to be openable and closable.
- the gas in the vulcanization vessel is sucked after at least the vulcanization vessel is opened. Therefore, it is not necessary to supply a high-pressure gas during vulcanization and to exhaust heat during vulcanization, compared to exhausting the vulcanization vessel while supplying gas into the vulcanization vessel. Energy saving effect is obtained, and the oil smoke generated when the vulcanized tire is detached from the bladder or mold inner wall can be efficiently discharged from the inside of the vulcanization vessel. It is suppressed to spread.
- the oil smoke is mainly composed of oil and usually looks like white smoke.
- the manufacturing time can be shortened compared to the case where the gas in the vulcanization container is sucked only before the vulcanization container is opened and the atmosphere is further introduced into the vulcanization container.
- the oily smoke generated when it is detached from the inner wall of the mold can be efficiently discharged, and the oily smoke is suppressed from spreading around the vulcanization container.
- the gas in the vulcanization container when the gas in the vulcanization container is sucked, the gas is sucked from the center axis side of the vulcanized tire.
- the gas around the tire can be sucked much more evenly than when the gas is sucked from the tread side of the vulcanized tire.
- the suction center is located on the central axis in order to suck the gas evenly.
- the vulcanized tire is pulled upward from the bladder in the vulcanization vessel.
- a tire can be made to detach from a bladder by operation which opens a vulcanization container.
- a release agent is usually applied to at least one of the bladder surface and the tire inner surface, and when the tire is detached from the bladder after the vulcanization is completed, a large amount of oil smoke containing the release agent is generated. Therefore, the oil smoke generated when the tire is detached from the bladder can be discharged efficiently.
- the invention of the fourth aspect includes a vulcanizing container for vulcanizing unvulcanized rubber and a suction device for sucking the gas in the vulcanizing container after at least the vulcanizing container is opened.
- a vulcanizing container for vulcanizing unvulcanized rubber and a suction device for sucking the gas in the vulcanizing container after at least the vulcanizing container is opened.
- the vulcanization vessel may be opened before being opened.
- the form which opens a vulcanization container is not specifically limited, The form opened in an up-down direction may be sufficient, the form opened in a left-right direction may be sufficient, and also the upper member of a vulcanization container is a vulcanization container. It may be configured to be openable and closable by being hinged to the lower member.
- the gas in the vulcanization container is sucked by the suction device after at least the vulcanization container is opened. Therefore, compared with the case of exhausting the mold while supplying gas into the vulcanizing vessel during vulcanization, the vulcanizing apparatus can be simplified because no high-pressure gas is required. Therefore, it is possible to efficiently discharge oil smoke generated when the vulcanized rubber is detached from the bladder or the mold inner wall. In addition, the manufacturing time can be shortened compared to the case where the gas in the vulcanization container is sucked only before the vulcanization container is opened and the atmosphere is further introduced into the vulcanization container. In addition, there is an effect that it is possible to efficiently discharge the oil smoke generated when it is detached from the inner wall of the mold.
- the apparatus further includes a control unit that controls the suction unit so that the suction of the gas is started after the vulcanization vessel is opened. Thereby, the operator does not need to perform the gas suction start operation by the suction machine.
- the invention of a sixth aspect is the hood according to the invention of the fourth aspect or the invention of the fifth aspect, wherein the vulcanization vessel is provided at least on the upper portion of the vulcanization vessel and covers at least a part of the vulcanization vessel from the outside.
- a suction part for sucking the gas in the hood part is provided at least on the upper portion of the vulcanization vessel and covers at least a part of the vulcanization vessel from the outside.
- the invention of a seventh aspect includes a gantry part constituting the vulcanization container according to any one of the fourth to sixth aspects of the invention, and the gantry part has a gantry part when the vulcanization container is opened.
- An air curtain forming part for partitioning the inside of the vulcanization container from the external space by an air curtain is provided.
- the oil curtain even if the vulcanization vessel is opened, the oil curtain further suppresses the oil smoke from spreading around.
- a method for producing a vulcanized tire and a vulcanizing apparatus that suppresses the spread of oil smoke to the surroundings when the vulcanization container is opened can be obtained.
