CN101474872B - 制造穿孔密封剂预组装部件的方法和设备 - Google Patents

制造穿孔密封剂预组装部件的方法和设备 Download PDF

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CN101474872B
CN101474872B CN2008101853701A CN200810185370A CN101474872B CN 101474872 B CN101474872 B CN 101474872B CN 2008101853701 A CN2008101853701 A CN 2008101853701A CN 200810185370 A CN200810185370 A CN 200810185370A CN 101474872 B CN101474872 B CN 101474872B
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sealant
center
weight
conveyer belt
axial
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CN101474872A (zh
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R·A·小拉姆雷恩
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Goodyear Tire and Rubber Co
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    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00Producing pneumatic or solid tyres or parts thereof
    • B29D30/06Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0681Parts of pneumatic tyres; accessories, auxiliary operations
    • B29D30/0685Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/62Stitching
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/01General aspects dealing with the joint area or with the area to be joined
    • B29C66/05Particular design of joint configurations
    • B29C66/10Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/116Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
    • B29C66/1162Single bevel to bevel joints, e.g. mitre joints
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/40General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43Joining a relatively small portion of the surface of said articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/737General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined
    • B29C66/7375General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73751General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized
    • B29C66/73752General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being uncured, i.e. non cross-linked, non vulcanized the to-be-joined areas of both parts to be joined being uncured
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/80General aspects of machine operations or constructions and parts thereof
    • B29C66/83General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411Roller, cylinder or drum types
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0021Combinations of extrusion moulding with other shaping operations combined with joining, lining or laminating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07Flat, e.g. panels
    • B29C48/08Flat, e.g. panels flexible, e.g. films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/355Conveyors for extruded articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/50General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D30/00Producing pneumatic or solid tyres or parts thereof
    • B29D30/06Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
    • B29D30/0681Parts of pneumatic tyres; accessories, auxiliary operations
    • B29D30/0685Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
    • B29D2030/0686Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre
    • B29D2030/0689Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre by incorporating the sealant into a plurality of chambers, e.g. bags, cells, tubes or closed cavities
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/18Polymers of hydrocarbons having four or more carbon atoms, e.g. polymers of butylene, e.g. PB, i.e. polybutylene
    • B29K2023/22Copolymers of isobutene, e.g. butyl rubber
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • B29K2105/246Uncured, e.g. green
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2030/00Pneumatic or solid tyres or parts thereof
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T152/00Resilient tires and wheels
    • Y10T152/10Tires, resilient
    • Y10T152/10495Pneumatic tire or inner tube
    • Y10T152/10666Automatic sealing of punctures [e.g., self-healing, etc.]
    • Y10T152/10675Using flowable coating or composition
    • Y10T152/10684On inner surface of tubeless tire
    • Y10T152/10693Sealant in plural layers or plural pockets
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T152/00Resilient tires and wheels
    • Y10T152/10Tires, resilient
    • Y10T152/10495Pneumatic tire or inner tube
    • Y10T152/10666Automatic sealing of punctures [e.g., self-healing, etc.]
    • Y10T152/10675Using flowable coating or composition
    • Y10T152/10702Using flowable coating or composition within or part of construction of inflating inner tube
    • Y10T152/10711Sealant in plural layers or plural pockets

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
  • Tyre Moulding (AREA)

Abstract

本发明提出一种制造穿孔密封剂预组装部件的方法和设备。该方法和设备用于在轮胎制造中的内置的密封剂预组装件。该制造预组装密封剂的方法包括在第一传送带上挤出密封剂的中心带和至少两个轴向外带;其中中心带和轴向外带是并排相邻关系。将中心带传送到第二传送带上,而轴向外带在第一传送带上被朝向传送带的端部传送,其中该中心带有两个外边缘,其中分隔带以连续的方式被施加到每个边缘上,之后中心带被传送到轴向外带上且将它们缝合在一起从而形成预组装的部件。

Description

制造穿孔密封剂预组装部件的方法和设备
本申请请求保护2007年12月21日提交申请的美国临时申请61/016,295的权益,该申请被结合于本文作为参考。
技术领域
本发明涉及一种用于制造在轮胎中使用的穿孔密封剂组件的方法和设备。
背景技术
将穿孔密封橡胶和塑料制成的穿孔密封剂应用到轮胎的胎冠部分使得当锋利的物件例如钉子刺进轮胎时,轮胎密封剂在穿孔周围形成密封,这是公知的现有技术。这种性质的轮胎密封剂取向于可流动的或软的,使得在轮胎高速旋转时由于离心力形成向轮胎的中心部分迁移的趋势。因此,由于密封剂向中心迁移,胎冠的外侧部分已经减少了密封剂量。例如在美国专利2,877,819和美国专利4,388,261所示的,将密封剂分隔放入多个室内是现有技术中公知的。将密封剂分隔放入多个室内的缺陷是制造过程成本高。此外,具有太多的室会妨碍密封穿孔所需的密封剂的有效流动。并且,使用挤出器将密封剂制造入到各室中是高成的并需要附加的制造步骤。因此,希望提供一种轮胎和低成本制造方法,以便提供在轮胎使用过程中不会迁移的穿孔密封剂。
定义
“高宽比”是指轮胎的截面高度与其截面宽度之比。
“轴向”和“轴向上”是指平行于轮胎的旋转轴线的线或方向。
“胎体”是指轮胎帘布层材料和其它轮胎部件的层压件(或层状件),它们被切成适当长度以便拼接或已经拼接成圆筒形或环形形状。在对胎体进行硫化以便形成模制轮胎之前可以将其它部件加到胎体上。
“周向(的)”是指沿着与轴向垂直的环形胎面的表面的周长延伸的线或方向;其还可以指多组相邻圆形曲线的方向,沿截面观察时所述曲线的半径限定了胎面的轴向曲率。
“帘线”是指用来增强帘布层的增强线股之一,其包括纤维。
“内衬层”是指形成无内胎型轮胎的内表面并且容纳在轮胎内的膨胀流体的由弹性体或其它材料构成的一层或多层。
“帘布层”是指由涂有弹性体、沿径向展开或平行的帘线构成的帘线增强层。
“径向”和“径向上”是指沿径向朝向或背离轮胎的旋转轴线的方向。
“子午线帘布层结构”是指一个或多个胎体帘布层,其中至少一个帘布层具有相对于轮胎的赤道面以介于65°与90°之间的角度取向的增强帘线。
“子午线轮胎”是指一种带束的充气轮胎或周向约束式充气轮胎,其中从胎圈延伸至胎圈的帘布层的帘线相对于轮胎的赤道面以介于65°与90°之间的帘线角来设置。
“侧壁”是指位于胎面与胎圈之间的轮胎的部分。
“斜切”或“斜切角度”是指刀具相对于正在被切割的材料所成的切割角度;斜切角度相对于正在被切割的扁平材料的平面进行测量。
“层压结构(或层状结构)”是指由轮胎的一个或多个层或弹性体部件如内衬层、侧壁及任选的帘布层制成的未硫化的结构。
发明内容
本发明提供了一种制造预组装密封剂的方法,包括以下步骤:在第一传送带上挤出密封剂的中心区和至少两个轴向外区,其中所述轴向外区位于所述中心区的两侧,且所述中心区和所述轴向外区是并排相邻关系;将所述中心区传送到第二传送带上,而将所述轴向外区保持在所述第一传送带上朝向第一传送带的端部传送,所述第二传送带将所述中心区传送到分隔带施加站,其中所述中心区具有两个侧壁,在所述分隔带施加站将分隔带以连续的方式施加到每个侧壁上,将所述中心区传送回所述第一传送带上,并且使所述中心区的带有已施加所述分隔带的侧壁接合所述轴向外区的内壁,将所述中心区和所述轴向外区缝合在一起从而形成预组装的部件。
在一个优选实施例中,所述密封剂的轴向外区具有与水平面成角度的外壁和内壁,其中所述密封剂的中心区具有匹配的两个侧壁以与所述密封剂的轴向外区的内壁邻接。
在一个优选实施例中,所述密封剂的宽度介于约6英寸至约10英寸的范围内。
在一个优选实施例中,所述密封剂为有色密封剂。
在一个优选实施例中,除了碳黑之外,按照每100份重量的所述部分解聚丁基橡胶的重量份数来算,所述密封剂包括:(A)作为异丁烯与异戊二烯的共聚物的部分有机过氧化物-解聚的丁基橡胶,其中在进行此类解聚反应之前,所述丁基橡胶包括源于异戊二烯的约0.5至约5个百分数单位,以及相应地源于异丁烯的约95至约99.5个重量百分数单位;(B)微粒增强填充物包括:(1)约20至约50重量份的合成无定形二氧化硅,或者(2)约15至约30重量份的合成无定形二氧化硅,以及约5至约20重量份的粘土,或者(3)约15至约30重量份的合成无定形二氧化硅和约5至约20重量份的碳酸钙,或者(4)约15至约30重量份的合成无定形二氧化硅、约5至约15重量份的粘土以及约5至约15重量份的碳酸钙;(C)0至6重量份的短的有机纤维;(D)除黑色之外的着色剂,其中所述着色剂选自有机颜料、无机颜料与染料中的至少一种;以及(E)0至约20重量份的橡胶加工用油。