- FIG. 1 It is a schematic diagram which shows the suction system of the suction line provided in the vulcanizer which concerns on one Embodiment of this invention, and the gas supply system to an air curtain formation part. It is sectional drawing explaining the branch pipe branched from the cylinder part and the cylinder part with the vulcanization apparatus which concerns on one Embodiment of this invention. It is a perspective view which shows the vacuum apparatus of the vulcanizer which concerns on one Embodiment of this invention. It is a perspective view showing the 2nd vacuum device of the vulcanizer concerning one embodiment of the present invention. It is explanatory drawing explaining the structure of the modification of the vulcanizer which concerns on one Embodiment of this invention.
- a vulcanizing apparatus 10 includes a vulcanization molding machine 12 for vulcanizing a raw tire, a suction line 14 for sucking a gas in a vulcanization container, It has.
- the vulcanization molding machine 12 has a gantry 18 constituting the vulcanizing vessel 16 and a heat insulating hood 20, and the vulcanization molding machine 12 is vulcanized by contact between the mold and the vulcanized object (raw tire).
- the sulfur container 16 is in a closed state.
- a bladder 22 is erected in the center of the gantry 18.
- the hood portion 20 is provided on the upper side of the gantry portion 18 so as to be movable up and down.
- a platen plate 26 and an expansion / contraction guide portion 34 described later are moved up and down to switch the open / close state of the vulcanization vessel 16.
- the hood portion 20 is held by an elevator (not shown) and can move up and down.
- the vulcanization molding machine 12 is provided with a cylinder portion 24 (see also FIG. 5) that can move up and down through the hood portion 20 in the vertical direction.
- the cylinder portion 24 penetrates the ceiling portion 20U of the hood portion 20 so as to be positioned on the central axis of the hood portion 20.
- a disk-shaped platen plate 26 is attached to the lower end portion of the cylinder portion 24, and the cylinder portion 24 is open on the lower surface side of the platen plate 26.
- the vulcanization molding machine 12 has a so-called push-pull mold 30 in which the raw tire (green tire (GT)) is accommodated inside the hood portion 20.
- the mold 30 includes an upper mold 30U and a lower mold 30L for vulcanizing the bead portion from the sidewall portion of the tire, and a tread portion of the tire in contact with the upper mold 30U and the lower mold 30L at the time of vulcanization, And a horizontal mold 30S that vulcanizes from the shoulder portion to the sidewall portion.
- the lower mold 30L is fixed to the gantry 18.
- the upper mold 30U is held on the lower surface side of the platen plate 26.
- the horizontal mold 30S is attached to the segment holder 32 on the outer side in the tire radial direction of the horizontal mold 30S.
- the segment holder 32 and the horizontal mold 30S are composed of a plurality of divided members.
- an expansion / contraction guide portion 34 having a tapered surface 34T that extends downward is provided on the outer side in the tire radial direction of the segment holder 32.
- an expansion / contraction guide portion 34 having a tapered surface 34T that extends downward is provided.
- the cylinder portion 24 is lowered with respect to the expansion / contraction guide portion 34
- the segment holder 32 is pressed by the platen plate 26 as shown in FIG. 2, and the diameter increases while being guided by the tapered surface 34T of the expansion / contraction guide portion 34.
- the horizontal mold 30S is lowered and opened.
- the segment holder 32 is guided by the tapered surface 34T and is raised while the diameter is narrowed, and the horizontal die 30S is closed.
- the platen plate 26, the upper mold 30U, the segment holder 32, the lower mold 30L, and the expansion / contraction guide part 34 are all located inside the hood part 20.
- the upper mold 30U and the horizontal mold 30S are covered with the hood portion 20 regardless of whether the horizontal mold 30S is open or closed.
- the hood portion 20 has a shape that covers the entire upper surface side of the vulcanization container 16 in this manner in order to suck the gas in the vulcanization container 16, but the hood portion 20 has a shape that covers the entire upper surface side of the vulcanization container 16.
- the shape which covers a part may be sufficient.
- the gantry unit 18 of the vulcanization molding machine 12 includes an air curtain forming unit 40 disposed on the upper peripheral edge 18 ⁇ / b> E of the gantry unit 18.
- the air curtain forming unit 40 is supplied with gas discharged from a heat recovery device 66, which will be described later, and the air curtain FC extends from the upper peripheral edge 18E of the gantry 12 to the lower edge 20L of the hood 20 (see FIG. 1A). It is the structure which forms.
- the air curtain forming part 40 is composed of an outer ejection part 42 and an inner ejection part 44.
- the outer ejection part 42 includes a circular pipe 46 and a short pipe-like outer extension part 48 that is arranged at equal intervals on the pipe 46 and extends upward.
- a jet outlet is formed at the tip of the outer extending portion 48, and an air curtain is formed by the gas jetted from the jet outlet.
- the inner ejection part 44 includes a circular pipe 50 disposed below the pipe 46 and a short pipe-shaped inner extension part 52 disposed on the pipe 50 at equal intervals.
- Each of the inner extending portions 52 is slightly inclined toward the same circumferential direction of the pipe 50 and is slightly inclined toward the inner side of the pipe.
- a jet outlet is formed at the tip of the inner extension portion 52, and a gas jetted from the jet outlet toward the center of the ceiling portion 20U of the hood portion 20 has a tornado-like (spiral) gas flow FT ( 1A) is generated.
- the suction line 14 is provided with the cylinder portion 24 that forms the suction port M in the hood portion 20 and a branch pipe 60 (see FIG. 5) branched from the cylinder portion 24.
- the suction line 14 passes through an ejector-type vacuum device (gas suction device) 62 (see also FIG. 6), a smoke separator 64 for removing oil smoke from the sucked gas, and a smoke separator 64.
- a heat recovery device 66 that recovers heat from the gas is sequentially provided from upstream to downstream.
- the smoke separator 64 is comprised with the dust collector (gas cleaner).
- the smoke separator 64 may be any known smoke separator, and may be configured to remove smoke by passing through water and sending gas downstream.
- the heat recovered from the heat recovery device 66 is used in a warmer 68 that keeps the raw tire warm in order to shorten the vulcanization time.
- the vulcanizing apparatus 10 includes one or a plurality of other vulcanization molding machines (for example, a vulcanization molding machine 16A), and corresponds to the vulcanization container 16 of each vulcanization molding machine 16A.
- a hood portion H is provided.
- a gas suction branch line G connected to the suction line 14 is connected to each hood portion H via a three-way valve 70 provided between the branch pipe 60 and the vacuum device 62.
- the vulcanizer 10 includes a temperature control of the vulcanizer 12, an operation control of the vacuum device 62 and a second vacuum device 76, which will be described later, an open / close control of each vulcanizer 12, and a three-way valve associated with the opening / closing thereof.
- a control unit 72 that performs switching control of 70 is provided. As shown in FIG. 1B, the control unit 72 is connected to the vulcanization molding machine 12, the vacuum device 62, the second vacuum device 76, and the three-way valve 70.
- FIG. 4 is an explanatory diagram showing in detail the suction system of the suction line 14 and the gas supply system to the air curtain forming unit.
- a second vacuum device 76 (see also FIG. 7) may be further disposed between the heat recovery device 66 and the gantry 18. In the following description, an example in which the second vacuum device 76 is provided will be described.
- the suction line 14 includes a first supply line 80 that supplies compressed gas to the vacuum device 62, and a second supply line 90 that supplies compressed gas to the second vacuum device 76. , Is connected.
- a pressure reducing valve 82, an air operated valve (mechanical valve) 84, and an on-off valve 86 are sequentially arranged from upstream to downstream.
- An electromagnetic valve 88 that controls opening and closing of the three-way valve 70 and the air operated valve 84 is provided.
- a pressure reducing valve 92, an air operated valve (mechanical valve) 94, and an on-off valve 96 are sequentially arranged from the upstream to the downstream.
- An electromagnetic valve 98 that controls opening and closing of the air operated valve 94 is provided.
- a bellows-shaped duct portion that opens to the inside of the hood portion, and a suction pipe that is connected to the downstream end of the duct portion are provided, and a vacuum device 62 and a smoke separation device 64 are provided in the suction pipe.