在一个优选实施例中,其特征在于,合成无定形二氧化硅为沉淀白炭黑。
附图说明
通过考虑结合附图进行的以下描述,将会更加清楚本发明的结构、操作及优点,其中:
图1是带有密封剂的轮胎的横截面的示意图;
图2是密封剂层与隔离层的预组装件的横截面图;
图3是用于预组装密封剂与隔离层的组装装置的第一实施例的示意图;
图4是密封剂层与隔离层的预组装件的第二实施例的横截面图;以及
图5是用于预组装密封剂与隔离层的组装装置的第一实施例的示意图。
具体实施方式
现在参看图1,图示出了根据本发明构造的自封式充气轮胎的剖视图。该轮胎可以是任何一种轮胎,例如载重汽车轮胎、轻型载重汽车轮胎或乘用车轮胎。该轮胎2包括侧壁3、支承轮胎的胎体4、一对胎圈5、内衬层6、密封剂层7、可选的覆盖层9以及外部周向胎面8。侧壁3从胎面部分8的轴向外边缘沿径向向内延伸以便连接相应的胎圈。胎体4用作胎面与侧壁的支承结构,并且包括一个或多个帘布层。所示的密封剂层7设置于内衬层6与弹性体覆盖层9之间,该弹性体覆盖层9是例如橡胶层、帘布层或可选的隔离层。该可选的覆盖层9可具有尺寸确定为覆盖密封剂层的例如从胎肩到胎肩的宽度,或者可以进一步向下延伸进入帘布层和内衬层之间的胎圈区域。密封剂层7还可被设置于不同的位置处,如下面更详细所述的。胎面区域8形成了胎体的胎冠区域。在胎面的内部区域中,一般存在着一个或多个带(或带束层)18。胎面的表面区域形成了胎面花纹。
密封剂组分
密封剂7可包括本领域技术人员所公知的任何合适的密封剂成分或组分,例如橡胶或弹性体组分和塑料组分。便于使用的合适的聚合物组分在美国专利4,895,610中进行了描述,该专利的全部内容被引入作为参考。该美国专利中描述的聚合物组分按重量比算包括以下组分:100份丁基橡胶共聚物、约10至约40份碳黑、约5至约35份油填充剂、以及约1至约8份过氧化物硫化剂。第二聚合物组分按重量比算包括以下组分:100份丁基橡胶共聚物、约20至约30份碳黑、约8至约12份油填充剂、以及约2至约4份过氧化物硫化剂。
密封剂层7还可以包括如美国专利7,073,550中描述的有色聚合物组分,该专利的全部内容在此引入作为参考。除了碳黑之外,按照每100份重量的所述部分解聚的丁基橡胶的重量份数来算,有色聚合物组分包括:
(A)作为异丁烯与异戊二烯的共聚物的部分有机过氧化物解聚的丁基橡胶,其中在进行此类解聚反应之前,所述丁基橡胶包括源于异戊二烯的约0.5至约5个,优选地介于0.5至1范围内的百分数单位,以及相应地源于异丁烯的约95至约99.5个,优选地介于99至99.5范围内的重量百分数单位;
(B)微粒增强填充物包括:
(1)约20至约50重量份的合成无定形二氧化硅,优选地为沉淀白炭黑,或者
(2)约15至约30重量份的合成无定形二氧化硅,优选地为沉淀白炭黑,以及约5至约20重量份的粘土,优选地为高岭粘土,或者
(3)约15至约30重量份的合成无定形二氧化硅,优选地为沉淀白炭黑,以及约5至约20重量份的碳酸钙,
(4)约15至约30重量份的合成无定形二氧化硅,优选地为沉淀白炭黑,约5至约15重量份的粘土,优选地为高岭粘土,以及约5至约15重量份的碳酸钙;
(C)0至6重量份,或者替代地约0.5至约5重量份的短的有机纤维
(D)除黑色之外的着色剂,其中所述着色剂选自有机颜料、无机颜料与染料中的至少一个,优选地选自有机颜料和无机颜料;
(E)0至约20重量份,或者替代地约2至约15重量份的橡胶加工用油,优选地橡胶加工用油的最大芳香族含量为约15个重量百分数,优选地环烷含量介于约35至约45个重量百分数的范围内以及优选地石蜡族含量介于约45至约55个重量百分数的范围内。
美国专利6,837,287中对可以用于本发明的另一种密封剂聚合物组分进行了描述,该专利的全部内容在此引入作为参考。
此外,任何具有由丁基橡胶和在100C0以上的高温下被活化的有机过氧化物硫化剂构成的聚合物组分的密封剂聚合物组分也可以用于本发明。
带有密封剂的轮胎构形或构造
附图1示出了轮胎密封剂构形的一个实例。所述密封剂包括两个或更多个区域,优选地两个或更多位于轮胎的胎肩部和中心部之间的轴向外区10,20和位于轮胎中心部的一个或更多个轴向内区15。