- the heat recovery device 66 may be provided. This further simplifies the device configuration.
- the raw tire TR is held in the vulcanization container 16 of the vulcanization molding machine 12 and the vulcanization container 16 is closed.
- a raw tire kept warm by the heat insulator 68 may be used.
- the temperature in the vulcanization vessel 16 is raised to a set temperature in accordance with a command from the control unit 72, and the raw tire TR is vulcanized by elapse of a predetermined time. After the elapse of a predetermined time, the temperature in the vulcanization vessel 16 is lowered according to a command from the control unit 72.
- hood part 20 are raised, and the vulcanization container 16 is opened. At this time, the opening of the hook is started by raising the expansion / contraction guide portion 34 that holds the horizontal mold 30S.
- gas suction is started by the vacuum device 62 and the second vacuum device 76, and the suction port Gas is sucked from M.
- gas is sucked from the central axis TC of the vulcanized tire TS formed by vulcanizing the raw tire TR, and sent to the smoke separator 64 to remove oily smoke and sent to the heat recovery device 66.
- the inside of the vulcanization vessel 16 may be gas-sucked before the vulcanization vessel 16 is opened.
- the gas after the oil smoke exhausted from the second vacuum device 76 is injected into the air curtain forming unit 40. Then, for example, a tornado-shaped gas flow FT (wind speed is 3 to 6 m / s, for example) from the upper peripheral edge 18E of the gantry 18 to the suction port M by the injected gas from the injected gas 44. Range) is formed. Therefore, the oil smoke in the vulcanization container 16 is smoothly sucked from the suction port M. Such a gas flow FT toward the suction port M inside the hook brings about an effect of suppressing the accumulation of oily smoke.
- a tornado-shaped gas flow FT wind speed is 3 to 6 m / s, for example
- an air curtain FC that partitions the upper edge portion 18E to the lower edge portion 20L of the hood portion 20 is formed by the gas ejected from the ejection port of the outer ejection portion 42. Therefore, the oil smoke in the vulcanizing container 16 is prevented from spreading into the building.
- the example in which both the gas flow FT and the air curtain FC are formed has been described. However, only one of the gas flow FT and the air curtain FC may be formed. Moreover, it is also possible to provide an air blower etc. separately and to form an air curtain, without using the gas collect
- the hood portion 20, the upper mold 30U, and the horizontal mold 30S are raised, and the vulcanized tire TS held in the upper mold 30U and the horizontal mold 30S is bladdered. Pull upward from 22. Accordingly, the vulcanized tire TS is detached from the bladder 22 by opening the vulcanization container 16. At least one of the bladder surface and the tire inner surface is usually coated with a release agent. When the vulcanized tire TS is detached from the bladder 22 after the vulcanization is completed, the amount of oil smoke containing the release agent component is large. Therefore, the oil smoke generated when the vulcanized tire TS is detached from the bladder 22 is efficiently exhausted from the suction port M.
- the raw tire TR is vulcanized in the vulcanizing container 16 and the vulcanized container 16 is opened, and the space in the hood portion 20 is further partitioned by the air curtain FC.
- the gas inside is sucked by the suction line 14. Therefore, it is not necessary to supply a high-pressure gas and not to discharge heat during vulcanization, compared to the case where the gas is supplied into the vulcanization vessel during vulcanization and the vulcanization vessel is exhausted. So energy saving effect is obtained.
- the oil smoke generated when the vulcanized tire TS is detached from the bladder 22 and the inner wall of the mold can be efficiently exhausted, and the oil smoke is suppressed from spreading around. Therefore, the working environment in the building can be made much better, and the temperature rise in the building can be suppressed.
- the manufacturing time can be shortened as compared with the case where the gas in the vulcanization vessel 16 is sucked only before the vulcanization vessel 16 is opened and the atmosphere is further introduced into the vulcanization vessel. Moreover, the oil smoke generated when the vulcanized tire TS is detached from the bladder 22 and the inner wall of the mold can be efficiently exhausted, and the oil smoke is suppressed from spreading around.
- the gas suction by the vacuum device 62 and the second vacuum device 76 is started, so that the operation for starting the gas suction does not have to be performed by the operator.
- the vulcanizer 10 includes a smoke separator 64 that removes oil smoke from the gas sucked in the suction line 14, an air curtain forming unit 40 that ejects the gas exhausted from the smoke separator 64 and forms an air curtain FC, It has.
- the air curtain FC is formed from the upper surface peripheral edge portion 18E of the gantry 18 to the lower edge portion 20L of the hood portion 20 even when the vulcanizing vessel 16 is opened. Even if the vulcanizing vessel 16 is opened, the vulcanizing vessel is formed. The interior is partitioned from the external space. Therefore, the air curtain FC further suppresses the spread of oily smoke when the vulcanizing vessel 16 is opened.
- this air curtain FC is formed using the exhaust of the smoke separator 64, and the energy saving effect is acquired. Note that even if an air curtain that is ejected outward from the outer periphery of the horizontal mold 30S is formed in place of the air curtain FC, the spread of oil smoke around the vulcanization vessel 16 is suppressed.
- the gas discharged from the smoke separator 64 is sent to the air curtain forming unit 40 via the heat recovery device 66. Therefore, the thermal efficiency is good, and an energy saving effect and a carbon dioxide gas reduction effect are further exhibited.
- an air curtain may be formed by jetting air toward the upper edge of the vulcanization container.
- the vulcanizing container 16 when the vulcanizing container 16 is opened, the vulcanized tire TS is pulled out of the bladder 22 by raising the horizontal mold 30S while the vulcanized tire TS is held by the horizontal mold 30S.
- the suction port M is formed above the hook, and after the mold 30 is opened, the vulcanized tire TS remaining on the lower mold 30L side by a known unloader or the like is used.
- the vulcanizing device 110 may be configured to be pulled out from the bladder 112.
- the gas suction in the suction line 14 is continued until the vulcanized tire TS is pulled out from the bladder 112, so that the oil smoke generated when the vulcanized tire TS is separated from the mold 30 is effectively removed. Can be sucked into and exhausted. That is, oil smoke generated when the vulcanized tire TS is detached from the bladder 22 or the inner wall of the mold can be efficiently generated regardless of where the vulcanized tire TS is located when the vulcanized container 16 is opened. It can exhaust and can suppress that this oil smoke spreads around.