附图2示出了本发明的密封剂的预组装件17。图3示出了制作图2的预组装件的设备。密封剂预组装件17在安装到轮胎成型鼓上之前被组装起来。轴向外区10,20和中心区15通过齿轮泵或挤出机32直接挤出到传送带30上。每个区已经挤出成其所想要的形状,例如如图2所示。中心区15被挤出到传送带30的中间或中心,轴向外区10,20位于中心区15的两侧。传送带向前行进,其中只有密封剂的中心区15被第二传送带40拾取。轴向外区10,20继续留在第一传送带30上,向传送带30的端部行进。
该第二传送带40将密封剂的中心区15传送到一分隔带施加站。中心区15具有带角度的边缘11,13,所述边缘分别以角度θ1,θ2倾斜,所述角度θ1,θ2在大约10度到大约90度的范围内,更典型地在大约30度到大约60度的范围内。在该分隔带施加站42,将分隔带12,14施加到中心区的边缘11,13的每一个上。该分隔带可以是本领域技术人员公知的由弹性体、橡胶的胶质带、织物、浸胶帘带或任何其它合适材料制成的连续带(以下简称“分隔带”)。该分隔带具有足以沿整个带角度的边缘延伸的宽度。优选地,该分隔带是胶质橡胶(gum rubber)带。
优选地,分隔带12,14被同时施加,尽管不是必须这样。两个分隔带辊50,52位于第二传送带40的下面或任一侧。如果分隔带辊50,52位于第二传送带40的下面,每个分隔带在传送带40和第二上传送带44之间的缝隙供送入。每个分隔带利用辊子54或其它等同机构被施加到边缘11,13的每一个上。每个分隔带优选地被连续供送并被施加到边缘11,13。辊子54施加压力以确保分隔带充分地贴敷在中心部分15上。带有已施加好的分隔带的中心区15通过第二上传送带44被传送到第一传送带30上。当中心区被传送到第一传送带上时,带有已施加好的分隔带的侧壁11,13接合轴向外区22,24的侧壁。当密封剂组件被朝向传送带30的端部传送时,密封剂组件7在压力导向辊60下经过以便将中心和外部分缝合在一起,如图2所示。密封剂组件被缝合在一起后,密封剂组件被卷绕到卷轴上并被输送到轮胎成型机。
附图4示出了密封剂预组装件100的第二实施例。该密封剂预组装件除了以下不同之外与图2实施例相同。中心区的边缘11,13分别相对于水平面以角度θ1,θ2倾斜,所述角度θ1,θ2在大约100度到大约160度的范围内,更典型地在大约110度到大约150度的范围内。附图5示出了制造密封剂预组装件100的设备。如图5所示,轴向外区10,20和中心区15被齿轮泵或挤出器32直接挤出到传送带30上。每个区已经被挤出成其所想要的形状,例如如图4所示。中心区15被挤出到传送带30的中间或中心,轴向外区10,20位于中心区15的两侧。传送带向前行进,其中只有密封剂的中心区15被第二传送带40拾取。轴向外区10,20继续留在第一传送带30上,向传送带30的端部行进。
该第二传送带40将密封剂的中心区15传送到一分隔带施加站。在该分隔带施加站42,分隔带12,14被施加到中心区的边缘11,13的每一个上。两个分隔带辊50,52位于第二传送带40上方。每个分隔带利用辊子54或其它等同机构被施加到边缘11,13的每一个上。该辊子位于中心区附近。每个分隔带优先地被连续供送并被施加到边缘11,13。辊子54施加压力以确保分隔带充分地贴敷在中心部分15上。然后,带有已施加好的分隔带的中心区15被传送到第一传送带30上。当中心区被传送到第一传送带上时,带有已施加好的分隔带的侧壁11,13接合轴向外区22,24的侧壁。
当密封剂组件被朝向传送带30的端部传送时,密封剂组件7在压力导向辊60下经过,以便将中心和外部分缝合在一起,如图2所示。密封剂组件被缝合在一起后,密封剂组件被卷绕到卷轴上并被输送到轮胎成型机。
在未硫化的包含穿孔密封剂的轮胎中,区10,15,20的每一个中的密封剂厚度可以发生很大变化。一般来说,密封剂组分层的厚度可以介于约0.13cm(0.05英寸)至约1.9cm(0.75英寸)的范围内。在乘用车轮胎和载重汽车轮胎中,正常情况下希望密封剂组分层的厚度约为0.32cm(0.125英寸)。密封剂的宽度可随轮胎尺寸变化,但是典型地在大约3到6英寸的范围内。
在对本发明的未硫化充气橡胶轮胎进行成型之后,使用正常轮胎硫化周期对它们进行硫化处理。本发明的轮胎可以在大的温度范围内被硫化或固化,这在一定程度上取决于轮胎的尺寸和所需要的解聚丁基橡胶的程度及密封剂层自身的厚度,并且足以将所述密封剂前体层至少部分解聚成前述储能模量(G’)物理性能。
尽管已经示出了某些代表性实施例和细节以便对本发明进行示例说明,但是将会清楚,在不背离本发明精神或范围的情况下,在本领域内仍然可以对其做出各种的变化与改进。