- this embodiment demonstrated the example which vulcanizes
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Abstract
Description
ところで、加硫した後に加硫装置の加硫容器(釜)を開けると釜から油煙が周囲に広がる。このため、作業環境の関係上、加硫装置が設置されている建屋では換気回数を多くする必要がある。
また、特開平9-38966号公報では、加硫終了時、加硫装置の釜を開く前に釜内から白煙ガス(油煙を含むガス)を吸引し、更に、大気を導入することが開示されている。
本発明は、上記事実を考慮して、加硫容器を開いたときの周囲への油煙の広がりを抑えた加硫タイヤの製造方法、及び、加硫装置を提供することを課題とする。
気体は、空気に限らず窒素ガス等の他の気体であってもよい。また、気体を吸引するとは、気体中に浮遊している油煙も吸引することになる。
本明細書で、加硫対象物を加硫した加硫容器を開くとは、金型が、加硫中の加硫対象物に対する当接配置状態から該加硫対象物に対して離れていく状態のことをいう。また、少なくとも加硫容器を開いた後とは、加硫容器を開く前からであってもよいことを意味する。また、本明細書で、加硫容器が開いた状態で加硫容器内の気体を吸引するとは、加硫容器内に残留している気体や、加硫容器の開いた部位から流出した気体を吸引することを意味する。
加硫容器を開く形態は特に限定せず、上下方向に開く形態であってもよいし、左右方向に開く形態であってもよく、更には加硫容器の上部部材が加硫容器の下部部材にヒンジ結合されて開閉可能とされていてもよい。
従って、加硫中に、加硫容器内に気体を供給しつつ加硫容器内を排気する場合に比べ、高圧の気体を供給する必要がなく、また、加硫中の熱を排出する必要がないので省エネ効果が得られ、しかも、加硫タイヤをブラダや金型内壁から離脱させた際に発生する油煙を加硫容器内から効率良く排出することができ、この油煙が加硫容器の周囲に広がることが抑制される。なお、油煙とは、主に油分で構成されており、通常、白煙状に見える。
また、加硫容器を開く前にのみ加硫容器内の気体を吸引して更に加硫容器内に大気を導入する場合に比べ、製造時間を短縮することができ、しかも、加硫タイヤをブラダや金型内壁から離脱させた際に発生する油煙を効率良く排出することができ、この油煙が加硫容器の周囲に広がることが抑制される。
本発明の第2の態様では、加硫タイヤの踏面側から気体を吸引することに比べ、タイヤ周囲の気体を遥かに均等に吸引することができる。なお、吸引中心が中心軸上に位置していることが、気体を均等に吸引する上で最も好ましい。
これにより、加硫容器を開く動作でブラダからタイヤを離脱させることができる。また、ブラダ表面及びタイヤ内面の少なくとも一方には、通常、離型剤が塗られており、加硫終了後にブラダからタイヤが離脱するとこの離型剤を含む油煙の発生量が多い。従って、ブラダからタイヤを離脱させた際に発生する油煙を効率良く排出することができる。
ここで、第1の態様と同様に、少なくとも加硫容器を開いた後とは、加硫容器を開く前からであってもよいことを意味する。また、加硫容器を開く形態は特に限定せず、上下方向に開く形態であってもよいし、左右方向に開く形態であってもよく、更には加硫容器の上部部材が加硫容器の下部部材にヒンジ結合されて開閉可能とされた構成であってもよい。
従って、加硫中に加硫容器内に気体を供給しつつ金型内を排気する場合に比べ、高圧の気体を必要としないので加硫装置を簡単化することができ、加硫中の熱を排出する必要がないので省エネ効果が得られ、しかも、加硫ゴムをブラダや金型内壁から離脱させた際に発生する油煙を効率良く排出することができる。
また、加硫容器を開く前にのみ加硫容器内の気体を吸引して更に加硫容器内に大気を導入する場合に比べ、製造時間を短縮することができ、しかも、加硫ゴムをブラダや金型内壁から離脱させた際に発生する油煙を効率良く排出することができるという効果を奏する。
これにより、吸引機による気体の吸引の開始操作を作業員が行わなくてもよい。
これにより、少なくとも加硫容器を開いた後にフード部内或いはフード部下方から油煙が発生しても、この油煙を含む気体をほとんど吸引することが可能になり、油煙が周囲に広がることを更に抑制することができる。
第7の態様の発明では、加硫容器を開いてもエアーカーテンによって油煙が周囲に広がることがより更に抑制される。
加硫成形機12は、加硫容器16を構成する架台部18と断熱性のフード部20とを有しており、金型と加硫対象物(生タイヤ)とが接触しあうことにより加硫容器16が閉じた状態となる構造にされている。架台部18の中央にはブラダ22が立設している。フード部20は、架台部18の上側に位置して上下動可能に設けられており、後述のプラテン板26及び拡縮ガイド部34が上下動することで加硫容器16の開閉状態が切り替えられる。このフード部20は、図示しない昇降機に保持されて上下動が可能となっている。
プラテン板26、上金型30U、セグメントホルダー32、下金型30L、拡縮ガイド部34は何れもフード部20の内側に位置している。そして、横金型30Sが開いていても閉じていても、上金型30U及び横金型30Sがフード部20で覆われている。なお、フード部20は、このように加硫容器16の上面側全体を覆う形状であることが、加硫容器16内の気体を吸引する上で好ましいが、加硫容器16の上面側の一部を覆う形状であってもよい。