Claims (6)

1.一种制造预组装密封剂的方法,包括以下步骤:
在第一传送带上挤出密封剂的中心区和至少两个轴向外区,其中所述轴向外区位于所述中心区的两侧,且所述中心区和所述轴向外区是并排相邻关系;
将所述中心区传送到第二传送带上,而将所述轴向外区保持在所述第一传送带上朝向第一传送带的端部传送,
所述第二传送带将所述中心区传送到分隔带施加站,其中所述中心区具有两个侧壁,在所述分隔带施加站将分隔带以连续的方式施加到每个侧壁上,
将所述中心区传送回所述第一传送带上,并且使所述中心区的带有已施加所述分隔带的侧壁接合所述轴向外区的内壁,
将所述中心区和所述轴向外区缝合在一起从而形成预组装的部件。
2.根据权利要求1所述的方法,其特征在于,密封剂的轴向外区具有与水平面成角度的外壁和内壁,其中所述密封剂的中心区具有匹配的两个侧壁以与所述密封剂的轴向外区的内壁邻接。
3.根据权利要求1所述的方法,其特征在于,所述密封剂的宽度介于约6英寸至约10英寸的范围内。
4.根据权利要求1所述的方法,其特征在于,所述密封剂为有色密封剂。
5.根据权利要求1所述的方法,其特征在于,除了碳黑之外,按照每100份重量的所述部分解聚丁基橡胶的重量份数来算,所述密封剂包括:
(A)作为异丁烯与异戊二烯的共聚物的部分有机过氧化物-解聚的丁基橡胶,其中在进行此类解聚反应之前,所述丁基橡胶包括源于异戊二烯的约0.5至约5个百分数单位,以及相应地源于异丁烯的约95至约99.5个重量百分数单位;
(B)微粒增强填充物包括:
(1)约20至约50重量份的合成无定形二氧化硅,或者
(2)约15至约30重量份的合成无定形二氧化硅,以及约5至约20重量份的粘土,或者
(3)约15至约30重量份的合成无定形二氧化硅和约5至约20重量份的碳酸钙,或者
(4)约15至约30重量份的合成无定形二氧化硅、约5至约15重量份的粘土以及约5至约15重量份的碳酸钙;
(C)0至6重量份的短的有机纤维;
(D)除黑色之外的着色剂,其中所述着色剂选自有机颜料、无机颜料与染料中的至少一种;以及
(E)0至约20重量份的橡胶加工用油。
6.根据权利要求5所述的方法,其特征在于,合成无定形二氧化硅为沉淀白炭黑。
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ES2356045T3 (es) 2011-04-04
DE602008003511D1 (de) 2010-12-30
JP2009149084A (ja) 2009-07-09
CN101474872A (zh) 2009-07-08
EP2072221A1 (en) 2009-06-24
US8221573B2 (en) 2012-07-17
US20090159182A1 (en) 2009-06-25
BRPI0805345A2 (pt) 2010-08-17

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