吸引ライン14には、フード部20内に吸引口Mを形成している上記シリンダ部24と、シリンダ部24から分岐した分岐管60(図5参照)と、が設けられている。そして、吸引ライン14には、エジェクタ式で気体を吸引するバキューム装置(気体吸引装置)62(図6も参照)と、吸引した気体から油煙を除去する分煙装置64と、分煙装置64を経由した気体から熱を回収する熱回収装置66と、が上流から下流へかけて順次設けられている。また、本実施形態では、分煙装置64は集塵機(気体清浄機)で構成されている。分煙装置64は公知の分煙装置なら何でもよく、水中をくぐらせて気体を下流へ送ることによって除煙する構成であってもよい。そして、本実施形態では、熱回収装置66から回収された熱は、加硫時間を短縮するために生タイヤを保温する保温器68で利用される。
そして加硫装置10には、加硫成形機12の温度制御、バキューム装置62及び後述の第2バキューム装置76の作動制御、各加硫成形機12の開閉制御、及び、その開閉に伴う三方弁70の切替制御、を行う制御部72が設けられている。制御部72は、図1Bに示すように、加硫成形機12、バキューム装置62、第2バキューム装置76、及び、三方弁70と接続されている。
以下、加硫装置10を用いて加硫タイヤを製造すること、及び、本実施形態の作用、効果を説明する。
次に、制御部72からの指令で加硫容器16内の温度を設定温度にまで上げ、所定時間経過することにより生タイヤTRを加硫成形する。
所定時間経過後、制御部72の指令により加硫容器16内の温度を下げる。そして、制御部72の指令により、上金型30U、横金型30S及びフード部20を上昇させて加硫容器16を開く。その際、横金型30Sを保持する拡縮ガイド部34を上昇させることにより釜開が始まる。また、フード部20が上昇して大気が加硫容器16内に流入可能となったときに制御部72からの指令で、バキューム装置62及び第2バキューム装置76で気体吸引を開始して吸引口Mから気体吸引する。この結果、生タイヤTRが加硫されてなる加硫タイヤTSの中心軸TCから気体吸引され、分煙装置64へ送られて油煙が除去されて熱回収装置66へ送給される。なお、加硫容器16を開ける前から加硫容器16内を気体吸引してもよい。
また、加硫容器16を開く際、ブラダ22から加硫タイヤTSを上方へ引き抜く。これにより、加硫容器16を開く動作でブラダ22から加硫タイヤTSを離脱させることができ、しかも、ブラダからタイヤを離脱させた際に発生する油煙を効率良く排気することができる。
また、分煙装置64から排出された気体は、熱回収装置66を経てエアーカーテン形成部40へ送られる。従って、熱効率が良く、省エネ効果、及び、炭酸ガス削減効果が更に奏される。
また、本実施形態では、加硫容器16を開ける際に、加硫タイヤTSが横金型30Sに保持された状態で横金型30Sを上昇させることにより加硫タイヤTSがブラダ22から引き抜かれる例で説明したが、図8に示すように、釜上方に吸引口Mが形成されていて、金型30を開けた後に公知のアンローダなどで下金型30L側に残った加硫タイヤTSをブラダ112から引き抜く構成の加硫装置110であってもよい。この場合には、吸引ライン14での気体吸引を、加硫タイヤTSのブラダ112からの引き抜き後まで継続することにより、金型30から加硫タイヤTSが離れた際に発生する油煙を効果的に吸引して排気することができる。
すなわち、加硫容器16を開いたときに加硫タイヤTSが加硫容器16のどこに位置していても、加硫タイヤTSがブラダ22や金型内壁から離脱した際に発生する油煙を効率良く排気することができ、この油煙が周囲に広がることを抑制できる。
また、本実施形態では生タイヤを加硫する例で説明したが、生タイヤ以外の未加硫ゴムを加硫する場合であっても、同様の作用、効果を奏する。
Claims (7)
- タイヤ加硫用の加硫容器内で生タイヤを加硫し、
少なくとも前記加硫容器を開いた後に前記加硫容器内の気体を吸引する加硫タイヤの製造方法。 - 前記加硫容器内の気体を吸引する際、加硫タイヤの中心軸側から吸引する、請求項1に記載の加硫タイヤの製造方法。
- 前記加硫容器を開く際、前記加硫容器内のブラダから加硫タイヤを上方へ引き抜く、請求項1又は2に記載の加硫タイヤの製造方法。
- 未加硫ゴムを加硫する加硫容器と、
少なくとも前記加硫容器が開いた後に前記加硫容器内の気体を吸引する吸引機と、
を備えた、加硫装置。 - 前記加硫容器が開いた後に気体の吸引を開始させるように、前記吸引機を制御する制御部を備えた、請求項4に記載の加硫装置。
- 前記加硫容器が、少なくとも加硫容器上部に設けられ前記加硫容器の少なくとも一部を外側から覆うフード部を備え、前記吸引機が前記フード部内の気体を吸引する、請求項4又は5に記載の加硫装置。
- 前記加硫容器を構成する架台部を備え、
前記架台部には、前記加硫容器が開いたときにエアーカーテンで前記加硫容器内を外部空間から仕切るエアーカーテン形成部が設けられた、請求項4~6のいずれか1項に記載の加硫装置。
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CN201080026931.9A CN102802901B (zh) | 2009-06-23 | 2010-06-23 | 硫化轮胎的制造方法及硫化装置 |
EP10792144.7A EP2447030B1 (en) | 2009-06-23 | 2010-06-23 | Method of manufacturing vulcanized tire, and vulcanizing device |
US13/379,817 US9387638B2 (en) | 2009-06-23 | 2010-06-23 | Vulcanized tire manufacturing method and vulcanization apparatus |
JP2011519923A JP5694932B2 (ja) | 2009-06-23 | 2010-06-23 | 加硫タイヤの製造方法、及び、加硫装置 |
US14/593,388 US9517604B2 (en) | 2009-06-23 | 2015-01-09 | Vulcanized tire vulcanization apparatus |
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US14/593,388 Division US9517604B2 (en) | 2009-06-23 | 2015-01-09 | Vulcanized tire vulcanization apparatus |
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Cited By (3)
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CN105328844A (zh) * | 2015-12-16 | 2016-02-17 | 桂林橡胶机械有限公司 | 集成吹风功能的轮胎硫化机下护罩 |
US9517604B2 (en) * | 2009-06-23 | 2016-12-13 | Bridgestone Corporation | Vulcanized tire vulcanization apparatus |
JP2017202581A (ja) * | 2016-05-09 | 2017-11-16 | 住友ゴム工業株式会社 | タイヤ加硫用ブラダーのパンク検出装置、パンク検出方法およびタイヤ加硫装置 |
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EP2908079B1 (de) * | 2014-02-13 | 2021-08-04 | Continental Reifen Deutschland GmbH | Verfahren zur Rückgewinnung von Wärmeenergie bei der Vulkanisation eines Fahrzeugreifens |
DE102015001732A1 (de) * | 2014-04-30 | 2015-11-05 | Harburg-Freudenberger Maschinenbau Gmbh | Heizeinrichtung für Reifenvulkanisiermaschinen |
CN105479632B (zh) * | 2015-12-30 | 2019-02-12 | 重庆精榜高分子材料有限公司 | 平板硫化机及其硫化方法 |
DE102016223647A1 (de) * | 2016-11-29 | 2018-05-30 | Continental Reifen Deutschland Gmbh | Verfahren zur Herstellung eines Fahrzeugreifens und Fertigungseinheit zur Anwendung des Verfahrens |
WO2018175174A1 (en) | 2017-03-22 | 2018-09-27 | Bridgestone Bandag, Llc | Method and system for leak testing enclosures |
CN111361187B (zh) * | 2020-04-03 | 2024-09-27 | 同济大学 | 一种分阶段硫化机废气收集装置及其使用方法 |
CN114750439B (zh) * | 2022-03-24 | 2023-12-29 | 安徽华泰尔环保科技有限公司 | 一种用于橡胶轮胎加工的硫化设备及其使用方法 |
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US20160200058A1 (en) | 2016-07-14 |
JPWO2010150826A1 (ja) | 2012-12-10 |
US9387638B2 (en) | 2016-07-12 |
US20120161365A1 (en) | 2012-06-28 |
EP2447030A1 (en) | 2012-05-02 |
CN102802901A (zh) | 2012-11-28 |
EP2447030A4 (en) | 2013-05-01 |
JP5694932B2 (ja) | 2015-04-01 |
EP2447030B1 (en) | 2015-04-22 |
CN102802901B (zh) | 2014-12-10 |
US20160361881A9 (en) | 2016-12-15 |
US9517604B2 (en) | 2016-12-13 |
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